token.h revision b0fe1620dcb4135ac3ab2d66ff93072373911299
1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2006-2008 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// F: Future (reserved) keyword tokens 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// IGNORE_TOKEN is a convenience macro that can be supplied as 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// an argument (at any position) for a TOKEN_LIST call. It does 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// nothing with tokens belonging to the respective category. 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define IGNORE_TOKEN(name, string, precedence) 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define TOKEN_LIST(T, K, F) \ 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* End of source indicator. */ \ 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(EOS, "EOS", 0) \ 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Punctuators (ECMA-262, section 7.7, page 15). */ \ 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LPAREN, "(", 0) \ 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(RPAREN, ")", 0) \ 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LBRACK, "[", 0) \ 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(RBRACK, "]", 0) \ 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LBRACE, "{", 0) \ 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(RBRACE, "}", 0) \ 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(COLON, ":", 0) \ 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SEMICOLON, ";", 0) \ 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(PERIOD, ".", 0) \ 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(CONDITIONAL, "?", 3) \ 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(INC, "++", 0) \ 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(DEC, "--", 0) \ 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Assignment operators. */ \ 71e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke /* IsAssignmentOp() and Assignment::is_compound() relies on */ \ 72e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke /* this block of enum values being contiguous and sorted in the */ \ 73e46be819fca9468a0cd4e74859ce0f778eb8ca60Leon Clarke /* same order! */ \ 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(INIT_VAR, "=init_var", 2) /* AST-use only. */ \ 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(INIT_CONST, "=init_const", 2) /* AST-use only. */ \ 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN, "=", 2) \ 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_BIT_OR, "|=", 2) \ 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_BIT_XOR, "^=", 2) \ 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_BIT_AND, "&=", 2) \ 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SHL, "<<=", 2) \ 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SAR, ">>=", 2) \ 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SHR, ">>>=", 2) \ 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_ADD, "+=", 2) \ 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_SUB, "-=", 2) \ 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_MUL, "*=", 2) \ 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_DIV, "/=", 2) \ 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ASSIGN_MOD, "%=", 2) \ 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Binary operators sorted by precedence. */ \ 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IsBinaryOp() relies on this block of enum values */ \ 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* being contiguous and sorted in the same order! */ \ 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(COMMA, ",", 1) \ 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(OR, "||", 4) \ 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(AND, "&&", 5) \ 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_OR, "|", 6) \ 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_XOR, "^", 7) \ 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_AND, "&", 8) \ 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SHL, "<<", 11) \ 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SAR, ">>", 11) \ 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SHR, ">>>", 11) \ 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ADD, "+", 12) \ 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(SUB, "-", 12) \ 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(MUL, "*", 13) \ 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(DIV, "/", 13) \ 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(MOD, "%", 13) \ 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Compare operators sorted by precedence. */ \ 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IsCompareOp() relies on this block of enum values */ \ 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* being contiguous and sorted in the same order! */ \ 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(EQ, "==", 9) \ 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NE, "!=", 9) \ 112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(EQ_STRICT, "===", 9) \ 113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NE_STRICT, "!==", 9) \ 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LT, "<", 10) \ 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(GT, ">", 10) \ 116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(LTE, "<=", 10) \ 117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(GTE, ">=", 10) \ 118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(INSTANCEOF, "instanceof", 10) \ 119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(IN, "in", 10) \ 120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Unary operators. */ \ 122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IsUnaryOp() relies on this block of enum values */ \ 123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* being contiguous and sorted in the same order! */ \ 124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NOT, "!", 0) \ 125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(BIT_NOT, "~", 0) \ 126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DELETE, "delete", 0) \ 127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(TYPEOF, "typeof", 0) \ 128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(VOID, "void", 0) \ 129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Keywords (ECMA-262, section 7.5.2, page 13). */ \ 131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(BREAK, "break", 0) \ 132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(CASE, "case", 0) \ 133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(CATCH, "catch", 0) \ 134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(CONTINUE, "continue", 0) \ 135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DEBUGGER, "debugger", 0) \ 136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DEFAULT, "default", 0) \ 137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* DELETE */ \ 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(DO, "do", 0) \ 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(ELSE, "else", 0) \ 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FINALLY, "finally", 0) \ 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FOR, "for", 0) \ 142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FUNCTION, "function", 0) \ 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(IF, "if", 0) \ 144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* IN */ \ 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* INSTANCEOF */ \ 146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(NEW, "new", 0) \ 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(RETURN, "return", 0) \ 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(SWITCH, "switch", 0) \ 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(THIS, "this", 0) \ 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(THROW, "throw", 0) \ 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(TRY, "try", 0) \ 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* TYPEOF */ \ 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(VAR, "var", 0) \ 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* VOID */ \ 155a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(WHILE, "while", 0) \ 156a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(WITH, "with", 0) \ 157a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 158a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Future reserved words (ECMA-262, section 7.5.3, page 14). */ \ 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(ABSTRACT, "abstract", 0) \ 160a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(BOOLEAN, "boolean", 0) \ 161a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(BYTE, "byte", 0) \ 162a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(CHAR, "char", 0) \ 163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(CLASS, "class", 0) \ 164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(CONST, "const", 0) \ 165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(DOUBLE, "double", 0) \ 166a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(ENUM, "enum", 0) \ 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(EXPORT, "export", 0) \ 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(EXTENDS, "extends", 0) \ 169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(FINAL, "final", 0) \ 170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(FLOAT, "float", 0) \ 171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(GOTO, "goto", 0) \ 172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(IMPLEMENTS, "implements", 0) \ 173a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(IMPORT, "import", 0) \ 174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(INT, "int", 0) \ 175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(INTERFACE, "interface", 0) \ 176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(LONG, "long", 0) \ 177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(NATIVE, "native", 0) \ 178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(PACKAGE, "package", 0) \ 179a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(PRIVATE, "private", 0) \ 180a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(PROTECTED, "protected", 0) \ 181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(PUBLIC, "public", 0) \ 182a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(SHORT, "short", 0) \ 183a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(STATIC, "static", 0) \ 184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(SUPER, "super", 0) \ 185a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(SYNCHRONIZED, "synchronized", 0) \ 186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(THROWS, "throws", 0) \ 187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(TRANSIENT, "transient", 0) \ 188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block F(VOLATILE, "volatile", 0) \ 189a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 190a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Literals (ECMA-262, section 7.8, page 16). */ \ 191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(NULL_LITERAL, "null", 0) \ 192a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(TRUE_LITERAL, "true", 0) \ 193a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block K(FALSE_LITERAL, "false", 0) \ 194a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(NUMBER, NULL, 0) \ 195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(STRING, NULL, 0) \ 196a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 197a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Identifiers (not keywords or future reserved words). */ \ 198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(IDENTIFIER, NULL, 0) \ 199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Illegal token - not able to scan. */ \ 201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(ILLEGAL, "ILLEGAL", 0) \ 202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block \ 203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block /* Scanner-internal use only. */ \ 204a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block T(WHITESPACE, NULL, 0) 205a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 207a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass Token { 208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // All token values. 210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define T(name, string, precedence) name, 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block enum Value { 212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block TOKEN_LIST(T, T, IGNORE_TOKEN) 213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block NUM_TOKENS 214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 215a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#undef T 216a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Returns a string corresponding to the C++ token name 218a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (e.g. "LT" for the token LT). 219a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const char* Name(Value tok) { 220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(0 <= tok && tok < NUM_TOKENS); 221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return name_[tok]; 222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 223a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 224a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Predicates 225bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch static bool IsKeyword(Value tok) { 226bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch return token_type[tok] == 'K'; 227bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch } 228bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsAssignmentOp(Value tok) { 230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return INIT_VAR <= tok && tok <= ASSIGN_MOD; 231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 232a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 233a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsBinaryOp(Value op) { 234a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return COMMA <= op && op <= MOD; 235a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 236a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 237a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsCompareOp(Value op) { 238a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return EQ <= op && op <= IN; 239a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 240a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 241b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static bool IsOrderedCompareOp(Value op) { 242b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return op == LT || op == LTE || op == GT || op == GTE; 243b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 244b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 245b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static Value NegateCompareOp(Value op) { 246b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(IsCompareOp(op)); 247b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch switch (op) { 248b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ: return NE; 249b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case NE: return EQ; 250b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ_STRICT: return NE_STRICT; 251b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LT: return GTE; 252b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GT: return LTE; 253b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LTE: return GT; 254b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GTE: return LT; 255b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch default: 256b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return op; 257b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 258b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 259b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 260b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch static Value InvertCompareOp(Value op) { 261b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch ASSERT(IsCompareOp(op)); 262b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch switch (op) { 263b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ: return NE; 264b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case NE: return EQ; 265b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case EQ_STRICT: return NE_STRICT; 266b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LT: return GT; 267b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GT: return LT; 268b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case LTE: return GTE; 269b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch case GTE: return LTE; 270b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch default: 271b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch return op; 272b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 273b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch } 274b0fe1620dcb4135ac3ab2d66ff93072373911299Ben Murdoch 275a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsBitOp(Value op) { 276a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (BIT_OR <= op && op <= SHR) || op == BIT_NOT; 277a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 278a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 279a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsUnaryOp(Value op) { 280a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return (NOT <= op && op <= VOID) || op == ADD || op == SUB; 281a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 282a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 283a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static bool IsCountOp(Value op) { 284a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return op == INC || op == DEC; 285a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 286a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static bool IsShiftOp(Value op) { 28880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return (SHL <= op) && (op <= SHR); 28980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 29080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 291a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Returns a string corresponding to the JS token string 292a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // (.e., "<" for the token LT) or NULL if the token doesn't 293a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // have a (unique) string (e.g. an IDENTIFIER). 294a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const char* String(Value tok) { 295a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(0 <= tok && tok < NUM_TOKENS); 296a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return string_[tok]; 297a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 298a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 299a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Returns the precedence > 0 for binary and compare 300a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // operators; returns 0 otherwise. 301a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static int Precedence(Value tok) { 302a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(0 <= tok && tok < NUM_TOKENS); 303a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return precedence_[tok]; 304a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 305a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 306a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block private: 307a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const char* name_[NUM_TOKENS]; 308a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static const char* string_[NUM_TOKENS]; 309a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static int8_t precedence_[NUM_TOKENS]; 310bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch static const char token_type[NUM_TOKENS]; 311a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 312a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 313a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 314a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 315a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // V8_TOKEN_H_ 316