47 lines
1.4 KiB
Java
47 lines
1.4 KiB
Java
/*******************************************************************************
|
|
* Copyright (c) 2002 - 2006 IBM Corporation.
|
|
* 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 com.ibm.wala.util;
|
|
|
|
import java.util.Iterator;
|
|
|
|
import com.ibm.wala.ecore.common.EContainer;
|
|
import com.ibm.wala.ecore.regex.EPattern;
|
|
|
|
/**
|
|
* @author sfink
|
|
*
|
|
*/
|
|
public class PatternSetUtil {
|
|
|
|
/**
|
|
* @param c a Container of EPattern
|
|
* @return a regular expression that is the OR of a set of regular expressions
|
|
* contained the EContainer
|
|
* @throws IllegalArgumentException if c is null
|
|
*/
|
|
public static String composeRegularExpression(EContainer c) {
|
|
if (c == null) {
|
|
throw new IllegalArgumentException("c is null");
|
|
}
|
|
StringBuffer result = new StringBuffer();
|
|
for (Iterator it = c.getContents().iterator(); it.hasNext(); ) {
|
|
EPattern pattern = (EPattern)it.next();
|
|
String s = pattern.getPattern();
|
|
result.append(s);
|
|
if (it.hasNext()) {
|
|
result.append('|');
|
|
}
|
|
}
|
|
return result.toString();
|
|
}
|
|
|
|
}
|