/* Copyright 2004 The Apache Software Foundation
*
* 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.jam.visitor;
import org.codehaus.jam.JClass;
import org.codehaus.jam.JMethod;
import org.codehaus.jam.JProperty;
import org.codehaus.jam.internal.elements.PropertyImpl;
import org.codehaus.jam.mutable.MClass;
import java.util.HashMap;
import java.util.Map;
/**
* @author Patrick Calahan <email: pcal-at-bea-dot-com>
*/
public class PropertyInitializer extends MVisitor {
//FIXME we may want to move to a model in which property initialization
//is done even more lazily, i.e. only when getProperties is called.
// ========================================================================
// Element visitor implementation
public void visit(MClass clazz) {
addProperties(clazz,true);
addProperties(clazz,false);
}
private void addProperties(MClass clazz, boolean declared) {
JMethod[] methods = declared ? clazz.getDeclaredMethods() :
clazz.getMethods();
Map name2prop = new HashMap();
for(int i=0; i<methods.length; i++) {
String name = methods[i].getSimpleName();
//
// process getters
//
if (name.startsWith("get") && name.length() > 3 ||
name.startsWith("is") && name.length() > 2) {
JClass typ = methods[i].getReturnType();
//FIXME we just want the name - this forces the whole thing to be resolved
// need to either getReturnTypeRef() or change ClassImpl so that it lazily builds itself
if (typ == null) continue; // must have a typ and have
if (methods[i].getParameters().length > 0) continue; //no params
if (name.startsWith("get")) {
name = name.substring(3);
} else {
name = name.substring(2);
}
JProperty prop = (JProperty)name2prop.get(name);
if (prop == null) {
prop = declared ? clazz.addNewDeclaredProperty(name,methods[i],null) :
clazz.addNewProperty(name,methods[i],null);
name2prop.put(name,prop);
} else {
if (typ.equals(prop.getType())) {
((PropertyImpl)prop).setGetter(methods[i]); // cheater
}
}
}
//
// process setters
//
if (name.startsWith("set") && name.length() > 3) {
if (methods[i].getParameters().length != 1) continue; //1 param reqd
JClass type = methods[i].getParameters()[0].getType();
name = name.substring(3);
JProperty prop = (JProperty)name2prop.get(name);
if (prop == null) {
prop = declared ? clazz.addNewDeclaredProperty(name,null,methods[i]) :
clazz.addNewProperty(name,null,methods[i]);
name2prop.put(name,prop);
} else {
if (type.equals(prop.getType())) {
// if it's the same type, cool - just add the getter
((PropertyImpl)prop).setSetter(methods[i]); // with a sneaky cast
}
}
}
}
}
}