[es6] Correct parsing of regular expression literal flags.

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 229 matching lines @@
 
 void CallPrinter::VisitLiteral(Literal* node) {
   PrintLiteral(node->value(), true);
 }
 
 
 void CallPrinter::VisitRegExpLiteral(RegExpLiteral* node) {
   Print("/");
   PrintLiteral(node->pattern(), false);
   Print("/");
-  PrintLiteral(node->flags(), false);
+  if (node->flags() & RegExp::kGlobal) Print("g");
+  if (node->flags() & RegExp::kIgnoreCase) Print("i");
+  if (node->flags() & RegExp::kMultiline) Print("m");
+  if (node->flags() & RegExp::kUnicode) Print("u");
+  if (node->flags() & RegExp::kSticky) Print("y");
 }
 
 
 void CallPrinter::VisitObjectLiteral(ObjectLiteral* node) {
   for (int i = 0; i < node->properties()->length(); i++) {
     Find(node->properties()->at(i)->value());
   }
 }
 
 
@@ skipping 470 matching lines @@
 
 void PrettyPrinter::VisitLiteral(Literal* node) {
   PrintLiteral(node->value(), true);
 }
 
 
 void PrettyPrinter::VisitRegExpLiteral(RegExpLiteral* node) {
   Print(" RegExp(");
   PrintLiteral(node->pattern(), false);
   Print(",");
-  PrintLiteral(node->flags(), false);
+  if (node->flags() & RegExp::kGlobal) Print("g");
+  if (node->flags() & RegExp::kIgnoreCase) Print("i");
+  if (node->flags() & RegExp::kMultiline) Print("m");
+  if (node->flags() & RegExp::kUnicode) Print("u");
+  if (node->flags() & RegExp::kSticky) Print("y");
   Print(") ");
 }
 
 
 void PrettyPrinter::VisitObjectLiteral(ObjectLiteral* node) {
   Print("{ ");
   for (int i = 0; i < node->properties()->length(); i++) {
     if (i != 0) Print(",");
     PrintObjectLiteralProperty(node->properties()->at(i));
   }
@@ skipping 711 matching lines @@
   PrintLiteralIndented("LITERAL", node->value(), true);
 }
 
 
 void AstPrinter::VisitRegExpLiteral(RegExpLiteral* node) {
   IndentedScope indent(this, "REGEXP LITERAL", node->position());
   EmbeddedVector<char, 128> buf;
   SNPrintF(buf, "literal_index = %d\n", node->literal_index());
   PrintIndented(buf.start());
   PrintLiteralIndented("PATTERN", node->pattern(), false);
-  PrintLiteralIndented("FLAGS", node->flags(), false);
+  int i = 0;
+  if (node->flags() & RegExp::kGlobal) buf[i++] = 'g';
+  if (node->flags() & RegExp::kIgnoreCase) buf[i++] = 'i';
+  if (node->flags() & RegExp::kMultiline) buf[i++] = 'm';
+  if (node->flags() & RegExp::kUnicode) buf[i++] = 'u';
+  if (node->flags() & RegExp::kSticky) buf[i++] = 'y';
+  buf[i] = '\0';
+  PrintIndented("FLAGS ");
+  Print(buf.start());
+  Print("\n");
 }
 
 
 void AstPrinter::VisitObjectLiteral(ObjectLiteral* node) {
   IndentedScope indent(this, "OBJ LITERAL", node->position());
   EmbeddedVector<char, 128> buf;
   SNPrintF(buf, "literal_index = %d\n", node->literal_index());
   PrintIndented(buf.start());
   PrintProperties(node->properties());
 }
@@ skipping 154 matching lines @@
 
 void AstPrinter::VisitSuperCallReference(SuperCallReference* node) {
   IndentedScope indent(this, "SUPER-CALL-REFERENCE", node->position());
 }
 
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8