| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.texteditor; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtensionPoint; |
| import org.eclipse.core.runtime.Platform; |
| |
| import org.eclipse.ui.editors.text.EditorsUI; |
| |
| |
| /** |
| * Internal annotation super type hierarchy cache. |
| * TODO this cache is currently unbound, i.e. only limited by the number of annotation types |
| * |
| * @since 3.0 |
| */ |
| public final class AnnotationTypeHierarchy { |
| |
| private Map<String, String> fTypeMap; |
| private Map<String, AnnotationType> fTypesCache= new HashMap<>(); |
| |
| public AnnotationTypeHierarchy() { |
| } |
| |
| public AnnotationType getAnnotationType(String typeName) { |
| AnnotationType type= fTypesCache.get(typeName); |
| if (type == null) { |
| String[] superTypes= computeSuperTypes(typeName); |
| type= new AnnotationType(typeName, superTypes); |
| fTypesCache.put(typeName, type); |
| } |
| return type; |
| } |
| |
| public boolean isSubtype(String superType, String subtypeCandidate) { |
| AnnotationType type= getAnnotationType(subtypeCandidate); |
| return type.isSubtype(superType); |
| } |
| |
| private String[] computeSuperTypes(String typeName) { |
| ArrayList<String> types= new ArrayList<>(); |
| append(types, getDirectSuperType(typeName)); |
| int index= 0; |
| while (index < types.size()) { |
| String type= types.get(index++); |
| append(types, getDirectSuperType(type)); |
| } |
| |
| String[] superTypes= new String[types.size()]; |
| types.toArray(superTypes); |
| return superTypes; |
| } |
| |
| private String getDirectSuperType(String typeName) { |
| return getTypeMap().get(typeName); |
| } |
| |
| private void append(List<String> list, String string) { |
| if (string == null || string.trim().length() == 0) |
| return; |
| |
| if (!list.contains(string)) |
| list.add(string); |
| } |
| |
| private Map<String, String> getTypeMap() { |
| if (fTypeMap == null) |
| fTypeMap= readTypes(); |
| return fTypeMap; |
| } |
| |
| private Map<String, String> readTypes() { |
| HashMap<String, String> allTypes= new HashMap<>(); |
| |
| IExtensionPoint extensionPoint= Platform.getExtensionRegistry().getExtensionPoint(EditorsUI.PLUGIN_ID, "annotationTypes"); //$NON-NLS-1$ |
| if (extensionPoint != null) { |
| IConfigurationElement[] elements= extensionPoint.getConfigurationElements(); |
| for (int i= 0; i < elements.length; i++) { |
| IConfigurationElement element= elements[i]; |
| |
| String name= element.getAttribute("name"); //$NON-NLS-1$ |
| if (name == null || name.trim().length() == 0) |
| continue; |
| |
| String parent= element.getAttribute("super"); //$NON-NLS-1$ |
| if (parent == null || parent.trim().length() == 0) |
| parent= ""; //$NON-NLS-1$ |
| |
| allTypes.put(name, parent); |
| } |
| } |
| |
| return allTypes; |
| } |
| } |