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/*******************************************************************************
* Copyright (c) 2012 Boeing.
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.orcs.db.internal.search.util;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.MatchResult;
import org.eclipse.osee.framework.jdk.core.type.MatchLocation;
/**
* @author John Misinco
*/
public class MatchTokenOrderProcessor implements TokenOrderProcessor {
private final List<MatchLocation> locations;
private final List<String> tokensToSearch;
private int matchIdx = 0;
private int matchStart = -1;
private int numTokensToMatch = 0;
public MatchTokenOrderProcessor() {
super();
locations = new LinkedList<MatchLocation>();
tokensToSearch = new ArrayList<String>();
}
@Override
public int getTotalTokensToMatch() {
return numTokensToMatch;
}
@Override
public void acceptTokenToMatch(String token) {
tokensToSearch.add(token);
numTokensToMatch++;
}
@Override
public boolean processToken(String token, MatchResult match) {
if (!tokensToSearch.get(matchIdx).equals(token)) {
matchIdx = 0;
}
if (tokensToSearch.get(matchIdx).equals(token)) {
if (matchIdx == 0) {
matchStart = match.start();
}
matchIdx++;
if (matchIdx == numTokensToMatch) {
locations.add(createMatchLocation(matchStart, match.end()));
matchIdx = 0;
}
}
return !locations.isEmpty();
}
private MatchLocation createMatchLocation(int start, int end) {
return new MatchLocation(start + 1, end);
}
@Override
public List<MatchLocation> getLocations() {
return locations;
}
@Override
public void clearAllLocations() {
locations.clear();
}
}
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