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 3 // found in the LICENSE file. 4 5 #ifndef V8_AST_AST_EXPRESSION_REWRITER_H_ 6 #define V8_AST_AST_EXPRESSION_REWRITER_H_ 7 8 #include "src/allocation.h" 9 #include "src/ast/ast.h" 10 #include "src/ast/scopes.h" 11 #include "src/type-info.h" 12 #include "src/zone/zone.h" 13 14 namespace v8 { 15 namespace internal { 16 17 // A rewriting Visitor over a CompilationInfo's AST that invokes 18 // VisitExpression on each expression node. 19 20 // This AstVistor is not final, and provides the AstVisitor methods as virtual 21 // methods so they can be specialized by subclasses. 22 class AstExpressionRewriter : public AstVisitor<AstExpressionRewriter> { 23 public: 24 explicit AstExpressionRewriter(Isolate* isolate) { 25 InitializeAstRewriter(isolate); 26 } 27 explicit AstExpressionRewriter(uintptr_t stack_limit) { 28 InitializeAstRewriter(stack_limit); 29 } 30 virtual ~AstExpressionRewriter() {} 31 32 virtual void VisitDeclarations(Declaration::List* declarations); 33 virtual void VisitStatements(ZoneList<Statement*>* statements); 34 virtual void VisitExpressions(ZoneList<Expression*>* expressions); 35 36 virtual void VisitLiteralProperty(LiteralProperty* property); 37 38 protected: 39 virtual bool RewriteExpression(Expression* expr) = 0; 40 41 private: 42 DEFINE_AST_REWRITER_SUBCLASS_MEMBERS(); 43 44 #define DECLARE_VISIT(type) virtual void Visit##type(type* node); 45 AST_NODE_LIST(DECLARE_VISIT) 46 #undef DECLARE_VISIT 47 48 DISALLOW_COPY_AND_ASSIGN(AstExpressionRewriter); 49 }; 50 51 } // namespace internal 52 } // namespace v8 53 54 #endif // V8_AST_AST_EXPRESSION_REWRITER_H_ 55
