/*******************************************************************************
* Copyright (c) 2007 Symbian 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:
* Andrew Ferguson (Symbian) - Initial implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.index;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor;
/**
* Binding comparator suitable for C/C++ across index implementations. This will not be used
* unless we ever have non-PDOM implementations of IIndexFragment, and in that case we may find
* this implementation is too slow.
*/
public class DefaultFragmentBindingComparator implements IIndexFragmentBindingComparator {
public int compare(IIndexFragmentBinding a, IIndexFragmentBinding b) {
int cmp= compareQualifiedNames(CPPVisitor.getQualifiedName(a), CPPVisitor.getQualifiedName(b));
if (cmp == 0) {
int ac= a.getBindingConstant(), bc= b.getBindingConstant();
cmp= ac < bc ? -1 : (ac > bc ? 1 : 0);
if (cmp == 0) {
cmp= IndexCPPSignatureUtil.compareSignatures(a, b);
}
}
return cmp;
}
private int compareQualifiedNames(String[] a, String[] b) {
if (a.length < b.length)
return -1;
if (a.length > b.length)
return 1;
for (int i= 0; i < a.length; i++) {
int cmp= a[i].compareTo(b[i]);
if (cmp != 0)
return cmp;
}
return 0;
}
}