PTHLexer.cpp revision 85b4521e34dcd4a0a4a1f0819e1123128e5a3125
1274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek//===--- PTHLexer.cpp - Lex from a token stream ---------------------------===// 2274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// 3274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// The LLVM Compiler Infrastructure 4274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// 5274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// This file is distributed under the University of Illinois Open Source 6274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// License. See LICENSE.TXT for details. 7274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// 8274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek//===----------------------------------------------------------------------===// 9274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// 10274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// This file implements the PTHLexer interface. 11274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek// 12274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek//===----------------------------------------------------------------------===// 13274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek 140c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek#include "clang/Basic/TokenKinds.h" 150c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek#include "clang/Basic/FileManager.h" 160c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek#include "clang/Basic/IdentifierTable.h" 179378ba44b3f46d697653003c784be87746e138d2Douglas Gregor#include "clang/Basic/OnDiskHashTable.h" 183574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar#include "clang/Lex/LexDiagnostic.h" 19274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek#include "clang/Lex/PTHLexer.h" 20274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek#include "clang/Lex/Preprocessor.h" 210c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek#include "clang/Lex/PTHManager.h" 220c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek#include "clang/Lex/Token.h" 230c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek#include "clang/Lex/Preprocessor.h" 240c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek#include "llvm/ADT/OwningPtr.h" 252596e429a61602312bdd149786045b8a90cd2d10Daniel Dunbar#include "llvm/ADT/StringExtras.h" 262596e429a61602312bdd149786045b8a90cd2d10Daniel Dunbar#include "llvm/ADT/StringMap.h" 276f78c3b8b9343e7e9fbf2d457cccf00df6da5d47Chris Lattner#include "llvm/Support/MemoryBuffer.h" 28337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek#include <sys/stat.h> 29274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenekusing namespace clang; 309378ba44b3f46d697653003c784be87746e138d2Douglas Gregorusing namespace clang::io; 31274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek 327b78b7c6d96deb1e63f8d0655ee6fa53de0b65efTed Kremenek#define DISK_TOKEN_SIZE (1+1+2+4+4) 33268ee7016a2811803989487c0ad3799486092c63Ted Kremenek 34e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek//===----------------------------------------------------------------------===// 35e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek// PTHLexer methods. 36e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek//===----------------------------------------------------------------------===// 37e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek 38da9d61c96c412f6babc7f824152609562f302388Chris LattnerPTHLexer::PTHLexer(Preprocessor &PP, FileID FID, const unsigned char *D, 39277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek const unsigned char *ppcond, PTHManager &PM) 402b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner : PreprocessorLexer(&PP, FID), TokBuf(D), CurPtr(D), LastHashTokPtr(0), 41277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek PPCond(ppcond), CurPPCondPtr(ppcond), PTHMgr(PM) { 421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 432b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner FileStartLoc = PP.getSourceManager().getLocForStartOfFile(FID); 445f074266cc59563036c40516c814d63825723e20Ted Kremenek} 45274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek 46e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenekvoid PTHLexer::Lex(Token& Tok) { 47e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted KremenekLexNextToken: 48866bdf74547efe32c320554837ffce00fcc084feTed Kremenek 49866bdf74547efe32c320554837ffce00fcc084feTed Kremenek //===--------------------------------------==// 50866bdf74547efe32c320554837ffce00fcc084feTed Kremenek // Read the raw token data. 51866bdf74547efe32c320554837ffce00fcc084feTed Kremenek //===--------------------------------------==// 521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 53866bdf74547efe32c320554837ffce00fcc084feTed Kremenek // Shadow CurPtr into an automatic variable. 541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const unsigned char *CurPtrShadow = CurPtr; 55866bdf74547efe32c320554837ffce00fcc084feTed Kremenek 561b5285e1ba31975864da356b2ed927e87670e654Chris Lattner // Read in the data for the token. 575ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner unsigned Word0 = ReadLE32(CurPtrShadow); 585ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner uint32_t IdentifierID = ReadLE32(CurPtrShadow); 595ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner uint32_t FileOffset = ReadLE32(CurPtrShadow); 601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 617b78b7c6d96deb1e63f8d0655ee6fa53de0b65efTed Kremenek tok::TokenKind TKind = (tok::TokenKind) (Word0 & 0xFF); 627b78b7c6d96deb1e63f8d0655ee6fa53de0b65efTed Kremenek Token::TokenFlags TFlags = (Token::TokenFlags) ((Word0 >> 8) & 0xFF); 63aff6ef8e7bc3c3739f984c390e0af693e60be064Chris Lattner uint32_t Len = Word0 >> 16; 647b78b7c6d96deb1e63f8d0655ee6fa53de0b65efTed Kremenek 65aff6ef8e7bc3c3739f984c390e0af693e60be064Chris Lattner CurPtr = CurPtrShadow; 661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 67866bdf74547efe32c320554837ffce00fcc084feTed Kremenek //===--------------------------------------==// 68866bdf74547efe32c320554837ffce00fcc084feTed Kremenek // Construct the token itself. 69866bdf74547efe32c320554837ffce00fcc084feTed Kremenek //===--------------------------------------==// 701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 71866bdf74547efe32c320554837ffce00fcc084feTed Kremenek Tok.startToken(); 72898a0bb1972efb6e03cb1151412ec7392cef07deChris Lattner Tok.setKind(TKind); 73898a0bb1972efb6e03cb1151412ec7392cef07deChris Lattner Tok.setFlag(TFlags); 7459d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek assert(!LexingRawMode); 752b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner Tok.setLocation(FileStartLoc.getFileLocWithOffset(FileOffset)); 76866bdf74547efe32c320554837ffce00fcc084feTed Kremenek Tok.setLength(Len); 7789d7ee9619d2dbdfa8d956a695c612a104a92cadTed Kremenek 78d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner // Handle identifiers. 79277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek if (Tok.isLiteral()) { 80277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek Tok.setLiteralData((const char*) (PTHMgr.SpellingBase + IdentifierID)); 81277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek } 82277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek else if (IdentifierID) { 83d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner MIOpt.ReadToken(); 84d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner IdentifierInfo *II = PTHMgr.GetIdentifierInfo(IdentifierID-1); 851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 86d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner Tok.setIdentifierInfo(II); 871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88863c486fcb6162495a94fddf7ac8409de2638995Chris Lattner // Change the kind of this identifier to the appropriate token kind, e.g. 89863c486fcb6162495a94fddf7ac8409de2638995Chris Lattner // turning "for" into a keyword. 90863c486fcb6162495a94fddf7ac8409de2638995Chris Lattner Tok.setKind(II->getTokenID()); 911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner if (II->isHandleIdentifierCase()) 93d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner PP->HandleIdentifier(Tok); 94d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner return; 95d0a69696acca62798dfc8b98f97c92bfa7fa0490Chris Lattner } 961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 97866bdf74547efe32c320554837ffce00fcc084feTed Kremenek //===--------------------------------------==// 98866bdf74547efe32c320554837ffce00fcc084feTed Kremenek // Process the token. 99866bdf74547efe32c320554837ffce00fcc084feTed Kremenek //===--------------------------------------==// 100898a0bb1972efb6e03cb1151412ec7392cef07deChris Lattner if (TKind == tok::eof) { 101e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek // Save the end-of-file token. 102e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek EofToken = Tok; 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 104cd4e2aecde5bb7810715d5d5a88ac63ce7946f34Ted Kremenek Preprocessor *PPCache = PP; 1051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10659d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek assert(!ParsingPreprocessorDirective); 10759d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek assert(!LexingRawMode); 1081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10959d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek // FIXME: Issue diagnostics similar to Lexer. 11059d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek if (PP->HandleEndOfFile(Tok, false)) 111d6f53dc4951aace69014619761760addac9e59ecTed Kremenek return; 1121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 113cd4e2aecde5bb7810715d5d5a88ac63ce7946f34Ted Kremenek assert(PPCache && "Raw buffer::LexEndOfFile should return a token"); 114cd4e2aecde5bb7810715d5d5a88ac63ce7946f34Ted Kremenek return PPCache->Lex(Tok); 115cd4e2aecde5bb7810715d5d5a88ac63ce7946f34Ted Kremenek } 1161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 117898a0bb1972efb6e03cb1151412ec7392cef07deChris Lattner if (TKind == tok::hash && Tok.isAtStartOfLine()) { 11859d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek LastHashTokPtr = CurPtr - DISK_TOKEN_SIZE; 11959d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek assert(!LexingRawMode); 12059d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek PP->HandleDirective(Tok); 1211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12259d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek if (PP->isCurrentLexer(this)) 12359d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek goto LexNextToken; 1241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12559d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek return PP->Lex(Tok); 126e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek } 1271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 128898a0bb1972efb6e03cb1151412ec7392cef07deChris Lattner if (TKind == tok::eom) { 12959d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek assert(ParsingPreprocessorDirective); 13059d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek ParsingPreprocessorDirective = false; 13159d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek return; 13259d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek } 133274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek 13459d08cb672136322375e5400578ee1fbd0947de2Ted Kremenek MIOpt.ReadToken(); 135cd4e2aecde5bb7810715d5d5a88ac63ce7946f34Ted Kremenek} 136cd4e2aecde5bb7810715d5d5a88ac63ce7946f34Ted Kremenek 137e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek// FIXME: We can just grab the last token instead of storing a copy 138e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek// into EofToken. 13959d08cb672136322375e5400578ee1fbd0947de2Ted Kremenekvoid PTHLexer::getEOF(Token& Tok) { 140defb7094c835998bb821e894253287625ce8c74dTed Kremenek assert(EofToken.is(tok::eof)); 1410c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek Tok = EofToken; 142274b20863a728cc6a31ee75c670e3733600c1531Ted Kremenek} 14317ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek 14417ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenekvoid PTHLexer::DiscardToEndOfLine() { 14517ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek assert(ParsingPreprocessorDirective && ParsingFilename == false && 14617ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek "Must be in a preprocessing directive!"); 1474d35da2e41941965bbee8ed7e8c30e7c21000d71Ted Kremenek 148e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek // We assume that if the preprocessor wishes to discard to the end of 149e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek // the line that it also means to end the current preprocessor directive. 150e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek ParsingPreprocessorDirective = false; 1511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15274c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek // Skip tokens by only peeking at their token kind and the flags. 15374c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek // We don't need to actually reconstruct full tokens from the token buffer. 15474c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek // This saves some copies and it also reduces IdentifierInfo* lookup. 155da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* p = CurPtr; 15674c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek while (1) { 15774c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek // Read the token kind. Are we at the end of the file? 15874c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek tok::TokenKind x = (tok::TokenKind) (uint8_t) *p; 15974c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek if (x == tok::eof) break; 1601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16174c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek // Read the token flags. Are we at the start of the next line? 16274c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek Token::TokenFlags y = (Token::TokenFlags) (uint8_t) p[1]; 16380d2f3059326f99ebf7c867db1c7f106ec9485f5Ted Kremenek if (y & Token::StartOfLine) break; 16474c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek 16574c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek // Skip to the next token. 16674c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek p += DISK_TOKEN_SIZE; 16774c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek } 1681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16974c3e6e5e95af08096aab415d1ce15f15ffff02aTed Kremenek CurPtr = p; 17017ff58a63197b398ae52697b088dc0fb8b255519Ted Kremenek} 1710c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek 172268ee7016a2811803989487c0ad3799486092c63Ted Kremenek/// SkipBlock - Used by Preprocessor to skip the current conditional block. 173268ee7016a2811803989487c0ad3799486092c63Ted Kremenekbool PTHLexer::SkipBlock() { 174268ee7016a2811803989487c0ad3799486092c63Ted Kremenek assert(CurPPCondPtr && "No cached PP conditional information."); 175268ee7016a2811803989487c0ad3799486092c63Ted Kremenek assert(LastHashTokPtr && "No known '#' token."); 1761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 177da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* HashEntryI = 0; 1781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump uint32_t Offset; 179268ee7016a2811803989487c0ad3799486092c63Ted Kremenek uint32_t TableIdx; 1801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 181268ee7016a2811803989487c0ad3799486092c63Ted Kremenek do { 18241a2660377d215d004fe413c03874bd066b5384cTed Kremenek // Read the token offset from the side-table. 1835ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner Offset = ReadLE32(CurPPCondPtr); 1841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Read the target table index from the side-table. 1865ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner TableIdx = ReadLE32(CurPPCondPtr); 1871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18841a2660377d215d004fe413c03874bd066b5384cTed Kremenek // Compute the actual memory address of the '#' token data for this entry. 18941a2660377d215d004fe413c03874bd066b5384cTed Kremenek HashEntryI = TokBuf + Offset; 19041a2660377d215d004fe413c03874bd066b5384cTed Kremenek 19141a2660377d215d004fe413c03874bd066b5384cTed Kremenek // Optmization: "Sibling jumping". #if...#else...#endif blocks can 19241a2660377d215d004fe413c03874bd066b5384cTed Kremenek // contain nested blocks. In the side-table we can jump over these 19341a2660377d215d004fe413c03874bd066b5384cTed Kremenek // nested blocks instead of doing a linear search if the next "sibling" 19441a2660377d215d004fe413c03874bd066b5384cTed Kremenek // entry is not at a location greater than LastHashTokPtr. 19541a2660377d215d004fe413c03874bd066b5384cTed Kremenek if (HashEntryI < LastHashTokPtr && TableIdx) { 19641a2660377d215d004fe413c03874bd066b5384cTed Kremenek // In the side-table we are still at an entry for a '#' token that 19741a2660377d215d004fe413c03874bd066b5384cTed Kremenek // is earlier than the last one we saw. Check if the location we would 19841a2660377d215d004fe413c03874bd066b5384cTed Kremenek // stride gets us closer. 199da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* NextPPCondPtr = 200da9d61c96c412f6babc7f824152609562f302388Chris Lattner PPCond + TableIdx*(sizeof(uint32_t)*2); 20141a2660377d215d004fe413c03874bd066b5384cTed Kremenek assert(NextPPCondPtr >= CurPPCondPtr); 20241a2660377d215d004fe413c03874bd066b5384cTed Kremenek // Read where we should jump to. 2035ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner uint32_t TmpOffset = ReadLE32(NextPPCondPtr); 204da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* HashEntryJ = TokBuf + TmpOffset; 2051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20641a2660377d215d004fe413c03874bd066b5384cTed Kremenek if (HashEntryJ <= LastHashTokPtr) { 20741a2660377d215d004fe413c03874bd066b5384cTed Kremenek // Jump directly to the next entry in the side table. 20841a2660377d215d004fe413c03874bd066b5384cTed Kremenek HashEntryI = HashEntryJ; 20941a2660377d215d004fe413c03874bd066b5384cTed Kremenek Offset = TmpOffset; 2105ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner TableIdx = ReadLE32(NextPPCondPtr); 21141a2660377d215d004fe413c03874bd066b5384cTed Kremenek CurPPCondPtr = NextPPCondPtr; 21241a2660377d215d004fe413c03874bd066b5384cTed Kremenek } 21341a2660377d215d004fe413c03874bd066b5384cTed Kremenek } 214268ee7016a2811803989487c0ad3799486092c63Ted Kremenek } 2151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump while (HashEntryI < LastHashTokPtr); 21641a2660377d215d004fe413c03874bd066b5384cTed Kremenek assert(HashEntryI == LastHashTokPtr && "No PP-cond entry found for '#'"); 217268ee7016a2811803989487c0ad3799486092c63Ted Kremenek assert(TableIdx && "No jumping from #endifs."); 2181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 219268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // Update our side-table iterator. 220da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* NextPPCondPtr = PPCond + TableIdx*(sizeof(uint32_t)*2); 221268ee7016a2811803989487c0ad3799486092c63Ted Kremenek assert(NextPPCondPtr >= CurPPCondPtr); 222268ee7016a2811803989487c0ad3799486092c63Ted Kremenek CurPPCondPtr = NextPPCondPtr; 2231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 224268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // Read where we should jump to. 2255ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner HashEntryI = TokBuf + ReadLE32(NextPPCondPtr); 2265ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner uint32_t NextIdx = ReadLE32(NextPPCondPtr); 2271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 228268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // By construction NextIdx will be zero if this is a #endif. This is useful 229268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // to know to obviate lexing another token. 230268ee7016a2811803989487c0ad3799486092c63Ted Kremenek bool isEndif = NextIdx == 0; 2311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 232268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // This case can occur when we see something like this: 233268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // 234268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // #if ... 235268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // /* a comment or nothing */ 236268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // #elif 237268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // 238268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // If we are skipping the first #if block it will be the case that CurPtr 239268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // already points 'elif'. Just return. 2401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24141a2660377d215d004fe413c03874bd066b5384cTed Kremenek if (CurPtr > HashEntryI) { 24241a2660377d215d004fe413c03874bd066b5384cTed Kremenek assert(CurPtr == HashEntryI + DISK_TOKEN_SIZE); 243268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // Did we reach a #endif? If so, go ahead and consume that token as well. 244268ee7016a2811803989487c0ad3799486092c63Ted Kremenek if (isEndif) 245e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek CurPtr += DISK_TOKEN_SIZE*2; 246268ee7016a2811803989487c0ad3799486092c63Ted Kremenek else 24741a2660377d215d004fe413c03874bd066b5384cTed Kremenek LastHashTokPtr = HashEntryI; 2481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 249268ee7016a2811803989487c0ad3799486092c63Ted Kremenek return isEndif; 250268ee7016a2811803989487c0ad3799486092c63Ted Kremenek } 251268ee7016a2811803989487c0ad3799486092c63Ted Kremenek 252268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // Otherwise, we need to advance. Update CurPtr to point to the '#' token. 25341a2660377d215d004fe413c03874bd066b5384cTed Kremenek CurPtr = HashEntryI; 2541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 255268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // Update the location of the last observed '#'. This is useful if we 256268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // are skipping multiple blocks. 257268ee7016a2811803989487c0ad3799486092c63Ted Kremenek LastHashTokPtr = CurPtr; 258268ee7016a2811803989487c0ad3799486092c63Ted Kremenek 259e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek // Skip the '#' token. 260da9d61c96c412f6babc7f824152609562f302388Chris Lattner assert(((tok::TokenKind)*CurPtr) == tok::hash); 261e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek CurPtr += DISK_TOKEN_SIZE; 2621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 263268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // Did we reach a #endif? If so, go ahead and consume that token as well. 264e5680f3cd678014cf0872d34726dc804b0cbbdd4Ted Kremenek if (isEndif) { CurPtr += DISK_TOKEN_SIZE*2; } 265268ee7016a2811803989487c0ad3799486092c63Ted Kremenek 266268ee7016a2811803989487c0ad3799486092c63Ted Kremenek return isEndif; 267268ee7016a2811803989487c0ad3799486092c63Ted Kremenek} 268268ee7016a2811803989487c0ad3799486092c63Ted Kremenek 26930a12ec2a7f331d9e08acabe7cda853aaa7ba54bTed KremenekSourceLocation PTHLexer::getSourceLocation() { 2701b5285e1ba31975864da356b2ed927e87670e654Chris Lattner // getSourceLocation is not on the hot path. It is used to get the location 2711b5285e1ba31975864da356b2ed927e87670e654Chris Lattner // of the next token when transitioning back to this lexer when done 27230a12ec2a7f331d9e08acabe7cda853aaa7ba54bTed Kremenek // handling a #included file. Just read the necessary data from the token 27330a12ec2a7f331d9e08acabe7cda853aaa7ba54bTed Kremenek // data buffer to construct the SourceLocation object. 27430a12ec2a7f331d9e08acabe7cda853aaa7ba54bTed Kremenek // NOTE: This is a virtual function; hence it is defined out-of-line. 275b248d53f2599d8e7b53b144b713e163ca521ffcaTed Kremenek const unsigned char *OffsetPtr = CurPtr + (DISK_TOKEN_SIZE - 4); 2765ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner uint32_t Offset = ReadLE32(OffsetPtr); 2771b5285e1ba31975864da356b2ed927e87670e654Chris Lattner return FileStartLoc.getFileLocWithOffset(Offset); 27830a12ec2a7f331d9e08acabe7cda853aaa7ba54bTed Kremenek} 27930a12ec2a7f331d9e08acabe7cda853aaa7ba54bTed Kremenek 2805f074266cc59563036c40516c814d63825723e20Ted Kremenek//===----------------------------------------------------------------------===// 281d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek// PTH file lookup: map from strings to file data. 282d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek//===----------------------------------------------------------------------===// 2830c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek 2840c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek/// PTHFileLookup - This internal data structure is used by the PTHManager 2850c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek/// to map from FileEntry objects managed by FileManager to offsets within 2860c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek/// the PTH file. 2870c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremeneknamespace { 28885b4521e34dcd4a0a4a1f0819e1123128e5a3125Benjamin Kramerclass PTHFileData { 289d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek const uint32_t TokenOff; 290d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek const uint32_t PPCondOff; 2910c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenekpublic: 292d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek PTHFileData(uint32_t tokenOff, uint32_t ppCondOff) 293d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek : TokenOff(tokenOff), PPCondOff(ppCondOff) {} 2941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump uint32_t getTokenOffset() const { return TokenOff; } 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump uint32_t getPPCondOffset() const { return PPCondOff; } 297d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek}; 2981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 30085b4521e34dcd4a0a4a1f0819e1123128e5a3125Benjamin Kramerclass PTHFileLookupCommonTrait { 3010c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenekpublic: 302a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek typedef std::pair<unsigned char, const char*> internal_key_type; 303a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek 304a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static unsigned ComputeHash(internal_key_type x) { 3052596e429a61602312bdd149786045b8a90cd2d10Daniel Dunbar return llvm::HashString(x.second); 306d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek } 3071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 308d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek static std::pair<unsigned, unsigned> 309d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek ReadKeyDataLength(const unsigned char*& d) { 310a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek unsigned keyLen = (unsigned) ReadUnalignedLE16(d); 311a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek unsigned dataLen = (unsigned) *(d++); 312a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return std::make_pair(keyLen, dataLen); 3130c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek } 3141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 315a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static internal_key_type ReadKey(const unsigned char* d, unsigned) { 316a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek unsigned char k = *(d++); // Read the entry kind. 317a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return std::make_pair(k, (const char*) d); 318d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek } 319337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek}; 3201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 32185b4521e34dcd4a0a4a1f0819e1123128e5a3125Benjamin Kramerclass PTHFileLookupTrait : public PTHFileLookupCommonTrait { 322337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenekpublic: 323337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek typedef const FileEntry* external_key_type; 324337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek typedef PTHFileData data_type; 3251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 326a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static internal_key_type GetInternalKey(const FileEntry* FE) { 327a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return std::make_pair((unsigned char) 0x1, FE->getName()); 328337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek } 329a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek 330a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static bool EqualKey(internal_key_type a, internal_key_type b) { 331a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return a.first == b.first && strcmp(a.second, b.second) == 0; 3321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static PTHFileData ReadData(const internal_key_type& k, 3351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const unsigned char* d, unsigned) { 336a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek assert(k.first == 0x1 && "Only file lookups can match!"); 337d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek uint32_t x = ::ReadUnalignedLE32(d); 338d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek uint32_t y = ::ReadUnalignedLE32(d); 3391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return PTHFileData(x, y); 3400c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek } 3410c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek}; 3427e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek 34385b4521e34dcd4a0a4a1f0819e1123128e5a3125Benjamin Kramerclass PTHStringLookupTrait { 3447e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenekpublic: 3451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump typedef uint32_t 3467e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek data_type; 3477e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek 3487e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek typedef const std::pair<const char*, unsigned> 3497e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek external_key_type; 3507e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek 3517e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek typedef external_key_type internal_key_type; 3521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3537e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek static bool EqualKey(const internal_key_type& a, 3547e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek const internal_key_type& b) { 3557e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek return (a.second == b.second) ? memcmp(a.first, b.first, a.second) == 0 3567e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek : false; 3577e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek } 3581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3597e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek static unsigned ComputeHash(const internal_key_type& a) { 3602596e429a61602312bdd149786045b8a90cd2d10Daniel Dunbar return llvm::HashString(llvm::StringRef(a.first, a.second)); 3617e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek } 3621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3637e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek // This hopefully will just get inlined and removed by the optimizer. 3647e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek static const internal_key_type& 3657e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek GetInternalKey(const external_key_type& x) { return x; } 3661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3677e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek static std::pair<unsigned, unsigned> 3687e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek ReadKeyDataLength(const unsigned char*& d) { 3697e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek return std::make_pair((unsigned) ReadUnalignedLE16(d), sizeof(uint32_t)); 3707e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek } 3711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3727e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek static std::pair<const char*, unsigned> 3737e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek ReadKey(const unsigned char* d, unsigned n) { 3747e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek assert(n >= 2 && d[n-1] == '\0'); 3757e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek return std::make_pair((const char*) d, n-1); 3767e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek } 3771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 378a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static uint32_t ReadData(const internal_key_type& k, const unsigned char* d, 379a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek unsigned) { 3807e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek return ::ReadUnalignedLE32(d); 3817e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek } 3827e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek}; 3831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end anonymous namespace 385d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek 3867e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenektypedef OnDiskChainedHashTable<PTHFileLookupTrait> PTHFileLookup; 3877e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenektypedef OnDiskChainedHashTable<PTHStringLookupTrait> PTHStringIdLookup; 3880c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek 3890c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek//===----------------------------------------------------------------------===// 3900c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek// PTHManager methods. 3910c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek//===----------------------------------------------------------------------===// 3920c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek 3930c6a77bc1f52f282a969538f139ebde429076ed3Ted KremenekPTHManager::PTHManager(const llvm::MemoryBuffer* buf, void* fileLookup, 394da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* idDataTable, 3951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IdentifierInfo** perIDCache, 3967e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek void* stringIdLookup, unsigned numIds, 39768228634016f644a1164fa1f024a9ce2093656bfTed Kremenek const unsigned char* spellingBase, 39868228634016f644a1164fa1f024a9ce2093656bfTed Kremenek const char* originalSourceFile) 3996183e4815a4019e97ad01bd880f12355599b75fdTed Kremenek: Buf(buf), PerIDCache(perIDCache), FileLookup(fileLookup), 4007e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek IdDataTable(idDataTable), StringIdLookup(stringIdLookup), 40168228634016f644a1164fa1f024a9ce2093656bfTed Kremenek NumIds(numIds), PP(0), SpellingBase(spellingBase), 40268228634016f644a1164fa1f024a9ce2093656bfTed Kremenek OriginalSourceFile(originalSourceFile) {} 4030c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek 4040c6a77bc1f52f282a969538f139ebde429076ed3Ted KremenekPTHManager::~PTHManager() { 4050c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek delete Buf; 4060c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek delete (PTHFileLookup*) FileLookup; 4077e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek delete (PTHStringIdLookup*) StringIdLookup; 4080e50b6e7c104d00614baa3d80df62f1630a94d9cTed Kremenek free(PerIDCache); 4090c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek} 4100c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek 4113574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbarstatic void InvalidPTH(Diagnostic &Diags, const char *Msg) { 4123574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(Diags.getCustomDiagID(Diagnostic::Error, Msg)); 41326555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek} 41426555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek 4153574f46cf495ec61618fd6864b045c5b1d0d5068Daniel DunbarPTHManager* PTHManager::Create(const std::string& file, Diagnostic &Diags) { 4160c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // Memory map the PTH file. 4170c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek llvm::OwningPtr<llvm::MemoryBuffer> 4180c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek File(llvm::MemoryBuffer::getFile(file.c_str())); 4191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4208a6aec620dbec1f292fe4116c0373ac81ab90234Ted Kremenek if (!File) { 4213574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(diag::err_invalid_pth_file) << file; 4220c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek return 0; 4238a6aec620dbec1f292fe4116c0373ac81ab90234Ted Kremenek } 4241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4250c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // Get the buffer ranges and check if there are at least three 32-bit 4260c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // words at the end of the file. 427da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* BufBeg = (unsigned char*)File->getBufferStart(); 428da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* BufEnd = (unsigned char*)File->getBufferEnd(); 429e1b6498c41b94c3bc5cede17b0702282543385efTed Kremenek 430e1b6498c41b94c3bc5cede17b0702282543385efTed Kremenek // Check the prologue of the file. 4314adc71ae2cfc190f8d2cf58876e2a7893aa74ee0Ted Kremenek if ((BufEnd - BufBeg) < (signed) (sizeof("cfe-pth") + 3 + 4) || 43226555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek memcmp(BufBeg, "cfe-pth", sizeof("cfe-pth") - 1) != 0) { 4333574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(diag::err_invalid_pth_file) << file; 434e1b6498c41b94c3bc5cede17b0702282543385efTed Kremenek return 0; 43526555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek } 4361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 43767d15050bbea16ae256e204ecd464f2e454c3c99Ted Kremenek // Read the PTH version. 438e1b6498c41b94c3bc5cede17b0702282543385efTed Kremenek const unsigned char *p = BufBeg + (sizeof("cfe-pth") - 1); 43967d15050bbea16ae256e204ecd464f2e454c3c99Ted Kremenek unsigned Version = ReadLE32(p); 4401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4413574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar if (Version < PTHManager::Version) { 4423574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar InvalidPTH(Diags, 4431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Version < PTHManager::Version 44426555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek ? "PTH file uses an older PTH format that is no longer supported" 44526555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek : "PTH file uses a newer PTH format that cannot be read"); 44667d15050bbea16ae256e204ecd464f2e454c3c99Ted Kremenek return 0; 44726555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek } 44867d15050bbea16ae256e204ecd464f2e454c3c99Ted Kremenek 4491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Compute the address of the index table at the end of the PTH file. 450a4bd8eb4d6d4b625f6bbb62fc180b02eab6433edTed Kremenek const unsigned char *PrologueOffset = p; 4511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 452a4bd8eb4d6d4b625f6bbb62fc180b02eab6433edTed Kremenek if (PrologueOffset >= BufEnd) { 4533574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(diag::err_invalid_pth_file) << file; 454e1b6498c41b94c3bc5cede17b0702282543385efTed Kremenek return 0; 45526555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek } 4561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4570c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // Construct the file lookup table. This will be used for mapping from 4580c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // FileEntry*'s to cached tokens. 459a4bd8eb4d6d4b625f6bbb62fc180b02eab6433edTed Kremenek const unsigned char* FileTableOffset = PrologueOffset + sizeof(uint32_t)*2; 4605ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner const unsigned char* FileTable = BufBeg + ReadLE32(FileTableOffset); 4611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4620c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek if (!(FileTable > BufBeg && FileTable < BufEnd)) { 4633574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(diag::err_invalid_pth_file) << file; 4640c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek return 0; // FIXME: Proper error diagnostic? 4650c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek } 4661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 467d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek llvm::OwningPtr<PTHFileLookup> FL(PTHFileLookup::Create(FileTable, BufBeg)); 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4691d20197cb9478f3db17cbcfc57a1f8182843fc6aTed Kremenek // Warn if the PTH file is empty. We still want to create a PTHManager 4701d20197cb9478f3db17cbcfc57a1f8182843fc6aTed Kremenek // as the PTH could be used with -include-pth. 4711d20197cb9478f3db17cbcfc57a1f8182843fc6aTed Kremenek if (FL->isEmpty()) 4723574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar InvalidPTH(Diags, "PTH file contains no cached source data"); 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4740c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // Get the location of the table mapping from persistent ids to the 4750c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // data needed to reconstruct identifiers. 476a4bd8eb4d6d4b625f6bbb62fc180b02eab6433edTed Kremenek const unsigned char* IDTableOffset = PrologueOffset + sizeof(uint32_t)*0; 4775ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner const unsigned char* IData = BufBeg + ReadLE32(IDTableOffset); 4781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 479cdd8f2153e18796e9e2a126ebcbd4f3e1bd7135bTed Kremenek if (!(IData >= BufBeg && IData < BufEnd)) { 4803574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(diag::err_invalid_pth_file) << file; 48126555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek return 0; 4820c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek } 4831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4847e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek // Get the location of the hashtable mapping between strings and 4857e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek // persistent IDs. 486a4bd8eb4d6d4b625f6bbb62fc180b02eab6433edTed Kremenek const unsigned char* StringIdTableOffset = PrologueOffset + sizeof(uint32_t)*1; 4877e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek const unsigned char* StringIdTable = BufBeg + ReadLE32(StringIdTableOffset); 4887e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek if (!(StringIdTable >= BufBeg && StringIdTable < BufEnd)) { 4893574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(diag::err_invalid_pth_file) << file; 49026555b18aa2c3b78744e77927acd3faa53ae7369Ted Kremenek return 0; 49172b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek } 4927e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek 4937e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek llvm::OwningPtr<PTHStringIdLookup> SL(PTHStringIdLookup::Create(StringIdTable, 4947e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek BufBeg)); 4951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 496277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek // Get the location of the spelling cache. 497a4bd8eb4d6d4b625f6bbb62fc180b02eab6433edTed Kremenek const unsigned char* spellingBaseOffset = PrologueOffset + sizeof(uint32_t)*3; 498277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek const unsigned char* spellingBase = BufBeg + ReadLE32(spellingBaseOffset); 499277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek if (!(spellingBase >= BufBeg && spellingBase < BufEnd)) { 5003574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar Diags.Report(diag::err_invalid_pth_file) << file; 501277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek return 0; 502277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek } 5031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5046183e4815a4019e97ad01bd880f12355599b75fdTed Kremenek // Get the number of IdentifierInfos and pre-allocate the identifier cache. 5055ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner uint32_t NumIds = ReadLE32(IData); 5061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5076183e4815a4019e97ad01bd880f12355599b75fdTed Kremenek // Pre-allocate the peristent ID -> IdentifierInfo* cache. We use calloc() 5086183e4815a4019e97ad01bd880f12355599b75fdTed Kremenek // so that we in the best case only zero out memory once when the OS returns 5096183e4815a4019e97ad01bd880f12355599b75fdTed Kremenek // us new pages. 510cdd8f2153e18796e9e2a126ebcbd4f3e1bd7135bTed Kremenek IdentifierInfo** PerIDCache = 0; 5111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 512cdd8f2153e18796e9e2a126ebcbd4f3e1bd7135bTed Kremenek if (NumIds) { 5131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump PerIDCache = (IdentifierInfo**)calloc(NumIds, sizeof(*PerIDCache)); 514cdd8f2153e18796e9e2a126ebcbd4f3e1bd7135bTed Kremenek if (!PerIDCache) { 5153574f46cf495ec61618fd6864b045c5b1d0d5068Daniel Dunbar InvalidPTH(Diags, "Could not allocate memory for processing PTH file"); 516cdd8f2153e18796e9e2a126ebcbd4f3e1bd7135bTed Kremenek return 0; 517cdd8f2153e18796e9e2a126ebcbd4f3e1bd7135bTed Kremenek } 5186183e4815a4019e97ad01bd880f12355599b75fdTed Kremenek } 519cdd8f2153e18796e9e2a126ebcbd4f3e1bd7135bTed Kremenek 52068228634016f644a1164fa1f024a9ce2093656bfTed Kremenek // Compute the address of the original source file. 52168228634016f644a1164fa1f024a9ce2093656bfTed Kremenek const unsigned char* originalSourceBase = PrologueOffset + sizeof(uint32_t)*4; 52268228634016f644a1164fa1f024a9ce2093656bfTed Kremenek unsigned len = ReadUnalignedLE16(originalSourceBase); 5231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!len) originalSourceBase = 0; 5241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 52572b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek // Create the new PTHManager. 52672b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek return new PTHManager(File.take(), FL.take(), IData, PerIDCache, 52768228634016f644a1164fa1f024a9ce2093656bfTed Kremenek SL.take(), NumIds, spellingBase, 52868228634016f644a1164fa1f024a9ce2093656bfTed Kremenek (const char*) originalSourceBase); 5290c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek} 53068228634016f644a1164fa1f024a9ce2093656bfTed Kremenek 53177ecb3a28f21496ecfdbb3d5f5b66b0d2abf48c9Chris LattnerIdentifierInfo* PTHManager::LazilyCreateIdentifierInfo(unsigned PersistentID) { 5320c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // Look in the PTH file for the string data for the IdentifierInfo object. 53377ecb3a28f21496ecfdbb3d5f5b66b0d2abf48c9Chris Lattner const unsigned char* TableEntry = IdDataTable + sizeof(uint32_t)*PersistentID; 534da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* IDData = 5355ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner (const unsigned char*)Buf->getBufferStart() + ReadLE32(TableEntry); 536da9d61c96c412f6babc7f824152609562f302388Chris Lattner assert(IDData < (const unsigned char*)Buf->getBufferEnd()); 5371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 53872b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek // Allocate the object. 539da9d61c96c412f6babc7f824152609562f302388Chris Lattner std::pair<IdentifierInfo,const unsigned char*> *Mem = 540da9d61c96c412f6babc7f824152609562f302388Chris Lattner Alloc.Allocate<std::pair<IdentifierInfo,const unsigned char*> >(); 54172b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 54272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek Mem->second = IDData; 5437e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek assert(IDData[0] != '\0'); 544ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek IdentifierInfo *II = new ((void*) Mem) IdentifierInfo(); 5451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 54672b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek // Store the new IdentifierInfo in the cache. 54777ecb3a28f21496ecfdbb3d5f5b66b0d2abf48c9Chris Lattner PerIDCache[PersistentID] = II; 548e013d685c6689ac7ae103ee88acf573422d1ed6aDaniel Dunbar assert(II->getNameStart() && II->getNameStart()[0] != '\0'); 5490c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek return II; 5500c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek} 5510c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek 55272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted KremenekIdentifierInfo* PTHManager::get(const char *NameStart, const char *NameEnd) { 5537e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek PTHStringIdLookup& SL = *((PTHStringIdLookup*)StringIdLookup); 5547e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek // Double check our assumption that the last character isn't '\0'. 55582320e94606cfb0f68c6049c070c3600f8df9081Daniel Dunbar assert(NameEnd==NameStart || NameStart[NameEnd-NameStart-1] != '\0'); 5567e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek PTHStringIdLookup::iterator I = SL.find(std::make_pair(NameStart, 5577e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek NameEnd - NameStart)); 5587e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek if (I == SL.end()) // No identifier found? 5597e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek return 0; 56072b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 5617e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek // Match found. Return the identifier! 5627e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek assert(*I > 0); 5637e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek return GetIdentifierInfo(*I-1); 5647e3a004c6ed1fe87912203b9c5a113f8da89d261Ted Kremenek} 56572b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 566f056d92e182cbe4f62c8d14102544dc38066dabcChris LattnerPTHLexer *PTHManager::CreateLexer(FileID FID) { 567f056d92e182cbe4f62c8d14102544dc38066dabcChris Lattner const FileEntry *FE = PP->getSourceManager().getFileEntryForID(FID); 5680c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek if (!FE) 5690c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek return 0; 5701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5710c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // Lookup the FileEntry object in our file lookup data structure. It will 5720c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // return a variant that indicates whether or not there is an offset within 5730c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // the PTH file that contains cached tokens. 574d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek PTHFileLookup& PFL = *((PTHFileLookup*)FileLookup); 575d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek PTHFileLookup::iterator I = PFL.find(FE); 5761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 577d8c02929fe70f03111be73e7b8c402c724238ee9Ted Kremenek if (I == PFL.end()) // No tokens available? 5780c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek return 0; 5791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const PTHFileData& FileData = *I; 5811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 582da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char *BufStart = (const unsigned char *)Buf->getBufferStart(); 5830c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek // Compute the offset of the token data within the buffer. 584da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* data = BufStart + FileData.getTokenOffset(); 585268ee7016a2811803989487c0ad3799486092c63Ted Kremenek 586268ee7016a2811803989487c0ad3799486092c63Ted Kremenek // Get the location of pp-conditional table. 587da9d61c96c412f6babc7f824152609562f302388Chris Lattner const unsigned char* ppcond = BufStart + FileData.getPPCondOffset(); 5885ff4317536dbd7f03332bb250c8b35ec04a6f5dbChris Lattner uint32_t Len = ReadLE32(ppcond); 5891b5285e1ba31975864da356b2ed927e87670e654Chris Lattner if (Len == 0) ppcond = 0; 5901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 59172b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek assert(PP && "No preprocessor set yet!"); 5921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return new PTHLexer(*PP, FID, data, ppcond, *this); 5930c6a77bc1f52f282a969538f139ebde429076ed3Ted Kremenek} 594337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 595337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek//===----------------------------------------------------------------------===// 596337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek// 'stat' caching. 597337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek//===----------------------------------------------------------------------===// 598337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 599337edcdbec05316b407d0d64865c88ff8597d910Ted Kremeneknamespace { 60085b4521e34dcd4a0a4a1f0819e1123128e5a3125Benjamin Kramerclass PTHStatData { 601337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenekpublic: 602a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek const bool hasStat; 603337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek const ino_t ino; 604337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek const dev_t dev; 605337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek const mode_t mode; 606337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek const time_t mtime; 607337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek const off_t size; 6081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 609337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek PTHStatData(ino_t i, dev_t d, mode_t mo, time_t m, off_t s) 6101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : hasStat(true), ino(i), dev(d), mode(mo), mtime(m), size(s) {} 6111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 612a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek PTHStatData() 613a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek : hasStat(false), ino(0), dev(0), mode(0), mtime(0), size(0) {} 614337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek}; 6151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 61685b4521e34dcd4a0a4a1f0819e1123128e5a3125Benjamin Kramerclass PTHStatLookupTrait : public PTHFileLookupCommonTrait { 617337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenekpublic: 618a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek typedef const char* external_key_type; // const char* 619337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek typedef PTHStatData data_type; 6201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 621a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static internal_key_type GetInternalKey(const char *path) { 622a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek // The key 'kind' doesn't matter here because it is ignored in EqualKey. 623a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return std::make_pair((unsigned char) 0x0, path); 624a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek } 625a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek 626a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static bool EqualKey(internal_key_type a, internal_key_type b) { 627a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek // When doing 'stat' lookups we don't care about the kind of 'a' and 'b', 628a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek // just the paths. 629a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return strcmp(a.second, b.second) == 0; 6301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 6311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 632a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek static data_type ReadData(const internal_key_type& k, const unsigned char* d, 6331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned) { 6341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 635ad6ce5cb0e3b5dd853d2b1e337797a6fc1091e21Ted Kremenek if (k.first /* File or Directory */) { 636ad6ce5cb0e3b5dd853d2b1e337797a6fc1091e21Ted Kremenek if (k.first == 0x1 /* File */) d += 4 * 2; // Skip the first 2 words. 637a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek ino_t ino = (ino_t) ReadUnalignedLE32(d); 638a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek dev_t dev = (dev_t) ReadUnalignedLE32(d); 639a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek mode_t mode = (mode_t) ReadUnalignedLE16(d); 6401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump time_t mtime = (time_t) ReadUnalignedLE64(d); 641a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return data_type(ino, dev, mode, mtime, (off_t) ReadUnalignedLE64(d)); 642a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek } 643ad6ce5cb0e3b5dd853d2b1e337797a6fc1091e21Ted Kremenek 644ad6ce5cb0e3b5dd853d2b1e337797a6fc1091e21Ted Kremenek // Negative stat. Don't read anything. 645a4b44dd9d30929a35c44d85102e5241ee847b2f2Ted Kremenek return data_type(); 646337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek } 647337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek}; 648337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 64985b4521e34dcd4a0a4a1f0819e1123128e5a3125Benjamin Kramerclass PTHStatCache : public StatSysCallCache { 650337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek typedef OnDiskChainedHashTable<PTHStatLookupTrait> CacheTy; 651337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek CacheTy Cache; 652337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 6531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 654337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek PTHStatCache(PTHFileLookup &FL) : 655337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek Cache(FL.getNumBuckets(), FL.getNumEntries(), FL.getBuckets(), 656337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek FL.getBase()) {} 657337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 658337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek ~PTHStatCache() {} 6591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 660337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek int stat(const char *path, struct stat *buf) { 661337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek // Do the lookup for the file's data in the PTH file. 662337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek CacheTy::iterator I = Cache.find(path); 663337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 664337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek // If we don't get a hit in the PTH file just forward to 'stat'. 66552e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor if (I == Cache.end()) 66652e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor return StatSysCallCache::stat(path, buf); 6671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 668337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek const PTHStatData& Data = *I; 6691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 670ad6ce5cb0e3b5dd853d2b1e337797a6fc1091e21Ted Kremenek if (!Data.hasStat) 671ad6ce5cb0e3b5dd853d2b1e337797a6fc1091e21Ted Kremenek return 1; 672ad6ce5cb0e3b5dd853d2b1e337797a6fc1091e21Ted Kremenek 673337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek buf->st_ino = Data.ino; 674337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek buf->st_dev = Data.dev; 675337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek buf->st_mtime = Data.mtime; 676337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek buf->st_mode = Data.mode; 677337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek buf->st_size = Data.size; 678337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek return 0; 679337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek } 680337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek}; 681d578569d50adc6e9b1a2f91931add6b471b2378eTed Kremenek} // end anonymous namespace 682337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 683337edcdbec05316b407d0d64865c88ff8597d910Ted KremenekStatSysCallCache *PTHManager::createStatCache() { 6845f747d187bf8dc779a4acc180f9c21f1dbf83f6aTed Kremenek return new PTHStatCache(*((PTHFileLookup*) FileLookup)); 685337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek} 686