Initial implementation of top-level compilation of expressions in test...

src/ast.h

 // Copyright 2006-2008 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 146 matching lines @@
  private:
   int statement_pos_;
 };
 
 
 class Expression: public AstNode {
  public:
   enum Context {
     kUninitialized,
     kEffect,
-    kValue
+    kValue,
+    kTest,
+    kValueTest,

[William Hesse, 2009/10/30 12:09:39]

Bigendian nomenclature: effect(true) ## effect(false).  Comment to that effect.

[Kevin Millikin (Chromium), 2009/10/30 13:45:53]

There'll be a big comment here explaining the whole thing, and another in the
implementation (currently sharing the code gen selector, but not necessarily
forever).

While things are evolving, I'll try to keep it simple.

+    kTestValue
   };
 
   Expression() : context_(kUninitialized) {}
 
   virtual Expression* AsExpression()  { return this; }
 
   virtual bool IsValidJSON() { return false; }
   virtual bool IsValidLeftHandSide() { return false; }
 
   // Mark the expression as being compiled as an expression
@@ skipping 1589 matching lines @@
 #undef DEF_VISIT
 
  private:
   bool stack_overflow_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_