Split parser/listener.dart, parser/class_element_listener.dart and tokens/token.dart into smaller l…

pkg/compiler/lib/src/parser/parser.dart

Index: pkg/compiler/lib/src/parser/parser.dart
diff --git a/pkg/compiler/lib/src/parser/parser.dart b/pkg/compiler/lib/src/parser/parser.dart
index 69b014f043e870ebd3ea02045e57dbfc01463219..68f96bc363c60187aa22cd6313edd5fb5918061f 100644
--- a/pkg/compiler/lib/src/parser/parser.dart
+++ b/pkg/compiler/lib/src/parser/parser.dart
@@ -8,50 +8,53 @@ import '../diagnostics/messages.dart' show
     MessageKind;
 import '../tokens/keyword.dart' show
     Keyword;
-import '../tokens/token.dart' show
+import '../tokens/precedence.dart' show
+    PrecedenceInfo;
+import '../tokens/precedence_constants.dart' show
     AS_INFO,
     ASSIGNMENT_PRECEDENCE,
-    BAD_INPUT_TOKEN,
-    BeginGroupToken,
     CASCADE_PRECEDENCE,
+    EQUALITY_PRECEDENCE,
+    GT_INFO,
+    GT_GT_INFO,
+    IS_INFO,
+    MINUS_MINUS_INFO,
+    OPEN_PAREN_INFO,
+    OPEN_SQUARE_BRACKET_INFO,
+    PERIOD_INFO,
+    PLUS_PLUS_INFO,
+    POSTFIX_PRECEDENCE,
+    QUESTION_INFO,
+    QUESTION_PERIOD_INFO,
+    RELATIONAL_PRECEDENCE;
+import '../tokens/token.dart' show
+    BeginGroupToken,
+    isUserDefinableOperator,
+    KeywordToken,
+    SymbolToken,
+    Token;
+import '../tokens/token_constants.dart' show
+    BAD_INPUT_TOKEN,
     COMMA_TOKEN,
     DOUBLE_TOKEN,
     EOF_TOKEN,
     EQ_TOKEN,
-    EQUALITY_PRECEDENCE,
     FUNCTION_TOKEN,
-    GT_INFO,
-    GT_GT_INFO,
     HASH_TOKEN,
     HEXADECIMAL_TOKEN,
     IDENTIFIER_TOKEN,
     INT_TOKEN,
-    IS_INFO,
-    isUserDefinableOperator,
     KEYWORD_TOKEN,
-    KeywordToken,
     LT_TOKEN,
-    MINUS_MINUS_INFO,
     OPEN_CURLY_BRACKET_TOKEN,
-    OPEN_PAREN_INFO,
     OPEN_PAREN_TOKEN,
-    OPEN_SQUARE_BRACKET_INFO,
     OPEN_SQUARE_BRACKET_TOKEN,
-    PERIOD_INFO,
     PERIOD_TOKEN,
-    PLUS_PLUS_INFO,
-    PrecedenceInfo,
-    POSTFIX_PRECEDENCE,
-    QUESTION_INFO,
-    QUESTION_PERIOD_INFO,
-    RELATIONAL_PRECEDENCE,
     SEMICOLON_TOKEN,
     STRING_INTERPOLATION_IDENTIFIER_TOKEN,
     STRING_INTERPOLATION_TOKEN,
-    STRING_TOKEN,
-    SymbolToken,
-    Token;
-import '../util/characters.dart' show
+    STRING_TOKEN;
+import '../util/characters.dart' as Characters show
     $CLOSE_CURLY_BRACKET;
 import '../util/util.dart' show
     Link;
@@ -507,7 +510,7 @@ class Parser {
     Token endGroup = beginGroupToken.endGroup;
     if (endGroup == null) {
       return listener.unmatched(beginGroupToken);
-    } else if (!identical(endGroup.kind, $CLOSE_CURLY_BRACKET)) {
+    } else if (!identical(endGroup.kind, Characters.$CLOSE_CURLY_BRACKET)) {
       return listener.unmatched(beginGroupToken);
     }
     return beginGroupToken.endGroup;