[es7] implement |do| expressions proposal

src/ast.cc

 // 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.
 
 #include "src/ast.h"
 
 #include <cmath>  // For isfinite.
 #include "src/builtins.h"
 #include "src/code-stubs.h"
 #include "src/contexts.h"
@@ skipping 1110 matching lines @@
 
 // static
 bool Literal::Match(void* literal1, void* literal2) {
   const AstValue* x = static_cast<Literal*>(literal1)->raw_value();
   const AstValue* y = static_cast<Literal*>(literal2)->raw_value();
   return (x->IsString() && y->IsString() && x->AsString() == y->AsString()) ||
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
 
+Variable* AstNodeFactory::NewTemporaryVar(Scope* scope,

[rossberg, 2015/10/12 13:52:39]

This function seems rather redundant.

[caitp (gmail), 2015/10/12 18:22:59]

Yeah, it's gone. It's more useful to let the NewDoExpression caller pass in the
result variable, since internal uses will likely want to provide their own
instead of allocating yet another temporary.

+                                          const AstRawString* name) {
+  return scope->NewTemporary(name);
+}
+
+
 }  // namespace internal
 }  // namespace v8