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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
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MethodCaller.java | 0% | 0% | 0% | 0% |
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/*
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$Id: MethodCaller.java,v 1.2 2003/09/26 17:36:35 jstrachan Exp $
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Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
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Redistribution and use of this software and associated documentation
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("Software"), with or without modification, are permitted provided
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that the following conditions are met:
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1. Redistributions of source code must retain copyright
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statements and notices. Redistributions must also contain a
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copy of this document.
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2. Redistributions in binary form must reproduce the
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above copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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3. The name "groovy" must not be used to endorse or promote
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products derived from this Software without prior written
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permission of The Codehaus. For written permission,
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please contact info@codehaus.org.
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4. Products derived from this Software may not be called "groovy"
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nor may "groovy" appear in their names without prior written
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permission of The Codehaus. "groovy" is a registered
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trademark of The Codehaus.
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5. Due credit should be given to The Codehaus -
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http://groovy.codehaus.org/
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THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
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NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.codehaus.groovy.classgen;
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import java.lang.reflect.Method;
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import org.objectweb.asm.CodeVisitor;
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import org.objectweb.asm.Constants;
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import org.objectweb.asm.Type;
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/**
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* A helper class to invoke methods more easily in ASM
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*
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* @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
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* @version $Revision: 1.2 $
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*/
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public class MethodCaller implements Constants { |
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private int opcode; |
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private String internalName;
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private String name;
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private Class theClass;
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private String methodDescriptor;
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public static MethodCaller newStatic(Class theClass, String name) { |
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return new MethodCaller(INVOKESTATIC, theClass, name); |
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} |
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public static MethodCaller newInterface(Class theClass, String name) { |
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return new MethodCaller(INVOKEINTERFACE, theClass, name); |
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} |
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public static MethodCaller newVirtual(Class theClass, String name) { |
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return new MethodCaller(INVOKEVIRTUAL, theClass, name); |
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} |
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public MethodCaller(int opcode, Class theClass, String name) { |
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this.opcode = opcode;
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this.internalName = Type.getInternalName(theClass);
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this.theClass = theClass;
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this.name = name;
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} |
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public void call(CodeVisitor codeVisitor) { |
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codeVisitor.visitMethodInsn(opcode, internalName, name, getMethodDescriptor()); |
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} |
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public String getMethodDescriptor() {
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if (methodDescriptor == null) { |
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Method method = getMethod(); |
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methodDescriptor = Type.getMethodDescriptor(method); |
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} |
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return methodDescriptor;
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} |
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protected Method getMethod() {
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Method[] methods = theClass.getMethods(); |
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for (int i = 0; i < methods.length; i++) { |
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Method method = methods[i]; |
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if (method.getName().equals(name)) {
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return method;
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} |
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} |
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throw new ClassGeneratorException("Could not find method: " + name + " on class: " + theClass); |
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} |
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} |
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