Update peg parser tests to r'' strings

Review URL: https://codereview.chromium.org//10991031

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12889 260f80e4-7a28-3924-810f-c04153c831b5

Author: rakudrama

utils/peg/pegparser.dart

@@ -287,8 +287,8 @@ class Grammar {
     var line = state._text.substring(start, end);
     var indicator = '';
     for (var i = 0; i < line.length && start + i < state.max_pos; i++)
-      indicator = indicator + ' ';
-    indicator = indicator + '^';
+      indicator = ' $indicator';
+    indicator = '$indicator^';
     // TODO: Convert to an exception.
     print(message);
     print(line);
@@ -614,7 +614,7 @@ String _formatMultiRule(String functor, List rules) {
 class _SequenceRule extends _Rule {
   // This rule matches the component rules in order.
   final List<_Rule> _rules;
-  final int _generatingSubRules = 0;
+  final int _generatingSubRules;
   final Function _reducer;
   bool _generatesValue;
   _SequenceRule(List<_Rule> this._rules,

utils/tests/peg/peg.status

@@ -5,9 +5,6 @@
 [ $runtime == opera ]
 peg_test: Skip
 
-[ $compiler == dart2js && ($runtime == ff || $runtime == ie || $runtime == chrome || $runtime == safari) ]
-peg_test: Skip # TODO(ahe): Triage
-
 [ $arch == x64 ]
 *: Skip
 

utils/tests/peg/peg_test.dart

@@ -43,7 +43,7 @@ testBlockComment() {
   check(g, a, "x /*/***/ x", 'EOF in block comment');
   check(g, a, "x /*/*/x**/**/ x", '[x,x]');
 
-  check(g, a, @"""
+  check(g, a, r"""
 /* Comment */
 /* Following comment with /* nested comment*/ */
 x
@@ -126,9 +126,9 @@ testC() {
 
   // Lexical elements.
   var idStartChar = CHAR(
-      @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
+      r"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
   var idNextChar = CHAR(
-      @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$_");
+      r"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$_");
 
   var id = TEXT(LEX('identifier', [idStartChar, MANY(idNextChar, min: 0)]));