1/*
2 * Copyright (C) 2015 Google Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package dagger.producers.monitoring;
17
18import dagger.producers.Produces;
19
20import static com.google.common.base.Preconditions.checkNotNull;
21
22/** A token that represents an individual {@linkplain Produces producer method}. */
23public final class ProducerToken {
24  private final Class<?> classToken;
25
26  private ProducerToken(Class<?> classToken) {
27    this.classToken = classToken;
28  }
29
30  /**
31   * Creates a token for a class token that represents the generated factory for a producer method.
32   *
33   * <p><b>Do not use this!</b> This is intended to be called by generated code only, and its
34   * signature may change at any time.
35   */
36  public static ProducerToken create(Class<?> classToken) {
37    return new ProducerToken(checkNotNull(classToken));
38  }
39
40  /** Two tokens are equal if they represent the same method. */
41  @Override
42  public boolean equals(Object o) {
43    if (o == this) {
44      return true;
45    } else if (o instanceof ProducerToken) {
46      ProducerToken that = (ProducerToken) o;
47      return this.classToken.equals(that.classToken);
48    } else {
49      return false;
50    }
51  }
52
53  /** Returns an appropriate hash code to match {@link #equals). */
54  @Override
55  public int hashCode() {
56    return classToken.hashCode();
57  }
58
59  /** Returns a representation of the method. */
60  @Override
61  public String toString() {
62    return classToken.toString();
63  }
64}
65