Introduce IsUndefined(Isolate*) and IsTheHole(Isolate*)

src/ast/prettyprinter.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_AST_PRETTYPRINTER_H_
 #define V8_AST_PRETTYPRINTER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/base/compiler-specific.h"
@@ skipping 14 matching lines @@
 
   void Find(AstNode* node, bool print = false);
 
 // Individual nodes
 #define DECLARE_VISIT(type) void Visit##type(type* node) override;
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
  private:
   void Init();
+  Isolate* isolate_;
   char* output_;  // output string buffer
   int size_;      // output_ size
   int pos_;       // current printing position
   int position_;  // position of ast node to print
   bool found_;
   bool done_;
   bool is_builtin_;
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
 
@@ skipping 22 matching lines @@
 
   // Print a node to stdout.
   static void PrintOut(Isolate* isolate, AstNode* node);
 
   // Individual nodes
 #define DECLARE_VISIT(type) void Visit##type(type* node) override;
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
  private:
+  Isolate* isolate_;
   char* output_;  // output string buffer
   int size_;  // output_ size
   int pos_;  // current printing position
 
  protected:
   void Init();
   const char* Output() const { return output_; }
 
   virtual void PrintStatements(ZoneList<Statement*>* statements);
   void PrintLabels(ZoneList<const AstRawString*>* labels);
@@ skipping 48 matching lines @@
 
   int indent_;
 };
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_PRETTYPRINTER_H_