regexcmp.cpp revision c69afcec261fc345fda8daf46f0ea6b4351dc777
1b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// file: regexcmp.cpp 4b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 5c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// Copyright (C) 2002-2008 International Business Machines Corporation and others. 6b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// All Rights Reserved. 7b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 8b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// This file contains the ICU regular expression compiler, which is responsible 9b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// for processing a regular expression pattern into the compiled form that 10b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// is used by the match finding engine. 11b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 12b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 13b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/utypes.h" 14b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 15b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#if !UCONFIG_NO_REGULAR_EXPRESSIONS 16b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 17b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/unistr.h" 18b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/uniset.h" 19b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/uchar.h" 20b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/uchriter.h" 21b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/parsepos.h" 22b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/parseerr.h" 23b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "unicode/regex.h" 24b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "util.h" 25b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "cmemory.h" 26b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "cstring.h" 27b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "uvectr32.h" 28b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "uassert.h" 29b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "ucln_in.h" 30c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru#include "uinvchar.h" 31b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 32b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "regeximp.h" 33b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "regexcst.h" // Contains state table for the regex pattern parser. 34b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // generated by a Perl script. 35b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "regexcmp.h" 36b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "regexst.h" 37b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 38b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 39b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 40b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruU_NAMESPACE_BEGIN 41b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 42b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 43b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 44b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 45b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Constructor. 46b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 47b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 48c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste QueruRegexCompile::RegexCompile(RegexPattern *rxp, UErrorCode &status) : 49c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fParenStack(status), fSetStack(status), fSetOpStack(status) 50b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 51b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStatus = &status; 52b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 53b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat = rxp; 54b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fScanIndex = 0; 55b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fNextIndex = 0; 56b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fPeekChar = -1; 57b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fLineNum = 1; 58b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fCharNum = 0; 59b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fQuoteMode = FALSE; 60b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fInBackslashQuote = FALSE; 61b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fModeFlags = fRXPat->fFlags | 0x80000000; 62b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fEOLComments = TRUE; 63b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 64b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fMatchOpenParen = -1; 65b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fMatchCloseParen = -1; 66b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStringOpStart = -1; 67b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 68b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_SUCCESS(status) && U_FAILURE(rxp->fDeferredStatus)) { 69b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru status = rxp->fDeferredStatus; 70b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 71b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 72b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 73c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chAmp = 0x26; // '&' 74c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chDash = 0x2d; // '-' 75b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 76b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 77b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 78b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 79b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Destructor 80b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 81b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 82b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruRegexCompile::~RegexCompile() { 83b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 84b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 85c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic inline void addCategory(UnicodeSet *set, int32_t value, UErrorCode& ec) { 86c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->addAll(UnicodeSet().applyIntPropertyValue(UCHAR_GENERAL_CATEGORY_MASK, value, ec)); 87c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru} 88c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 89b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 90b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 91b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Compile regex pattern. The state machine for rexexp pattern parsing is here. 92b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// The state tables are hand-written in the file regexcst.txt, 93b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// and converted to the form used here by a perl 94b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// script regexcst.pl 95b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 96b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 97b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::compile( 98b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru const UnicodeString &pat, // Source pat to be compiled. 99b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UParseError &pp, // Error position info 100b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UErrorCode &e) // Error Code 101b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 102b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStatus = &e; 103b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParseErr = &pp; 104b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStackPtr = 0; 105b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStack[fStackPtr] = 0; 106b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 107b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 108b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 109b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 110b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 111b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // There should be no pattern stuff in the RegexPattern object. They can not be reused. 112b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(fRXPat->fPattern.length() == 0); 113b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 114b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Prepare the RegexPattern object to receive the compiled pattern. 115b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fPattern = pat; 116b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStaticSets = RegexStaticSets::gStaticSets->fPropSets; 117b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStaticSets8 = RegexStaticSets::gStaticSets->fPropSets8; 118b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 119b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 120b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Initialize the pattern scanning state machine 121b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fPatternLength = pat.length(); 122b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru uint16_t state = 1; 123b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru const RegexTableEl *tableEl; 124b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru nextChar(fC); // Fetch the first char from the pattern string. 125b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 126b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 127b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Main loop for the regex pattern parsing state machine. 128b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Runs once per state transition. 129b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Each time through optionally performs, depending on the state table, 130b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - an advance to the the next pattern char 131b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - an action to be performed. 132b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - pushing or popping a state to/from the local state return stack. 133b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // file regexcst.txt is the source for the state table. The logic behind 134b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // recongizing the pattern syntax is there, not here. 135b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 136b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 137b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Bail out if anything has gone wrong. 138b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Regex pattern parsing stops on the first error encountered. 139b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 140b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 141b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 142b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 143b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(state != 0); 144b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 145b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Find the state table element that matches the input char from the pattern, or the 146b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // class of the input character. Start with the first table row for this 147b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // state, then linearly scan forward until we find a row that matches the 148b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // character. The last row for each state always matches all characters, so 149b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the search will stop there, if not before. 150b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 151b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru tableEl = &gRuleParseStateTable[state]; 152c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru REGEX_SCAN_DEBUG_PRINTF(("char, line, col = (\'%c\', %d, %d) state=%s ", 153b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fC.fChar, fLineNum, fCharNum, RegexStateNames[state])); 154b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 155b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { // loop through table rows belonging to this state, looking for one 156b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // that matches the current input char. 157b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru REGEX_SCAN_DEBUG_PRINTF((".")); 158b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fCharClass < 127 && fC.fQuoted == FALSE && tableEl->fCharClass == fC.fChar) { 159b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Table row specified an individual character, not a set, and 160b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the input character is not quoted, and 161b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the input character matched it. 162b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 163b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 164b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fCharClass == 255) { 165b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Table row specified default, match anything character class. 166b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 167b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 168b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fCharClass == 254 && fC.fQuoted) { 169b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Table row specified "quoted" and the char was quoted. 170b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 171b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 172b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fCharClass == 253 && fC.fChar == (UChar32)-1) { 173b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Table row specified eof and we hit eof on the input. 174b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 175b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 176b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 177b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fCharClass >= 128 && tableEl->fCharClass < 240 && // Table specs a char class && 178b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fC.fQuoted == FALSE && // char is not escaped && 179b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fC.fChar != (UChar32)-1) { // char is not EOF 180c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (RegexStaticSets::gStaticSets->fRuleSets[tableEl->fCharClass-128].contains(fC.fChar)) { 181b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Table row specified a character class, or set of characters, 182b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and the current char matches it. 183b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 184b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 185b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 186b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 187b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // No match on this row, advance to the next row for this state, 188b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru tableEl++; 189b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 190b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru REGEX_SCAN_DEBUG_PRINTF(("\n")); 191b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 192b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 193b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We've found the row of the state table that matches the current input 194b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // character from the rules string. 195b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Perform any action specified by this row in the state table. 196b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (doParseActions(tableEl->fAction) == FALSE) { 197b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Break out of the state machine loop if the 198b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the action signalled some kind of error, or 199b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the action was to exit, occurs on normal end-of-rules-input. 200b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 201b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 202b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 203b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fPushState != 0) { 204b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStackPtr++; 205b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fStackPtr >= kStackSize) { 206b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_INTERNAL_ERROR); 207b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru REGEX_SCAN_DEBUG_PRINTF(("RegexCompile::parse() - state stack overflow.\n")); 208b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStackPtr--; 209b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 210b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStack[fStackPtr] = tableEl->fPushState; 211b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 212b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 213b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 214b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // NextChar. This is where characters are actually fetched from the pattern. 215b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Happens under control of the 'n' tag in the state table. 216b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 217b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fNextChar) { 218b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru nextChar(fC); 219b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 220b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 221b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Get the next state from the table entry, or from the 222b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // state stack if the next state was specified as "pop". 223b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (tableEl->fNextState != 255) { 224b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru state = tableEl->fNextState; 225b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 226b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru state = fStack[fStackPtr]; 227b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStackPtr--; 228b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fStackPtr < 0) { 229b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // state stack underflow 230b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // This will occur if the user pattern has mis-matched parentheses, 231b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // with extra close parens. 232c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 233b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStackPtr++; 234b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_MISMATCHED_PAREN); 235b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 236b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 237b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 238b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 239b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 240c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 241c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Bail out if the pattern had errors. 242c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Set stack cleanup: a successful compile would have left it empty, 243c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // but errors can leave temporary sets hanging around. 244c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru while (!fSetStack.empty()) { 245c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete (UnicodeSet *)fSetStack.pop(); 246c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 247c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return; 248c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 249c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 250b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 251b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The pattern has now been read and processed, and the compiled code generated. 252b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 253b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 254b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Back-reference fixup 255b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 256b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loc; 257b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc=0; loc<fRXPat->fCompiledPat->size(); loc++) { 258b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = fRXPat->fCompiledPat->elementAti(loc); 259b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType = URX_TYPE(op); 260b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (opType == URX_BACKREF || opType == URX_BACKREF_I) { 261b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t where = URX_VAL(op); 262b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (where > fRXPat->fGroupMap->size()) { 263b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_INVALID_BACK_REF); 264b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 265b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 266b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru where = fRXPat->fGroupMap->elementAti(where-1); 267b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(opType, where); 268b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, loc); 269b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 270b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 271b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 272b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 273b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 274b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compute the number of digits requried for the largest capture group number. 275b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 276b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fMaxCaptureDigits = 1; 277b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t n = 10; 278b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 279b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (n > fRXPat->fGroupMap->size()) { 280b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 281b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 282b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fMaxCaptureDigits++; 283b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru n *= 10; 284b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 285b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 286b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 287b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The pattern's fFrameSize so far has accumulated the requirements for 288b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // storage for capture parentheses, counters, etc. that are encountered 289b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // in the pattern. Add space for the two variables that are always 290b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // present in the saved state: the input string position and the 291b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // position in the compiled pattern. 292b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 293b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize+=2; 294b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 295b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 296b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Get bounds for the minimum and maximum length of a string that this 297b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // pattern can match. Used to avoid looking for matches in strings that 298b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // are too short. 299b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 300b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fMinMatchLen = minMatchLength(3, fRXPat->fCompiledPat->size()-1); 301b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 302b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 303b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Optimization passes 304c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 305c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru matchStartType(); 306b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru stripNOPs(); 307b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 308b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 309b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Set up fast latin-1 range sets 310b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 311b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t numSets = fRXPat->fSets->size(); 312b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fSets8 = new Regex8BitSet[numSets]; 313c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Null pointer check. 314c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fRXPat->fSets8 == NULL) { 315c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru e = *fStatus = U_MEMORY_ALLOCATION_ERROR; 316c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return; 317c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 318b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t i; 319b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (i=0; i<numSets; i++) { 320b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UnicodeSet *s = (UnicodeSet *)fRXPat->fSets->elementAt(i); 321b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fSets8[i].init(s); 322b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 323b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 324b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 325b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 326b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 327b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 328b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 329b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 330b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 331b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 332b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// doParseAction Do some action during regex pattern parsing. 333b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Called by the parse state machine. 334b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 335b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Generation of the match engine PCode happens here, or 336b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// in functions called from the parse actions defined here. 337b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 338b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 339b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 340b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruUBool RegexCompile::doParseActions(int32_t action) 341b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 342b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UBool returnVal = TRUE; 343b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 344b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch ((Regex_PatternParseAction)action) { 345b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 346b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPatStart: 347b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Start of pattern compiles to: 348b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru //0 SAVE 2 Fall back to position of FAIL 349b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru //1 jmp 3 350b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru //2 FAIL Stop if we ever reach here. 351b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru //3 NOP Dummy, so start of pattern looks the same as 352b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the start of an ( grouping. 353b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru //4 NOP Resreved, will be replaced by a save if there are 354b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // OR | operators at the top level 355b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_STATE_SAVE, 2), *fStatus); 356b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_JMP, 3), *fStatus); 357b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_FAIL, 0), *fStatus); 358b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 359b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Standard open nonCapture paren action emits the two NOPs and 360b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // sets up the paren stack frame. 361b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru doParseActions(doOpenNonCaptureParen); 362b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 363b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 364b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPatFinish: 365b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We've scanned to the end of the pattern 366b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The end of pattern compiles to: 367b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // URX_END 368b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // which will stop the runtime match engine. 369b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Encountering end of pattern also behaves like a close paren, 370b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and forces fixups of the State Save at the beginning of the compiled pattern 371b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and of any OR operations at the top level. 372b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 373b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru handleCloseParen(); 374b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fParenStack.size() > 0) { 375b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Missing close paren in pattern. 376b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_MISMATCHED_PAREN); 377b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 378b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 379b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // add the END operation to the compiled pattern. 380b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_END, 0), *fStatus); 381b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 382b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Terminate the pattern compilation state machine. 383b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru returnVal = FALSE; 384b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 385b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 386b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 387b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 388b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOrOperator: 389b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Scanning a '|', as in (A|B) 390b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 391b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Insert a SAVE operation at the start of the pattern section preceding 392b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // this OR at this level. This SAVE will branch the match forward 393b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // to the right hand side of the OR in the event that the left hand 394b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // side fails to match and backtracks. Locate the position for the 395b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // save from the location on the top of the parentheses stack. 396b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t savePosition = fParenStack.popi(); 397b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = fRXPat->fCompiledPat->elementAti(savePosition); 398b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(op) == URX_NOP); // original contents of reserved location 399b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()+1); 400b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, savePosition); 401b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 402b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Append an JMP operation into the compiled pattern. The operand for 403b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the JMP will eventually be the location following the ')' for the 404b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // group. This will be patched in later, when the ')' is encountered. 405b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_JMP, 0); 406b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 407b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 408b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Push the position of the newly added JMP op onto the parentheses stack. 409b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // This registers if for fixup when this block's close paren is encountered. 410b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); 411b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 412b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Append a NOP to the compiled pattern. This is the slot reserved 413b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // for a SAVE in the event that there is yet another '|' following 414b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // this one. 415b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 416b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); 417b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 418b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 419b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 420b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 421b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpenCaptureParen: 422b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Open Paren. 423b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compile to a 424b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - NOP, which later may be replaced by a save-state if the 425b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // parenthesized group gets a * quantifier, followed by 426b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - START_CAPTURE n where n is stack frame offset to the capture group variables. 427b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - NOP, which may later be replaced by a save-state if there 428b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // is an '|' alternation within the parens. 429b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 430b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Each capture group gets three slots in the save stack frame: 431b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 0: Capture Group start position (in input string being matched.) 432b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1: Capture Group end positino. 433b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2: Start of Match-in-progress. 434b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The first two locations are for a completed capture group, and are 435b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // referred to by back references and the like. 436b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The third location stores the capture start position when an START_CAPTURE is 437b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // encountered. This will be promoted to a completed capture when (and if) the corresponding 438b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // END_CAPure is encountered. 439b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 440b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 441b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t varsLoc = fRXPat->fFrameSize; // Reserve three slots in match stack frame. 442b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize += 3; 443b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t cop = URX_BUILD(URX_START_CAPTURE, varsLoc); 444b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(cop, *fStatus); 445b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 446b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 447b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 448b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the two NOPs. Depending on what follows in the pattern, the 449b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // NOPs may be changed to SAVE_STATE or JMP ops, with a target 450b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // address of the end of the parenthesized group. 451b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); // Match mode state 452b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(capturing, *fStatus); // Frame type. 453b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-3, *fStatus); // The first NOP location 454b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The second NOP loc 455b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 456b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Save the mapping from group number to stack frame variable position. 457b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fGroupMap->addElement(varsLoc, *fStatus); 458b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 459b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 460b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 461b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpenNonCaptureParen: 462b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Open non-caputuring (grouping only) Paren. 463b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compile to a 464b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - NOP, which later may be replaced by a save-state if the 465b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // parenthesized group gets a * quantifier, followed by 466b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - NOP, which may later be replaced by a save-state if there 467b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // is an '|' alternation within the parens. 468b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 469b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 470b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 471b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 472b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 473b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the two NOPs. 474b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); // Match mode state 475b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(plain, *fStatus); // Begin a new frame. 476b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-2, *fStatus); // The first NOP location 477b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The second NOP loc 478b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 479b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 480b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 481b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 482b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpenAtomicParen: 483b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Open Atomic Paren. (?> 484b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compile to a 485c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // - NOP, which later may be replaced if the parenthesized group 486b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // has a quantifier, followed by 487b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - STO_SP save state stack position, so it can be restored at the ")" 488b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - NOP, which may later be replaced by a save-state if there 489b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // is an '|' alternation within the parens. 490b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 491b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 492b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t varLoc = fRXPat->fDataSize; // Reserve a data location for saving the 493b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fDataSize += 1; // state stack ptr. 494b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stoOp = URX_BUILD(URX_STO_SP, varLoc); 495b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(stoOp, *fStatus); 496b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 497b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 498b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 499b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the two NOPs. Depending on what follows in the pattern, the 500b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // NOPs may be changed to SAVE_STATE or JMP ops, with a target 501b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // address of the end of the parenthesized group. 502b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); // Match mode state 503b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(atomic, *fStatus); // Frame type. 504b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-3, *fStatus); // The first NOP 505b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The second NOP 506b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 507b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 508b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 509b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 510b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpenLookAhead: 511b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Positive Look-ahead (?= stuff ) 512c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 513c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Note: Addition of transparent input regions, with the need to 514c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // restore the original regions when failing out of a lookahead 515c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // block, complicated this sequence. Some conbined opcodes 516c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // might make sense - or might not, lookahead aren't that common. 517c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 518c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Caution: min match length optimization knows about this 519c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // sequence; don't change without making updates there too. 520c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 521b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 522c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 1 START_LA dataLoc Saves SP, Input Pos 523c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 2. STATE_SAVE 4 on failure of lookahead, goto 4 524c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3 JMP 6 continue ... 525c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 526c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 4. LA_END Look Ahead failed. Restore regions. 527c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 5. BACKTRACK and back track again. 528c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 529c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 6. NOP reserved for use by quantifiers on the block. 530b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Look-ahead can't have quantifiers, but paren stack 531b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // compile time conventions require the slot anyhow. 532c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 7. NOP may be replaced if there is are '|' ops in the block. 533c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 8. code for parenthesized stuff. 534c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 9. LA_END 535c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 536b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Two data slots are reserved, for saving the stack ptr and the input position. 537b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 538b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = fRXPat->fDataSize; 539c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fDataSize += 2; 540b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LA_START, dataLoc); 541b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 542b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 543c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()+ 2); 544c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 545c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 546c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_BUILD(URX_JMP, fRXPat->fCompiledPat->size()+ 3); 547c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 548c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 549c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_BUILD(URX_LA_END, dataLoc); 550c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 551c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 552c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_BUILD(URX_BACKTRACK, 0); 553c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 554c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 555b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_NOP, 0); 556b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 557b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 558b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 559b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 560c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // of the NOPs. 561b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); // Match mode state 562b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(lookAhead, *fStatus); // Frame type. 563b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-2, *fStatus); // The first NOP location 564b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The second NOP location 565b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 566b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 567b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 568b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpenLookAheadNeg: 569b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Negated Lookahead. (?! stuff ) 570b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 571b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. START_LA dataloc 572b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. SAVE_STATE 7 // Fail within look-ahead block restores to this state, 573b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // // which continues with the match. 574b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. NOP // Std. Open Paren sequence, for possible '|' 575b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. code for parenthesized stuff. 576b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5. END_LA // Cut back stack, remove saved state from step 2. 577c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 6. BACKTRACK // code in block succeeded, so neg. lookahead fails. 578c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 7. END_LA // Restore match region, in case look-ahead was using 579c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // an alternate (transparent) region. 580b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 581b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = fRXPat->fDataSize; 582c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fDataSize += 2; 583b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LA_START, dataLoc); 584b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 585b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 586b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STATE_SAVE, 0); // dest address will be patched later. 587b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 588b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 589b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_NOP, 0); 590b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 591b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 592b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 593c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // of the StateSave and NOP. 594b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); // Match mode state 595c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fParenStack.push(negLookAhead, *fStatus); // Frame type 596b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-2, *fStatus); // The STATE_SAVE location 597b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The second NOP location 598c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 599b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Instructions #5 and #6 will be added when the ')' is encountered. 600b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 601b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 602b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 603b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpenLookBehind: 604b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 605b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compile a (?<= look-behind open paren. 606b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 607b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 608b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 0 URX_LB_START dataLoc 609b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1 URX_LB_CONT dataLoc 610b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2 MinMatchLen 611b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3 MaxMatchLen 612b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4 URX_NOP Standard '(' boilerplate. 613b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5 URX_NOP Reserved slot for use with '|' ops within (block). 614b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 6 <code for LookBehind expression> 615b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 7 URX_LB_END dataLoc # Check match len, restore input len 616b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 8 URX_LA_END dataLoc # Restore stack, input pos 617b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 618b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Allocate a block of matcher data, to contain (when running a match) 619b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 0: Stack ptr on entry 620b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1: Input Index on entry 621b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2: Start index of match current match attempt. 622c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3: Original Input String len. 623b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 624b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Allocate data space 625b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = fRXPat->fDataSize; 626c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fDataSize += 4; 627c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 628b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit URX_LB_START 629b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LB_START, dataLoc); 630b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 631c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 632b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit URX_LB_CONT 633b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_LB_CONT, dataLoc); 634b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 635b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(0, *fStatus); // MinMatchLength. To be filled later. 636b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(0, *fStatus); // MaxMatchLength. To be filled later. 637c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 638b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the NOP 639b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_NOP, 0); 640b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 641b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 642c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 643b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 644c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // of the URX_LB_CONT and the NOP. 645b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); // Match mode state 646b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(lookBehind, *fStatus); // Frame type 647b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-2, *fStatus); // The first NOP location 648b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The 2nd NOP location 649c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 650b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The final two instructions will be added when the ')' is encountered. 651b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 652b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 653b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 654b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 655b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpenLookBehindNeg: 656b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 657b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compile a (?<! negated look-behind open paren. 658b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 659b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 660b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 0 URX_LB_START dataLoc # Save entry stack, input len 661b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1 URX_LBN_CONT dataLoc # Iterate possible match positions 662b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2 MinMatchLen 663b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3 MaxMatchLen 664b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4 continueLoc (9) 665b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5 URX_NOP Standard '(' boilerplate. 666b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 6 URX_NOP Reserved slot for use with '|' ops within (block). 667b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 7 <code for LookBehind expression> 668b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 8 URX_LBN_END dataLoc # Check match len, cause a FAIL 669b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 9 ... 670b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 671b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Allocate a block of matcher data, to contain (when running a match) 672b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 0: Stack ptr on entry 673b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1: Input Index on entry 674b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2: Start index of match current match attempt. 675c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3: Original Input String len. 676b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 677b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Allocate data space 678b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = fRXPat->fDataSize; 679c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fDataSize += 4; 680c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 681b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit URX_LB_START 682b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LB_START, dataLoc); 683b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 684c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 685b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit URX_LBN_CONT 686b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_LBN_CONT, dataLoc); 687b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 688b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(0, *fStatus); // MinMatchLength. To be filled later. 689b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(0, *fStatus); // MaxMatchLength. To be filled later. 690b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(0, *fStatus); // Continue Loc. To be filled later. 691c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 692b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the NOP 693b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_NOP, 0); 694b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 695b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 696c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 697b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 698c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // of the URX_LB_CONT and the NOP. 699b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); // Match mode state 700b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(lookBehindN, *fStatus); // Frame type 701b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-2, *fStatus); // The first NOP location 702b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The 2nd NOP location 703c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 704b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The final two instructions will be added when the ')' is encountered. 705b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 706b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 707b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 708b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doConditionalExpr: 709b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Conditionals such as (?(1)a:b) 710b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPerlInline: 711b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Perl inline-condtionals. (?{perl code}a|b) We're not perl, no way to do them. 712b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_UNIMPLEMENTED); 713b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 714b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 715b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 716b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doCloseParen: 717b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru handleCloseParen(); 718b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fParenStack.size() <= 0) { 719b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Extra close paren, or missing open paren. 720b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_MISMATCHED_PAREN); 721b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 722b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 723b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 724b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doNOP: 725b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 726b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 727b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 728b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBadOpenParenType: 729b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doRuleError: 730b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_RULE_SYNTAX); 731b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 732b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 733b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 734b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doMismatchedParenErr: 735b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_MISMATCHED_PAREN); 736b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 737b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 738b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPlus: 739b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Normal '+' compiles to 740b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. stuff to be repeated (already built) 741b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. jmp-sav 1 742b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. ... 743b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 744b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Or, if the item to be repeated can match a zero length string, 745b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. STO_INP_LOC data-loc 746b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. body of stuff to be repeated 747b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. JMP_SAV_X 2 748b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. ... 749b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 750b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 751b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Or, if the item to be repeated is simple 752b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. Item to be repeated. 753b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. LOOP_SR_I set number (assuming repeated item is a set ref) 754b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. LOOP_C stack location 755b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 756b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topLoc = blockTopLoc(FALSE); // location of item #1 757b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t frameLoc; 758b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 759b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Check for simple constructs, which may get special optimized code. 760b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (topLoc == fRXPat->fCompiledPat->size() - 1) { 761b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t repeatedOp = fRXPat->fCompiledPat->elementAti(topLoc); 762b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 763b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(repeatedOp) == URX_SETREF) { 764b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit optimized code for [char set]+ 765b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpI = URX_BUILD(URX_LOOP_SR_I, URX_VAL(repeatedOp)); 766b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(loopOpI, *fStatus); 767b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru frameLoc = fRXPat->fFrameSize; 768b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize++; 769b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpC = URX_BUILD(URX_LOOP_C, frameLoc); 770b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(loopOpC, *fStatus); 771b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 772b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 773b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 774b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(repeatedOp) == URX_DOTANY || 775c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru URX_TYPE(repeatedOp) == URX_DOTANY_ALL || 776c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru URX_TYPE(repeatedOp) == URX_DOTANY_UNIX) { 777b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit Optimized code for .+ operations. 778b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpI = URX_BUILD(URX_LOOP_DOT_I, 0); 779b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(repeatedOp) == URX_DOTANY_ALL) { 780c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // URX_LOOP_DOT_I operand is a flag indicating ". matches any" mode. 781b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loopOpI |= 1; 782b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 783c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fModeFlags & UREGEX_UNIX_LINES) { 784c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru loopOpI |= 2; 785c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 786b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(loopOpI, *fStatus); 787b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru frameLoc = fRXPat->fFrameSize; 788b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize++; 789b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpC = URX_BUILD(URX_LOOP_C, frameLoc); 790b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(loopOpC, *fStatus); 791b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 792b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 793b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 794b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 795b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 796b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // General case. 797b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 798b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Check for minimum match length of zero, which requires 799b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // extra loop-breaking code. 800b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (minMatchLength(topLoc, fRXPat->fCompiledPat->size()-1) == 0) { 801b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Zero length match is possible. 802b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the code sequence that can handle it. 803b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topLoc); 804b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru frameLoc = fRXPat->fFrameSize; 805b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize++; 806b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 807b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_STO_INP_LOC, frameLoc); 808b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topLoc); 809b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 810b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_JMP_SAV_X, topLoc+1); 811b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 812b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 813b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Simpler code when the repeated body must match something non-empty 814b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpOp = URX_BUILD(URX_JMP_SAV, topLoc); 815b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(jmpOp, *fStatus); 816b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 817b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 818b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 819b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 820b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doNGPlus: 821b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Non-greedy '+?' compiles to 822b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. stuff to be repeated (already built) 823b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. state-save 1 824b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. ... 825b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 826b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topLoc = blockTopLoc(FALSE); 827b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveStateOp = URX_BUILD(URX_STATE_SAVE, topLoc); 828b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(saveStateOp, *fStatus); 829b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 830b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 831b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 832b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 833b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doOpt: 834b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Normal (greedy) ? quantifier. 835b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 836b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. state save 3 837b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. body of optional block 838b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. ... 839b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Insert the state save into the compiled pattern, and we're done. 840b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 841b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveStateLoc = blockTopLoc(TRUE); 842b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveStateOp = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()); 843b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(saveStateOp, saveStateLoc); 844b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 845b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 846b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 847b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doNGOpt: 848b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Non-greedy ?? quantifier 849b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // compiles to 850b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. jmp 4 851b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. body of optional block 852b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3 jmp 5 853b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. state save 2 854b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5 ... 855b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // This code is less than ideal, with two jmps instead of one, because we can only 856b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // insert one instruction at the top of the block being iterated. 857b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 858b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmp1_loc = blockTopLoc(TRUE); 859b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmp2_loc = fRXPat->fCompiledPat->size(); 860b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 861b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmp1_op = URX_BUILD(URX_JMP, jmp2_loc+1); 862b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(jmp1_op, jmp1_loc); 863b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 864b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmp2_op = URX_BUILD(URX_JMP, jmp2_loc+2); 865b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(jmp2_op, *fStatus); 866b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 867b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t save_op = URX_BUILD(URX_STATE_SAVE, jmp1_loc+1); 868b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(save_op, *fStatus); 869b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 870b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 871b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 872b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 873b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doStar: 874b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Normal (greedy) * quantifier. 875b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 876b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. STATE_SAVE 4 877b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. body of stuff being iterated over 878b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. JMP_SAV 2 879b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. ... 880b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 881b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Or, if the body is a simple [Set], 882b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. LOOP_SR_I set number 883b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. LOOP_C stack location 884b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // ... 885b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 886c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Or if this is a .* 887b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. LOOP_DOT_I (. matches all mode flag) 888b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. LOOP_C stack location 889b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 890b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Or, if the body can match a zero-length string, to inhibit infinite loops, 891b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. STATE_SAVE 5 892b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. STO_INP_LOC data-loc 893b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. body of stuff 894b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. JMP_SAV_X 2 895b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5. ... 896b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 897b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // location of item #1, the STATE_SAVE 898b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topLoc = blockTopLoc(FALSE); 899b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = -1; 900b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 901b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Check for simple *, where the construct being repeated 902b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // compiled to single opcode, and might be optimizable. 903b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (topLoc == fRXPat->fCompiledPat->size() - 1) { 904b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t repeatedOp = fRXPat->fCompiledPat->elementAti(topLoc); 905b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 906b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(repeatedOp) == URX_SETREF) { 907c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Emit optimized code for a [char set]* 908b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpI = URX_BUILD(URX_LOOP_SR_I, URX_VAL(repeatedOp)); 909b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(loopOpI, topLoc); 910b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru dataLoc = fRXPat->fFrameSize; 911b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize++; 912b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpC = URX_BUILD(URX_LOOP_C, dataLoc); 913b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(loopOpC, *fStatus); 914b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 915b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 916b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 917b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(repeatedOp) == URX_DOTANY || 918c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru URX_TYPE(repeatedOp) == URX_DOTANY_ALL || 919c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru URX_TYPE(repeatedOp) == URX_DOTANY_UNIX) { 920b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit Optimized code for .* operations. 921b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpI = URX_BUILD(URX_LOOP_DOT_I, 0); 922b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(repeatedOp) == URX_DOTANY_ALL) { 923b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // URX_LOOP_DOT_I operand is a flag indicating . matches any mode. 924b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loopOpI |= 1; 925b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 926c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((fModeFlags & UREGEX_UNIX_LINES) != 0) { 927c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru loopOpI |= 2; 928c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 929b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(loopOpI, topLoc); 930b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru dataLoc = fRXPat->fFrameSize; 931b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize++; 932b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOpC = URX_BUILD(URX_LOOP_C, dataLoc); 933b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(loopOpC, *fStatus); 934b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 935b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 936b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 937b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 938b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit general case code for this * 939b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The optimizations did not apply. 940b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 941b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveStateLoc = blockTopLoc(TRUE); 942b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpOp = URX_BUILD(URX_JMP_SAV, saveStateLoc+1); 943b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 944b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Check for minimum match length of zero, which requires 945b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // extra loop-breaking code. 946b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (minMatchLength(saveStateLoc, fRXPat->fCompiledPat->size()-1) == 0) { 947b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(saveStateLoc); 948b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru dataLoc = fRXPat->fFrameSize; 949b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize++; 950b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 951b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_STO_INP_LOC, dataLoc); 952b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, saveStateLoc+1); 953b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru jmpOp = URX_BUILD(URX_JMP_SAV_X, saveStateLoc+2); 954b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 955c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 956b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Locate the position in the compiled pattern where the match will continue 957b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // after completing the *. (4 or 5 in the comment above) 958b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t continueLoc = fRXPat->fCompiledPat->size()+1; 959b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 960b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Put together the save state op store it into the compiled code. 961b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveStateOp = URX_BUILD(URX_STATE_SAVE, continueLoc); 962b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(saveStateOp, saveStateLoc); 963b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 964b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Append the URX_JMP_SAV or URX_JMPX operation to the compiled pattern. 965b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(jmpOp, *fStatus); 966b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 967b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 968b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 969b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doNGStar: 970b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Non-greedy *? quantifier 971b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // compiles to 972b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. JMP 3 973b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. body of stuff being iterated over 974b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. STATE_SAVE 2 975b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4 ... 976b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 977b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpLoc = blockTopLoc(TRUE); // loc 1. 978b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveLoc = fRXPat->fCompiledPat->size(); // loc 3. 979b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpOp = URX_BUILD(URX_JMP, saveLoc); 980b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stateSaveOp = URX_BUILD(URX_STATE_SAVE, jmpLoc+1); 981b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(jmpOp, jmpLoc); 982b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(stateSaveOp, *fStatus); 983b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 984b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 985b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 986b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 987b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doIntervalInit: 988b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The '{' opening an interval quantifier was just scanned. 989b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Init the counter varaiables that will accumulate the values as the digits 990b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // are scanned. 991b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fIntervalLow = 0; 992b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fIntervalUpper = -1; 993b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 994b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 995b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doIntevalLowerDigit: 996b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Scanned a digit from the lower value of an {lower,upper} interval 997b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 998b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t digitValue = u_charDigitValue(fC.fChar); 999b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(digitValue >= 0); 1000b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fIntervalLow = fIntervalLow*10 + digitValue; 1001b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fIntervalLow < 0) { 1002b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_NUMBER_TOO_BIG); 1003b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1004b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1005b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1006b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1007b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doIntervalUpperDigit: 1008b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Scanned a digit from the upper value of an {lower,upper} interval 1009b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1010b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fIntervalUpper < 0) { 1011b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fIntervalUpper = 0; 1012b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1013b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t digitValue = u_charDigitValue(fC.fChar); 1014b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(digitValue >= 0); 1015b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fIntervalUpper = fIntervalUpper*10 + digitValue; 1016b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fIntervalUpper < 0) { 1017b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_NUMBER_TOO_BIG); 1018b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1019b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1020b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1021b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1022b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doIntervalSame: 1023b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Scanned a single value interval like {27}. Upper = Lower. 1024b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fIntervalUpper = fIntervalLow; 1025b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1026b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1027b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doInterval: 1028b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Finished scanning a normal {lower,upper} interval. Generate the code for it. 1029b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (compileInlineInterval() == FALSE) { 1030b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru compileInterval(URX_CTR_INIT, URX_CTR_LOOP); 1031b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1032b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1033b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1034b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPossessiveInterval: 1035b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Finished scanning a Possessive {lower,upper}+ interval. Generate the code for it. 1036b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1037b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Remember the loc for the top of the block being looped over. 1038c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // (Can not reserve a slot in the compiled pattern at this time, because 1039c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // compileInterval needs to reserve also, and blockTopLoc can only reserve 1040b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // once per block.) 1041b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topLoc = blockTopLoc(FALSE); 1042b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1043b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Produce normal looping code. 1044b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru compileInterval(URX_CTR_INIT, URX_CTR_LOOP); 1045b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1046b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Surround the just-emitted normal looping code with a STO_SP ... LD_SP 1047b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // just as if the loop was inclosed in atomic parentheses. 1048b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1049b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // First the STO_SP before the start of the loop 1050b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topLoc); 1051b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t varLoc = fRXPat->fDataSize; // Reserve a data location for saving the 1052b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fDataSize += 1; // state stack ptr. 1053b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_STO_SP, varLoc); 1054b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topLoc); 1055b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1056b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopOp = fRXPat->fCompiledPat->popi(); 1057b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(loopOp) == URX_CTR_LOOP && URX_VAL(loopOp) == topLoc); 1058b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loopOp++; // point LoopOp after the just-inserted STO_SP 1059b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->push(loopOp, *fStatus); 1060b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1061b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Then the LD_SP after the end of the loop 1062b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_LD_SP, varLoc); 1063b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1064b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1065b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1066b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1067b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1068b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doNGInterval: 1069b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Finished scanning a non-greedy {lower,upper}? interval. Generate the code for it. 1070b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru compileInterval(URX_CTR_INIT_NG, URX_CTR_LOOP_NG); 1071b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1072b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1073b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doIntervalError: 1074b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_BAD_INTERVAL); 1075b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1076b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1077b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doLiteralChar: 1078c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We've just scanned a "normal" character from the pattern, 1079b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru literalChar(fC.fChar); 1080b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1081b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1082b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1083c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doEscapedLiteralChar: 1084c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We've just scanned an backslashed escaped character with no 1085c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // special meaning. It represents itself. 1086c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((fModeFlags & UREGEX_ERROR_ON_UNKNOWN_ESCAPES) != 0 && 1087c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru ((fC.fChar >= 0x41 && fC.fChar<= 0x5A) || // in [A-Z] 1088c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru (fC.fChar >= 0x61 && fC.fChar <= 0x7a))) { // in [a-z] 1089c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_BAD_ESCAPE_SEQUENCE); 1090c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1091c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru literalChar(fC.fChar); 1092c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1093c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1094b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1095b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doDotAny: 1096b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // scanned a ".", match any single character. 1097b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1098b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; 1099b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fModeFlags & UREGEX_DOTALL) { 1100b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_DOTANY_ALL, 0); 1101c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else if (fModeFlags & UREGEX_UNIX_LINES) { 1102c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_BUILD(URX_DOTANY_UNIX, 0); 1103b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 1104b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_DOTANY, 0); 1105b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1106b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1107b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1108b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1109b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1110c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doCaret: 1111b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1112c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t op = 0; 1113c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ( (fModeFlags & UREGEX_MULTILINE) == 0 && (fModeFlags & UREGEX_UNIX_LINES) == 0) { 1114c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_CARET; 1115c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) == 0) { 1116c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_CARET_M; 1117c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else if ((fModeFlags & UREGEX_MULTILINE) == 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) { 1118c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_CARET; // Only testing true start of input. 1119c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) { 1120c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_CARET_M_UNIX; 1121c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1122b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus); 1123b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1124b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1125b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1126c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doDollar: 1127b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1128c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t op = 0; 1129c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ( (fModeFlags & UREGEX_MULTILINE) == 0 && (fModeFlags & UREGEX_UNIX_LINES) == 0) { 1130c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_DOLLAR; 1131c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) == 0) { 1132c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_DOLLAR_M; 1133c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else if ((fModeFlags & UREGEX_MULTILINE) == 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) { 1134c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_DOLLAR_D; 1135c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) { 1136c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_DOLLAR_MD; 1137c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1138b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus); 1139b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1140b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1141b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1142b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashA: 1143b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_CARET, 0), *fStatus); 1144b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1145b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1146b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashB: 1147b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1148b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru #if UCONFIG_NO_BREAK_ITERATION==1 1149b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fModeFlags & UREGEX_UWORD) { 1150b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_UNSUPPORTED_ERROR); 1151b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1152b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru #endif 1153b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = (fModeFlags & UREGEX_UWORD)? URX_BACKSLASH_BU : URX_BACKSLASH_B; 1154b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(op, 1), *fStatus); 1155b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1156b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1157b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1158b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashb: 1159b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1160b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru #if UCONFIG_NO_BREAK_ITERATION==1 1161b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fModeFlags & UREGEX_UWORD) { 1162b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_UNSUPPORTED_ERROR); 1163b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1164b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru #endif 1165b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = (fModeFlags & UREGEX_UWORD)? URX_BACKSLASH_BU : URX_BACKSLASH_B; 1166b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus); 1167b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1168b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1169b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1170b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashD: 1171b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_D, 1), *fStatus); 1172b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1173b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1174b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashd: 1175b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_D, 0), *fStatus); 1176b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1177b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1178b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashG: 1179b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_G, 0), *fStatus); 1180b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1181b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1182b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashS: 1183b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement( 1184b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru URX_BUILD(URX_STAT_SETREF_N, URX_ISSPACE_SET), *fStatus); 1185b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1186b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1187b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashs: 1188b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement( 1189b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru URX_BUILD(URX_STATIC_SETREF, URX_ISSPACE_SET), *fStatus); 1190b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1191b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1192b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashW: 1193b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement( 1194b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru URX_BUILD(URX_STAT_SETREF_N, URX_ISWORD_SET), *fStatus); 1195b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1196b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1197b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashw: 1198b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement( 1199b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru URX_BUILD(URX_STATIC_SETREF, URX_ISWORD_SET), *fStatus); 1200b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1201b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1202b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashX: 1203b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_X, 0), *fStatus); 1204b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1205b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1206b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1207b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashZ: 1208b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_DOLLAR, 0), *fStatus); 1209b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1210b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1211b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackslashz: 1212b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_Z, 0), *fStatus); 1213b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1214b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1215b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doEscapeError: 1216b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_BAD_ESCAPE_SEQUENCE); 1217b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1218b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1219b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doExit: 1220b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru returnVal = FALSE; 1221b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1222b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1223b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doProperty: 1224b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1225b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UnicodeSet *theSet = scanProp(); 1226b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru compileSet(theSet); 1227b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1228b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1229b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1230c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doNamedChar: 1231b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1232c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UChar32 c = scanNamedChar(); 1233c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru literalChar(c); 1234b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1235b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1236c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1237b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1238b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBackRef: 1239b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // BackReference. Somewhat unusual in that the front-end can not completely parse 1240b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the regular expression, because the number of digits to be consumed 1241b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // depends on the number of capture groups that have been defined. So 1242b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // we have to do it here instead. 1243b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1244b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t numCaptureGroups = fRXPat->fGroupMap->size(); 1245b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t groupNum = 0; 1246b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 c = fC.fChar; 1247b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1248b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 1249b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Loop once per digit, for max allowed number of digits in a back reference. 1250b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t digit = u_charDigitValue(c); 1251b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru groupNum = groupNum * 10 + digit; 1252b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (groupNum >= numCaptureGroups) { 1253b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1254b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1255b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c = peekCharLL(); 1256b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (RegexStaticSets::gStaticSets->fRuleDigitsAlias->contains(c) == FALSE) { 1257b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1258b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1259b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru nextCharLL(); 1260b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1261b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1262b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Scan of the back reference in the source regexp is complete. Now generate 1263c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // the compiled code for it. 1264b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Because capture groups can be forward-referenced by back-references, 1265b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // we fill the operand with the capture group number. At the end 1266b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of compilation, it will be changed to the variable's location. 1267b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(groupNum > 0); 1268b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; 1269b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fModeFlags & UREGEX_CASE_INSENSITIVE) { 1270b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_BACKREF_I, groupNum); 1271b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 1272b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_BACKREF, groupNum); 1273b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1274b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1275b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1276b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1277b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1278b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1279b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPossessivePlus: 1280b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Possessive ++ quantifier. 1281b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 1282b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. STO_SP 1283b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. body of stuff being iterated over 1284b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. STATE_SAVE 5 1285b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. JMP 2 1286b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5. LD_SP 1287b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 6. ... 1288b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1289b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Note: TODO: This is pretty inefficient. A mass of saved state is built up 1290c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // then unconditionally discarded. Perhaps introduce a new opcode. Ticket 6056 1291b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1292b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1293b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the STO_SP 1294b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topLoc = blockTopLoc(TRUE); 1295b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stoLoc = fRXPat->fDataSize; 1296b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fDataSize++; // Reserve the data location for storing save stack ptr. 1297b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_STO_SP, stoLoc); 1298b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topLoc); 1299b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1300b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the STATE_SAVE 1301b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()+2); 1302b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1303c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1304b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the JMP 1305b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_JMP, topLoc+1); 1306b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1307b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1308b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the LD_SP 1309b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_LD_SP, stoLoc); 1310b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1311b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1312b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1313b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1314b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPossessiveStar: 1315b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Possessive *+ quantifier. 1316b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 1317b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. STO_SP loc 1318b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. STATE_SAVE 5 1319b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. body of stuff being iterated over 1320b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. JMP 2 1321b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5. LD_SP loc 1322b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 6 ... 1323b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // TODO: do something to cut back the state stack each time through the loop. 1324b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1325b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Reserve two slots at the top of the block. 1326b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topLoc = blockTopLoc(TRUE); 1327b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topLoc); 1328b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1329b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // emit STO_SP loc 1330b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stoLoc = fRXPat->fDataSize; 1331b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fDataSize++; // Reserve the data location for storing save stack ptr. 1332b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_STO_SP, stoLoc); 1333b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topLoc); 1334b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1335b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the SAVE_STATE 5 1336b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t L7 = fRXPat->fCompiledPat->size()+1; 1337b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STATE_SAVE, L7); 1338b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topLoc+1); 1339b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1340c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Append the JMP operation. 1341b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_JMP, topLoc+1); 1342b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1343b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1344b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the LD_SP loc 1345b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_LD_SP, stoLoc); 1346b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1347b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1348b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1349b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1350b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doPossessiveOpt: 1351b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Possessive ?+ quantifier. 1352b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compiles to 1353b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. STO_SP loc 1354b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. SAVE_STATE 5 1355b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. body of optional block 1356b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. LD_SP loc 1357b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5. ... 1358b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1359b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1360b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Reserve two slots at the top of the block. 1361b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topLoc = blockTopLoc(TRUE); 1362b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topLoc); 1363b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1364b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the STO_SP 1365b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stoLoc = fRXPat->fDataSize; 1366b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fDataSize++; // Reserve the data location for storing save stack ptr. 1367b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_STO_SP, stoLoc); 1368b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topLoc); 1369b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1370b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the SAVE_STATE 1371b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t continueLoc = fRXPat->fCompiledPat->size()+1; 1372b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STATE_SAVE, continueLoc); 1373b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topLoc+1); 1374b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1375b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit the LD_SP 1376b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_LD_SP, stoLoc); 1377b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1378b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1379b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1380b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1381b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1382b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBeginMatchMode: 1383b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fNewModeFlags = fModeFlags; 1384b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fSetModeFlag = TRUE; 1385b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1386b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1387b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doMatchMode: // (?i) and similar 1388b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1389b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t bit = 0; 1390b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch (fC.fChar) { 1391b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case 0x69: /* 'i' */ bit = UREGEX_CASE_INSENSITIVE; break; 1392c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case 0x64: /* 'd' */ bit = UREGEX_UNIX_LINES; break; 1393b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case 0x6d: /* 'm' */ bit = UREGEX_MULTILINE; break; 1394b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case 0x73: /* 's' */ bit = UREGEX_DOTALL; break; 1395c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case 0x75: /* 'u' */ bit = 0; /* Unicode casing */ break; 1396b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case 0x77: /* 'w' */ bit = UREGEX_UWORD; break; 1397b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case 0x78: /* 'x' */ bit = UREGEX_COMMENTS; break; 1398b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case 0x2d: /* '-' */ fSetModeFlag = FALSE; break; 1399b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru default: 1400b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(FALSE); // Should never happen. Other chars are filtered out 1401b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // by the scanner. 1402b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1403b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fSetModeFlag) { 1404b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fNewModeFlags |= bit; 1405b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 1406b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fNewModeFlags &= ~bit; 1407b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1408b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1409b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1410b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1411b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doSetMatchMode: 1412b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We've got a (?i) or similar. The match mode is being changed, but 1413b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the change is not scoped to a parenthesized block. 1414b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(fNewModeFlags < 0); 1415b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fModeFlags = fNewModeFlags; 1416b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1417b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Prevent any string from spanning across the change of match mode. 1418c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Otherwise the pattern "abc(?i)def" would make a single string of "abcdef" 1419c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fixLiterals(); 1420b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1421b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1422b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1423b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doMatchModeParen: 1424b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We've got a (?i: or similar. Begin a parenthesized block, save old 1425b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // mode flags so they can be restored at the close of the block. 1426b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1427b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Compile to a 1428b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - NOP, which later may be replaced by a save-state if the 1429b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // parenthesized group gets a * quantifier, followed by 1430b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // - NOP, which may later be replaced by a save-state if there 1431b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // is an '|' alternation within the parens. 1432b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 1433b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 1434b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus); 1435b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1436b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // On the Parentheses stack, start a new frame and add the postions 1437b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the two NOPs (a normal non-capturing () frame, except for the 1438b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // saving of the orignal mode flags.) 1439b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fModeFlags, *fStatus); 1440b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(flags, *fStatus); // Frame Marker 1441b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-2, *fStatus); // The first NOP 1442b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus); // The second NOP 1443b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1444b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Set the current mode flags to the new values. 1445b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(fNewModeFlags < 0); 1446b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fModeFlags = fNewModeFlags; 1447b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1448b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1449b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1450b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doBadModeFlag: 1451b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_INVALID_FLAG); 1452b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1453b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1454b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case doSuppressComments: 1455b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We have just scanned a '(?'. We now need to prevent the character scanner from 1456b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // treating a '#' as a to-the-end-of-line comment. 1457b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // (This Perl compatibility just gets uglier and uglier to do...) 1458b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fEOLComments = FALSE; 1459b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1460b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1461b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1462c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetAddAmp: 1463c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1464c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1465c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(chAmp); 1466c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1467c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1468c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1469c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetAddDash: 1470c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1471c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1472c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(chDash); 1473c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1474c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1475c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1476c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBackslash_s: 1477c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1478c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1479c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->addAll(*RegexStaticSets::gStaticSets->fPropSets[URX_ISSPACE_SET]); 1480c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1481c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1482c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1483c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBackslash_S: 1484c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1485c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1486c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet SSet(*RegexStaticSets::gStaticSets->fPropSets[URX_ISSPACE_SET]); 1487c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru SSet.complement(); 1488c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->addAll(SSet); 1489c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1490c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1491c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1492c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBackslash_d: 1493c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1494c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1495c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // TODO - make a static set, ticket 6058. 1496c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_ND_MASK, *fStatus); 1497c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1498c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1499c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1500c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBackslash_D: 1501c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1502c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1503c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet digits; 1504c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // TODO - make a static set, ticket 6058. 1505c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru digits.applyIntPropertyValue(UCHAR_GENERAL_CATEGORY_MASK, U_GC_ND_MASK, *fStatus); 1506c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru digits.complement(); 1507c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->addAll(digits); 1508c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1509c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1510c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1511c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBackslash_w: 1512c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1513c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1514c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->addAll(*RegexStaticSets::gStaticSets->fPropSets[URX_ISWORD_SET]); 1515c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1516c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1517c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1518c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBackslash_W: 1519c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1520c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set = (UnicodeSet *)fSetStack.peek(); 1521c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet SSet(*RegexStaticSets::gStaticSets->fPropSets[URX_ISWORD_SET]); 1522c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru SSet.complement(); 1523c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->addAll(SSet); 1524c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1525c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1526c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1527c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBegin: 1528c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetStack.push(new UnicodeSet(), *fStatus); 1529c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setStart, *fStatus); 1530c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((fModeFlags & UREGEX_CASE_INSENSITIVE) != 0) { 1531c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setCaseClose, *fStatus); 1532c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1533c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1534c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1535c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBeginDifference1: 1536c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We have scanned something like [[abc]-[ 1537c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Set up a new UnicodeSet for the set beginning with the just-scanned '[' 1538c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Push a Difference operator, which will cause the new set to be subtracted from what 1539c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // went before once it is created. 1540c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setPushOp(setDifference1); 1541c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setStart, *fStatus); 1542c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((fModeFlags & UREGEX_CASE_INSENSITIVE) != 0) { 1543c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setCaseClose, *fStatus); 1544c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1545c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1546c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1547c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBeginIntersection1: 1548c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We have scanned something like [[abc]&[ 1549c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Need both the '&' operator and the open '[' operator. 1550c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setPushOp(setIntersection1); 1551c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setStart, *fStatus); 1552c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((fModeFlags & UREGEX_CASE_INSENSITIVE) != 0) { 1553c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setCaseClose, *fStatus); 1554c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1555c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1556c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1557c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetBeginUnion: 1558c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We have scanned something like [[abc][ 1559c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Need to handle the union operation explicitly [[abc] | [ 1560c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setPushOp(setUnion); 1561c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setStart, *fStatus); 1562c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((fModeFlags & UREGEX_CASE_INSENSITIVE) != 0) { 1563c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setCaseClose, *fStatus); 1564c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1565c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1566c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1567c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetDifference2: 1568c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We have scanned something like [abc-- 1569c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Consider this to unambiguously be a set difference operator. 1570c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setPushOp(setDifference2); 1571c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1572c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1573c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetEnd: 1574c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Have encountered the ']' that closes a set. 1575c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Force the evaluation of any pending operations within this set, 1576c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // leave the completed set on the top of the set stack. 1577c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1578c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setEval(setEnd); 1579c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t setOp = fSetOpStack.popi(); 1580c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(setOp==setStart); 1581c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1582c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1583c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1584c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetFinish: 1585c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1586c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Finished a complete set expression, including all nested sets. 1587c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The close bracket has already triggered clearing out pending set operators, 1588c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // the operator stack should be empty and the operand stack should have just 1589c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // one entry, the result set. 1590c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(fSetOpStack.empty()); 1591c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *theSet = (UnicodeSet *)fSetStack.pop(); 1592c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(fSetStack.empty()); 1593c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru compileSet(theSet); 1594c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1595c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1596c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1597c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetIntersection2: 1598c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Have scanned something like [abc&& 1599c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setPushOp(setIntersection2); 1600c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1601c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1602c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetLiteral: 1603c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Union the just-scanned literal character into the set being built. 1604c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // This operation is the highest precedence set operation, so we can always do 1605c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // it immediately, without waiting to see what follows. It is necessary to perform 1606c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // any pending '-' or '&' operation first, because these have the same precedence 1607c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // as union-ing in a literal' 1608c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1609c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setEval(setUnion); 1610c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *s = (UnicodeSet *)fSetStack.peek(); 1611c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru s->add(fC.fChar); 1612c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fLastSetLiteral = fC.fChar; 1613c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1614c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1615c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1616c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetLiteralEscaped: 1617c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // A back-slash escaped literal character was encountered. 1618c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Processing is the same as with setLiteral, above, with the addition of 1619c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // the optional check for errors on escaped ASCII letters. 1620c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1621c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((fModeFlags & UREGEX_ERROR_ON_UNKNOWN_ESCAPES) != 0 && 1622c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru ((fC.fChar >= 0x41 && fC.fChar<= 0x5A) || // in [A-Z] 1623c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru (fC.fChar >= 0x61 && fC.fChar <= 0x7a))) { // in [a-z] 1624c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_BAD_ESCAPE_SEQUENCE); 1625c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1626c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setEval(setUnion); 1627c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *s = (UnicodeSet *)fSetStack.peek(); 1628c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru s->add(fC.fChar); 1629c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fLastSetLiteral = fC.fChar; 1630c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1631c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1632c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1633c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetNamedChar: 1634c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Scanning a \N{UNICODE CHARACTER NAME} 1635c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Aside from the source of the character, the processing is identical to doSetLiteral, 1636c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // above. 1637c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1638c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UChar32 c = scanNamedChar(); 1639c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setEval(setUnion); 1640c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *s = (UnicodeSet *)fSetStack.peek(); 1641c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru s->add(c); 1642c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fLastSetLiteral = c; 1643c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1644c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1645c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1646c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetNamedRange: 1647c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We have scanned literal-\N{CHAR NAME}. Add the range to the set. 1648c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The left character is already in the set, and is saved in fLastSetLiteral. 1649c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The right side needs to be picked up, the scan is at the 'N'. 1650c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Lower Limit > Upper limit being an error matches both Java 1651c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // and ICU UnicodeSet behavior. 1652c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1653c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UChar32 c = scanNamedChar(); 1654c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_SUCCESS(*fStatus) && fLastSetLiteral > c) { 1655c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_INVALID_RANGE); 1656c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1657c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *s = (UnicodeSet *)fSetStack.peek(); 1658c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru s->add(fLastSetLiteral, c); 1659c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fLastSetLiteral = c; 1660c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1661c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1662c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1663c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1664c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetNegate: 1665c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Scanned a '^' at the start of a set. 1666c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Push the negation operator onto the set op stack. 1667c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // A twist for case-insensitive matching: 1668c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // the case closure operation must happen _before_ negation. 1669c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // But the case closure operation will already be on the stack if it's required. 1670c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // This requires checking for case closure, and swapping the stack order 1671c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // if it is present. 1672c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1673c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t tosOp = fSetOpStack.peeki(); 1674c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (tosOp == setCaseClose) { 1675c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.popi(); 1676c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setNegation, *fStatus); 1677c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setCaseClose, *fStatus); 1678c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else { 1679c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(setNegation, *fStatus); 1680c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1681c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1682c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1683c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1684c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetNoCloseError: 1685c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_MISSING_CLOSE_BRACKET); 1686c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1687c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1688c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetOpError: 1689c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_RULE_SYNTAX); // -- or && at the end of a set. Illegal. 1690c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1691c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1692c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetPosixProp: 1693c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1694c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *s = scanPosixProp(); 1695c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (s != NULL) { 1696c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *tos = (UnicodeSet *)fSetStack.peek(); 1697c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru tos->addAll(*s); 1698c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete s; 1699c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } // else error. scanProp() reported the error status already. 1700c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1701c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1702c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1703c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetProp: 1704c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Scanned a \p \P within [brackets]. 1705c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1706c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *s = scanProp(); 1707c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (s != NULL) { 1708c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *tos = (UnicodeSet *)fSetStack.peek(); 1709c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru tos->addAll(*s); 1710c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete s; 1711c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } // else error. scanProp() reported the error status already. 1712c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1713c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1714c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1715c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1716c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case doSetRange: 1717c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // We have scanned literal-literal. Add the range to the set. 1718c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The left character is already in the set, and is saved in fLastSetLiteral. 1719c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The right side is the current character. 1720c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Lower Limit > Upper limit being an error matches both Java 1721c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // and ICU UnicodeSet behavior. 1722c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 1723c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fLastSetLiteral > fC.fChar) { 1724c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_INVALID_RANGE); 1725c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1726c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *s = (UnicodeSet *)fSetStack.peek(); 1727c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru s->add(fLastSetLiteral, fC.fChar); 1728c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 1729c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 1730c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1731b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1732b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru default: 1733b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(FALSE); 1734b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_INTERNAL_ERROR); 1735b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 1736b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1737b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1738b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 1739b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru returnVal = FALSE; 1740b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1741b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1742b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return returnVal; 1743b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 1744b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1745b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1746b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1747b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1748b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1749b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// literalChar We've encountered a literal character from the pattern, 1750b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// or an escape sequence that reduces to a character. 1751b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Add it to the string containing all literal chars/strings from 1752b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// the pattern. 1753b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// If we are in a pattern string already, add the new char to it. 1754b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// If we aren't in a pattern string, begin one now. 1755b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1756b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1757b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::literalChar(UChar32 c) { 1758b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; // An operation in the compiled pattern. 1759b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType; 1760b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t patternLoc; // A position in the compiled pattern. 1761b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLen; 1762b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1763b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1764b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If the last thing compiled into the pattern was not a literal char, 1765b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // force this new literal char to begin a new string, and not append to the previous. 1766b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->lastElementi(); 1767b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType = URX_TYPE(op); 1768b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (!(opType == URX_STRING_LEN || opType == URX_ONECHAR || opType == URX_ONECHAR_I)) { 1769b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fixLiterals(); 1770b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1771b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1772b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fStringOpStart == -1) { 1773b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // First char of a string in the pattern. 1774b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Emit a OneChar op into the compiled pattern. 1775b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru emitONE_CHAR(c); 1776b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1777b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Also add it to the string pool, in case we get a second adjacent literal 1778b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and want to change form ONE_CHAR to STRING 1779b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fStringOpStart = fRXPat->fLiteralText.length(); 1780b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fLiteralText.append(c); 1781b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 1782b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1783c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1784b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We are adding onto an existing string 1785b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fLiteralText.append(c); 1786b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1787b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->lastElementi(); 1788b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType = URX_TYPE(op); 1789b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(opType == URX_ONECHAR || opType == URX_ONECHAR_I || opType == URX_STRING_LEN); 1790b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1791c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // If the most recently emitted op is a URX_ONECHAR, 1792b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (opType == URX_ONECHAR || opType == URX_ONECHAR_I) { 1793b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U16_IS_TRAIL(c) && U16_IS_LEAD(URX_VAL(op))) { 1794b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The most recently emitted op is a ONECHAR that was the first half 1795b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of a surrogate pair. Update the ONECHAR's operand to be the 1796b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // supplementary code point resulting from both halves of the pair. 1797b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c = U16_GET_SUPPLEMENTARY(URX_VAL(op), c); 1798b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(opType, c); 1799b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru patternLoc = fRXPat->fCompiledPat->size() - 1; 1800b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, patternLoc); 1801b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 1802b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1803c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1804b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The most recently emitted op is a ONECHAR. 1805b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We've now received another adjacent char. Change the ONECHAR op 1806b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // to a string op. 1807b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fModeFlags & UREGEX_CASE_INSENSITIVE) { 1808b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STRING_I, fStringOpStart); 1809b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 1810b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STRING, fStringOpStart); 1811b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1812b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru patternLoc = fRXPat->fCompiledPat->size() - 1; 1813b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, patternLoc); 1814b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STRING_LEN, 0); 1815b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1816b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1817c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 1818b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The pattern contains a URX_SRING / URX_STRING_LEN. Update the 1819b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // string length to reflect the new char we just added to the string. 1820b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru stringLen = fRXPat->fLiteralText.length() - fStringOpStart; 1821b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STRING_LEN, stringLen); 1822b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru patternLoc = fRXPat->fCompiledPat->size() - 1; 1823b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, patternLoc); 1824b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 1825b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1826b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1827b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1828b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1829b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1830b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// emitONE_CHAR emit a ONE_CHAR op into the generated code. 1831b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Choose cased or uncased version, depending on the 1832b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// match mode and whether the character itself is cased. 1833b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1834b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1835b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::emitONE_CHAR(UChar32 c) { 1836b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; 1837b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if ((fModeFlags & UREGEX_CASE_INSENSITIVE) && 1838b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru u_hasBinaryProperty(c, UCHAR_CASE_SENSITIVE)) { 1839b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We have a cased character, and are in case insensitive matching mode. 1840b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c = u_foldCase(c, U_FOLD_CASE_DEFAULT); 1841b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_ONECHAR_I, c); 1842b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 1843b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Uncased char, or case sensitive match mode. 1844b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Either way, just generate a literal compare of the char. 1845b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_ONECHAR, c); 1846b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1847b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 1848b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 1849b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1850b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1851b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1852b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1853b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// fixLiterals When compiling something that can follow a literal 1854b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// string in a pattern, we need to "fix" any preceding 1855b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// string, which will cause any subsequent literals to 1856b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// begin a new string, rather than appending to the 1857b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// old one. 1858b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1859b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Optionally, split the last char of the string off into 1860b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// a single "ONE_CHAR" operation, so that quantifiers can 1861b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// apply to that char alone. Example: abc* 1862b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// The * must apply to the 'c' only. 1863b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1864b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1865b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::fixLiterals(UBool split) { 1866b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringStart = fStringOpStart; // start index of the current literal string 1867b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; // An op from/for the compiled pattern. 1868b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType; // An opcode type from the compiled pattern. 1869b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLastCharIdx; 1870b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 lastChar; 1871b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringNextToLastCharIdx; 1872b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 nextToLastChar; 1873b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLen; 1874b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1875c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fStringOpStart = -1; 1876b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (!split) { 1877b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 1878b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1879b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1880b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Split: We need to ensure that the last item in the compiled pattern does 1881b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // not refer to a literal string of more than one char. If it does, 1882b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // separate the last char from the rest of the string. 1883b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1884b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If the last operation from the compiled pattern is not a string, 1885c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // nothing needs to be done 1886b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->lastElementi(); 1887b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType = URX_TYPE(op); 1888b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (opType != URX_STRING_LEN) { 1889b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 1890b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1891b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru stringLen = URX_VAL(op); 1892b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1893b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1894b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Find the position of the last code point in the string (might be a surrogate pair) 1895b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1896b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru stringLastCharIdx = fRXPat->fLiteralText.length(); 1897b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru stringLastCharIdx = fRXPat->fLiteralText.moveIndex32(stringLastCharIdx, -1); 1898b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru lastChar = fRXPat->fLiteralText.char32At(stringLastCharIdx); 1899b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1900b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The string should always be at least two code points long, meaning that there 1901b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // should be something before the last char position that we just found. 1902b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(stringLastCharIdx > stringStart); 1903b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru stringNextToLastCharIdx = fRXPat->fLiteralText.moveIndex32(stringLastCharIdx, -1); 1904b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(stringNextToLastCharIdx >= stringStart); 1905b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru nextToLastChar = fRXPat->fLiteralText.char32At(stringNextToLastCharIdx); 1906b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1907b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (stringNextToLastCharIdx > stringStart) { 1908b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The length of string remaining after removing one char is two or more. 1909b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Leave the string in the compiled pattern, shorten it by one char, 1910b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and append a URX_ONECHAR op for the last char. 1911b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru stringLen -= (fRXPat->fLiteralText.length() - stringLastCharIdx); 1912b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_STRING_LEN, stringLen); 1913b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, fRXPat->fCompiledPat->size() -1); 1914b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru emitONE_CHAR(lastChar); 1915b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 1916b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The original string consisted of exactly two characters. Replace 1917b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the existing compiled URX_STRING/URX_STRING_LEN ops with a pair 1918b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of URX_ONECHARs. 1919b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setSize(fRXPat->fCompiledPat->size() -2); 1920b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru emitONE_CHAR(nextToLastChar); 1921b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru emitONE_CHAR(lastChar); 1922b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1923b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 1924b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1925b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1926b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1927b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1928b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1929b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1930b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1931b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1932b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// insertOp() Insert a slot for a new opcode into the already 1933b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// compiled pattern code. 1934b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1935b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Fill the slot with a NOP. Our caller will replace it 1936b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// with what they really wanted. 1937b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1938b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1939b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::insertOp(int32_t where) { 1940b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UVector32 *code = fRXPat->fCompiledPat; 1941b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(where>0 && where < code->size()); 1942b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1943b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t nop = URX_BUILD(URX_NOP, 0); 1944b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru code->insertElementAt(nop, where, *fStatus); 1945b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1946b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Walk through the pattern, looking for any ops with targets that 1947b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // were moved down by the insert. Fix them. 1948b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loc; 1949b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc=0; loc<code->size(); loc++) { 1950b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = code->elementAti(loc); 1951b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType = URX_TYPE(op); 1952b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opValue = URX_VAL(op); 1953b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if ((opType == URX_JMP || 1954b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType == URX_JMPX || 1955b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType == URX_STATE_SAVE || 1956b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType == URX_CTR_LOOP || 1957b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType == URX_CTR_LOOP_NG || 1958b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType == URX_JMP_SAV || 1959b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType == URX_RELOC_OPRND) && opValue > where) { 1960b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Target location for this opcode is after the insertion point and 1961b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // needs to be incremented to adjust for the insertion. 1962b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opValue++; 1963b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(opType, opValue); 1964b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru code->setElementAt(op, loc); 1965b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1966b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1967b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1968b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Now fix up the parentheses stack. All positive values in it are locations in 1969b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the compiled pattern. (Negative values are frame boundaries, and don't need fixing.) 1970b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc=0; loc<fParenStack.size(); loc++) { 1971b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t x = fParenStack.elementAti(loc); 1972b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(x < code->size()); 1973b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (x>where) { 1974b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru x++; 1975b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParenStack.setElementAt(x, loc); 1976b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1977b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1978b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1979b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fMatchCloseParen > where) { 1980b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fMatchCloseParen++; 1981b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1982b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fMatchOpenParen > where) { 1983b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fMatchOpenParen++; 1984b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 1985b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 1986b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1987b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1988b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 1989b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 1990b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1991b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// blockTopLoc() Find or create a location in the compiled pattern 1992b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// at the start of the operation or block that has 1993b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// just been compiled. Needed when a quantifier (* or 1994b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// whatever) appears, and we need to add an operation 1995b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// at the start of the thing being quantified. 1996b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1997b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// (Parenthesized Blocks) have a slot with a NOP that 1998b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// is reserved for this purpose. .* or similar don't 1999b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// and a slot needs to be added. 2000b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2001b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// parameter reserveLoc : TRUE - ensure that there is space to add an opcode 2002b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// at the returned location. 2003c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// FALSE - just return the address, 2004b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// do not reserve a location there. 2005b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2006b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2007b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruint32_t RegexCompile::blockTopLoc(UBool reserveLoc) { 2008b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t theLoc; 2009b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fRXPat->fCompiledPat->size() == fMatchCloseParen) 2010b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2011b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The item just processed is a parenthesized block. 2012b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru theLoc = fMatchOpenParen; // A slot is already reserved for us. 2013b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(theLoc > 0); 2014b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(((uint32_t)fRXPat->fCompiledPat->elementAti(theLoc))) == URX_NOP); 2015b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2016b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru else { 2017b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Item just compiled is a single thing, a ".", or a single char, or a set reference. 2018b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // No slot for STATE_SAVE was pre-reserved in the compiled code. 2019b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We need to make space now. 2020b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fixLiterals(TRUE); // If last item was a string, separate the last char. 2021b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru theLoc = fRXPat->fCompiledPat->size()-1; 2022b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (reserveLoc) { 2023b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru /*int32_t opAtTheLoc = fRXPat->fCompiledPat->elementAti(theLoc);*/ 2024b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t nop = URX_BUILD(URX_NOP, 0); 2025b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->insertElementAt(nop, theLoc, *fStatus); 2026b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2027b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2028b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return theLoc; 2029b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 2030b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2031b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2032b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2033b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2034b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2035b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// handleCloseParen When compiling a close paren, we need to go back 2036b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// and fix up any JMP or SAVE operations within the 2037b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// parenthesized block that need to target the end 2038b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// of the block. The locations of these are kept on 2039b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// the paretheses stack. 2040b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2041b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// This function is called both when encountering a 2042b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// real ) and at the end of the pattern. 2043b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2044b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2045b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::handleCloseParen() { 2046b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t patIdx; 2047b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t patOp; 2048b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fParenStack.size() <= 0) { 2049b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_MISMATCHED_PAREN); 2050b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 2051b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2052b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2053b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Force any literal chars that may follow the close paren to start a new string, 2054b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and not attach to any preceding it. 2055b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fixLiterals(FALSE); 2056b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2057b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Fixup any operations within the just-closed parenthesized group 2058b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // that need to reference the end of the (block). 2059b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // (The first one popped from the stack is an unused slot for 2060b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // alternation (OR) state save, but applying the fixup to it does no harm.) 2061b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 2062b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru patIdx = fParenStack.popi(); 2063b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (patIdx < 0) { 2064b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // value < 0 flags the start of the frame on the paren stack. 2065b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2066b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2067b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(patIdx>0 && patIdx <= fRXPat->fCompiledPat->size()); 2068b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru patOp = fRXPat->fCompiledPat->elementAti(patIdx); 2069b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_VAL(patOp) == 0); // Branch target for JMP should not be set. 2070b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru patOp |= fRXPat->fCompiledPat->size(); // Set it now. 2071b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(patOp, patIdx); 2072b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fMatchOpenParen = patIdx; 2073b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2074b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2075b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // At the close of any parenthesized block, restore the match mode flags to 2076b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the value they had at the open paren. Saved value is 2077c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // at the top of the paren stack. 2078b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fModeFlags = fParenStack.popi(); 2079b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(fModeFlags < 0); 2080c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2081b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // DO any additional fixups, depending on the specific kind of 2082b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // parentesized grouping this is 2083b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2084b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch (patIdx) { 2085b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case plain: 2086b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case flags: 2087b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // No additional fixups required. 2088b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // (Grouping-only parentheses) 2089b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2090b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case capturing: 2091b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Capturing Parentheses. 2092b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Insert a End Capture op into the pattern. 2093b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The frame offset of the variables for this cg is obtained from the 2094b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // start capture op and put it into the end-capture op. 2095b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2096b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t captureOp = fRXPat->fCompiledPat->elementAti(fMatchOpenParen+1); 2097b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(captureOp) == URX_START_CAPTURE); 2098b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2099b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t frameVarLocation = URX_VAL(captureOp); 2100b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t endCaptureOp = URX_BUILD(URX_END_CAPTURE, frameVarLocation); 2101b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(endCaptureOp, *fStatus); 2102b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2103b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2104b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case atomic: 2105b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Atomic Parenthesis. 2106b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Insert a LD_SP operation to restore the state stack to the position 2107b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // it was when the atomic parens were entered. 2108b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2109b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stoOp = fRXPat->fCompiledPat->elementAti(fMatchOpenParen+1); 2110b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(stoOp) == URX_STO_SP); 2111b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stoLoc = URX_VAL(stoOp); 2112b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t ldOp = URX_BUILD(URX_LD_SP, stoLoc); 2113b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(ldOp, *fStatus); 2114b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2115b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2116b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2117b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case lookAhead: 2118b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2119c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t startOp = fRXPat->fCompiledPat->elementAti(fMatchOpenParen-5); 2120b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(startOp) == URX_LA_START); 2121b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = URX_VAL(startOp); 2122b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LA_END, dataLoc); 2123b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2124b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2125b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2126b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2127b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case negLookAhead: 2128b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2129b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // See comment at doOpenLookAheadNeg 2130b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t startOp = fRXPat->fCompiledPat->elementAti(fMatchOpenParen-1); 2131b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(startOp) == URX_LA_START); 2132b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = URX_VAL(startOp); 2133b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LA_END, dataLoc); 2134b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2135c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_BUILD(URX_BACKTRACK, 0); 2136c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2137c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru op = URX_BUILD(URX_LA_END, 0); 2138b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2139b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2140b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Patch the URX_SAVE near the top of the block. 2141c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The destination of the SAVE is the final LA_END that was just added. 2142b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveOp = fRXPat->fCompiledPat->elementAti(fMatchOpenParen); 2143b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(saveOp) == URX_STATE_SAVE); 2144c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t dest = fRXPat->fCompiledPat->size()-1; 2145b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru saveOp = URX_BUILD(URX_STATE_SAVE, dest); 2146b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(saveOp, fMatchOpenParen); 2147b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2148b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2149b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2150b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case lookBehind: 2151b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2152b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // See comment at doOpenLookBehind. 2153c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2154b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Append the URX_LB_END and URX_LA_END to the compiled pattern. 2155b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t startOp = fRXPat->fCompiledPat->elementAti(fMatchOpenParen-4); 2156b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(startOp) == URX_LB_START); 2157b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = URX_VAL(startOp); 2158b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LB_END, dataLoc); 2159b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2160b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_LA_END, dataLoc); 2161b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2162b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2163b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Determine the min and max bounds for the length of the 2164b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // string that the pattern can match. 2165b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // An unbounded upper limit is an error. 2166b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t patEnd = fRXPat->fCompiledPat->size() - 1; 2167b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t minML = minMatchLength(fMatchOpenParen, patEnd); 2168b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t maxML = maxMatchLength(fMatchOpenParen, patEnd); 2169b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (maxML == INT32_MAX) { 2170b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_LOOK_BEHIND_LIMIT); 2171b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2172b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2173b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(minML <= maxML); 2174b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2175b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Insert the min and max match len bounds into the URX_LB_CONT op that 2176b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // appears at the top of the look-behind block, at location fMatchOpenParen+1 2177b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(minML, fMatchOpenParen-2); 2178b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(maxML, fMatchOpenParen-1); 2179b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2180b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2181b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2182b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2183b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2184b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2185b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case lookBehindN: 2186b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2187b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // See comment at doOpenLookBehindNeg. 2188c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2189b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Append the URX_LBN_END to the compiled pattern. 2190b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t startOp = fRXPat->fCompiledPat->elementAti(fMatchOpenParen-5); 2191b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(startOp) == URX_LB_START); 2192b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dataLoc = URX_VAL(startOp); 2193b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(URX_LBN_END, dataLoc); 2194b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2195b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2196b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Determine the min and max bounds for the length of the 2197b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // string that the pattern can match. 2198b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // An unbounded upper limit is an error. 2199b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t patEnd = fRXPat->fCompiledPat->size() - 1; 2200b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t minML = minMatchLength(fMatchOpenParen, patEnd); 2201b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t maxML = maxMatchLength(fMatchOpenParen, patEnd); 2202b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (maxML == INT32_MAX) { 2203b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_LOOK_BEHIND_LIMIT); 2204b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2205b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2206b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(minML <= maxML); 2207b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2208b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Insert the min and max match len bounds into the URX_LB_CONT op that 2209b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // appears at the top of the look-behind block, at location fMatchOpenParen+1 2210b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(minML, fMatchOpenParen-3); 2211b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(maxML, fMatchOpenParen-2); 2212b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2213b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Insert the pattern location to continue at after a successful match 2214b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // as the last operand of the URX_LBN_CONT 2215b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_RELOC_OPRND, fRXPat->fCompiledPat->size()); 2216b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, fMatchOpenParen-1); 2217b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2218b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2219b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2220b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2221b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2222b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru default: 2223b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(FALSE); 2224b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2225b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2226b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // remember the next location in the compiled pattern. 2227b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The compilation of Quantifiers will look at this to see whether its looping 2228b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // over a parenthesized block or a single item 2229b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fMatchCloseParen = fRXPat->fCompiledPat->size(); 2230b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 2231b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2232b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2233b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2234b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2235b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2236b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// compileSet Compile the pattern operations for a reference to a 2237b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// UnicodeSet. 2238b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2239b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2240b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::compileSet(UnicodeSet *theSet) 2241b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 2242b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (theSet == NULL) { 2243b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 2244b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2245c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Remove any strings from the set. 2246c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // There shoudn't be any, but just in case. 2247c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // (Case Closure can add them; if we had a simple case closure avaialble that 2248c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // ignored strings, that would be better.) 2249c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru theSet->removeAllStrings(); 2250b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t setSize = theSet->size(); 2251b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 firstSetChar = theSet->charAt(0); 2252b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2253b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch (setSize) { 2254c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case 0: 2255b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2256c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Set of no elements. Always fails to match. 2257b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKTRACK, 0), *fStatus); 2258b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru delete theSet; 2259b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2260b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2261c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2262b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case 1: 2263b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2264b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The set contains only a single code point. Put it into 2265b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the compiled pattern as a single char operation rather 2266b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // than a set, and discard the set itself. 2267b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru literalChar(firstSetChar); 2268b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru delete theSet; 2269b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2270b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2271c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2272c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru default: 2273b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2274b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The set contains two or more chars. (the normal case) 2275b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Put it into the compiled pattern as a set. 2276b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t setNumber = fRXPat->fSets->size(); 2277b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fSets->addElement(theSet, *fStatus); 2278b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t setOp = URX_BUILD(URX_SETREF, setNumber); 2279b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(setOp, *fStatus); 2280b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2281b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2282b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 2283b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2284b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2285b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2286b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2287b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// compileInterval Generate the code for a {min, max} style interval quantifier. 2288b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Except for the specific opcodes used, the code is the same 2289b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// for all three types (greedy, non-greedy, possessive) of 2290b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// intervals. The opcodes are supplied as parameters. 2291b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2292b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// The code for interval loops has this form: 2293b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 0 CTR_INIT counter loc (in stack frame) 2294b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 1 5 patt address of CTR_LOOP at bottom of block 2295b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2 min count 2296b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3 max count (-1 for unbounded) 2297b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 4 ... block to be iterated over 2298c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 5 CTR_LOOP 2299c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 2300c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// In 2301b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2302b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::compileInterval(int32_t InitOp, int32_t LoopOp) 2303b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 2304b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The CTR_INIT op at the top of the block with the {n,m} quantifier takes 2305b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // four slots in the compiled code. Reserve them. 2306b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topOfBlock = blockTopLoc(TRUE); 2307b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topOfBlock); 2308b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topOfBlock); 2309b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topOfBlock); 2310b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2311b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The operands for the CTR_INIT opcode include the index in the matcher data 2312b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the counter. Allocate it now. 2313b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t counterLoc = fRXPat->fFrameSize; 2314b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fFrameSize++; 2315b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2316b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = URX_BUILD(InitOp, counterLoc); 2317b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topOfBlock); 2318b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2319b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The second operand of CTR_INIT is the location following the end of the loop. 2320b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Must put in as a URX_RELOC_OPRND so that the value will be adjusted if the 2321b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // compilation of something later on causes the code to grow and the target 2322b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // position to move. 2323b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopEnd = fRXPat->fCompiledPat->size(); 2324b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(URX_RELOC_OPRND, loopEnd); 2325b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, topOfBlock+1); 2326b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2327b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Followed by the min and max counts. 2328b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(fIntervalLow, topOfBlock+2); 2329b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(fIntervalUpper, topOfBlock+3); 2330b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2331b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Apend the CTR_LOOP op. The operand is the location of the CTR_INIT op. 2332b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Goes at end of the block being looped over, so just append to the code so far. 2333b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(LoopOp, topOfBlock); 2334b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2335b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2336b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if ((fIntervalLow & 0xff000000) != 0 || 2337b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fIntervalUpper > 0 && (fIntervalUpper & 0xff000000) != 0) { 2338b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_NUMBER_TOO_BIG); 2339b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2340b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2341b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fIntervalLow > fIntervalUpper && fIntervalUpper != -1) { 2342b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_MAX_LT_MIN); 2343b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2344b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 2345b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2346b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2347b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2348b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruUBool RegexCompile::compileInlineInterval() { 2349b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fIntervalUpper > 10 || fIntervalUpper < fIntervalLow) { 2350b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Too big to inline. Fail, which will cause looping code to be generated. 2351b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // (Upper < Lower picks up unbounded upper and errors, both.) 2352b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return FALSE; 2353b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2354b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2355b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t topOfBlock = blockTopLoc(FALSE); 2356b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fIntervalUpper == 0) { 2357b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Pathological case. Attempt no matches, as if the block doesn't exist. 2358b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setSize(topOfBlock); 2359b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return TRUE; 2360b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2361b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2362b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (topOfBlock != fRXPat->fCompiledPat->size()-1 && fIntervalUpper != 1) { 2363b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The thing being repeated is not a single op, but some 2364b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // more complex block. Do it as a loop, not inlines. 2365b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Note that things "repeated" a max of once are handled as inline, because 2366b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the one copy of the code already generated is just fine. 2367b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return FALSE; 2368b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2369b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2370b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Pick up the opcode that is to be repeated 2371b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2372b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = fRXPat->fCompiledPat->elementAti(topOfBlock); 2373b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2374c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Compute the pattern location where the inline sequence 2375b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // will end, and set up the state save op that will be needed. 2376c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 2377b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t endOfSequenceLoc = fRXPat->fCompiledPat->size()-1 2378b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru + fIntervalUpper + (fIntervalUpper-fIntervalLow); 2379b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t saveOp = URX_BUILD(URX_STATE_SAVE, endOfSequenceLoc); 2380b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fIntervalLow == 0) { 2381b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru insertOp(topOfBlock); 2382b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(saveOp, topOfBlock); 2383b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2384b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2385b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2386b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2387b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Loop, emitting the op for the thing being repeated each time. 2388b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Loop starts at 1 because one instance of the op already exists in the pattern, 2389b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // it was put there when it was originally encountered. 2390b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t i; 2391b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (i=1; i<fIntervalUpper; i++ ) { 2392b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (i == fIntervalLow) { 2393b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(saveOp, *fStatus); 2394b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2395b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (i > fIntervalLow) { 2396b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(saveOp, *fStatus); 2397b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2398b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->addElement(op, *fStatus); 2399b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2400b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return TRUE; 2401b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 2402b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2403b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2404b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2405b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2406b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2407b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// matchStartType Determine how a match can start. 2408b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Used to optimize find() operations. 2409b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2410b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Operation is very similar to minMatchLength(). Walk the compiled 2411b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// pattern, keeping an on-going minimum-match-length. For any 2412b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// op where the min match coming in is zero, add that ops possible 2413b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// starting matches to the possible starts for the overall pattern. 2414b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2415b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2416b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::matchStartType() { 2417b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 2418b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 2419b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2420b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2421b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2422b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loc; // Location in the pattern of the current op being processed. 2423b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; // The op being processed 2424b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType; // The opcode type of the op 2425b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t currentLen = 0; // Minimum length of a match to this point (loc) in the pattern 2426b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t numInitialStrings = 0; // Number of strings encountered that could match at start. 2427b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2428b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UBool atStart = TRUE; // True if no part of the pattern yet encountered 2429b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // could have advanced the position in a match. 2430b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // (Maximum match length so far == 0) 2431b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2432b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // forwardedLength is a vector holding minimum-match-length values that 2433b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // are propagated forward in the pattern by JMP or STATE_SAVE operations. 2434b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // It must be one longer than the pattern being checked because some ops 2435b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // will jmp to a end-of-block+1 location from within a block, and we must 2436b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // count those when checking the block. 2437b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t end = fRXPat->fCompiledPat->size(); 2438b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UVector32 forwardedLength(end+1, *fStatus); 2439b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setSize(end+1); 2440b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc=3; loc<end; loc++) { 2441b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(INT32_MAX, loc); 2442b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2443b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2444b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc = 3; loc<end; loc++) { 2445b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->elementAti(loc); 2446b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType = URX_TYPE(op); 2447b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2448b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The loop is advancing linearly through the pattern. 2449b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If the op we are now at was the destination of a branch in the pattern, 2450b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and that path has a shorter minimum length than the current accumulated value, 2451b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // replace the current accumulated value. 2452b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(loc) < currentLen) { 2453b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc); 2454b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(currentLen>=0 && currentLen < INT32_MAX); 2455b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2456b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2457b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch (opType) { 2458b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Ops that don't change the total length matched 2459b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RESERVED_OP: 2460b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END: 2461c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_FAIL: 2462b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_LEN: 2463b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_NOP: 2464b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_START_CAPTURE: 2465b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END_CAPTURE: 2466b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_B: 2467b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_BU: 2468b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_G: 2469b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_Z: 2470b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOLLAR: 2471c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_M: 2472c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_D: 2473c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_MD: 2474b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RELOC_OPRND: 2475b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_INP_LOC: 2476b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF: // BackRef. Must assume that it might be a zero length match 2477b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF_I: 2478b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2479b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_SP: // Setup for atomic or possessive blocks. Doesn't change what can match. 2480b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LD_SP: 2481b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2482c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2483b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET: 2484b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (atStart) { 2485b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStartType = START_START; 2486b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2487b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2488b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2489b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET_M: 2490c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_CARET_M_UNIX: 2491b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (atStart) { 2492b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStartType = START_LINE; 2493b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2494b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2495c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2496b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR: 2497b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2498b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // This character could appear at the start of a match. 2499b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Add it to the set of possible starting characters. 2500b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->add(URX_VAL(op)); 2501b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2502b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2503b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2504b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2505b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2506b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2507c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2508c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_SETREF: 2509b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2510b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t sn = URX_VAL(op); 2511b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(sn > 0 && sn < fRXPat->fSets->size()); 2512b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru const UnicodeSet *s = (UnicodeSet *)fRXPat->fSets->elementAt(sn); 2513b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->addAll(*s); 2514b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2515b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2516b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2517b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2518b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2519b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2520b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_SR_I: 2521b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // [Set]*, like a SETREF, above, in what it can match, 2522b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // but may not match at all, so currentLen is not incremented. 2523b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2524b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t sn = URX_VAL(op); 2525b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(sn > 0 && sn < fRXPat->fSets->size()); 2526b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru const UnicodeSet *s = (UnicodeSet *)fRXPat->fSets->elementAt(sn); 2527b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->addAll(*s); 2528b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2529b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2530b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2531b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2532b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2533b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_DOT_I: 2534b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2535b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // .* at the start of a pattern. 2536b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Any character can begin the match. 2537b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->clear(); 2538b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->complement(); 2539b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2540b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2541b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2542b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2543b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2544b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2545c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_STATIC_SETREF: 2546b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2547b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t sn = URX_VAL(op); 2548b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(sn>0 && sn<URX_LAST_SET); 2549b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru const UnicodeSet *s = fRXPat->fStaticSets[sn]; 2550b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->addAll(*s); 2551b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2552b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2553b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2554b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2555b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2556b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2557b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2558b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2559c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_STAT_SETREF_N: 2560b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2561b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t sn = URX_VAL(op); 2562b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru const UnicodeSet *s = fRXPat->fStaticSets[sn]; 2563b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UnicodeSet sc(*s); 2564b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru sc.complement(); 2565b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->addAll(sc); 2566b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2567b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2568b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2569b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2570b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2571b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2572b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2573b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2574b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_D: 2575b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Digit Char 2576b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2577c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet s; 2578b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru s.applyIntPropertyValue(UCHAR_GENERAL_CATEGORY_MASK, U_GC_ND_MASK, *fStatus); 2579b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_VAL(op) != 0) { 2580b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru s.complement(); 2581b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2582b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->addAll(s); 2583b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2584b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2585b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2586b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2587b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2588b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2589b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2590b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR_I: 2591b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Case Insensitive Single Character. 2592b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2593b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 c = URX_VAL(op); 2594b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (u_hasBinaryProperty(c, UCHAR_CASE_SENSITIVE)) { 2595b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // character may have distinct cased forms. Add all of them 2596b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // to the set of possible starting match chars. 2597b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UnicodeSet s(c, c); 2598b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru s.closeOver(USET_CASE_INSENSITIVE); 2599b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->addAll(s); 2600b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 2601b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Char has no case variants. Just add it as-is to the 2602b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // set of possible starting chars. 2603b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->add(c); 2604b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2605b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2606b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2607b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2608b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2609b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2610b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2611b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2612b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_X: // Grahpeme Cluster. Minimum is 1, max unbounded. 2613b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOTANY_ALL: // . matches one or two. 2614b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOTANY: 2615c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOTANY_UNIX: 2616b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2617b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // These constructs are all bad news when they appear at the start 2618b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of a match. Any character can begin the match. 2619b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->clear(); 2620b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->complement(); 2621b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; 2622b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2623b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2624b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2625b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2626b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2627b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2628b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMPX: 2629b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; // Except for extra operand on URX_JMPX, same as URX_JMP. 2630b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP: 2631b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2632b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 2633b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest < loc) { 2634b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Loop of some kind. Can safely ignore, the worst that will happen 2635b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // is that we understate the true minimum length 2636b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc+1); 2637c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2638b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 2639b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Forward jump. Propagate the current min length to the target loc of the jump. 2640b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(jmpDest <= end+1); 2641b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(jmpDest) > currentLen) { 2642b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 2643b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2644b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2645b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2646b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2647b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2648b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2649b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV: 2650b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV_X: 2651b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Combo of state save to the next loc, + jmp backwards. 2652b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Net effect on min. length computation is nothing. 2653b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2654b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2655b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2656c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_BACKTRACK: 2657b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Fails are kind of like a branch, except that the min length was 2658b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // propagated already, by the state save. 2659b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc+1); 2660b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2661b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2662b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2663b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2664b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STATE_SAVE: 2665b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2666b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // State Save, for forward jumps, propagate the current minimum. 2667b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the state save. 2668b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 2669b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest > loc) { 2670b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen < forwardedLength.elementAti(jmpDest)) { 2671b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 2672b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2673c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 2674b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2675b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2676b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2677c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2678b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2679b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2680b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2681b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING: 2682b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2683b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; 2684b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLenOp = fRXPat->fCompiledPat->elementAti(loc); 2685b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLen = URX_VAL(stringLenOp); 2686b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(stringLenOp) == URX_STRING_LEN); 2687b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(stringLenOp >= 2); 2688b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2689b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Add the starting character of this string to the set of possible starting 2690b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // characters for this pattern. 2691b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringStartIdx = URX_VAL(op); 2692b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 c = fRXPat->fLiteralText.char32At(stringStartIdx); 2693b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->add(c); 2694b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2695b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Remember this string. After the entire pattern has been checked, 2696b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // if nothing else is identified that can start a match, we'll use it. 2697b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings++; 2698b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialStringIdx = stringStartIdx; 2699b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialStringLen = stringLen; 2700b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2701c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2702b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen += stringLen; 2703b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2704b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2705b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2706b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2707b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_I: 2708b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2709b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Case-insensitive string. Unlike exact-match strings, we won't 2710b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // attempt a string search for possible match positions. But we 2711b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // do update the set of possible starting characters. 2712b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; 2713b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLenOp = fRXPat->fCompiledPat->elementAti(loc); 2714b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLen = URX_VAL(stringLenOp); 2715b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(URX_TYPE(stringLenOp) == URX_STRING_LEN); 2716b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(stringLenOp >= 2); 2717b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == 0) { 2718b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Add the starting character of this string to the set of possible starting 2719b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // characters for this pattern. 2720b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringStartIdx = URX_VAL(op); 2721b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 c = fRXPat->fLiteralText.char32At(stringStartIdx); 2722b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UnicodeSet s(c, c); 2723b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru s.closeOver(USET_CASE_INSENSITIVE); 2724b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars->addAll(s); 2725b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru numInitialStrings += 2; // Matching on an initial string not possible. 2726b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2727b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen += stringLen; 2728b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2729b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2730b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2731b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2732b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT: 2733b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT_NG: 2734b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2735b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Loop Init Ops. These don't change the min length, but they are 4 word ops 2736b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // so location must be updated accordingly. 2737c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Loop Init Ops. 2738b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If the min loop count == 0 2739b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // move loc forwards to the end of the loop, skipping over the body. 2740c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // If the min count is > 0, 2741b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // continue normal processing of the body of the loop. 2742b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopEndLoc = fRXPat->fCompiledPat->elementAti(loc+1); 2743b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loopEndLoc = URX_VAL(loopEndLoc); 2744b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t minLoopCount = fRXPat->fCompiledPat->elementAti(loc+2); 2745b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (minLoopCount == 0) { 2746b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Min Loop Count of 0, treat like a forward branch and 2747b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // move the current minimum length up to the target 2748b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // (end of loop) location. 2749b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(loopEndLoc <= end+1); 2750b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(loopEndLoc) > currentLen) { 2751b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, loopEndLoc); 2752b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2753c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 2754b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc+=3; // Skips over operands of CTR_INIT 2755b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2756b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2757b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2758b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2759b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2760b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP: 2761b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP_NG: 2762c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Loop ops. 2763b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The jump is conditional, backwards only. 2764b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2765b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2766c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2767b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_C: 2768b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // More loop ops. These state-save to themselves. 2769b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // don't change the minimum match 2770b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru atStart = FALSE; 2771b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2772c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2773b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2774b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_START: 2775b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_START: 2776b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2777b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Look-around. Scan forward until the matching look-ahead end, 2778b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // without processing the look-around block. This is overly pessimistic. 2779c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2780c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Keep track of the nesting depth of look-around blocks. Boilerplate code for 2781c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // lookahead contains two LA_END instructions, so count goes up by two 2782c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // for each LA_START. 2783c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t depth = (opType == URX_LA_START? 2: 1); 2784b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 2785b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; 2786b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->elementAti(loc); 2787c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (URX_TYPE(op) == URX_LA_START) { 2788c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru depth+=2; 2789c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 2790c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (URX_TYPE(op) == URX_LB_START) { 2791b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru depth++; 2792b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2793b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(op) == URX_LA_END || URX_TYPE(op)==URX_LBN_END) { 2794c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru depth--; 2795b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (depth == 0) { 2796b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2797b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2798b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2799b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(op) == URX_STATE_SAVE) { 2800b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Need this because neg lookahead blocks will FAIL to outside 2801b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the block. 2802b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 2803b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest > loc) { 2804b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen < forwardedLength.elementAti(jmpDest)) { 2805b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 2806b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2807b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2808b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2809c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(loc <= end); 2810b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2811b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2812b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2813c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2814b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_END: 2815b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_CONT: 2816b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_END: 2817b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_CONT: 2818b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_END: 2819c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(FALSE); // Shouldn't get here. These ops should be 2820b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // consumed by the scan in URX_LA_START and LB_START 2821b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2822b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2823c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2824b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru default: 2825b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(FALSE); 2826b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2827c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2828b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2829b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2830b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2831b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We have finished walking through the ops. Check whether some forward jump 2832b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // propagated a shorter length to location end+1. 2833b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(end+1) < currentLen) { 2834b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(end+1); 2835b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2836b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2837b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2838b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChars8->init(fRXPat->fInitialChars); 2839b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2840b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2841b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Sort out what we should check for when looking for candidate match start positions. 2842b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // In order of preference, 2843b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 1. Start of input text buffer. 2844b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2. A literal string. 2845b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3. Start of line in multi-line mode. 2846b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 4. A single literal character. 2847b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 5. A character from a set of characters. 2848b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 2849b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fRXPat->fStartType == START_START) { 2850b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Match only at the start of an input text string. 2851b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // start type is already set. We're done. 2852b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else if (numInitialStrings == 1 && fRXPat->fMinMatchLen > 0) { 2853b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Match beginning only with a literal string. 2854b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 c = fRXPat->fLiteralText.char32At(fRXPat->fInitialStringIdx); 2855b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(fRXPat->fInitialChars->contains(c)); 2856b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStartType = START_STRING; 2857b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChar = c; 2858b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else if (fRXPat->fStartType == START_LINE) { 2859b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Match at start of line in Multi-Line mode. 2860b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Nothing to do here; everything is already set. 2861b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else if (fRXPat->fMinMatchLen == 0) { 2862b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Zero length match possible. We could start anywhere. 2863b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStartType = START_NO_INFO; 2864b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else if (fRXPat->fInitialChars->size() == 1) { 2865b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // All matches begin with the same char. 2866b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStartType = START_CHAR; 2867b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fInitialChar = fRXPat->fInitialChars->charAt(0); 2868b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(fRXPat->fInitialChar != (UChar32)-1); 2869b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else if (fRXPat->fInitialChars->contains((UChar32)0, (UChar32)0x10ffff) == FALSE && 2870b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fMinMatchLen > 0) { 2871b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Matches start with a set of character smaller than the set of all chars. 2872b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStartType = START_SET; 2873b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 2874b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Matches can start with anything 2875b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fStartType = START_NO_INFO; 2876b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2877b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2878b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 2879b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 2880b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2881b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2882b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2883b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2884b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2885b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// minMatchLength Calculate the length of the shortest string that could 2886c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// match the specified pattern. 2887b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Length is in 16 bit code units, not code points. 2888b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2889b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// The calculated length may not be exact. The returned 2890b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// value may be shorter than the actual minimum; it must 2891b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// never be longer. 2892b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2893b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// start and end are the range of p-code operations to be 2894b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// examined. The endpoints are included in the range. 2895b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 2896b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 2897b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruint32_t RegexCompile::minMatchLength(int32_t start, int32_t end) { 2898b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 2899b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return 0; 2900b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2901b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2902b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(start <= end); 2903b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(end < fRXPat->fCompiledPat->size()); 2904b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2905b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2906b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loc; 2907b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; 2908b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType; 2909b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t currentLen = 0; 2910b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2911b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2912b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // forwardedLength is a vector holding minimum-match-length values that 2913b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // are propagated forward in the pattern by JMP or STATE_SAVE operations. 2914b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // It must be one longer than the pattern being checked because some ops 2915b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // will jmp to a end-of-block+1 location from within a block, and we must 2916b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // count those when checking the block. 2917b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UVector32 forwardedLength(end+2, *fStatus); 2918b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setSize(end+2); 2919b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc=start; loc<=end+1; loc++) { 2920b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(INT32_MAX, loc); 2921b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2922b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2923b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc = start; loc<=end; loc++) { 2924b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->elementAti(loc); 2925b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType = URX_TYPE(op); 2926b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2927b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The loop is advancing linearly through the pattern. 2928b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If the op we are now at was the destination of a branch in the pattern, 2929b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and that path has a shorter minimum length than the current accumulated value, 2930b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // replace the current accumulated value. 2931c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // U_ASSERT(currentLen>=0 && currentLen < INT32_MAX); // MinLength == INT32_MAX for some 2932c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // no-match-possible cases. 2933b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(loc) < currentLen) { 2934b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc); 2935b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(currentLen>=0 && currentLen < INT32_MAX); 2936b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 2937b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2938b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch (opType) { 2939b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Ops that don't change the total length matched 2940b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RESERVED_OP: 2941b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END: 2942b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_LEN: 2943b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_NOP: 2944b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_START_CAPTURE: 2945b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END_CAPTURE: 2946b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_B: 2947b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_BU: 2948b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_G: 2949b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_Z: 2950b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET: 2951b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOLLAR: 2952c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_M: 2953c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_D: 2954c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_MD: 2955b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RELOC_OPRND: 2956b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_INP_LOC: 2957b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET_M: 2958c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_CARET_M_UNIX: 2959b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF: // BackRef. Must assume that it might be a zero length match 2960b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF_I: 2961b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2962b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_SP: // Setup for atomic or possessive blocks. Doesn't change what can match. 2963b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LD_SP: 2964b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2965b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV: 2966b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV_X: 2967b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2968c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 2969b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2970b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Ops that match a minimum of one character (one or two 16 bit code units.) 2971c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 2972b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR: 2973b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STATIC_SETREF: 2974b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STAT_SETREF_N: 2975b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_SETREF: 2976b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_D: 2977b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR_I: 2978b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_X: // Grahpeme Cluster. Minimum is 1, max unbounded. 2979b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOTANY_ALL: // . matches one or two. 2980b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOTANY: 2981c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOTANY_UNIX: 2982b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 2983b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 2984b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2985b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2986b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMPX: 2987b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; // URX_JMPX has an extra operand, ignored here, 2988b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // otherwise processed identically to URX_JMP. 2989b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP: 2990b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 2991b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 2992b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest < loc) { 2993b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Loop of some kind. Can safely ignore, the worst that will happen 2994b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // is that we understate the true minimum length 2995b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc+1); 2996b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 2997b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Forward jump. Propagate the current min length to the target loc of the jump. 2998b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(jmpDest <= end+1); 2999b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(jmpDest) > currentLen) { 3000b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 3001b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3002b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3003b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3004b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3005b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3006c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_BACKTRACK: 3007b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3008c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Back-tracks are kind of like a branch, except that the min length was 3009b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // propagated already, by the state save. 3010b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc+1); 3011b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3012b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3013b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3014b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3015b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STATE_SAVE: 3016b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3017b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // State Save, for forward jumps, propagate the current minimum. 3018b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the state save. 3019b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 3020b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest > loc) { 3021b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen < forwardedLength.elementAti(jmpDest)) { 3022b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 3023b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3024c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3025b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3026b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3027c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3028b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3029b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING: 3030b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_I: 3031b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3032b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; 3033b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLenOp = fRXPat->fCompiledPat->elementAti(loc); 3034b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen += URX_VAL(stringLenOp); 3035b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3036b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3037b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3038b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3039b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT: 3040b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT_NG: 3041b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3042c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Loop Init Ops. 3043b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If the min loop count == 0 3044b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // move loc forwards to the end of the loop, skipping over the body. 3045c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // If the min count is > 0, 3046b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // continue normal processing of the body of the loop. 3047b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loopEndLoc = fRXPat->fCompiledPat->elementAti(loc+1); 3048b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loopEndLoc = URX_VAL(loopEndLoc); 3049b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t minLoopCount = fRXPat->fCompiledPat->elementAti(loc+2); 3050b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (minLoopCount == 0) { 3051b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc = loopEndLoc; 3052b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 3053b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc+=3; // Skips over operands of CTR_INIT 3054b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3055b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3056b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3057b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3058b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3059b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP: 3060b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP_NG: 3061c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Loop ops. 3062b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The jump is conditional, backwards only. 3063b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3064c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3065b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_SR_I: 3066b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_DOT_I: 3067b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_C: 3068b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // More loop ops. These state-save to themselves. 3069b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // don't change the minimum match - could match nothing at all. 3070b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3071c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3072b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3073b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_START: 3074b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_START: 3075b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3076b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Look-around. Scan forward until the matching look-ahead end, 3077c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // without processing the look-around block. This is overly pessimistic for look-ahead, 3078c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // it assumes that the look-ahead match might be zero-length. 3079b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // TODO: Positive lookahead could recursively do the block, then continue 3080c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // with the longer of the block or the value coming in. Ticket 6060 3081c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t depth = (opType == URX_LA_START? 2: 1);; 3082b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 3083b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; 3084b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->elementAti(loc); 3085c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (URX_TYPE(op) == URX_LA_START) { 3086c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The boilerplate for look-ahead includes two LA_END insturctions, 3087c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Depth will be decremented by each one when it is seen. 3088c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru depth += 2; 3089c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3090c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (URX_TYPE(op) == URX_LB_START) { 3091b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru depth++; 3092b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3093c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (URX_TYPE(op) == URX_LA_END) { 3094c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru depth--; 3095b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (depth == 0) { 3096b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3097b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3098c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3099c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (URX_TYPE(op)==URX_LBN_END) { 3100b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru depth--; 3101c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (depth == 0) { 3102c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 3103c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3104b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3105b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(op) == URX_STATE_SAVE) { 3106b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Need this because neg lookahead blocks will FAIL to outside 3107b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the block. 3108b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 3109b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest > loc) { 3110b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen < forwardedLength.elementAti(jmpDest)) { 3111b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 3112b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3113b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3114b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3115c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(loc <= end); 3116b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3117b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3118b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3119c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3120b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_END: 3121b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_CONT: 3122b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_END: 3123b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_CONT: 3124b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_END: 3125b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Only come here if the matching URX_LA_START or URX_LB_START was not in the 3126b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // range being sized, which happens when measuring size of look-behind blocks. 3127b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3128c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3129b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru default: 3130b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(FALSE); 3131b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3132c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3133b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3134b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3135b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We have finished walking through the ops. Check whether some forward jump 3136b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // propagated a shorter length to location end+1. 3137b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(end+1) < currentLen) { 3138b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(end+1); 3139b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(currentLen>=0 && currentLen < INT32_MAX); 3140b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3141c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3142b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return currentLen; 3143b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 3144b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3145b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3146b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3147b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3148b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3149b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// maxMatchLength Calculate the length of the longest string that could 3150c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// match the specified pattern. 3151b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Length is in 16 bit code units, not code points. 3152b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3153b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// The calculated length may not be exact. The returned 3154b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// value may be longer than the actual maximum; it must 3155b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// never be shorter. 3156b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3157b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3158b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruint32_t RegexCompile::maxMatchLength(int32_t start, int32_t end) { 3159b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 3160b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return 0; 3161b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3162b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(start <= end); 3163b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(end < fRXPat->fCompiledPat->size()); 3164b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3165b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3166b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loc; 3167b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op; 3168b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType; 3169b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t currentLen = 0; 3170b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UVector32 forwardedLength(end+1, *fStatus); 3171b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setSize(end+1); 3172b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3173b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc=start; loc<=end; loc++) { 3174b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(0, loc); 3175b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3176b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3177b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc = start; loc<=end; loc++) { 3178b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->elementAti(loc); 3179b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru opType = URX_TYPE(op); 3180b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3181b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The loop is advancing linearly through the pattern. 3182b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If the op we are now at was the destination of a branch in the pattern, 3183b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // and that path has a longer maximum length than the current accumulated value, 3184b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // replace the current accumulated value. 3185b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(loc) > currentLen) { 3186b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc); 3187b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3188b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3189b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch (opType) { 3190b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Ops that don't change the total length matched 3191b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RESERVED_OP: 3192b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END: 3193b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_LEN: 3194b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_NOP: 3195b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_START_CAPTURE: 3196b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END_CAPTURE: 3197b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_B: 3198b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_BU: 3199b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_G: 3200b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_Z: 3201b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET: 3202b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOLLAR: 3203c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_M: 3204c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_D: 3205c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_MD: 3206b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RELOC_OPRND: 3207b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_INP_LOC: 3208b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET_M: 3209c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_CARET_M_UNIX: 3210b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3211b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_SP: // Setup for atomic or possessive blocks. Doesn't change what can match. 3212b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LD_SP: 3213b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3214b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_END: 3215b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_CONT: 3216b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_CONT: 3217b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_END: 3218b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3219c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3220b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3221b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Ops that increase that cause an unbounded increase in the length 3222b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of a matched string, or that increase it a hard to characterize way. 3223b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Call the max length unbounded, and stop further checking. 3224b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF: // BackRef. Must assume that it might be a zero length match 3225b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF_I: 3226b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_X: // Grahpeme Cluster. Minimum is 1, max unbounded. 3227b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = INT32_MAX; 3228b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3229b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3230b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3231b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Ops that match a max of one character (possibly two 16 bit code units.) 3232c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3233b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STATIC_SETREF: 3234b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STAT_SETREF_N: 3235b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_SETREF: 3236b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_D: 3237b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR_I: 3238c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOTANY_ALL: 3239b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOTANY: 3240c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOTANY_UNIX: 3241b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen+=2; 3242b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3243b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3244b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Single literal character. Increase current max length by one or two, 3245b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // depending on whether the char is in the supplementary range. 3246b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR: 3247b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 3248b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_VAL(op) > 0x10000) { 3249b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen++; 3250b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3251b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3252b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3253c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Jumps. 3254b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3255b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP: 3256b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMPX: 3257b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV: 3258b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV_X: 3259b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3260b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 3261b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest < loc) { 3262b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Loop of some kind. Max match length is unbounded. 3263b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = INT32_MAX; 3264b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 3265b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Forward jump. Propagate the current min length to the target loc of the jump. 3266b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (forwardedLength.elementAti(jmpDest) < currentLen) { 3267b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 3268b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3269b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = 0; 3270b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3271b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3272b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3273b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3274c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_BACKTRACK: 3275c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // back-tracks are kind of like a branch, except that the max length was 3276b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // propagated already, by the state save. 3277b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = forwardedLength.elementAti(loc+1); 3278b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3279b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3280b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3281b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STATE_SAVE: 3282b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3283b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // State Save, for forward jumps, propagate the current minimum. 3284b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // of the state save. 3285b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // For backwards jumps, they create a loop, maximum 3286b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // match length is unbounded. 3287b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t jmpDest = URX_VAL(op); 3288b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (jmpDest > loc) { 3289b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen > forwardedLength.elementAti(jmpDest)) { 3290b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru forwardedLength.setElementAt(currentLen, jmpDest); 3291b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3292b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } else { 3293b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = INT32_MAX; 3294b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3295b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3296b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3297c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3298b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3299b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3300b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3301b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING: 3302b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_I: 3303b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3304b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; 3305b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t stringLenOp = fRXPat->fCompiledPat->elementAti(loc); 3306b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen += URX_VAL(stringLenOp); 3307b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3308b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3309b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3310b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3311b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT: 3312b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT_NG: 3313b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP: 3314b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP_NG: 3315b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_SR_I: 3316b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_DOT_I: 3317b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_C: 3318b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // For anything to do with loops, make the match length unbounded. 3319b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Note: INIT instructions are multi-word. Can ignore because 3320b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // INT32_MAX length will stop the per-instruction loop. 3321b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru currentLen = INT32_MAX; 3322b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3323c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3324c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3325b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3326b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_START: 3327b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_END: 3328b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Look-ahead. Just ignore, treat the look-ahead block as if 3329b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // it were normal pattern. Gives a too-long match length, 3330b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // but good enough for now. 3331b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3332c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3333b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // End of look-ahead ops should always be consumed by the processing at 3334b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the URX_LA_START op. 3335b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // U_ASSERT(FALSE); 3336b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // break; 3337c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3338b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_START: 3339b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3340b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Look-behind. Scan forward until the matching look-around end, 3341c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // without processing the look-behind block. 3342b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t depth = 0; 3343b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 3344b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru loc++; 3345b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = fRXPat->fCompiledPat->elementAti(loc); 3346b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(op) == URX_LA_START || URX_TYPE(op) == URX_LB_START) { 3347b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru depth++; 3348b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3349b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(op) == URX_LA_END || URX_TYPE(op)==URX_LBN_END) { 3350b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (depth == 0) { 3351b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3352b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3353b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru depth--; 3354b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3355c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(loc < end); 3356b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3357b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3358b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3359b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3360b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru default: 3361b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(FALSE); 3362b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3363b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3364c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3365b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (currentLen == INT32_MAX) { 3366b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The maximum length is unbounded. 3367b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Stop further processing of the pattern. 3368b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3369b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3370c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3371b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3372b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return currentLen; 3373c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3374b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 3375b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3376b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3377b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3378b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3379b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// stripNOPs Remove any NOP operations from the compiled pattern code. 3380b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Extra NOPs are inserted for some constructs during the initial 3381b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// code generation to provide locations that may be patched later. 3382b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Many end up unneeded, and are removed by this function. 3383b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3384b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3385b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::stripNOPs() { 3386b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3387b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 3388b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 3389b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3390b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3391b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t end = fRXPat->fCompiledPat->size(); 3392b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UVector32 deltas(end, *fStatus); 3393b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3394b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Make a first pass over the code, computing the amount that things 3395b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // will be offset at each location in the original code. 3396b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t loc; 3397b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t d = 0; 3398b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (loc=0; loc<end; loc++) { 3399b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru deltas.addElement(d, *fStatus); 3400b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = fRXPat->fCompiledPat->elementAti(loc); 3401b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (URX_TYPE(op) == URX_NOP) { 3402b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru d++; 3403b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3404b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3405b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3406b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Make a second pass over the code, removing the NOPs by moving following 3407b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // code up, and patching operands that refer to code locations that 3408b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // are being moved. The array of offsets from the first step is used 3409b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // to compute the new operand values. 3410b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t src; 3411b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t dst = 0; 3412b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (src=0; src<end; src++) { 3413b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t op = fRXPat->fCompiledPat->elementAti(src); 3414b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t opType = URX_TYPE(op); 3415b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru switch (opType) { 3416b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_NOP: 3417b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3418b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3419b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STATE_SAVE: 3420b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP: 3421b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP: 3422b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_LOOP_NG: 3423b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RELOC_OPRND: 3424b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMPX: 3425b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV: 3426b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_JMP_SAV_X: 3427b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // These are instructions with operands that refer to code locations. 3428b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3429b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t operandAddress = URX_VAL(op); 3430b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(operandAddress>=0 && operandAddress<deltas.size()); 3431b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru int32_t fixedOperandAddress = operandAddress - deltas.elementAti(operandAddress); 3432b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru op = URX_BUILD(opType, fixedOperandAddress); 3433b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, dst); 3434b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru dst++; 3435b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3436b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3437b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3438b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RESERVED_OP: 3439b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_RESERVED_OP_N: 3440b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKTRACK: 3441b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END: 3442b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR: 3443b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING: 3444b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_LEN: 3445b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_START_CAPTURE: 3446b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_END_CAPTURE: 3447b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STATIC_SETREF: 3448b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STAT_SETREF_N: 3449b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_SETREF: 3450b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOTANY: 3451b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_FAIL: 3452b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_B: 3453b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_BU: 3454b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_G: 3455b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_X: 3456b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_Z: 3457b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOTANY_ALL: 3458b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKSLASH_D: 3459b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET: 3460b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOLLAR: 3461b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT: 3462b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CTR_INIT_NG: 3463c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOTANY_UNIX: 3464b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_SP: 3465b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LD_SP: 3466b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF: 3467b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STO_INP_LOC: 3468b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_START: 3469b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LA_END: 3470b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_ONECHAR_I: 3471b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_STRING_I: 3472b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_BACKREF_I: 3473b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_DOLLAR_M: 3474b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_CARET_M: 3475c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_CARET_M_UNIX: 3476b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_START: 3477b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_CONT: 3478b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LB_END: 3479b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_CONT: 3480b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LBN_END: 3481b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_SR_I: 3482b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_DOT_I: 3483b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru case URX_LOOP_C: 3484c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_D: 3485c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case URX_DOLLAR_MD: 3486b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // These instructions are unaltered by the relocation. 3487b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setElementAt(op, dst); 3488b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru dst++; 3489b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3490b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3491b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru default: 3492b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Some op is unaccounted for. 3493b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru U_ASSERT(FALSE); 3494b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_INTERNAL_ERROR); 3495b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3496b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3497b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3498b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fCompiledPat->setSize(dst); 3499b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 3500b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3501b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3502b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3503b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3504b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3505b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3506b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Error Report a rule parse error. 3507b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Only report it if no previous error has been recorded. 3508b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3509b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3510b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::error(UErrorCode e) { 3511b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_SUCCESS(*fStatus)) { 3512b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru *fStatus = e; 3513b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParseErr->line = fLineNum; 3514b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParseErr->offset = fCharNum; 3515b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3516b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Fill in the context. 3517b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Note: extractBetween() pins supplied indicies to the string bounds. 3518b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru uprv_memset(fParseErr->preContext, 0, sizeof(fParseErr->preContext)); 3519b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru uprv_memset(fParseErr->postContext, 0, sizeof(fParseErr->postContext)); 3520b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fPattern.extractBetween(fScanIndex-U_PARSE_CONTEXT_LEN+1, fScanIndex, 3521b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParseErr->preContext, 0); 3522b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fRXPat->fPattern.extractBetween(fScanIndex, fScanIndex+U_PARSE_CONTEXT_LEN-1, 3523b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fParseErr->postContext, 0); 3524b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3525b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 3526b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3527b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3528b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3529b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Assorted Unicode character constants. 3530b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Numeric because there is no portable way to enter them as literals. 3531b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// (Think EBCDIC). 3532b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3533b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Querustatic const UChar chCR = 0x0d; // New lines, for terminating comments. 3534c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chLF = 0x0a; // Line Feed 3535b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Querustatic const UChar chPound = 0x23; // '#', introduces a comment. 3536c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chDigit0 = 0x30; // '0' 3537c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chDigit7 = 0x37; // '9' 3538c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chColon = 0x3A; // ':' 3539b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Querustatic const UChar chE = 0x45; // 'E' 3540c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chQ = 0x51; // 'Q' 3541c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chN = 0x4E; // 'N' 3542c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chP = 0x50; // 'P' 3543b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Querustatic const UChar chBackSlash = 0x5c; // '\' introduces a char escape 3544c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chLBracket = 0x5b; // '[' 3545c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chRBracket = 0x5d; // ']' 3546c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chUp = 0x5e; // '^' 3547c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chLowerP = 0x70; 3548c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chLBrace = 0x7b; // '{' 3549c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chRBrace = 0x7d; // '}' 3550c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chNEL = 0x85; // NEL newline variant 3551c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar chLS = 0x2028; // Unicode Line Separator 3552b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3553b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3554b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3555b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3556b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// nextCharLL Low Level Next Char from the regex pattern. 3557b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Get a char from the string, keep track of input position 3558b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// for error reporting. 3559b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3560b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3561b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruUChar32 RegexCompile::nextCharLL() { 3562b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UChar32 ch; 3563b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UnicodeString &pattern = fRXPat->fPattern; 3564b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3565b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fPeekChar != -1) { 3566b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru ch = fPeekChar; 3567b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fPeekChar = -1; 3568b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return ch; 3569b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3570b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fPatternLength==0 || fNextIndex >= fPatternLength) { 3571b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return (UChar32)-1; 3572b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3573b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru ch = pattern.char32At(fNextIndex); 3574b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fNextIndex = pattern.moveIndex32(fNextIndex, 1); 3575b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3576b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (ch == chCR || 3577b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru ch == chNEL || 3578b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru ch == chLS || 3579b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru ch == chLF && fLastChar != chCR) { 3580b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Character is starting a new line. Bump up the line number, and 3581b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // reset the column to 0. 3582b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fLineNum++; 3583b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fCharNum=0; 3584b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3585b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru else { 3586b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Character is not starting a new line. Except in the case of a 3587b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // LF following a CR, increment the column position. 3588b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (ch != chLF) { 3589b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fCharNum++; 3590b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3591b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3592b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fLastChar = ch; 3593b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return ch; 3594b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 3595b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3596b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3597b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3598b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// peekCharLL Low Level Character Scanning, sneak a peek at the next 3599b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// character without actually getting it. 3600b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3601b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3602b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruUChar32 RegexCompile::peekCharLL() { 3603b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fPeekChar == -1) { 3604b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fPeekChar = nextCharLL(); 3605b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3606b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return fPeekChar; 3607b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 3608b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3609b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3610b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3611b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3612b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// nextChar for pattern scanning. At this level, we handle stripping 3613b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// out comments and processing some backslash character escapes. 3614b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// The rest of the pattern grammar is handled at the next level up. 3615b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3616b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3617b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queruvoid RegexCompile::nextChar(RegexPatternChar &c) { 3618b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3619b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fScanIndex = fNextIndex; 3620b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar = nextCharLL(); 3621b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fQuoted = FALSE; 3622b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3623b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fQuoteMode) { 3624b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fQuoted = TRUE; 3625b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if ((c.fChar==chBackSlash && peekCharLL()==chE) || c.fChar == (UChar32)-1) { 3626b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fQuoteMode = FALSE; // Exit quote mode, 3627b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru nextCharLL(); // discard the E 3628b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru nextChar(c); // recurse to get the real next char 3629b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3630b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3631b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru else if (fInBackslashQuote) { 3632b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // The current character immediately follows a '\' 3633b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Don't check for any further escapes, just return it as-is. 3634b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Don't set c.fQuoted, because that would prevent the state machine from 3635b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // dispatching on the character. 3636b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fInBackslashQuote = FALSE; 3637b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3638b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru else 3639b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3640b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We are not in a \Q quoted region \E of the source. 3641b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3642b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fModeFlags & UREGEX_COMMENTS) { 3643b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3644b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We are in free-spacing and comments mode. 3645c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Scan through any white space and comments, until we 3646b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // reach a significant character or the end of inut. 3647b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 3648b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (c.fChar == (UChar32)-1) { 3649b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; // End of Input 3650b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3651b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (c.fChar == chPound && fEOLComments == TRUE) { 3652b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Start of a comment. Consume the rest of it, until EOF or a new line 3653b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 3654b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar = nextCharLL(); 3655b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (c.fChar == (UChar32)-1 || // EOF 3656b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar == chCR || 3657b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar == chLF || 3658b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar == chNEL || 3659b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar == chLS) { 3660b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3661b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3662b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3663b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3664c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // TODO: check what Java & Perl do with non-ASCII white spaces. Ticket 6061. 3665b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (uprv_isRuleWhiteSpace(c.fChar) == FALSE) { 3666b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3667b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3668b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar = nextCharLL(); 3669b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3670b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3671b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3672b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3673b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // check for backslash escaped characters. 3674b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3675b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (c.fChar == chBackSlash) { 3676c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t startX = fNextIndex; // start and end positions of the 3677c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t endX = fNextIndex; // sequence following the '\' 3678b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (RegexStaticSets::gStaticSets->fUnescapeCharSet.contains(peekCharLL())) { 3679b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3680b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // A '\' sequence that is handled by ICU's standard unescapeAt function. 3681b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Includes \uxxxx, \n, \r, many others. 3682b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Return the single equivalent character. 3683b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // 3684b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru nextCharLL(); // get & discard the peeked char. 3685b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fQuoted = TRUE; 3686b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru c.fChar = fRXPat->fPattern.unescapeAt(endX); 3687b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (startX == endX) { 3688b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_BAD_ESCAPE_SEQUENCE); 3689b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3690b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fCharNum += endX - startX; 3691b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fNextIndex = endX; 3692b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3693c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (peekCharLL() == chDigit0) { 3694c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Octal Escape, using Java Regexp Conventions 3695c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // which are \0 followed by 1-3 octal digits. 3696c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Different from ICU Unescape handling of Octal, which does not 3697c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // require the leading 0. 3698c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Java also has the convention of only consuning 2 octal digits if 3699c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // the three digit number would be > 0xff 3700c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3701c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru c.fChar = 0; 3702c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextCharLL(); // Consume the initial 0. 3703c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int index; 3704c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru for (index=0; index<3; index++) { 3705c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t ch = peekCharLL(); 3706c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (ch<chDigit0 || ch>chDigit7) { 3707c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (index==0) { 3708c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // \0 is not followed by any octal digits. 3709c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_BAD_ESCAPE_SEQUENCE); 3710c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3711c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 3712c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3713c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru c.fChar <<= 3; 3714c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru c.fChar += ch&7; 3715c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (c.fChar <= 255) { 3716c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextCharLL(); 3717c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else { 3718c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The last digit made the number too big. Forget we saw it. 3719c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru c.fChar >>= 3; 3720c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3721c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3722c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru c.fQuoted = TRUE; 3723c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3724c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (peekCharLL() == chQ) { 3725c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // "\Q" enter quote mode, which will continue until "\E" 3726c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fQuoteMode = TRUE; 3727c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextCharLL(); // discard the 'Q'. 3728c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(c); // recurse to get the real next char. 3729c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3730b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru else 3731b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru { 3732b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // We are in a '\' escape that will be handled by the state table scanner. 3733b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Just return the backslash, but remember that the following char is to 3734c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // be taken literally. 3735b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fInBackslashQuote = TRUE; 3736b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3737b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3738b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3739b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3740b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // re-enable # to end-of-line comments, in case they were disabled. 3741b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // They are disabled by the parser upon seeing '(?', but this lasts for 3742b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the fetching of the next character only. 3743b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru fEOLComments = TRUE; 3744b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3745b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // putc(c.fChar, stdout); 3746b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 3747b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3748b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3749b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3750b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3751b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3752c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// scanNamedChar 3753c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Get a UChar32 from a \N{UNICODE CHARACTER NAME} in the pattern. 3754c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3755c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// The scan position will be at the 'N'. On return 3756c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// the scan position should be just after the '}' 3757b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3758c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// Return the UChar32 3759b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3760b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3761c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste QueruUChar32 RegexCompile::scanNamedChar() { 3762b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 3763c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return 0; 3764b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3765b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3766c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3767c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fChar != chLBrace) { 3768c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_PROPERTY_SYNTAX); 3769c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return 0; 3770b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3771c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3772c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeString charName; 3773b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 3774c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3775c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fChar == chRBrace) { 3776b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3777b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3778c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fChar == -1) { 3779c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_PROPERTY_SYNTAX); 3780c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return 0; 3781c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3782c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru charName.append(fC.fChar); 3783b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3784c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3785c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru char name[100]; 3786c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (!uprv_isInvariantUString(charName.getBuffer(), charName.length()) || 3787c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru (uint32_t)charName.length()>=sizeof(name)) { 3788c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // All Unicode character names have only invariant characters. 3789c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The API to get a character, given a name, accepts only char *, forcing us to convert, 3790c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // which requires this error check 3791c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_PROPERTY_SYNTAX); 3792c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return 0; 3793c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3794c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru charName.extract(0, charName.length(), name, sizeof(name), US_INV); 3795b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3796c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UChar32 theChar = u_charFromName(U_UNICODE_CHAR_NAME, name, fStatus); 3797c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 3798c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_PROPERTY_SYNTAX); 3799c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3800b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3801c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); // Continue overall regex pattern processing with char after the '}' 3802c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return theChar; 3803c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru} 3804b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3805b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3806b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3807b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// scanProp Construct a UnicodeSet from the text at the current scan 3808b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// position, which will be of the form \p{whaterver} 3809b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3810b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// The scan position will be at the 'p' or 'P'. On return 3811b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// the scan position should be just after the '}' 3812b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3813b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// Return a UnicodeSet, constructed from the \P pattern, 3814b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// or NULL if the pattern is invalid. 3815b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru// 3816b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru//------------------------------------------------------------------------------ 3817b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruUnicodeSet *RegexCompile::scanProp() { 3818b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru UnicodeSet *uset = NULL; 3819b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3820b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 3821b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return NULL; 3822b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3823c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(fC.fChar == chLowerP || fC.fChar == chP); 3824c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UBool negated = (fC.fChar == chP); 3825b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3826c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeString propertyName; 3827c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3828c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fChar != chLBrace) { 3829c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(U_REGEX_PROPERTY_SYNTAX); 3830c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return NULL; 3831c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3832b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (;;) { 3833c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3834b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fC.fChar == chRBrace) { 3835b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru break; 3836b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3837b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fC.fChar == -1) { 3838b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Hit the end of the input string without finding the closing '}' 3839b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru error(U_REGEX_PROPERTY_SYNTAX); 3840b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return NULL; 3841b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3842c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru propertyName.append(fC.fChar); 3843c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3844c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru uset = createSetForProperty(propertyName, negated); 3845c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); // Move input scan to position following the closing '}' 3846c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return uset; 3847c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru} 3848c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3849c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru//------------------------------------------------------------------------------ 3850c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3851c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// scanPosixProp Construct a UnicodeSet from the text at the current scan 3852c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// position, which is expected be of the form [:property expression:] 3853c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3854c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// The scan position will be at the opening ':'. On return 3855c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// the scan position must be on the closing ']' 3856c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3857c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// Return a UnicodeSet constructed from the pattern, 3858c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// or NULL if this is not a valid POSIX-style set expression. 3859c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// If not a property expression, restore the initial scan position 3860c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// (to the opening ':') 3861c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3862c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// Note: the opening '[:' is not sufficient to guarantee that 3863c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// this is a [:property:] expression. 3864c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// [:'+=,] is a perfectly good ordinary set expression that 3865c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// happens to include ':' as one of its characters. 3866c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3867c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru//------------------------------------------------------------------------------ 3868c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste QueruUnicodeSet *RegexCompile::scanPosixProp() { 3869c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *uset = NULL; 3870c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3871c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 3872c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return NULL; 3873b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3874b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3875c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(fC.fChar == chColon); 3876c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3877c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Save the scanner state. 3878c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // TODO: move this into the scanner, with the state encapsulated in some way. Ticket 6062 3879c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t savedScanIndex = fScanIndex; 3880c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t savedNextIndex = fNextIndex; 3881c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UBool savedQuoteMode = fQuoteMode; 3882c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UBool savedInBackslashQuote = fInBackslashQuote; 3883c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UBool savedEOLComments = fEOLComments; 3884c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t savedLineNum = fLineNum; 3885c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t savedCharNum = fCharNum; 3886c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UChar32 savedLastChar = fLastChar; 3887c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UChar32 savedPeekChar = fPeekChar; 3888c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru RegexPatternChar savedfC = fC; 3889c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3890c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Scan for a closing ]. A little tricky because there are some perverse 3891c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // edge cases possible. "[:abc\Qdef:] \E]" is a valid non-property expression, 3892c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // ending on the second closing ]. 3893c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3894c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeString propName; 3895c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UBool negated = FALSE; 3896c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3897c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Check for and consume the '^' in a negated POSIX property, e.g. [:^Letter:] 3898c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3899c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fChar == chUp) { 3900c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru negated = TRUE; 3901c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3902c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3903c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3904c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Scan for the closing ":]", collecting the property name along the way. 3905c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UBool sawPropSetTerminator = FALSE; 3906c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru for (;;) { 3907c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru propName.append(fC.fChar); 3908c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3909c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fQuoted || fC.fChar == -1) { 3910c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Escaped characters or end of input - either says this isn't a [:Property:] 3911c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 3912c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3913c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fChar == chColon) { 3914c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru nextChar(fC); 3915c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (fC.fChar == chRBracket) { 3916c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru sawPropSetTerminator = TRUE; 3917c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3918c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 3919c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3920c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3921c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3922c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (sawPropSetTerminator) { 3923c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru uset = createSetForProperty(propName, negated); 3924c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3925c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else 3926c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 3927c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // No closing ":]". 3928c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Restore the original scan position. 3929c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The main scanner will retry the input as a normal set expression, 3930c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // not a [:Property:] expression. 3931c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fScanIndex = savedScanIndex; 3932c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fNextIndex = savedNextIndex; 3933c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fQuoteMode = savedQuoteMode; 3934c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fInBackslashQuote = savedInBackslashQuote; 3935c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fEOLComments = savedEOLComments; 3936c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fLineNum = savedLineNum; 3937c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fCharNum = savedCharNum; 3938c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fLastChar = savedLastChar; 3939c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fPeekChar = savedPeekChar; 3940c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fC = savedfC; 3941c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3942c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return uset; 3943c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru} 3944c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3945c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic inline void addIdentifierIgnorable(UnicodeSet *set, UErrorCode& ec) { 3946c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(0, 8).add(0x0e, 0x1b).add(0x7f, 0x9f); 3947c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_CF_MASK, ec); 3948c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru} 3949c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3950c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3951c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// Create a Unicode Set from a Unicode Property expression. 3952c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// This is common code underlying both \p{...} ane [:...:] expressions. 3953c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// Includes trying the Java "properties" that aren't supported as 3954c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// normal ICU UnicodeSet properties 3955c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 3956c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar posSetPrefix[] = {0x5b, 0x5c, 0x70, 0x7b, 0}; // "[\p{" 3957c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Querustatic const UChar negSetPrefix[] = {0x5b, 0x5c, 0x50, 0x7b, 0}; // "[\P{" 3958c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste QueruUnicodeSet *RegexCompile::createSetForProperty(const UnicodeString &propName, UBool negated) { 3959c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeString setExpr; 3960c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *set; 3961c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru uint32_t usetFlags = 0; 3962c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3963c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_FAILURE(*fStatus)) { 3964c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return NULL; 3965c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3966c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3967c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3968c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // First try the property as we received it 3969c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3970c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (negated) { 3971c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(negSetPrefix, -1); 3972c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } else { 3973c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(posSetPrefix, -1); 3974c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3975c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(propName); 3976c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(chRBrace); 3977c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(chRBracket); 3978b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (fModeFlags & UREGEX_CASE_INSENSITIVE) { 3979b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru usetFlags |= USET_CASE_INSENSITIVE; 3980b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 3981c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set = new UnicodeSet(setExpr, usetFlags, NULL, *fStatus); 3982c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_SUCCESS(*fStatus)) { 3983c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return set; 3984c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 3985c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete set; 3986c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set = NULL; 3987c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 3988c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3989c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // The property as it was didn't work. 3990c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Do emergency fixes - 3991c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // InGreek -> InGreek or Coptic, that being the official Unicode name for that block. 3992c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // InCombiningMarksforSymbols -> InCombiningDiacriticalMarksforSymbols. 3993c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 3994c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Note on Spaces: either "InCombiningMarksForSymbols" or "InCombining Marks for Symbols" 3995c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // is accepted by Java. The property part of the name is compared 3996c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // case-insenstively. The spaces must be exactly as shown, either 3997c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // all there, or all omitted, with exactly one at each position 3998c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // if they are present. From checking against JDK 1.6 3999c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 4000c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // This code should be removed when ICU properties support the Java compatibility names 4001c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // (ICU 4.0?) 4002c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 4003c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeString mPropName = propName; 4004c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (mPropName.caseCompare(UNICODE_STRING_SIMPLE("InGreek"), 0) == 0) { 4005c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru mPropName = UNICODE_STRING_SIMPLE("InGreek and Coptic"); 4006c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4007c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (mPropName.caseCompare(UNICODE_STRING_SIMPLE("InCombining Marks for Symbols"), 0) == 0 || 4008c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru mPropName.caseCompare(UNICODE_STRING_SIMPLE("InCombiningMarksforSymbols"), 0) == 0) { 4009c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru mPropName = UNICODE_STRING_SIMPLE("InCombining Diacritical Marks for Symbols"); 4010c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4011c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("all")) == 0) { 4012c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru mPropName = UNICODE_STRING_SIMPLE("javaValidCodePoint"); 4013c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4014c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 4015c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // See if the property looks like a Java "InBlockName", which 4016c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // we will recast as "Block=BlockName" 4017c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 4018c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru static const UChar IN[] = {0x49, 0x6E, 0}; // "In" 4019c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru static const UChar BLOCK[] = {0x42, 0x6C, 0x6f, 0x63, 0x6b, 0x3d, 00}; // "Block=" 4020c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (mPropName.startsWith(IN, 2) && propName.length()>=3) { 4021c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.truncate(4); // Leaves "[\p{", or "[\P{" 4022c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(BLOCK, -1); 4023c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(UnicodeString(mPropName, 2)); // Property with the leading "In" removed. 4024c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(chRBrace); 4025c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setExpr.append(chRBracket); 4026c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru *fStatus = U_ZERO_ERROR; 4027c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set = new UnicodeSet(setExpr, usetFlags, NULL, *fStatus); 4028c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_SUCCESS(*fStatus)) { 4029c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return set; 4030c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4031c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete set; 4032c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set = NULL; 4033b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 4034b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 4035c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (propName.startsWith(UNICODE_STRING_SIMPLE("java")) || 4036c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru propName.compare(UNICODE_STRING_SIMPLE("all")) == 0) 4037c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru { 4038c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UErrorCode localStatus = U_ZERO_ERROR; 4039c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru //setExpr.remove(); 4040c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set = new UnicodeSet(); 4041c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 4042c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // Try the various Java specific properties. 4043c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // These all begin with "java" 4044c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // 4045c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (mPropName.compare(UNICODE_STRING_SIMPLE("javaDefined")) == 0) { 4046c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_CN_MASK, localStatus); 4047c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->complement(); 4048c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4049c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaDigit")) == 0) { 4050c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_ND_MASK, localStatus); 4051c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4052c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaIdentifierIgnorable")) == 0) { 4053c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addIdentifierIgnorable(set, localStatus); 4054c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4055c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaISOControl")) == 0) { 4056c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(0, 0x1F).add(0x7F, 0x9F); 4057c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4058c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaJavaIdentifierPart")) == 0) { 4059c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_L_MASK, localStatus); 4060c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_SC_MASK, localStatus); 4061c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_PC_MASK, localStatus); 4062c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_ND_MASK, localStatus); 4063c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_NL_MASK, localStatus); 4064c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_MC_MASK, localStatus); 4065c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_MN_MASK, localStatus); 4066c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addIdentifierIgnorable(set, localStatus); 4067c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4068c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaJavaIdentifierStart")) == 0) { 4069c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_L_MASK, localStatus); 4070c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_NL_MASK, localStatus); 4071c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_SC_MASK, localStatus); 4072c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_PC_MASK, localStatus); 4073c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4074c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaLetter")) == 0) { 4075c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_L_MASK, localStatus); 4076c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4077c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaLetterOrDigit")) == 0) { 4078c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_L_MASK, localStatus); 4079c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_ND_MASK, localStatus); 4080c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4081c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaLowerCase")) == 0) { 4082c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_LL_MASK, localStatus); 4083c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4084c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaMirrored")) == 0) { 4085c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->applyIntPropertyValue(UCHAR_BIDI_MIRRORED, 1, localStatus); 4086c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4087c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaSpaceChar")) == 0) { 4088c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_Z_MASK, localStatus); 4089c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4090c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaSupplementaryCodePoint")) == 0) { 4091c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(0x10000, UnicodeSet::MAX_VALUE); 4092c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4093c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaTitleCase")) == 0) { 4094c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_LT_MASK, localStatus); 4095c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4096c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaUnicodeIdentifierStart")) == 0) { 4097c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_L_MASK, localStatus); 4098c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_NL_MASK, localStatus); 4099c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4100c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaUnicodeIdentifierPart")) == 0) { 4101c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_L_MASK, localStatus); 4102c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_PC_MASK, localStatus); 4103c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_ND_MASK, localStatus); 4104c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_NL_MASK, localStatus); 4105c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_MC_MASK, localStatus); 4106c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_MN_MASK, localStatus); 4107c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addIdentifierIgnorable(set, localStatus); 4108c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4109c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaUpperCase")) == 0) { 4110c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_LU_MASK, localStatus); 4111c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4112c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaValidCodePoint")) == 0) { 4113c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(0, UnicodeSet::MAX_VALUE); 4114c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4115c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("javaWhitespace")) == 0) { 4116c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru addCategory(set, U_GC_Z_MASK, localStatus); 4117c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->removeAll(UnicodeSet().add(0xa0).add(0x2007).add(0x202f)); 4118c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(9, 0x0d).add(0x1c, 0x1f); 4119c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4120c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru else if (mPropName.compare(UNICODE_STRING_SIMPLE("all")) == 0) { 4121c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->add(0, UnicodeSet::MAX_VALUE); 4122c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4123c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 4124c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (U_SUCCESS(localStatus) && !set->isEmpty()) { 4125c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru *fStatus = U_ZERO_ERROR; 4126c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (usetFlags & USET_CASE_INSENSITIVE) { 4127c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->closeOver(USET_CASE_INSENSITIVE); 4128c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4129c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if (negated) { 4130c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set->complement(); 4131c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4132c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return set; 4133c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4134c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete set; 4135c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru set = NULL; 4136b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 4137c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru error(*fStatus); 4138c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru return NULL; 4139c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru} 4140b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 4141c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 4142c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 4143c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 4144c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// SetEval Part of the evaluation of [set expressions]. 4145c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// Perform any pending (stacked) operations with precedence 4146c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// equal or greater to that of the next operator encountered 4147c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// in the expression. 4148c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru// 4149c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queruvoid RegexCompile::setEval(int32_t nextOp) { 4150c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *rightOperand = NULL; 4151c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru UnicodeSet *leftOperand = NULL; 4152c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru for (;;) { 4153c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(fSetOpStack.empty()==FALSE); 4154c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru int32_t pendingSetOperation = fSetOpStack.peeki(); 4155c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru if ((pendingSetOperation&0xffff0000) < (nextOp&0xffff0000)) { 4156c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 4157c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4158c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.popi(); 4159c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(fSetStack.empty() == FALSE); 4160c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru rightOperand = (UnicodeSet *)fSetStack.peek(); 4161c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru switch (pendingSetOperation) { 4162c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case setNegation: 4163c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru rightOperand->complement(); 4164c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 4165c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case setCaseClose: 4166c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru // TODO: need a simple close function. Ticket 6065 4167c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru rightOperand->closeOver(USET_CASE_INSENSITIVE); 4168c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru rightOperand->removeAllStrings(); 4169c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 4170c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case setDifference1: 4171c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case setDifference2: 4172c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetStack.pop(); 4173c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru leftOperand = (UnicodeSet *)fSetStack.peek(); 4174c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru leftOperand->removeAll(*rightOperand); 4175c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete rightOperand; 4176c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 4177c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case setIntersection1: 4178c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case setIntersection2: 4179c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetStack.pop(); 4180c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru leftOperand = (UnicodeSet *)fSetStack.peek(); 4181c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru leftOperand->retainAll(*rightOperand); 4182c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete rightOperand; 4183c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 4184c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru case setUnion: 4185c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetStack.pop(); 4186c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru leftOperand = (UnicodeSet *)fSetStack.peek(); 4187c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru leftOperand->addAll(*rightOperand); 4188c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru delete rightOperand; 4189c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 4190c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru default: 4191c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru U_ASSERT(FALSE); 4192c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru break; 4193c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4194c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4195c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru } 4196c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru 4197c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queruvoid RegexCompile::setPushOp(int32_t op) { 4198c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru setEval(op); 4199c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetOpStack.push(op, *fStatus); 4200c69afcec261fc345fda8daf46f0ea6b4351dc777Jean-Baptiste Queru fSetStack.push(new UnicodeSet(), *fStatus); 4201b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 4202b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 4203b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruU_NAMESPACE_END 4204b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#endif // !UCONFIG_NO_REGULAR_EXPRESSIONS 4205b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 4206