dart2js: Make usage of names more consistent between compiler and runtime.

pkg/compiler/lib/src/js_backend/namer.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of js_backend;
 
 /**
  * Assigns JavaScript identifiers to Dart variables, class-names and members.
  */
 class Namer implements ClosureNamer {
@@ skipping 874 matching lines @@
 
   // This name is used as part of the name of a TypeConstant
   String uniqueNameForTypeConstantElement(Element element) {
     // TODO(sra): If we replace the period with an identifier character,
     // TypeConstants will have better names in unminified code.
     return "${globalObjectFor(element)}.${getNameX(element)}";
   }
 
   String globalObjectForConstant(ConstantValue constant) => 'C';
 
-  String operatorIsPrefix() => r'$is';
+  String get operatorIsPrefix => r'$is';
 
-  String operatorAsPrefix() => r'$as';
+  String get operatorAsPrefix => r'$as';
 
-  String operatorSignature() => r'$signature';
+  String get operatorSignature => r'$signature';
 
-  String typedefTag() => r'typedef';
+  String get typedefTag => r'typedef';
 
-  String functionTypeTag() => r'func';
+  String get functionTypeTag => r'func';
 
-  String functionTypeVoidReturnTag() => r'void';
+  String get functionTypeVoidReturnTag => r'void';
 
-  String functionTypeReturnTypeTag() => r'ret';
+  String get functionTypeReturnTypeTag => r'ret';
 
-  String functionTypeRequiredParametersTag() => r'args';
+  String get functionTypeRequiredParametersTag => r'args';
 
-  String functionTypeOptionalParametersTag() => r'opt';
+  String get functionTypeOptionalParametersTag => r'opt';
 
-  String functionTypeNamedParametersTag() => r'named';
+  String get functionTypeNamedParametersTag => r'named';
 
   Map<FunctionType,String> functionTypeNameMap =
       new Map<FunctionType,String>();
   final FunctionTypeNamer functionTypeNamer;
 
   String getFunctionTypeName(FunctionType functionType) {
     return functionTypeNameMap.putIfAbsent(functionType, () {
       String proposedName = functionTypeNamer.computeName(functionType);
       String freshName = getFreshName(proposedName, usedInstanceNames,
                                       suggestedInstanceNames, ensureSafe: true);
       return freshName;
     });
   }
 
   String operatorIsType(DartType type) {
     if (type.isFunctionType) {
       // TODO(erikcorry): Reduce from $isx to ix when we are minifying.
-      return '${operatorIsPrefix()}_${getFunctionTypeName(type)}';
+      return '${operatorIsPrefix}_${getFunctionTypeName(type)}';
     }
     return operatorIs(type.element);
   }
 
   String operatorIs(Element element) {
     // TODO(erikcorry): Reduce from $isx to ix when we are minifying.
-    return '${operatorIsPrefix()}${getRuntimeTypeName(element)}';
+    return '${operatorIsPrefix}${getRuntimeTypeName(element)}';
   }
 
   /*
    * Returns a name that does not clash with reserved JS keywords,
    * and also ensures it won't clash with other identifiers.
    */
   String _safeName(String name, Set<String> reserved) {
     if (reserved.contains(name) || name.startsWith(r'$')) {
       name = '\$$name';
     }
     assert(!reserved.contains(name));
     return name;
   }
 
   String substitutionName(Element element) {
     // TODO(ahe): Creating a string here is unfortunate. It is slow (due to
     // string concatenation in the implementation), and may prevent
     // segmentation of '$'.
-    return '${operatorAsPrefix()}${getNameForRti(element)}';
+    return '${operatorAsPrefix}${getNameForRti(element)}';
   }
 
   String safeName(String name) => _safeName(name, jsReserved);
   String safeVariableName(String name) => _safeName(name, jsVariableReserved);
 
   String operatorNameToIdentifier(String name) {
     if (name == null) return null;
     if (name == '==') {
       return r'$eq';
     } else if (name == '~') {
@@ skipping 429 matching lines @@
         if (!first) {
           sb.write('_');
         }
         sb.write('_');
         visit(parameter);
         first = true;
       }
     }
   }
 }