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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_EXPRESSION_TYPE_COLLECTOR_H_
      6 #define V8_EXPRESSION_TYPE_COLLECTOR_H_
      7 
      8 #include "src/ast/ast-expression-visitor.h"
      9 
     10 namespace v8 {
     11 namespace internal {
     12 
     13 class AstTypeBounds;
     14 
     15 // A Visitor over an AST that collects a human readable string summarizing
     16 // structure and types. Used for testing of the typing information attached
     17 // to the expression nodes of an AST.
     18 
     19 struct ExpressionTypeEntry {
     20   int depth;
     21   const char* kind;
     22   const AstRawString* name;
     23   Bounds bounds;
     24 };
     25 
     26 class ExpressionTypeCollector : public AstExpressionVisitor {
     27  public:
     28   ExpressionTypeCollector(Isolate* isolate, FunctionLiteral* root,
     29                           const AstTypeBounds* bounds,
     30                           ZoneVector<ExpressionTypeEntry>* dst);
     31   void Run();
     32 
     33  protected:
     34   void VisitExpression(Expression* expression);
     35 
     36  private:
     37   const AstTypeBounds* bounds_;
     38   ZoneVector<ExpressionTypeEntry>* result_;
     39 };
     40 }  // namespace internal
     41 }  // namespace v8
     42 
     43 #endif  // V8_EXPRESSION_TYPE_COLLECTOR_H_
     44