92 lines
2.6 KiB
Java
92 lines
2.6 KiB
Java
/*
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* Copyright (C) 2008 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mcteam.factions.gson;
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import java.lang.reflect.ParameterizedType;
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import java.lang.reflect.Type;
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import java.util.Arrays;
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/**
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* An immutable implementation of the {@link ParameterizedType} interface. This object allows
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* us to build a reflective {@link Type} objects on demand. This object is used to support
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* serialization and deserialization of classes with an {@code ParameterizedType} field where
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* as least one of the actual type parameters is a {@code TypeVariable}.
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*
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* <p>Here's an example class:
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* <pre>
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* class Foo<T> {
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* private List<T> someList;
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*
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* Foo(List<T> list) {
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* this.someList = list;
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* }
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* }
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* </pre>
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*
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* @author Inderjeet Singh
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* @author Joel Leitch
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*/
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final class ParameterizedTypeImpl implements ParameterizedType {
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private final Type rawType;
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private final Type[] actualTypeArguments;
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private final Type owner;
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public ParameterizedTypeImpl(Type rawType, Type[] actualTypeArguments, Type owner) {
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this.rawType = rawType;
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this.actualTypeArguments = actualTypeArguments;
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this.owner = owner;
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}
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public Type getRawType() {
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return rawType;
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}
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public Type[] getActualTypeArguments() {
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return actualTypeArguments;
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}
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public Type getOwnerType() {
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return owner;
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}
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@Override
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public boolean equals(Object o) {
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if (!(o instanceof ParameterizedType)) {
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return false;
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}
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// Check that information is equivalent
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ParameterizedType that = (ParameterizedType) o;
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if (this == that) {
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return true;
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}
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Type thatOwner = that.getOwnerType();
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Type thatRawType = that.getRawType();
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return (owner == null ? thatOwner == null : owner.equals(thatOwner))
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&& (rawType == null ? thatRawType == null : rawType.equals(thatRawType))
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&& Arrays.equals(actualTypeArguments, that.getActualTypeArguments());
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}
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@Override
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public int hashCode() {
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return Arrays.hashCode(actualTypeArguments)
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^ (owner == null ? 0 : owner.hashCode())
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^ (rawType == null ? 0 : rawType.hashCode());
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}
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}
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