/*
 * Copyright (C) 2006 Google Inc.
 *
 * 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.google.inject.matcher;

import java.io.Serializable;

Implements and() and or().
Author:crazybob@google.com (Bob Lee)
/** * Implements {@code and()} and {@code or()}. * * @author crazybob@google.com (Bob Lee) */
public abstract class AbstractMatcher<T> implements Matcher<T> { @Override public Matcher<T> and(final Matcher<? super T> other) { return new AndMatcher<T>(this, other); } @Override public Matcher<T> or(Matcher<? super T> other) { return new OrMatcher<T>(this, other); } private static class AndMatcher<T> extends AbstractMatcher<T> implements Serializable { private final Matcher<? super T> a, b; public AndMatcher(Matcher<? super T> a, Matcher<? super T> b) { this.a = a; this.b = b; } @Override public boolean matches(T t) { return a.matches(t) && b.matches(t); } @Override public boolean equals(Object other) { return other instanceof AndMatcher && ((AndMatcher) other).a.equals(a) && ((AndMatcher) other).b.equals(b); } @Override public int hashCode() { return 41 * (a.hashCode() ^ b.hashCode()); } @Override public String toString() { return "and(" + a + ", " + b + ")"; } private static final long serialVersionUID = 0; } private static class OrMatcher<T> extends AbstractMatcher<T> implements Serializable { private final Matcher<? super T> a, b; public OrMatcher(Matcher<? super T> a, Matcher<? super T> b) { this.a = a; this.b = b; } @Override public boolean matches(T t) { return a.matches(t) || b.matches(t); } @Override public boolean equals(Object other) { return other instanceof OrMatcher && ((OrMatcher) other).a.equals(a) && ((OrMatcher) other).b.equals(b); } @Override public int hashCode() { return 37 * (a.hashCode() ^ b.hashCode()); } @Override public String toString() { return "or(" + a + ", " + b + ")"; } private static final long serialVersionUID = 0; } }