Clean up operator names.

dart/sdk/lib/_internal/compiler/implementation/closure.dart

 // Copyright (c) 2012, 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.
 
 library closureToClassMapper;
 
 import "elements/elements.dart";
 import "dart2jslib.dart";
 import "tree/tree.dart";
 import "util/util.dart";
@@ skipping 461 matching lines @@
       Element element = elements[definition];
       if (capturedVariableMapping.containsKey(element)) {
         result.add(element);
       };
     }
     scopeData.boxedLoopVariables = result;
   }
 
   /** Returns a non-unique name for the given closure element. */
   String closureName(Element element) {
-    List<String> parts = <String>[];
+    Link<String> parts = const Link<String>();
     SourceString ownName = element.name;
     if (ownName == null || ownName.stringValue == "") {
-      parts.add("anon");
+      parts = parts.prepend("anon");
     } else {
-      parts.add(ownName.slowToString());
+      parts = parts.prepend(ownName.slowToString());
     }
     for (Element enclosingElement = element.enclosingElement;
          enclosingElement != null &&
-             (identical(enclosingElement.kind, ElementKind.GENERATIVE_CONSTRUCTOR_BODY)
+             (identical(enclosingElement.kind,
+                        ElementKind.GENERATIVE_CONSTRUCTOR_BODY)
               || identical(enclosingElement.kind, ElementKind.CLASS)
               || identical(enclosingElement.kind, ElementKind.FUNCTION)
               || identical(enclosingElement.kind, ElementKind.GETTER)
               || identical(enclosingElement.kind, ElementKind.SETTER));
          enclosingElement = enclosingElement.enclosingElement) {
-      SourceString surroundingName = enclosingElement.name;
-      if (surroundingName != null) {
-        String surroundingNameString = surroundingName.slowToString();
-        if (surroundingNameString != "") parts.add(surroundingNameString);
-      }
+      SourceString surroundingName =
+          Elements.operatorNameToIdentifier(enclosingElement.name);
+      parts = parts.prepend(surroundingName.slowToString());
     }
-    // Invert the parts.
-    for (int i = 0, j = parts.length - 1; i < j; i++, j--) {
-      var tmp = parts[i];
-      parts[i] = parts[j];
-      parts[j] = tmp;
-    }
-    return Strings.join(parts, "_");
+    StringBuffer sb = new StringBuffer();
+    parts.printOn(sb, '_');
+    return sb.toString();
   }
 
   ClosureClassMap globalizeClosure(FunctionExpression node, Element element) {
     SourceString closureName = new SourceString(closureName(element));
     ClassElement globalizedElement = new ClosureClassElement(
         closureName, compiler, element, element.getCompilationUnit());
     FunctionElement callElement =
         new FunctionElement.from(Compiler.CALL_OPERATOR_NAME,
                                  element,
                                  globalizedElement);
@@ skipping 100 matching lines @@
   }
 
   visitTryStatement(TryStatement node) {
     // TODO(ngeoffray): implement finer grain state.
     bool oldInTryStatement = inTryStatement;
     inTryStatement = true;
     node.visitChildren(this);
     inTryStatement = oldInTryStatement;
   }
 }