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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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 libcore.reflect;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.Objects;
public final class ParameterizedTypeImpl implements ParameterizedType {
private final ListOfTypes args;
private final ParameterizedTypeImpl ownerType0; // Potentially unresolved.
private Type ownerTypeRes; // Potentially unresolved.
private Class rawType; // Potentially unresolved.
private final String rawTypeName;
private final ClassLoader loader;
public ParameterizedTypeImpl(ParameterizedTypeImpl ownerType, String rawTypeName,
ListOfTypes args, ClassLoader loader) {
if (args == null) {
throw new NullPointerException();
}
this.ownerType0 = ownerType;
this.rawTypeName = rawTypeName;
this.args = args;
this.loader = loader;
}
public Type[] getActualTypeArguments() {
return args.getResolvedTypes().clone();
}
public Type getOwnerType() {
if (ownerTypeRes == null) {
if (ownerType0 != null) {
ownerTypeRes = ownerType0.getResolvedType();
} else {
ownerTypeRes = getRawType().getDeclaringClass();
}
}
return ownerTypeRes;
}
public Class getRawType() {
if (rawType == null) {
// Here the actual loading of the class has to be performed and the
// Exceptions have to be re-thrown TypeNotPresent...
// How to deal with member (nested) classes?
try {
rawType = Class.forName(rawTypeName, false, loader);
} catch (ClassNotFoundException e) {
throw new TypeNotPresentException(rawTypeName, e);
}
}
return rawType;
}
Type getResolvedType() {
if (args.getResolvedTypes().length == 0) {
return getRawType();
} else {
return this;
}
}
@Override
public boolean equals(Object o) {
if (!(o instanceof ParameterizedType)) {
return false;
}
ParameterizedType that = (ParameterizedType) o;
return Objects.equals(getRawType(), that.getRawType()) &&
Objects.equals(getOwnerType(), that.getOwnerType()) &&
Arrays.equals(args.getResolvedTypes(), that.getActualTypeArguments());
}
@Override
public int hashCode() {
return 31 * (31 * Objects.hashCode(getRawType()) + Objects.hashCode(getOwnerType())) +
Arrays.hashCode(args.getResolvedTypes());
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(rawTypeName);
if (args.length() > 0) {
sb.append("<").append(args).append(">");
}
return sb.toString();
}
}
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