Report warnings and non-fatal errors for shadowing declaration and usage.

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameFieldProcessor.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameFieldProcessor.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameFieldProcessor.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameFieldProcessor.java
index 5a4b15027473a8fae7ef6eefa70e1a6fb07c1a8d..dfded7541f91a011426da4543e8528ad9289e3c5 100644
--- a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameFieldProcessor.java
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameFieldProcessor.java
@@ -13,136 +13,45 @@
  */
 package com.google.dart.tools.internal.corext.refactoring.rename;
 
-import com.google.dart.tools.core.model.CompilationUnit;
-import com.google.dart.tools.core.model.DartModelException;
 import com.google.dart.tools.core.model.Field;
-import com.google.dart.tools.core.model.SourceRange;
-import com.google.dart.tools.core.model.Type;
-import com.google.dart.tools.core.model.TypeMember;
-import com.google.dart.tools.core.search.SearchEngine;
-import com.google.dart.tools.core.search.SearchEngineFactory;
-import com.google.dart.tools.core.search.SearchMatch;
 import com.google.dart.tools.internal.corext.refactoring.Checks;
 import com.google.dart.tools.internal.corext.refactoring.RefactoringAvailabilityTester;
 import com.google.dart.tools.internal.corext.refactoring.RefactoringCoreMessages;
-import com.google.dart.tools.internal.corext.refactoring.base.DartStatusContext;
-import com.google.dart.tools.internal.corext.refactoring.changes.TextChangeCompatibility;
-import com.google.dart.tools.internal.corext.refactoring.util.ExecutionUtils;
-import com.google.dart.tools.internal.corext.refactoring.util.Messages;
-import com.google.dart.tools.internal.corext.refactoring.util.RunnableObjectEx;
-import com.google.dart.tools.internal.corext.refactoring.util.TextChangeManager;
-import com.google.dart.tools.ui.internal.refactoring.RefactoringSaveHelper;
-import com.google.dart.tools.ui.internal.viewsupport.BasicElementLabels;
 
 import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.runtime.IPath;
-import org.eclipse.core.runtime.IProgressMonitor;
-import org.eclipse.core.runtime.SubProgressMonitor;
-import org.eclipse.ltk.core.refactoring.Change;
-import org.eclipse.ltk.core.refactoring.CompositeChange;
 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
-import org.eclipse.ltk.core.refactoring.TextChange;
-import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
-import org.eclipse.text.edits.ReplaceEdit;
-import org.eclipse.text.edits.TextEdit;
-
-import java.util.List;
 
 /**
  * {@link DartRenameProcessor} for {@link Field}.
  * 
  * @coverage dart.editor.ui.refactoring.core
  */
-public class RenameFieldProcessor extends DartRenameProcessor {
+public class RenameFieldProcessor extends RenameTypeMemberProcessor {
 
   public static final String IDENTIFIER = "com.google.dart.tools.ui.renameFieldProcessor"; //$NON-NLS-1$
 
-  private static void addTextEdit(TextChange change, String groupName, TextEdit textEdit) {
-    TextChangeCompatibility.addTextEdit(change, groupName, textEdit);
-  }
-
-  private final Field field;
-  private final String oldName;
-  private final TextChangeManager changeManager = new TextChangeManager(true);
-
-  private List<SearchMatch> references;
-
   /**
    * @param field the {@link Field} to rename, not <code>null</code>.
    */
   public RenameFieldProcessor(Field field) {
-    this.field = field;
-    oldName = field.getElementName();
-    setNewElementName(oldName);
-  }
-
-  @Override
-  public RefactoringStatus checkInitialConditions(IProgressMonitor pm) throws CoreException {
-    return Checks.checkIfCuBroken(field);
+    super(field);
   }
 
   @Override
   public RefactoringStatus checkNewElementName(String newName) throws CoreException {
     RefactoringStatus result = Checks.checkFieldName(newName);
-
-    if (!field.isStatic() && !Checks.startsWithLowerCase(newName)) {
-      result.addWarning(RefactoringCoreMessages.RenameFieldRefactoring_should_start_lowercase);
-    }
-
-    if (Checks.isAlreadyNamed(field, newName)) {
-      result.addError(
-          RefactoringCoreMessages.RenameRefactoring_another_name,
-          DartStatusContext.create(field));
-      return result;
-    }
-
-    // type can not have two members with same name
-    {
-      Type enclosingType = field.getDeclaringType();
-      TypeMember[] existingMembers = enclosingType.getExistingMembers(newName);
-      if (existingMembers.length != 0) {
-        IPath resourcePath = enclosingType.getResource().getFullPath();
-        result.addError(Messages.format(
-            RefactoringCoreMessages.RenameRefactoring_enclosing_type_member_already_defined,
-            new Object[] {
-                enclosingType.getElementName(),
-                BasicElementLabels.getPathLabel(resourcePath, false),
-                newName}), DartStatusContext.create(existingMembers[0]));
-        return result;
-      }
-    }
-
+    result.merge(super.checkNewElementName(newName));
     return result;
   }
 
   @Override
-  public Change createChange(IProgressMonitor monitor) throws CoreException {
-    monitor.beginTask(RefactoringCoreMessages.RenameRefactoring_checking, 1);
-    try {
-      return new CompositeChange(getProcessorName(), changeManager.getAllChanges());
-    } finally {
-      monitor.done();
-    }
-  }
-
-  @Override
-  public final String getCurrentElementName() {
-    return field.getElementName();
-  }
-
-  @Override
-  public Object[] getElements() {
-    return new Object[] {field};
-  }
-
-  @Override
   public String getIdentifier() {
     return IDENTIFIER;
   }
 
   @Override
   public Object getNewElement() {
-    return field.getDeclaringType().getField(getNewElementName());
+    return member.getDeclaringType().getField(getNewElementName());
   }
 
   @Override
@@ -151,137 +60,7 @@ public class RenameFieldProcessor extends DartRenameProcessor {
   }
 
   @Override
-  public int getSaveMode() {
-    return RefactoringSaveHelper.SAVE_ALL;
-  }
-
-  @Override
   public boolean isApplicable() throws CoreException {
-    return RefactoringAvailabilityTester.isRenameAvailable(field);
-  }
-
-  @Override
-  protected RefactoringStatus doCheckFinalConditions(
-      IProgressMonitor pm,
-      CheckConditionsContext context) throws CoreException {
-    try {
-      pm.beginTask("", 19); //$NON-NLS-1$
-      pm.setTaskName(RefactoringCoreMessages.RenameRefactoring_checking);
-      RefactoringStatus result = new RefactoringStatus();
-      // check new name
-      result.merge(checkNewElementName(getNewElementName()));
-      pm.worked(1);
-      // prepare references
-      pm.setTaskName(RefactoringCoreMessages.RenameRefactoring_searching);
-      prepareReferences(new SubProgressMonitor(pm, 3));
-      pm.setTaskName(RefactoringCoreMessages.RenameRefactoring_checking);
-      // analyze affected units (such as warn about existing compilation errors)
-      result.merge(analyzeAffectedCompilationUnits());
-      // check for possible conflicts
-      result.merge(analyzePossibleConflicts(new SubProgressMonitor(pm, 10)));
-      if (result.hasFatalError()) {
-        return result;
-      }
-      // OK, create changes
-      createChanges(new SubProgressMonitor(pm, 5));
-      return result;
-    } finally {
-      pm.done();
-    }
-  }
-
-  private void addDeclarationUpdate() throws CoreException {
-    SourceRange nameRange = field.getNameRange();
-    CompilationUnit cu = field.getCompilationUnit();
-    String editName = RefactoringCoreMessages.RenameRefactoring_update_declaration;
-    addTextEdit(changeManager.get(cu), editName, createTextChange(nameRange));
-  }
-
-  private void addReferenceUpdates(IProgressMonitor pm) throws DartModelException {
-    pm.beginTask("", references.size()); //$NON-NLS-1$
-    String editName = RefactoringCoreMessages.RenameRefactoring_update_reference;
-    for (SearchMatch match : references) {
-      CompilationUnit cu = match.getElement().getAncestor(CompilationUnit.class);
-      SourceRange matchRange = match.getSourceRange();
-      addTextEdit(changeManager.get(cu), editName, createTextChange(matchRange));
-      pm.worked(1);
-    }
-  }
-
-  private RefactoringStatus analyzeAffectedCompilationUnits() throws CoreException {
-    RefactoringStatus result = new RefactoringStatus();
-    result.merge(Checks.checkCompileErrorsInAffectedFiles(references));
-    return result;
-  }
-
-  private RefactoringStatus analyzePossibleConflicts(IProgressMonitor pm) throws CoreException {
-    pm.beginTask("Analyze possible conflicts", 3);
-    try {
-      RefactoringStatus result = new RefactoringStatus();
-      String newName = getNewElementName();
-      // analyze top-level elements
-      pm.subTask("Analyze top-level elements");
-      RenameAnalyzeUtil.checkShadow_topLevel(
-          result,
-          field,
-          references,
-          newName,
-          RefactoringCoreMessages.RenameRefactoring_shadow_topLevel);
-      pm.worked(1);
-      if (result.hasFatalError()) {
-        return result;
-      }
-      // analyze supertypes
-      pm.subTask("Analyze supertypes");
-      RenameAnalyzeUtil.checkShadow_superType_member(
-          result,
-          field,
-          newName,
-          RefactoringCoreMessages.RenameRefactoring_shadow_superType_member);
-      pm.worked(1);
-      if (result.hasFatalError()) {
-        return result;
-      }
-      // analyze subtypes
-      pm.subTask("Analyze subtypes");
-      RenameAnalyzeUtil.checkShadow_subType(
-          result,
-          field,
-          newName,
-          RefactoringCoreMessages.RenameRefactoring_shadow_subType_member,
-          RefactoringCoreMessages.RenameRefactoring_shadow_subType_parameter,
-          RefactoringCoreMessages.RenameRefactoring_shadow_subType_variable);
-      pm.worked(1);
-
-      // OK
-      return result;
-    } finally {
-      pm.done();
-    }
-  }
-
-  private void createChanges(IProgressMonitor pm) throws CoreException {
-    pm.beginTask(RefactoringCoreMessages.RenameRefactoring_checking, 10);
-    changeManager.clear();
-    // update declaration
-    addDeclarationUpdate();
-    pm.worked(1);
-    // update references
-    addReferenceUpdates(new SubProgressMonitor(pm, 9));
-    pm.done();
-  }
-
-  private TextEdit createTextChange(SourceRange sourceRange) {
-    return new ReplaceEdit(sourceRange.getOffset(), sourceRange.getLength(), getNewElementName());
-  }
-
-  private void prepareReferences(final IProgressMonitor pm) throws CoreException {
-    references = ExecutionUtils.runObjectCore(new RunnableObjectEx<List<SearchMatch>>() {
-      @Override
-      public List<SearchMatch> runObject() throws Exception {
-        SearchEngine searchEngine = SearchEngineFactory.createSearchEngine();
-        return searchEngine.searchReferences(field, null, null, pm);
-      }
-    });
+    return RefactoringAvailabilityTester.isRenameAvailable((Field) member);
   }
 }