13ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch// Copyright 2012 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifndef V8_TOKEN_H_ 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define V8_TOKEN_H_ 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 313e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu#include "checks.h" 323e5fa29ddb82551500b118e9bf37af3966277b70Teng-Hui Zhu 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// TOKEN_LIST takes a list of 3 macros M, all of which satisfy the 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// same signature M(name, string, precedence), where name is the 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// symbolic token name, string is the corresponding syntactic symbol 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (or NULL, for literals), and precedence is the precedence (or 0). 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The parameters are invoked for token categories as follows: 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// T: Non-keyword tokens 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// K: Keyword tokens 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// IGNORE_TOKEN is a convenience macro that can be supplied as 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// an argument (at any position) for a TOKEN_LIST call. It does 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// nothing with tokens belonging to the respective category. 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define IGNORE_TOKEN(name, string, precedence) 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 5169a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch#define TOKEN_LIST(T, K) \ 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* End of source indicator. */ \ 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(EOS, "EOS", 0) \ 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Punctuators (ECMA-262, section 7.7, page 15). */ \ 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LPAREN, "(", 0) \ 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(RPAREN, ")", 0) \ 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LBRACK, "[", 0) \ 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(RBRACK, "]", 0) \ 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LBRACE, "{", 0) \ 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(RBRACE, "}", 0) \ 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(COLON, ":", 0) \ 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SEMICOLON, ";", 0) \ 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(PERIOD, ".", 0) \ 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(CONDITIONAL, "?", 3) \ 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(INC, "++", 0) \ 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(DEC, "--", 0) \ 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Assignment operators. */ \ 70e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke /* IsAssignmentOp() and Assignment::is_compound() relies on */ \ 71e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke /* this block of enum values being contiguous and sorted in the */ \ 72e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke /* same order! */ \ 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(INIT_VAR, "=init_var", 2) /* AST-use only. */ \ 7469a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch T(INIT_LET, "=init_let", 2) /* AST-use only. */ \ 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(INIT_CONST, "=init_const", 2) /* AST-use only. */ \ 763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch T(INIT_CONST_HARMONY, "=init_const_harmony", 2) /* AST-use only. */ \ 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN, "=", 2) \ 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_BIT_OR, "|=", 2) \ 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_BIT_XOR, "^=", 2) \ 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_BIT_AND, "&=", 2) \ 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SHL, "<<=", 2) \ 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SAR, ">>=", 2) \ 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SHR, ">>>=", 2) \ 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_ADD, "+=", 2) \ 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SUB, "-=", 2) \ 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_MUL, "*=", 2) \ 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_DIV, "/=", 2) \ 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_MOD, "%=", 2) \ 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Binary operators sorted by precedence. */ \ 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IsBinaryOp() relies on this block of enum values */ \ 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* being contiguous and sorted in the same order! */ \ 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(COMMA, ",", 1) \ 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(OR, "||", 4) \ 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(AND, "&&", 5) \ 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_OR, "|", 6) \ 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_XOR, "^", 7) \ 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_AND, "&", 8) \ 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SHL, "<<", 11) \ 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SAR, ">>", 11) \ 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SHR, ">>>", 11) \ 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ADD, "+", 12) \ 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SUB, "-", 12) \ 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(MUL, "*", 13) \ 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(DIV, "/", 13) \ 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(MOD, "%", 13) \ 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Compare operators sorted by precedence. */ \ 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IsCompareOp() relies on this block of enum values */ \ 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* being contiguous and sorted in the same order! */ \ 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(EQ, "==", 9) \ 112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NE, "!=", 9) \ 113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(EQ_STRICT, "===", 9) \ 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NE_STRICT, "!==", 9) \ 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LT, "<", 10) \ 116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(GT, ">", 10) \ 117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LTE, "<=", 10) \ 118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(GTE, ">=", 10) \ 119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(INSTANCEOF, "instanceof", 10) \ 120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(IN, "in", 10) \ 121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Unary operators. */ \ 123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IsUnaryOp() relies on this block of enum values */ \ 124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* being contiguous and sorted in the same order! */ \ 125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NOT, "!", 0) \ 126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_NOT, "~", 0) \ 127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DELETE, "delete", 0) \ 128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(TYPEOF, "typeof", 0) \ 129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(VOID, "void", 0) \ 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Keywords (ECMA-262, section 7.5.2, page 13). */ \ 132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(BREAK, "break", 0) \ 133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(CASE, "case", 0) \ 134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(CATCH, "catch", 0) \ 135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(CONTINUE, "continue", 0) \ 136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DEBUGGER, "debugger", 0) \ 137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DEFAULT, "default", 0) \ 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* DELETE */ \ 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DO, "do", 0) \ 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(ELSE, "else", 0) \ 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FINALLY, "finally", 0) \ 142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FOR, "for", 0) \ 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FUNCTION, "function", 0) \ 144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(IF, "if", 0) \ 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IN */ \ 146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* INSTANCEOF */ \ 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(NEW, "new", 0) \ 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(RETURN, "return", 0) \ 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(SWITCH, "switch", 0) \ 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(THIS, "this", 0) \ 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(THROW, "throw", 0) \ 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(TRY, "try", 0) \ 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* TYPEOF */ \ 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(VAR, "var", 0) \ 155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* VOID */ \ 156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(WHILE, "while", 0) \ 157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(WITH, "with", 0) \ 158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Literals (ECMA-262, section 7.8, page 16). */ \ 160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(NULL_LITERAL, "null", 0) \ 161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(TRUE_LITERAL, "true", 0) \ 162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FALSE_LITERAL, "false", 0) \ 163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NUMBER, NULL, 0) \ 164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(STRING, NULL, 0) \ 165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Identifiers (not keywords or future reserved words). */ \ 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(IDENTIFIER, NULL, 0) \ 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 1691e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block /* Future reserved words (ECMA-262, section 7.6.1.2). */ \ 1701e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block T(FUTURE_RESERVED_WORD, NULL, 0) \ 1713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch T(FUTURE_STRICT_RESERVED_WORD, NULL, 0) \ 1721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block K(CONST, "const", 0) \ 1733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch K(EXPORT, "export", 0) \ 1743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch K(IMPORT, "import", 0) \ 17569a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch K(LET, "let", 0) \ 1761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block \ 177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Illegal token - not able to scan. */ \ 178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ILLEGAL, "ILLEGAL", 0) \ 179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Scanner-internal use only. */ \ 181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(WHITESPACE, NULL, 0) 182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 183a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Token { 185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All token values. 187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define T(name, string, precedence) name, 188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block enum Value { 18969a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch TOKEN_LIST(T, T) 190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block NUM_TOKENS 191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#undef T 193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Returns a string corresponding to the C++ token name 195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (e.g. "LT" for the token LT). 196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const char* Name(Value tok) { 197b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ASSERT(tok < NUM_TOKENS); // tok is unsigned 198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return name_[tok]; 199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Predicates 202bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch static bool IsKeyword(Value tok) { 203bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch return token_type[tok] == 'K'; 204bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 205bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsAssignmentOp(Value tok) { 207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return INIT_VAR <= tok && tok <= ASSIGN_MOD; 208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsBinaryOp(Value op) { 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return COMMA <= op && op <= MOD; 212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsCompareOp(Value op) { 215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return EQ <= op && op <= IN; 216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch static bool IsOrderedRelationalCompareOp(Value op) { 219b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return op == LT || op == LTE || op == GT || op == GTE; 220b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 221b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 2223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch static bool IsEqualityOp(Value op) { 2233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch return op == EQ || op == EQ_STRICT; 2243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 2253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 226b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static Value NegateCompareOp(Value op) { 227b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(IsCompareOp(op)); 228b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch switch (op) { 229b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ: return NE; 230b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case NE: return EQ; 231b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ_STRICT: return NE_STRICT; 232b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LT: return GTE; 233b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GT: return LTE; 234b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LTE: return GT; 235b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GTE: return LT; 236b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch default: 237b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return op; 238b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 239b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 240b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 241b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static Value InvertCompareOp(Value op) { 242b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(IsCompareOp(op)); 243b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch switch (op) { 244b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ: return NE; 245b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case NE: return EQ; 246b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ_STRICT: return NE_STRICT; 247b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LT: return GT; 248b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GT: return LT; 249b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LTE: return GTE; 250b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GTE: return LTE; 251b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch default: 252b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return op; 253b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 254b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 255b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 256a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsBitOp(Value op) { 257a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (BIT_OR <= op && op <= SHR) || op == BIT_NOT; 258a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 259a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 260a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsUnaryOp(Value op) { 261a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (NOT <= op && op <= VOID) || op == ADD || op == SUB; 262a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 263a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 264a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsCountOp(Value op) { 265a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return op == INC || op == DEC; 266a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 267a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 26880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static bool IsShiftOp(Value op) { 26980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return (SHL <= op) && (op <= SHR); 27080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 27180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 272a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Returns a string corresponding to the JS token string 273a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (.e., "<" for the token LT) or NULL if the token doesn't 274a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // have a (unique) string (e.g. an IDENTIFIER). 275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const char* String(Value tok) { 276b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ASSERT(tok < NUM_TOKENS); // tok is unsigned. 277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return string_[tok]; 278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Returns the precedence > 0 for binary and compare 281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // operators; returns 0 otherwise. 282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static int Precedence(Value tok) { 283b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ASSERT(tok < NUM_TOKENS); // tok is unsigned. 284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return precedence_[tok]; 285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 287a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 28844f0eee88ff00398ff7f715fab053374d808c90dSteve Block static const char* const name_[NUM_TOKENS]; 28944f0eee88ff00398ff7f715fab053374d808c90dSteve Block static const char* const string_[NUM_TOKENS]; 29044f0eee88ff00398ff7f715fab053374d808c90dSteve Block static const int8_t precedence_[NUM_TOKENS]; 291bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch static const char token_type[NUM_TOKENS]; 292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // V8_TOKEN_H_ 297