/*
* Copyright (c) 2003 The Visigoth Software Society. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Visigoth Software Society (http://www.visigoths.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
* project contributors may be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
* nor may "FreeMarker" or "Visigoth" appear in their names
* without prior written permission of the Visigoth Software Society.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Visigoth Software Society. For more
* information on the Visigoth Software Society, please see
* http://www.visigoths.org/
*/
package freemarker.ext.beans;
import java.lang.reflect.Member;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import freemarker.template.TemplateModelException;
/**
* @author Attila Szegedi
* @version $Id: $
*/
abstract class OverloadedMethod {
static final Object NO_SUCH_METHOD = new Object();
static final Object AMBIGUOUS_METHOD = new Object();
static final Object[] EMPTY_ARGS = new Object[0];
private Class[][] marshalTypes;
// TODO: make it not concurrent
private final Map selectorCache = new HashMap();
private final List members = new LinkedList();
private final Map signatures = new HashMap();
void addMember(Member member) {
members.add(member);
Class[] argTypes = MethodUtilities.getParameterTypes(member);
int l = argTypes.length;
signatures.put(member, argTypes.clone());
onAddSignature(member, argTypes);
if(marshalTypes == null) {
marshalTypes = new Class[l + 1][];
marshalTypes[l] = argTypes;
updateSignature(l);
}
else if(marshalTypes.length <= l) {
Class[][] newMarshalTypes = new Class[l + 1][];
System.arraycopy(marshalTypes, 0, newMarshalTypes, 0, marshalTypes.length);
marshalTypes = newMarshalTypes;
marshalTypes[l] = argTypes;
updateSignature(l);
}
else {
Class[] oldTypes = marshalTypes[l];
if(oldTypes == null) {
marshalTypes[l] = argTypes;
}
else {
for(int i = 0; i < oldTypes.length; ++i) {
oldTypes[i] = MethodUtilities.getMostSpecificCommonType(oldTypes[i], argTypes[i]);
}
}
updateSignature(l);
}
afterSignatureAdded(l);
}
Class[] getSignature(Member member) {
return (Class[])signatures.get(member);
}
Class[][] getMarshalTypes() {
return marshalTypes;
}
Object getMemberForArgs(Object[] args, boolean varArg) {
ClassString argTypes = new ClassString(args);
Object objMember;
synchronized(selectorCache) {
objMember = selectorCache.get(argTypes);
if(objMember == null) {
objMember = argTypes.getMostSpecific(members, varArg);
selectorCache.put(argTypes, objMember);
}
}
return objMember;
}
abstract void onAddSignature(Member member, Class[] argTypes);
abstract void updateSignature(int l);
abstract void afterSignatureAdded(int l);
abstract Object getMemberAndArguments(List arguments,
BeansWrapper w) throws TemplateModelException;
}
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