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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* 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 com.intellij.psi;
import com.intellij.openapi.extensions.AbstractExtensionPointBean;
import com.intellij.openapi.util.NotNullLazyValue;
import com.intellij.util.KeyedLazyInstance;
import com.intellij.util.xmlb.annotations.Attribute;
import org.jetbrains.annotations.NotNull;
import java.lang.reflect.Constructor;
/**
* @author peter
*/
public class WeigherExtensionPoint extends AbstractExtensionPointBean implements KeyedLazyInstance<Weigher> {
// these must be public for scrambling compatibility
@Attribute("key")
public String key;
@Attribute("implementationClass")
public String implementationClass;
@Attribute("id")
public String id;
private final NotNullLazyValue<Weigher> myHandler = new NotNullLazyValue<Weigher>() {
@Override
@NotNull
protected final Weigher compute() {
try {
Class<Weigher> tClass = findClass(implementationClass);
Constructor<Weigher> constructor = tClass.getConstructor();
constructor.setAccessible(true);
final Weigher weigher = tClass.newInstance();
weigher.setDebugName(id);
return weigher;
}
catch (InstantiationException e) {
throw new RuntimeException(e);
}
catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
catch (NoSuchMethodException e) {
throw new RuntimeException(e);
}
}
};
@Override
public Weigher getInstance() {
return myHandler.getValue();
}
@Override
public String getKey() {
return key;
}
}
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