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/*******************************************************************************
* Copyright (c) 2000, 2008 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.wst.jsdt.internal.corext.refactoring.reorg;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.Assert;
import org.eclipse.wst.jsdt.core.IClassFile;
import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.core.ISourceReference;
import org.eclipse.wst.jsdt.core.JavaScriptModelException;
public class SourceReferenceUtil {
//no instances
private SourceReferenceUtil(){}
public static IFile getFile(ISourceReference ref) {
IJavaScriptUnit unit= getCompilationUnit(ref);
return (IFile) unit.getPrimary().getResource();
}
public static IJavaScriptUnit getCompilationUnit(ISourceReference o){
Assert.isTrue(! (o instanceof IClassFile));
if (o instanceof IJavaScriptUnit)
return (IJavaScriptUnit)o;
if (o instanceof IJavaScriptElement)
return (IJavaScriptUnit) ((IJavaScriptElement)o).getAncestor(IJavaScriptElement.JAVASCRIPT_UNIT);
return null;
}
private static boolean hasParentInSet(IJavaScriptElement elem, Set set){
IJavaScriptElement parent= elem.getParent();
while (parent != null) {
if (set.contains(parent))
return true;
parent= parent.getParent();
}
return false;
}
public static ISourceReference[] removeAllWithParentsSelected(ISourceReference[] elems){
Set set= new HashSet(Arrays.asList(elems));
List result= new ArrayList(elems.length);
for (int i= 0; i < elems.length; i++) {
ISourceReference elem= elems[i];
if (! (elem instanceof IJavaScriptElement))
result.add(elem);
else{
if (! hasParentInSet(((IJavaScriptElement)elem), set))
result.add(elem);
}
}
return (ISourceReference[]) result.toArray(new ISourceReference[result.size()]);
}
/**
* @return IFile -> List of ISourceReference (elements from that file)
*/
public static Map groupByFile(ISourceReference[] elems) {
Map map= new HashMap();
for (int i= 0; i < elems.length; i++) {
ISourceReference elem= elems[i];
IFile file= SourceReferenceUtil.getFile(elem);
if (! map.containsKey(file))
map.put(file, new ArrayList());
((List)map.get(file)).add(elem);
}
return map;
}
public static ISourceReference[] sortByOffset(ISourceReference[] methods){
Arrays.sort(methods, new Comparator(){
public int compare(Object o1, Object o2){
try{
return ((ISourceReference)o2).getSourceRange().getOffset() - ((ISourceReference)o1).getSourceRange().getOffset();
} catch (JavaScriptModelException e){
return o2.hashCode() - o1.hashCode();
}
}
});
return methods;
}
}
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