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      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.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 class AstExpressionRewriter : public AstVisitor {
     21  public:
     22   explicit AstExpressionRewriter(Isolate* isolate) : AstVisitor() {
     23     InitializeAstRewriter(isolate);
     24   }
     25   explicit AstExpressionRewriter(uintptr_t stack_limit) : AstVisitor() {
     26     InitializeAstRewriter(stack_limit);
     27   }
     28   ~AstExpressionRewriter() override {}
     29 
     30   void VisitDeclarations(ZoneList<Declaration*>* declarations) override;
     31   void VisitStatements(ZoneList<Statement*>* statements) override;
     32   void VisitExpressions(ZoneList<Expression*>* expressions) override;
     33 
     34   virtual void VisitObjectLiteralProperty(ObjectLiteralProperty* property);
     35 
     36  protected:
     37   virtual bool RewriteExpression(Expression* expr) = 0;
     38 
     39  private:
     40   DEFINE_AST_REWRITER_SUBCLASS_MEMBERS();
     41 
     42 #define DECLARE_VISIT(type) void Visit##type(type* node) override;
     43   AST_NODE_LIST(DECLARE_VISIT)
     44 #undef DECLARE_VISIT
     45 
     46   DISALLOW_COPY_AND_ASSIGN(AstExpressionRewriter);
     47 };
     48 
     49 }  // namespace internal
     50 }  // namespace v8
     51 
     52 #endif  // V8_AST_AST_EXPRESSION_REWRITER_H_
     53