More error recovery back to the top level for some cases

More error recovery back to the top level for some cases

Committed: https://code.google.com/p/dart/source/detail?r=6113

[zundel, 2012-04-01 21:10:51]

I added this recovery to help with code completion in cases where a file defines
multiple classes and the user is editing at the top.  If you have more cases,
let's try incorporating them.

https://chromiumcodereview.appspot.com/9959054/diff/1006/compiler/javatests/c...
File compiler/javatests/com/google/dart/compiler/parser/ParserRecoveryTest.java
(right):

https://chromiumcodereview.appspot.com/9959054/diff/1006/compiler/javatests/c...
compiler/javatests/com/google/dart/compiler/parser/ParserRecoveryTest.java:21:
public void testVarOnMethodDefinition() {
the first 2 tests I moved over from SyntaxTest

[zundel, 2012-04-01 21:11:31]

Also, I compared performance by running the 'dart stress test' and didn't see a
difference compared to before and after the patch.

[messick, 2012-04-01 23:08:15]

Nice. Thanks!

[scheglov, 2012-04-02 16:04:33]

LGTM

[zundel, 2012-04-02 20:02:59]

PTAL. I must have been testing without JUnit on because when I went to submit,
some of the JUnit tests were broken.

https://chromiumcodereview.appspot.com/9959054/diff/5002/compiler/javatests/c...
File compiler/javatests/com/google/dart/compiler/parser/NegativeParserTest.java
(right):

https://chromiumcodereview.appspot.com/9959054/diff/5002/compiler/javatests/c...
compiler/javatests/com/google/dart/compiler/parser/NegativeParserTest.java:306: 
(Moved to ParserRecoveryTest)

https://chromiumcodereview.appspot.com/9959054/diff/5002/compiler/javatests/c...
File compiler/javatests/com/google/dart/compiler/parser/ParserRecoveryTest.java
(right):

https://chromiumcodereview.appspot.com/9959054/diff/5002/compiler/javatests/c...
compiler/javatests/com/google/dart/compiler/parser/ParserRecoveryTest.java:245:
"class bar {}"));
I added another top level class definition to assure that the recovery got back
on track.

[scheglov, 2012-04-02 21:12:13]

LGTM

https://chromiumcodereview.appspot.com/9959054/diff/5002/compiler/java/com/go...
File compiler/java/com/google/dart/compiler/parser/DartParser.java (right):

https://chromiumcodereview.appspot.com/9959054/diff/5002/compiler/java/com/go...
compiler/java/com/google/dart/compiler/parser/DartParser.java:345: } else if
(peekPseudoKeyword(0, INTERFACE_KEYWORD)
TYPEDEF_KEYWORD ?