| /******************************************************************************* |
| * Copyright (c) 2000, 2009 QNX Software Systems 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: |
| * QNX Software Systems - Initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.cdt.internal.core.model; |
| |
| import java.io.File; |
| import java.util.List; |
| import java.util.Vector; |
| |
| import org.eclipse.cdt.core.model.ICElement; |
| import org.eclipse.core.resources.IResource; |
| |
| /** |
| * Holds cached structure and properties for a C element. |
| * Subclassed to carry properties for specific kinds of elements. |
| */ |
| public class CElementInfo { |
| /** |
| * Shared empty collection used for efficiency. |
| */ |
| static Object[] NO_NON_C_RESOURCES = new Object[] {}; |
| |
| |
| protected CElement element; |
| |
| /** |
| * Collection of handles of immediate children of this |
| * object. This is an empty array if this element has |
| * no children. |
| */ |
| private List<ICElement> fChildren; |
| |
| /** |
| * Is the structure of this element known |
| * @see ICElement#isStructureKnown() |
| */ |
| protected boolean fIsStructureKnown = false; |
| |
| protected long modificationStamp = 0; |
| |
| protected CElementInfo(CElement element) { |
| this.element = element; |
| // Array list starts with size = 0 |
| fChildren = new Vector<ICElement>(0); |
| } |
| |
| protected CElement getElement() { |
| return element; |
| } |
| |
| protected void addChild(ICElement child) { |
| // Do not add a check if the child is contained here |
| // because it causes a performance bottle neck for large files. |
| fChildren.add(child); |
| } |
| |
| protected ICElement[] getChildren() { |
| synchronized (fChildren) { |
| ICElement[] array= new ICElement[fChildren.size()]; |
| return fChildren.toArray( array ); |
| } |
| } |
| |
| List<ICElement> internalGetChildren() { |
| return fChildren; |
| } |
| |
| |
| /** |
| * Returns <code>true</code> if this child is in my children collection |
| */ |
| protected boolean includesChild(ICElement child) { |
| if(fChildren.contains(child)) |
| return true; |
| return false; |
| } |
| |
| /** |
| * @see ICElement#isStructureKnown() |
| */ |
| protected boolean isStructureKnown() { |
| return fIsStructureKnown; |
| } |
| |
| protected void removeChild(ICElement child) { |
| fChildren.remove(child); |
| } |
| |
| protected void removeChildren () { |
| fChildren.clear(); |
| } |
| |
| protected void setChildren(List<? extends ICElement> children) { |
| fChildren.addAll(children); |
| } |
| |
| protected boolean hasChildren() { |
| return fChildren.size() > 0; |
| } |
| |
| protected void setChanged() { |
| modificationStamp = 0; |
| } |
| |
| protected boolean hasChanged () { |
| IResource r = null; |
| boolean b = false; |
| r = getElement().getUnderlyingResource(); |
| if (r != null && r.exists()) { |
| long modif = 0; |
| switch(r.getType()) { |
| // Adding/Removing does not count as changing, in Eclipse |
| // Ask the underlying file system |
| case IResource.FOLDER: |
| case IResource.PROJECT: |
| case IResource.ROOT: |
| File file = r.getLocation().toFile(); |
| modif = file.lastModified(); |
| break; |
| |
| case IResource.FILE: |
| modif = r.getModificationStamp(); |
| break; |
| } |
| b = (modif != modificationStamp); |
| modificationStamp = modif; |
| } |
| return b; |
| } |
| |
| /** |
| * Sets whether the structure of this element known |
| * @see ICElement#isStructureKnown() |
| */ |
| protected void setIsStructureKnown(boolean newIsStructureKnown) { |
| fIsStructureKnown = newIsStructureKnown; |
| } |
| |
| @Override |
| public Object clone() { |
| try { |
| return super.clone(); |
| } catch (CloneNotSupportedException e) { |
| throw new Error(); |
| } |
| } |
| } |