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| 1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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 #include "src/ast/ast.h" | 5 #include "src/ast/ast.h" |
| 6 #include "src/ast/ast-expression-rewriter.h" | 6 #include "src/ast/ast-expression-rewriter.h" |
| 7 | 7 |
| 8 namespace v8 { | 8 namespace v8 { |
| 9 namespace internal { | 9 namespace internal { |
| 10 | 10 |
| 11 // ---------------------------------------------------------------------------- | 11 // ---------------------------------------------------------------------------- |
| 12 // Implementation of AstExpressionRewriter | 12 // Implementation of AstExpressionRewriter |
| 13 // The AST is traversed but no actual rewriting takes place, unless the | 13 // The AST is traversed but no actual rewriting takes place, unless the |
| 14 // Visit methods are overriden in subclasses. | 14 // Visit methods are overriden in subclasses. |
| 15 | 15 |
| 16 #define REWRITE_THIS(node) \ | 16 #define REWRITE_THIS(node) \ |
| 17 do { \ | 17 do { \ |
| 18 if (!RewriteExpression(node)) return; \ | 18 if (!RewriteExpression(node)) return; \ |
| 19 } while (false) | 19 } while (false) |
| 20 #define NOTHING() DCHECK_NULL(replacement_) | 20 #define NOTHING() DCHECK_NULL(replacement_) |
| 21 | 21 |
| 22 | 22 |
| 23 void AstExpressionRewriter::VisitDeclarations( | 23 void AstExpressionRewriter::VisitDeclarations( |
| 24 ZoneList<Declaration*>* declarations) { | 24 ZoneList<Declaration*>* declarations) { |
| 25 for (int i = 0; i < declarations->length(); i++) { | 25 for (int i = 0; i < declarations->length(); i++) { |
| 26 AST_REWRITE_LIST_ELEMENT(Declaration, declarations, i); | 26 AST_REWRITE_LIST_ELEMENT(Declaration, declarations, i); |
| 27 } | 27 } |
| 28 } | 28 } |
| 29 | 29 |
| 30 | 30 void AstExpressionRewriter::VisitStatements( |
| 31 void AstExpressionRewriter::VisitStatements(ZoneList<Statement*>* statements) { | 31 ZoneChunkList<Statement*>* statements) { |
| 32 for (int i = 0; i < statements->length(); i++) { | 32 for (auto it = statements->begin(); it != statements->end(); it++) { |
| 33 AST_REWRITE_LIST_ELEMENT(Statement, statements, i); | 33 AST_REWRITE(Statement, *it, *it = replacement); |
| 34 // Not stopping when a jump statement is found. | 34 // Not stopping when a jump statement is found. |
| 35 } | 35 } |
| 36 } | 36 } |
| 37 | 37 |
| 38 | 38 |
| 39 void AstExpressionRewriter::VisitExpressions( | 39 void AstExpressionRewriter::VisitExpressions( |
| 40 ZoneList<Expression*>* expressions) { | 40 ZoneList<Expression*>* expressions) { |
| 41 for (int i = 0; i < expressions->length(); i++) { | 41 for (int i = 0; i < expressions->length(); i++) { |
| 42 // The variable statement visiting code may pass NULL expressions | 42 // The variable statement visiting code may pass NULL expressions |
| 43 // to this code. Maybe this should be handled by introducing an | 43 // to this code. Maybe this should be handled by introducing an |
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| 180 | 180 |
| 181 | 181 |
| 182 void AstExpressionRewriter::VisitDebuggerStatement(DebuggerStatement* node) { | 182 void AstExpressionRewriter::VisitDebuggerStatement(DebuggerStatement* node) { |
| 183 NOTHING(); | 183 NOTHING(); |
| 184 } | 184 } |
| 185 | 185 |
| 186 | 186 |
| 187 void AstExpressionRewriter::VisitFunctionLiteral(FunctionLiteral* node) { | 187 void AstExpressionRewriter::VisitFunctionLiteral(FunctionLiteral* node) { |
| 188 REWRITE_THIS(node); | 188 REWRITE_THIS(node); |
| 189 VisitDeclarations(node->scope()->declarations()); | 189 VisitDeclarations(node->scope()->declarations()); |
| 190 ZoneList<Statement*>* body = node->body(); | 190 ZoneChunkList<Statement*>* body = node->body(); |
| 191 if (body != nullptr) VisitStatements(body); | 191 if (body != nullptr) VisitStatements(body); |
| 192 } | 192 } |
| 193 | 193 |
| 194 | 194 |
| 195 void AstExpressionRewriter::VisitClassLiteral(ClassLiteral* node) { | 195 void AstExpressionRewriter::VisitClassLiteral(ClassLiteral* node) { |
| 196 REWRITE_THIS(node); | 196 REWRITE_THIS(node); |
| 197 // Not visiting `class_variable_proxy_`. | 197 // Not visiting `class_variable_proxy_`. |
| 198 if (node->extends() != nullptr) { | 198 if (node->extends() != nullptr) { |
| 199 AST_REWRITE_PROPERTY(Expression, node, extends); | 199 AST_REWRITE_PROPERTY(Expression, node, extends); |
| 200 } | 200 } |
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| 383 | 383 |
| 384 void AstExpressionRewriter::VisitRewritableExpression( | 384 void AstExpressionRewriter::VisitRewritableExpression( |
| 385 RewritableExpression* node) { | 385 RewritableExpression* node) { |
| 386 REWRITE_THIS(node); | 386 REWRITE_THIS(node); |
| 387 AST_REWRITE(Expression, node->expression(), node->Rewrite(replacement)); | 387 AST_REWRITE(Expression, node->expression(), node->Rewrite(replacement)); |
| 388 } | 388 } |
| 389 | 389 |
| 390 | 390 |
| 391 } // namespace internal | 391 } // namespace internal |
| 392 } // namespace v8 | 392 } // namespace v8 |
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