Minor cleanups & trivial refactoring related to Ast.

src/ast.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_H_
 #define V8_AST_H_
 
 #include "v8.h"
 
 #include "assembler.h"
@@ skipping 1334 matching lines @@
     return Handle<String>::cast(value_);
   }
 
   virtual bool ToBooleanIsTrue() const V8_OVERRIDE {
     return value_->BooleanValue();
   }
   virtual bool ToBooleanIsFalse() const V8_OVERRIDE {
     return !value_->BooleanValue();
   }
 
-  // Identity testers.
-  bool IsNull() const {
-    ASSERT(!value_.is_null());
-    return value_->IsNull();
-  }
-  bool IsTrue() const {
-    ASSERT(!value_.is_null());
-    return value_->IsTrue();
-  }
-  bool IsFalse() const {
-    ASSERT(!value_.is_null());
-    return value_->IsFalse();
-  }
-
   Handle<Object> value() const { return value_; }
 
   // Support for using Literal as a HashMap key. NOTE: Currently, this works
   // only for string and number literals!
   uint32_t Hash() { return ToString()->Hash(); }
 
   static bool Match(void* literal1, void* literal2) {
     Handle<String> s1 = static_cast<Literal*>(literal1)->ToString();
     Handle<String> s2 = static_cast<Literal*>(literal2)->ToString();
     return String::Equals(s1, s2);
@@ skipping 1969 matching lines @@
 
  private:
   Zone* zone_;
   Visitor visitor_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_