Cleanup of contexts in the full code generator.

src/ast.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 154 matching lines @@
   void set_statement_pos(int statement_pos) { statement_pos_ = statement_pos; }
   int statement_pos() const { return statement_pos_; }
 
  private:
   int statement_pos_;
 };
 
 
 class Expression: public AstNode {
  public:
-  enum Context {
-    // Not assigned a context yet, or else will not be visited during
-    // code generation.
-    kUninitialized,
-    // Evaluated for its side effects.
-    kEffect,
-    // Evaluated for its value (and side effects).
-    kValue,
-    // Evaluated for control flow (and side effects).
-    kTest
-  };
-
   Expression() : bitfields_(0) {}
 
   virtual Expression* AsExpression()  { return this; }
 
   virtual bool IsTrivial() { return false; }
   virtual bool IsValidLeftHandSide() { return false; }
 
   // Symbols that cannot be parsed as array indices are considered property
   // names.  We do not treat symbols that can be array indexes as property
   // names because [] for string objects is handled only by keyed ICs.
@@ skipping 1729 matching lines @@
   AST_NODE_LIST(DEF_VISIT)
 #undef DEF_VISIT
 
  private:
   bool stack_overflow_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_