[es7] implement |do| expressions proposal

src/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/prettyprinter.h"
 
 #include <stdarg.h>
 
 #include "src/ast-value-factory.h"
 #include "src/base/platform/platform.h"
@@ skipping 210 matching lines @@
   if (node->extends()) Find(node->extends());
   for (int i = 0; i < node->properties()->length(); i++) {
     Find(node->properties()->at(i)->value());
   }
 }
 
 
 void CallPrinter::VisitNativeFunctionLiteral(NativeFunctionLiteral* node) {}
 
 
+void CallPrinter::VisitDoExpression(DoExpression* node) { Find(node->block()); }
+
+
 void CallPrinter::VisitConditional(Conditional* node) {
   Find(node->condition());
   Find(node->then_expression());
   Find(node->else_expression());
 }
 
 
 void CallPrinter::VisitLiteral(Literal* node) {
   PrintLiteral(node->value(), true);
 }
@@ skipping 453 matching lines @@
 }
 
 
 void PrettyPrinter::VisitNativeFunctionLiteral(NativeFunctionLiteral* node) {
   Print("(");
   PrintLiteral(node->name(), false);
   Print(")");
 }
 
 
+void PrettyPrinter::VisitDoExpression(DoExpression* node) {
+  Print("(do {");
+  PrintStatements(node->block()->statements());
+  Print("})");
+}
+
+
 void PrettyPrinter::VisitConditional(Conditional* node) {
   Visit(node->condition());
   Print(" ? ");
   Visit(node->then_expression());
   Print(" : ");
   Visit(node->else_expression());
 }
 
 
 void PrettyPrinter::VisitLiteral(Literal* node) {
@@ skipping 704 matching lines @@
   }
 }
 
 
 void AstPrinter::VisitNativeFunctionLiteral(NativeFunctionLiteral* node) {
   IndentedScope indent(this, "NATIVE FUNC LITERAL", node->position());
   PrintLiteralIndented("NAME", node->name(), false);
 }
 
 
+void AstPrinter::VisitDoExpression(DoExpression* node) {
+  IndentedScope indent(this, "DO EXPRESSION", node->position());
+  PrintStatements(node->block()->statements());
+}
+
+
 void AstPrinter::VisitConditional(Conditional* node) {
   IndentedScope indent(this, "CONDITIONAL", node->position());
   PrintIndentedVisit("CONDITION", node->condition());
   PrintIndentedVisit("THEN", node->then_expression());
   PrintIndentedVisit("ELSE", node->else_expression());
 }
 
 
 // TODO(svenpanne) Start with IndentedScope.
 void AstPrinter::VisitLiteral(Literal* node) {
@@ skipping 175 matching lines @@
 
 void AstPrinter::VisitSuperCallReference(SuperCallReference* node) {
   IndentedScope indent(this, "SUPER-CALL-REFERENCE", node->position());
 }
 
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8