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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_PREPARSER_H | 5 #ifndef V8_PREPARSER_H |
6 #define V8_PREPARSER_H | 6 #define V8_PREPARSER_H |
7 | 7 |
8 #include "src/v8.h" | 8 #include "src/v8.h" |
9 | 9 |
10 #include "src/bailout-reason.h" | 10 #include "src/bailout-reason.h" |
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2213 Consume(Token::THIS); | 2213 Consume(Token::THIS); |
2214 if (is_strong(language_mode())) { | 2214 if (is_strong(language_mode())) { |
2215 // Constructors' usages of 'this' in strong mode are parsed separately. | 2215 // Constructors' usages of 'this' in strong mode are parsed separately. |
2216 // TODO(rossberg): this does not work with arrow functions yet. | 2216 // TODO(rossberg): this does not work with arrow functions yet. |
2217 if (i::IsConstructor(function_state_->kind())) { | 2217 if (i::IsConstructor(function_state_->kind())) { |
2218 ReportMessage("strong_constructor_this"); | 2218 ReportMessage("strong_constructor_this"); |
2219 *ok = false; | 2219 *ok = false; |
2220 break; | 2220 break; |
2221 } | 2221 } |
2222 } | 2222 } |
2223 scope_->RecordThisUsage(); | |
2224 result = this->ThisExpression(scope_, factory(), beg_pos); | 2223 result = this->ThisExpression(scope_, factory(), beg_pos); |
2225 break; | 2224 break; |
2226 } | 2225 } |
2227 | 2226 |
2228 case Token::NULL_LITERAL: | 2227 case Token::NULL_LITERAL: |
2229 case Token::TRUE_LITERAL: | 2228 case Token::TRUE_LITERAL: |
2230 case Token::FALSE_LITERAL: | 2229 case Token::FALSE_LITERAL: |
2231 BindingPatternUnexpectedToken(classifier); | 2230 BindingPatternUnexpectedToken(classifier); |
2232 Next(); | 2231 Next(); |
2233 result = | 2232 result = |
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3239 ExpressionClassifier* classifier, bool* ok) { | 3238 ExpressionClassifier* classifier, bool* ok) { |
3240 // InitializationExpression :: (strong mode) | 3239 // InitializationExpression :: (strong mode) |
3241 // 'this' '.' IdentifierName '=' AssignmentExpression | 3240 // 'this' '.' IdentifierName '=' AssignmentExpression |
3242 // 'this' '[' Expression ']' '=' AssignmentExpression | 3241 // 'this' '[' Expression ']' '=' AssignmentExpression |
3243 | 3242 |
3244 if (fni_ != NULL) fni_->Enter(); | 3243 if (fni_ != NULL) fni_->Enter(); |
3245 | 3244 |
3246 Consume(Token::THIS); | 3245 Consume(Token::THIS); |
3247 int pos = position(); | 3246 int pos = position(); |
3248 function_state_->set_this_location(scanner()->location()); | 3247 function_state_->set_this_location(scanner()->location()); |
3249 scope_->RecordThisUsage(); | |
3250 ExpressionT this_expr = this->ThisExpression(scope_, factory(), pos); | 3248 ExpressionT this_expr = this->ThisExpression(scope_, factory(), pos); |
3251 | 3249 |
3252 ExpressionT left = this->EmptyExpression(); | 3250 ExpressionT left = this->EmptyExpression(); |
3253 switch (peek()) { | 3251 switch (peek()) { |
3254 case Token::LBRACK: { | 3252 case Token::LBRACK: { |
3255 Consume(Token::LBRACK); | 3253 Consume(Token::LBRACK); |
3256 int pos = position(); | 3254 int pos = position(); |
3257 ExpressionT index = this->ParseExpression(true, classifier, CHECK_OK); | 3255 ExpressionT index = this->ParseExpression(true, classifier, CHECK_OK); |
3258 left = factory()->NewProperty(this_expr, index, pos); | 3256 left = factory()->NewProperty(this_expr, index, pos); |
3259 if (fni_ != NULL) { | 3257 if (fni_ != NULL) { |
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3845 *ok = false; | 3843 *ok = false; |
3846 return; | 3844 return; |
3847 } | 3845 } |
3848 has_seen_constructor_ = true; | 3846 has_seen_constructor_ = true; |
3849 return; | 3847 return; |
3850 } | 3848 } |
3851 } | 3849 } |
3852 } } // v8::internal | 3850 } } // v8::internal |
3853 | 3851 |
3854 #endif // V8_PREPARSER_H | 3852 #endif // V8_PREPARSER_H |
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