Issue 6201. Clean up to replace 'interface' with 'abstract class'

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/cleanup/migration/Migrate_1M2_removeInterface_CleanUp.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/cleanup/migration/Migrate_1M2_removeInterface_CleanUp.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/cleanup/migration/Migrate_1M2_removeInterface_CleanUp.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/cleanup/migration/Migrate_1M2_removeInterface_CleanUp.java
new file mode 100644
index 0000000000000000000000000000000000000000..8d89d683fd5b4254d47692b5a3d9198507bafb9b
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/cleanup/migration/Migrate_1M2_removeInterface_CleanUp.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2012, the Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.dart.tools.ui.internal.cleanup.migration;
+
+import com.google.dart.compiler.ast.ASTVisitor;
+import com.google.dart.compiler.ast.DartClass;
+import com.google.dart.compiler.ast.DartMethodDefinition;
+import com.google.dart.compiler.ast.DartNode;
+import com.google.dart.compiler.util.apache.StringUtils;
+import com.google.dart.tools.core.model.SourceRange;
+import com.google.dart.tools.core.utilities.general.SourceRangeFactory;
+
+/**
+ * In 1.0 M2 using "interface" should be replaced with "abstract class".
+ * 
+ * @coverage dart.editor.ui.cleanup
+ */
+public class Migrate_1M2_removeInterface_CleanUp extends AbstractMigrateCleanUp {
+  @Override
+  protected void createFix() {
+    unitNode.accept(new ASTVisitor<Void>() {
+      private String className;
+      private String defaultName;
+
+      @Override
+      public Void visitClass(DartClass node) {
+        if (node.isInterface()) {
+          className = utils.getText(node.getName());
+          // replace "interface" with "abstract class"
+          SourceRange interfaceTokenRange = SourceRangeFactory.forStartLength(
+              node.getTokenOffset(),
+              node.getTokenLength());
+          addReplaceEdit(interfaceTokenRange, "abstract class");
+          // remove "default Impl"
+          DartNode defaultClass = node.getDefaultClass();
+          if (defaultClass != null) {
+            defaultName = utils.getText(defaultClass);
+            int start = node.getDefaultTokenOffset();
+            int end = node.getOpenBraceOffset();
+            SourceRange defaultRange = SourceRangeFactory.forStartEnd(start, end);
+            addReplaceEdit(defaultRange, "");
+          }
+        }
+        super.visitClass(node);
+        className = null;
+        defaultName = null;
+        return null;
+      }
+
+      @Override
+      public Void visitMethodDefinition(DartMethodDefinition node) {
+        String methodName = utils.getText(node.getName());
+        boolean isFactoryDefault = methodName.equals(className);
+        boolean isFactoryNamed = methodName.startsWith(className + ".");
+        if (isFactoryDefault || isFactoryNamed) {
+          addReplaceEdit(SourceRangeFactory.forStartLength(node, 0), "factory ");
+          SourceRange redirectRange = SourceRangeFactory.forStartLength(
+              node.getFunction().getParametersCloseParen() + 1,
+              0);
+          String redirectName;
+          if (isFactoryDefault) {
+            redirectName = defaultName;
+          } else {
+            redirectName = defaultName + "." + StringUtils.substringAfterLast(methodName, ".");
+          }
+          addReplaceEdit(redirectRange, " = " + redirectName);
+        }
+        return super.visitMethodDefinition(node);
+      }
+    });
+  }
+}