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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) 2005 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
 *
 * Contributors:
 *   Adrian Colyer			Initial implementation
 * ******************************************************************/
package org.aspectj.internal.lang.reflect;

import java.lang.reflect.Method;
import java.util.StringTokenizer;

import org.aspectj.lang.reflect.AjType;
import org.aspectj.lang.reflect.AjTypeSystem;
import org.aspectj.lang.reflect.Pointcut;
import org.aspectj.lang.reflect.PointcutExpression;

/**
 * @author colyer
 *
 */
public class PointcutImpl implements Pointcut {

	private final String name;
	private final PointcutExpression pc;
	private final Method baseMethod;
	private final AjType declaringType;
	private String[] parameterNames = new String[0];

	protected PointcutImpl(String name, String pc, Method method, AjType declaringType, String pNames) {
		this.name = name;
		this.pc = new PointcutExpressionImpl(pc);
		this.baseMethod = method;
		this.declaringType = declaringType;
		this.parameterNames = splitOnComma(pNames);
	}

	/* (non-Javadoc)
	 * @see org.aspectj.lang.reflect.Pointcut#getPointcutExpression()
	 */
	public PointcutExpression getPointcutExpression() {
		return pc;
	}

	public String getName() {
		return name;
	}

	public int getModifiers() {
		return baseMethod.getModifiers();
	}

	public AjType[] getParameterTypes() {
		Class[] baseParamTypes =  baseMethod.getParameterTypes();
		AjType[] ajParamTypes = new AjType[baseParamTypes.length];
		for (int i = 0; i < ajParamTypes.length; i++) {
			ajParamTypes[i] = AjTypeSystem.getAjType(baseParamTypes[i]);
		}
		return ajParamTypes;
	}

	public AjType getDeclaringType() {
		return declaringType;
	}

	public String[] getParameterNames() {
		return parameterNames;
	}

	private String[] splitOnComma(String s) {
		StringTokenizer strTok = new StringTokenizer(s,",");
		String[] ret = new String[strTok.countTokens()];
		for (int i = 0; i < ret.length; i++) {
			ret[i] = strTok.nextToken().trim();
		}
		return ret;
	}

	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(getName());
		sb.append("(");
		AjType[] ptypes = getParameterTypes();
		for (int i = 0; i < ptypes.length; i++) {
			sb.append(ptypes[i].getName());
			if (this.parameterNames != null && this.parameterNames[i] != null) {
				sb.append(" ");
				sb.append(this.parameterNames[i]);
			}
			if (i+1 < ptypes.length) sb.append(",");
		}
		sb.append(") : ");
		sb.append(getPointcutExpression().asString());
		return sb.toString();
	}
}