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

pkg/compiler/lib/src/tree/unparser.dart

Index: pkg/compiler/lib/src/tree/unparser.dart
diff --git a/pkg/compiler/lib/src/tree/unparser.dart b/pkg/compiler/lib/src/tree/unparser.dart
index b7d31098a3a8f2845148da5adb0e795974602fb3..fd00ba31403da964a071ded52d16b0a3c7bc27de 100644
--- a/pkg/compiler/lib/src/tree/unparser.dart
+++ b/pkg/compiler/lib/src/tree/unparser.dart
@@ -34,8 +34,8 @@ class Unparser extends Indentation implements Visitor {
   void addToken(Token token) {
     if (token == null) return;
     write(token.value);
-    if (identical(token.kind, KEYWORD_TOKEN)
-        || identical(token.kind, IDENTIFIER_TOKEN)) {
+    if (identical(token.kind, Tokens.KEYWORD_TOKEN)
+        || identical(token.kind, Tokens.IDENTIFIER_TOKEN)) {
       write(' ');
     }
   }
@@ -209,7 +209,7 @@ class Unparser extends Indentation implements Visitor {
       } else {
         visit(send.receiver);
         Identifier identifier = send.selector.asIdentifier();
-        if (identical(identifier.token.kind, KEYWORD_TOKEN)) {
+        if (identical(identifier.token.kind, Tokens.KEYWORD_TOKEN)) {
           write(' ');
         } else if (identifier.source == 'negate') {
           // TODO(ahe): Remove special case for negate.
@@ -292,13 +292,13 @@ class Unparser extends Indentation implements Visitor {
   visitLiteralDouble(LiteralDouble node) {
     write(node.token.value);
     // -Lit is represented as a send.
-    if (node.token.kind == PLUS_TOKEN) write(node.token.next.value);
+    if (node.token.kind == Tokens.PLUS_TOKEN) write(node.token.next.value);
   }
 
   visitLiteralInt(LiteralInt node) {
     write(node.token.value);
     // -Lit is represented as a send.
-    if (node.token.kind == PLUS_TOKEN) write(node.token.next.value);
+    if (node.token.kind == Tokens.PLUS_TOKEN) write(node.token.next.value);
   }
 
   visitLiteralString(LiteralString node) {