/*
* Copyright 2014 Alexey Andreev.
*
* 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.teavm.classlib.impl;
import org.teavm.dependency.*;
import org.teavm.model.ClassReader;
import org.teavm.model.MethodDescriptor;
import org.teavm.model.MethodReader;
import org.teavm.model.ValueType;
/**
*
* @author Alexey Andreev
*/
public class EnumDependencySupport implements DependencyListener {
private DependencyNode allEnums;
private volatile DependencyStack enumConstantsStack;
@Override
public void started(DependencyAgent agent) {
allEnums = agent.createNode();
}
@Override
public void classAchieved(DependencyAgent agent, String className) {
ClassReader cls = agent.getClassSource().get(className);
if (cls == null || cls.getParent() == null || !cls.getParent().equals("java.lang.Enum")) {
return;
}
allEnums.propagate(agent.getType(className));
if (enumConstantsStack != null) {
MethodReader method = cls.getMethod(new MethodDescriptor("values",
ValueType.arrayOf(ValueType.object(cls.getName()))));
if (method != null) {
agent.linkMethod(method.getReference(), enumConstantsStack).use();
}
}
}
@Override
public void methodAchieved(DependencyAgent agent, MethodDependency method) {
if (method.getReference().getClassName().equals("java.lang.Class") &&
method.getReference().getName().equals("getEnumConstantsImpl")) {
allEnums.connect(method.getResult().getArrayItem());
method.getResult().propagate(agent.getType("[java.lang.Enum"));
enumConstantsStack = method.getStack();
for (String cls : agent.getAchievableClasses()) {
classAchieved(agent, cls);
}
}
}
@Override
public void fieldAchieved(DependencyAgent agent, FieldDependency field) {
}
}