[generators] Desugar yield*.

src/ast/prettyprinter.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/prettyprinter.h"
 
 #include <stdarg.h>
 
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/scopes.h"
@@ skipping 1562 matching lines @@
 
 
 void AstPrinter::VisitAssignment(Assignment* node) {
   IndentedScope indent(this, Token::Name(node->op()), node->position());
   Visit(node->target());
   Visit(node->value());
 }
 
 
 void AstPrinter::VisitYield(Yield* node) {
-  IndentedScope indent(this, "YIELD", node->position());
+  EmbeddedVector<char, 128> buf;
+  SNPrintF(buf, "YIELD (kind %d)", node->yield_kind());
+  IndentedScope indent(this, buf.start(), node->position());
   Visit(node->expression());
 }
 
 
 void AstPrinter::VisitThrow(Throw* node) {
   IndentedScope indent(this, "THROW", node->position());
   Visit(node->exception());
 }
 
 
@@ skipping 95 matching lines @@
 void AstPrinter::VisitRewritableAssignmentExpression(
     RewritableAssignmentExpression* node) {
   Visit(node->expression());
 }
 
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8