| /******************************************************************************* |
| * Copyright (c) 2000, 2009 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.jsdt.core; |
| |
| import java.io.OutputStream; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| /** |
| * A type hierarchy provides navigations between a type and its resolved |
| * supertypes and subtypes for a specific type or for all types within a region. |
| * Supertypes may extend outside of the type hierarchy's region in which it was |
| * created such that the root of the hierarchy is always included. |
| * <p> |
| * A type hierarchy is static and can become stale. Although consistent when |
| * created, it does not automatically track changes in the model. |
| * As changes in the model potentially invalidate the hierarchy, change notifications |
| * are sent to registered <code>ITypeHierarchyChangedListener</code>s. Listeners should |
| * use the <code>exists</code> method to determine if the hierarchy has become completely |
| * invalid (for example, when the type or project the hierarchy was created on |
| * has been removed). To refresh a hierarchy, use the <code>refresh</code> method. |
| * </p> |
| * <p> |
| * The type hierarchy may contain cycles due to malformed supertype declarations. |
| * Most type hierarchy queries are oblivious to cycles; the <code>getAll* </code> |
| * methods are implemented such that they are unaffected by cycles. |
| * </p> |
| * <p> |
| * This interface is not intended to be implemented by clients. |
| * </p> |
| * |
| * Provisional API: This class/interface is part of an interim API that is still under development and expected to |
| * change significantly before reaching stability. It is being made available at this early stage to solicit feedback |
| * from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken |
| * (repeatedly) as the API evolves. |
| */ |
| public interface ITypeHierarchy { |
| /** |
| * Adds the given listener for changes to this type hierarchy. Listeners are |
| * notified when this type hierarchy changes and needs to be refreshed. |
| * Has no effect if an identical listener is already registered. |
| * |
| * @param listener the listener |
| */ |
| void addTypeHierarchyChangedListener(ITypeHierarchyChangedListener listener); |
| /** |
| * Returns whether the given type is part of this hierarchy. |
| * |
| * @param type the given type |
| * @return true if the given type is part of this hierarchy, false otherwise |
| */ |
| boolean contains(IType type); |
| /** |
| * Returns whether the type and project this hierarchy was created on exist. |
| * @return true if the type and project this hierarchy was created on exist, false otherwise |
| */ |
| boolean exists(); |
| /** |
| * Returns all classes in this type hierarchy's graph, in no particular |
| * order. Any classes in the creation region which were not resolved to |
| * have any subtypes or supertypes are not included in the result. |
| * |
| * @return all classes in this type hierarchy's graph |
| */ |
| IType[] getAllClasses(); |
| /** |
| * Returns all resolved subtypes (direct and indirect) of the |
| * given type, in no particular order, limited to the |
| * types in this type hierarchy's graph. An empty array |
| * is returned if there are no resolved subtypes for the |
| * given type. |
| * |
| * @param type the given type |
| * @return all resolved subtypes (direct and indirect) of the given type |
| */ |
| IType[] getAllSubtypes(IType type); |
| /** |
| * Returns all resolved superclasses of the |
| * given class, in bottom-up order. An empty array |
| * is returned if there are no resolved superclasses for the |
| * given class. |
| * |
| * <p>NOTE: once a type hierarchy has been created, it is more efficient to |
| * query the hierarchy for superclasses than to query a class recursively up |
| * the superclass chain. Querying an element performs a dynamic resolution, |
| * whereas the hierarchy returns a pre-computed result. |
| * |
| * @param type the given type |
| * @return all resolved superclasses of the given class, in bottom-up order, an empty |
| * array if none. |
| */ |
| IType[] getAllSuperclasses(IType type); |
| /** |
| * Return the flags associated with the given type (would be equivalent to <code>IMember.getFlags()</code>), |
| * or <code>-1</code> if this information wasn't cached on the hierarchy during its computation. |
| * |
| * @param type the given type |
| * @return the modifier flags for this member |
| * @see Flags |
| */ |
| int getCachedFlags(IType type); |
| /** |
| * Returns all classes in the graph which have no resolved superclass, |
| * in no particular order. |
| * |
| * @return all classes in the graph which have no resolved superclass |
| */ |
| IType[] getRootClasses(); |
| /** |
| * Returns the direct resolved subclasses of the given class, |
| * in no particular order, limited to the classes in this |
| * type hierarchy's graph. |
| * Returns an empty collection if no classes were resolved to be subclasses of the given |
| * class. |
| * |
| * @param type the given type |
| * @return the direct resolved subclasses of the given class limited to the classes in this |
| * type hierarchy's graph, an empty collection if none. |
| */ |
| IType[] getSubclasses(IType type); |
| /** |
| * Returns the resolved superclass of the given class, |
| * or <code>null</code> if the given class has no superclass or |
| * the superclass could not be resolved. |
| * |
| * @param type the given type |
| * @return the resolved superclass of the given class, |
| * or <code>null</code> if the given class has no superclass or |
| * the superclass could not be resolved. |
| */ |
| IType getSuperclass(IType type); |
| /** |
| * Returns the type this hierarchy was computed for. |
| * Returns <code>null</code> if this hierarchy was computed for a region. |
| * |
| * @return the type this hierarchy was computed for |
| */ |
| IType getType(); |
| /** |
| * Re-computes the type hierarchy reporting progress. |
| * |
| * @param monitor the given progress monitor |
| * @exception JavaScriptModelException if unable to refresh the hierarchy |
| */ |
| void refresh(IProgressMonitor monitor) throws JavaScriptModelException; |
| /** |
| * Removes the given listener from this type hierarchy. |
| * Has no affect if an identical listener is not registered. |
| * |
| * @param listener the listener |
| */ |
| void removeTypeHierarchyChangedListener(ITypeHierarchyChangedListener listener); |
| /** |
| * Stores the type hierarchy in an output stream. This stored hierarchy can be load by |
| * IType#loadTypeHierachy(IJavaScriptProject, InputStream, IProgressMonitor). |
| * Listeners of this hierarchy are not stored. |
| * |
| * Only hierarchies created by the following methods can be store: |
| * <ul> |
| * <li>IType#newSupertypeHierarchy(IProgressMonitor)</li> |
| * <li>IType#newTypeHierarchy(IJavaScriptProject, IProgressMonitor)</li> |
| * <li>IType#newTypeHierarchy(IProgressMonitor)</li> |
| * </ul> |
| * |
| * @param outputStream output stream where the hierarchy will be stored |
| * @param monitor the given progress monitor |
| * @exception JavaScriptModelException if unable to store the hierarchy in the ouput stream |
| * @see IType#loadTypeHierachy(java.io.InputStream, IProgressMonitor) |
| * @since 2.1 |
| */ |
| void store(OutputStream outputStream, IProgressMonitor monitor) throws JavaScriptModelException; |
| } |