[generators] Implement Generator.prototype.return.

src/full-codegen/full-codegen.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/full-codegen/full-codegen.h"
 
 #include "src/ast/ast.h"
 #include "src/ast/ast-numbering.h"
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopeinfo.h"
@@ skipping 615 matching lines @@
 }
 
 
 void FullCodeGenerator::EmitGeneratorNext(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
   EmitGeneratorResume(args->at(0), args->at(1), JSGeneratorObject::NEXT);
 }
 
 
+void FullCodeGenerator::EmitGeneratorReturn(CallRuntime* expr) {
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK(args->length() == 2);
+  EmitGeneratorResume(args->at(0), args->at(1), JSGeneratorObject::RETURN);
+}
+
+
 void FullCodeGenerator::EmitGeneratorThrow(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
   EmitGeneratorResume(args->at(0), args->at(1), JSGeneratorObject::THROW);
 }
 
 
 void FullCodeGenerator::EmitDebugBreakInOptimizedCode(CallRuntime* expr) {
   context()->Plug(handle(Smi::FromInt(0), isolate()));
 }
@@ skipping 1056 matching lines @@
   return var->mode() == CONST_LEGACY || var->scope()->is_nonlinear() ||
          var->initializer_position() >= proxy->position();
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8