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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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213 #undef T | 213 #undef T |
214 | 214 |
215 // Returns a string corresponding to the C++ token name | 215 // Returns a string corresponding to the C++ token name |
216 // (e.g. "LT" for the token LT). | 216 // (e.g. "LT" for the token LT). |
217 static const char* Name(Value tok) { | 217 static const char* Name(Value tok) { |
218 ASSERT(0 <= tok && tok < NUM_TOKENS); | 218 ASSERT(0 <= tok && tok < NUM_TOKENS); |
219 return name_[tok]; | 219 return name_[tok]; |
220 } | 220 } |
221 | 221 |
222 // Predicates | 222 // Predicates |
223 static bool IsKeyword(Value tok) { | |
224 return token_type[tok] == 'K'; | |
225 } | |
226 | |
227 static bool IsAssignmentOp(Value tok) { | 223 static bool IsAssignmentOp(Value tok) { |
228 return INIT_VAR <= tok && tok <= ASSIGN_MOD; | 224 return INIT_VAR <= tok && tok <= ASSIGN_MOD; |
229 } | 225 } |
230 | 226 |
231 static bool IsBinaryOp(Value op) { | 227 static bool IsBinaryOp(Value op) { |
232 return COMMA <= op && op <= MOD; | 228 return COMMA <= op && op <= MOD; |
233 } | 229 } |
234 | 230 |
235 static bool IsCompareOp(Value op) { | 231 static bool IsCompareOp(Value op) { |
236 return EQ <= op && op <= IN; | 232 return EQ <= op && op <= IN; |
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260 // operators; returns 0 otherwise. | 256 // operators; returns 0 otherwise. |
261 static int Precedence(Value tok) { | 257 static int Precedence(Value tok) { |
262 ASSERT(0 <= tok && tok < NUM_TOKENS); | 258 ASSERT(0 <= tok && tok < NUM_TOKENS); |
263 return precedence_[tok]; | 259 return precedence_[tok]; |
264 } | 260 } |
265 | 261 |
266 private: | 262 private: |
267 static const char* name_[NUM_TOKENS]; | 263 static const char* name_[NUM_TOKENS]; |
268 static const char* string_[NUM_TOKENS]; | 264 static const char* string_[NUM_TOKENS]; |
269 static int8_t precedence_[NUM_TOKENS]; | 265 static int8_t precedence_[NUM_TOKENS]; |
270 static const char token_type[NUM_TOKENS]; | |
271 }; | 266 }; |
272 | 267 |
273 } } // namespace v8::internal | 268 } } // namespace v8::internal |
274 | 269 |
275 #endif // V8_TOKEN_H_ | 270 #endif // V8_TOKEN_H_ |
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