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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/* *******************************************************************
 * Copyright (c) 2018 Contributors
 * All rights reserved.
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Public License v 2.0
 * which accompanies this distribution and is available at
 * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
 * ******************************************************************/
package org.aspectj.weaver;

/**
 * Captures important runtime versions. Typically new versions are added here if something
 * changes in the runtime and the code generation may be able to do something different
 * (more optimal) for a later runtime.
 *
 * @author Andy Clement
 */
public enum RuntimeVersion {

	V1_2("1.2"), V1_5("1.5"), V1_6_10("1.6.10"), V1_9("1.9");

	private String[] aliases = null;

	RuntimeVersion(String... aliases) {
		this.aliases = aliases;
	}

	public static RuntimeVersion getVersionFor(String version) {
		for (RuntimeVersion candidateVersion: values()) {
			if (candidateVersion.name().equals(version)) {
				return candidateVersion;
			}
			if (candidateVersion.aliases != null) {
				for (String alias: candidateVersion.aliases) {
					if (alias.equals(version)) {
						return candidateVersion;
					}
				}
			}
		}
		return null;
	}

	public boolean isThisVersionOrLater(RuntimeVersion version) {
		return this.compareTo(version) >= 0;
	}
}