| /** |
| * 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 {@code and()} and {@code or()}. |
| * |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public abstract class AbstractMatcher<T> implements Matcher<T> { |
| |
| public Matcher<T> and(final Matcher<? super T> other) { |
| return new AndMatcher<T>(this, other); |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| } |