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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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1305 protected: | 1305 protected: |
1306 EmptyStatement() {} | 1306 EmptyStatement() {} |
1307 }; | 1307 }; |
1308 | 1308 |
1309 | 1309 |
1310 class Literal: public Expression { | 1310 class Literal: public Expression { |
1311 public: | 1311 public: |
1312 DECLARE_NODE_TYPE(Literal) | 1312 DECLARE_NODE_TYPE(Literal) |
1313 | 1313 |
1314 virtual bool IsPropertyName() { | 1314 virtual bool IsPropertyName() { |
1315 if (handle_->IsInternalizedString()) { | 1315 if (value_->IsInternalizedString()) { |
1316 uint32_t ignored; | 1316 uint32_t ignored; |
1317 return !String::cast(*handle_)->AsArrayIndex(&ignored); | 1317 return !String::cast(*value_)->AsArrayIndex(&ignored); |
1318 } | 1318 } |
1319 return false; | 1319 return false; |
1320 } | 1320 } |
1321 | 1321 |
1322 Handle<String> AsPropertyName() { | 1322 Handle<String> AsPropertyName() { |
1323 ASSERT(IsPropertyName()); | 1323 ASSERT(IsPropertyName()); |
1324 return Handle<String>::cast(handle_); | 1324 return Handle<String>::cast(value_); |
1325 } | 1325 } |
1326 | 1326 |
1327 virtual bool ToBooleanIsTrue() { return handle_->BooleanValue(); } | 1327 virtual bool ToBooleanIsTrue() { return value_->BooleanValue(); } |
1328 virtual bool ToBooleanIsFalse() { return !handle_->BooleanValue(); } | 1328 virtual bool ToBooleanIsFalse() { return !value_->BooleanValue(); } |
1329 | 1329 |
1330 // Identity testers. | 1330 // Identity testers. |
1331 bool IsNull() const { | 1331 bool IsNull() const { |
1332 ASSERT(!handle_.is_null()); | 1332 ASSERT(!value_.is_null()); |
1333 return handle_->IsNull(); | 1333 return value_->IsNull(); |
1334 } | 1334 } |
1335 bool IsTrue() const { | 1335 bool IsTrue() const { |
1336 ASSERT(!handle_.is_null()); | 1336 ASSERT(!value_.is_null()); |
1337 return handle_->IsTrue(); | 1337 return value_->IsTrue(); |
1338 } | 1338 } |
1339 bool IsFalse() const { | 1339 bool IsFalse() const { |
1340 ASSERT(!handle_.is_null()); | 1340 ASSERT(!value_.is_null()); |
1341 return handle_->IsFalse(); | 1341 return value_->IsFalse(); |
1342 } | 1342 } |
1343 | 1343 |
1344 Handle<Object> handle() const { return handle_; } | 1344 Handle<Object> value() const { return value_; } |
1345 | 1345 |
1346 // Support for using Literal as a HashMap key. NOTE: Currently, this works | 1346 // Support for using Literal as a HashMap key. NOTE: Currently, this works |
1347 // only for string and number literals! | 1347 // only for string and number literals! |
1348 uint32_t Hash() { return ToString()->Hash(); } | 1348 uint32_t Hash() { return ToString()->Hash(); } |
1349 | 1349 |
1350 static bool Match(void* literal1, void* literal2) { | 1350 static bool Match(void* literal1, void* literal2) { |
1351 Handle<String> s1 = static_cast<Literal*>(literal1)->ToString(); | 1351 Handle<String> s1 = static_cast<Literal*>(literal1)->ToString(); |
1352 Handle<String> s2 = static_cast<Literal*>(literal2)->ToString(); | 1352 Handle<String> s2 = static_cast<Literal*>(literal2)->ToString(); |
1353 return s1->Equals(*s2); | 1353 return s1->Equals(*s2); |
1354 } | 1354 } |
1355 | 1355 |
1356 TypeFeedbackId LiteralFeedbackId() const { return reuse(id()); } | 1356 TypeFeedbackId LiteralFeedbackId() const { return reuse(id()); } |
1357 | 1357 |
1358 protected: | 1358 protected: |
1359 Literal(Isolate* isolate, Handle<Object> handle) | 1359 Literal(Isolate* isolate, Handle<Object> value) |
1360 : Expression(isolate), | 1360 : Expression(isolate), |
1361 handle_(handle) { } | 1361 value_(value) { } |
1362 | 1362 |
1363 private: | 1363 private: |
1364 Handle<String> ToString(); | 1364 Handle<String> ToString(); |
1365 | 1365 |
1366 Handle<Object> handle_; | 1366 Handle<Object> value_; |
1367 }; | 1367 }; |
1368 | 1368 |
1369 | 1369 |
1370 // Base class for literals that needs space in the corresponding JSFunction. | 1370 // Base class for literals that needs space in the corresponding JSFunction. |
1371 class MaterializedLiteral: public Expression { | 1371 class MaterializedLiteral: public Expression { |
1372 public: | 1372 public: |
1373 virtual MaterializedLiteral* AsMaterializedLiteral() { return this; } | 1373 virtual MaterializedLiteral* AsMaterializedLiteral() { return this; } |
1374 | 1374 |
1375 int literal_index() { return literal_index_; } | 1375 int literal_index() { return literal_index_; } |
1376 | 1376 |
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3208 private: | 3208 private: |
3209 Isolate* isolate_; | 3209 Isolate* isolate_; |
3210 Zone* zone_; | 3210 Zone* zone_; |
3211 Visitor visitor_; | 3211 Visitor visitor_; |
3212 }; | 3212 }; |
3213 | 3213 |
3214 | 3214 |
3215 } } // namespace v8::internal | 3215 } } // namespace v8::internal |
3216 | 3216 |
3217 #endif // V8_AST_H_ | 3217 #endif // V8_AST_H_ |
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