DefaultJavaRuntimeEnvironment.java

/*******************************************************************************
 * Copyright (c) 2012 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.jdt.core.tests.compiler.regression;

import org.eclipse.jdt.core.tests.util.Util;
import org.eclipse.jdt.internal.compiler.batch.FileSystem;
import org.eclipse.jdt.internal.compiler.env.INameEnvironment;

public class DefaultJavaRuntimeEnvironment extends FileSystem {

	private DefaultJavaRuntimeEnvironment(String[] jreClasspaths) {
		super(jreClasspaths, new String[] {} /* ignore initial file names */, null);
	}

	private static INameEnvironment[] defaultJreClassLibs;

	public static INameEnvironment[] create(String[] jreClasspaths) {
		if (defaultJreClassLibs == null) {
			defaultJreClassLibs = new INameEnvironment[1];
			defaultJreClassLibs[0] = new DefaultJavaRuntimeEnvironment(jreClasspaths);
		}
		return defaultJreClassLibs;
	}

	public void cleanup() {
		// reset output folder only, which is the last entry on the classpath list
		// see #getDefaultClassPaths()
		this.classpaths[this.classpaths.length - 1].reset();
	}

	private static String[] javaLibsAndOutputDir;
	
	static String[] getDefaultClassPaths() {
		if (javaLibsAndOutputDir == null)
			javaLibsAndOutputDir = Util.concatWithClassLibs(AbstractRegressionTest.OUTPUT_DIR, false);
		return javaLibsAndOutputDir;
	}
}