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Viewing changes to src/main/org/codehaus/groovy/runtime/CurriedClosure.java

  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2009-05-19 21:49:37 UTC
  • mfrom: (3.2.4 squeeze)
  • Revision ID: james.westby@ubuntu.com-20090519214937-56mctwb05t3xd63r
Tags: 1.6.3-1
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src/main/org/codehaus/groovy/runtime/CurriedClosure.java
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/*
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 * Copyright 2003-2007 the original author or authors.
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13
 
 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package org.codehaus.groovy.runtime;
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import groovy.lang.Closure;
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/**
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 * Represents wrapper around a Closure to support currying
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 * 
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 * @author Jochen Theodorou
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 */
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public final class CurriedClosure extends Closure {
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    private Object[] curriedParams;
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    public CurriedClosure(Closure uncurriedClosure, Object[] arguments) {
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        super(uncurriedClosure);
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        curriedParams = arguments;
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        maximumNumberOfParameters = uncurriedClosure.getMaximumNumberOfParameters()-arguments.length;
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    }
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    public CurriedClosure(Closure uncurriedClosure, int i) {
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        this(uncurriedClosure, new Object[]{Integer.valueOf(i)});
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    }
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    public Object[] getUncurriedArguments(Object[] arguments) {
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        final Object newCurriedParams[] = new Object[curriedParams.length + arguments.length];
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        System.arraycopy(curriedParams, 0, newCurriedParams, 0, curriedParams.length);
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        System.arraycopy(arguments, 0, newCurriedParams, curriedParams.length, arguments.length);
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        return newCurriedParams;        
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    }
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    public void setDelegate(Object delegate) {
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        ((Closure)getOwner()).setDelegate(delegate);
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    }
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    public Object clone() {
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        Closure uncurriedClosure = (Closure) ((Closure) getOwner()).clone();
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        return new CurriedClosure(uncurriedClosure,curriedParams);
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    }
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    public Class[] getParameterTypes() {
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        Class[] oldParams = ((Closure)getOwner()).getParameterTypes();
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        Class[] newParams = new Class[oldParams.length-curriedParams.length];
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        System.arraycopy(oldParams, curriedParams.length, newParams, 0, newParams.length);
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        return newParams;  
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    }
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}
 
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/*
 
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 * Copyright 2003-2007 the original author or authors.
 
3
 *
 
4
 * Licensed under the Apache License, Version 2.0 (the "License");
 
5
 * you may not use this file except in compliance with the License.
 
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 * You may obtain a copy of the License at
 
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 *
 
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 *     http://www.apache.org/licenses/LICENSE-2.0
 
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 *
 
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 * Unless required by applicable law or agreed to in writing, software
 
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 * distributed under the License is distributed on an "AS IS" BASIS,
 
12
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 
13
 * See the License for the specific language governing permissions and
 
14
 * limitations under the License.
 
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 */
 
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package org.codehaus.groovy.runtime;
 
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import groovy.lang.Closure;
 
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/**
 
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 * Represents wrapper around a Closure to support currying
 
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 * 
 
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 * @author Jochen Theodorou
 
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 */
 
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public final class CurriedClosure extends Closure {
 
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    private Object[] curriedParams;
 
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    public CurriedClosure(Closure uncurriedClosure, Object[] arguments) {
 
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        super(uncurriedClosure);
 
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        curriedParams = arguments;
 
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        maximumNumberOfParameters = uncurriedClosure.getMaximumNumberOfParameters()-arguments.length;
 
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    }
 
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    public CurriedClosure(Closure uncurriedClosure, int i) {
 
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        this(uncurriedClosure, new Object[]{Integer.valueOf(i)});
 
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    }
 
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    public Object[] getUncurriedArguments(Object[] arguments) {
 
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        final Object newCurriedParams[] = new Object[curriedParams.length + arguments.length];
 
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        System.arraycopy(curriedParams, 0, newCurriedParams, 0, curriedParams.length);
 
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        System.arraycopy(arguments, 0, newCurriedParams, curriedParams.length, arguments.length);
 
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        return newCurriedParams;        
 
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    }
 
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    public void setDelegate(Object delegate) {
 
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        ((Closure)getOwner()).setDelegate(delegate);
 
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    }
 
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    public Object clone() {
 
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        Closure uncurriedClosure = (Closure) ((Closure) getOwner()).clone();
 
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        return new CurriedClosure(uncurriedClosure,curriedParams);
 
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    }
 
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    public Class[] getParameterTypes() {
 
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        Class[] oldParams = ((Closure)getOwner()).getParameterTypes();
 
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        Class[] newParams = new Class[oldParams.length-curriedParams.length];
 
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        System.arraycopy(oldParams, curriedParams.length, newParams, 0, newParams.length);
 
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        return newParams;  
 
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    }
 
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}