/*
* Copyright 2014 the original author or authors.
*
* 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.gradle.model.internal.type;
import com.google.common.collect.ImmutableList;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
class ClassTypeWrapper implements TypeWrapper {
private final WeakReference<Class<?>> reference;
private final int hashCode;
public ClassTypeWrapper(Class<?> clazz) {
this.reference = new WeakReference<Class<?>>(clazz);
hashCode = clazz.hashCode();
}
public Class<?> unwrap() {
return reference.get();
}
@Override
public Class<?> getRawClass() {
return unwrap();
}
@Override
public boolean isAssignableFrom(TypeWrapper wrapper) {
return unwrap().isAssignableFrom(wrapper.getRawClass());
}
@Override
public int hashCode() {
return hashCode;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || obj.getClass() != getClass()) {
return false;
}
ClassTypeWrapper other = (ClassTypeWrapper) obj;
return unwrap().equals(other.unwrap());
}
@Override
public void collectClasses(ImmutableList.Builder<Class<?>> builder) {
builder.add(unwrap());
}
@Override
public String getRepresentation(boolean full) {
try {
return tryToGetRepresentation(full);
} catch (NoClassDefFoundError ignore) {
// This happens for IBM JDK 6 for nested interfaces -- see https://issues.apache.org/jira/browse/GROOVY-7010
// Let's try to return something as close as possible to the intended value
Class<?> clazz = unwrap();
Package pkg = clazz.getPackage();
int pkgPrefixLength = pkg == null ? 0 : pkg.getName().length() + 1;
String simpleName = clazz.getName().substring(pkgPrefixLength).replace('$', '.');
return full && pkg != null
? pkg.getName() + "." + simpleName
: simpleName;
}
}
private String tryToGetRepresentation(boolean full) {
ArrayList<Class<?>> classChain = getEnclosingClassChain();
int topLevelIndex = classChain.size() - 1;
Class<?> topLevelClass = classChain.get(topLevelIndex);
StringBuilder representation = new StringBuilder();
representation.append(
full ? topLevelClass.getName() : topLevelClass.getSimpleName());
for (int i = topLevelIndex - 1; i >= 0; i--) {
representation.append('.');
representation.append(classChain.get(i).getSimpleName());
}
return representation.toString();
}
private ArrayList<Class<?>> getEnclosingClassChain() {
ArrayList<Class<?>> classChain = new ArrayList<Class<?>>();
Class<?> clazz = unwrap();
do {
classChain.add(clazz);
clazz = clazz.getEnclosingClass();
} while (clazz != null);
return classChain;
}
}