Sync preparser and parser wrt syntax error in switch..case.

src/preparser.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 584 matching lines @@
   Expect(i::Token::LPAREN, CHECK_OK);
   ParseExpression(true, CHECK_OK);
   Expect(i::Token::RPAREN, CHECK_OK);
 
   Expect(i::Token::LBRACE, CHECK_OK);
   i::Token::Value token = peek();
   while (token != i::Token::RBRACE) {
     if (token == i::Token::CASE) {
       Expect(i::Token::CASE, CHECK_OK);
       ParseExpression(true, CHECK_OK);
       Expect(i::Token::COLON, CHECK_OK);

[Jakob Kummerow, 2012/07/10 18:46:08]

nit: The "Expect(...COLON...)" line is in both the if and the else blocks, so
you could move it out and put it after line 609, but I don't mind either way.

-    } else if (token == i::Token::DEFAULT) {
+    } else {
       Expect(i::Token::DEFAULT, CHECK_OK);
       Expect(i::Token::COLON, CHECK_OK);
-    } else {
-      ParseStatement(CHECK_OK);
     }
     token = peek();
+    while (token != i::Token::CASE &&
+           token != i::Token::DEFAULT &&
+           token != i::Token::RBRACE) {
+      ParseStatement(CHECK_OK);
+      token = peek();
+    }
   }
   Expect(i::Token::RBRACE, ok);
   return Statement::Default();
 }
 
 
 PreParser::Statement PreParser::ParseDoWhileStatement(bool* ok) {
   // DoStatement ::
   //   'do' Statement 'while' '(' Expression ')' ';'
 
@@ skipping 1154 matching lines @@
       backing_store_.Add(static_cast<byte>((ascii_length >> 14) | 0x80u));
     }
     backing_store_.Add(static_cast<byte>((ascii_length >> 7) | 0x80u));
   }
   backing_store_.Add(static_cast<byte>(ascii_length & 0x7f));
 
   backing_store_.AddBlock(bytes);
   return backing_store_.EndSequence().start();
 }
 } }  // v8::preparser