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Groovy: A powerful, dynamic language for the JVM
/*
* Copyright 2003-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.codehaus.groovy.runtime;
import groovy.lang.Closure;
/**
* Represents wrapper around a Closure to support currying
*
* @author Jochen Theodorou
*/
public final class CurriedClosure extends Closure {
private Object[] curriedParams;
public CurriedClosure(Closure uncurriedClosure, Object[] arguments) {
super(uncurriedClosure);
curriedParams = arguments;
maximumNumberOfParameters = uncurriedClosure.getMaximumNumberOfParameters()-arguments.length;
}
public CurriedClosure(Closure uncurriedClosure, int i) {
this(uncurriedClosure, new Object[]{Integer.valueOf(i)});
}
public Object[] getUncurriedArguments(Object[] arguments) {
final Object newCurriedParams[] = new Object[curriedParams.length + arguments.length];
System.arraycopy(curriedParams, 0, newCurriedParams, 0, curriedParams.length);
System.arraycopy(arguments, 0, newCurriedParams, curriedParams.length, arguments.length);
return newCurriedParams;
}
public void setDelegate(Object delegate) {
((Closure)getOwner()).setDelegate(delegate);
}
public Object clone() {
Closure uncurriedClosure = (Closure) ((Closure) getOwner()).clone();
return new CurriedClosure(uncurriedClosure,curriedParams);
}
public Class[] getParameterTypes() {
Class[] oldParams = ((Closure)getOwner()).getParameterTypes();
Class[] newParams = new Class[oldParams.length-curriedParams.length];
System.arraycopy(oldParams, curriedParams.length, newParams, 0, newParams.length);
return newParams;
}
}