FieldId.java revision 579d7739c53a2707ad711a2d2cae46d7d782f061 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
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 */
16
17package com.google.dexmaker;
18
19import com.android.dx.rop.cst.CstFieldRef;
20import com.android.dx.rop.cst.CstNat;
21import com.android.dx.rop.cst.CstString;
22
23/**
24 * A field.
25 */
26public final class FieldId<D, V> {
27    final Type<D> declaringType;
28    final Type<V> type;
29    final String name;
30
31    /** cached converted state */
32    final CstNat nat;
33    final CstFieldRef constant;
34
35    FieldId(Type<D> declaringType, Type<V> type, String name) {
36        if (declaringType == null || type == null || name == null) {
37            throw new NullPointerException();
38        }
39        this.declaringType = declaringType;
40        this.type = type;
41        this.name = name;
42        this.nat = new CstNat(new CstString(name), new CstString(type.name));
43        this.constant = new CstFieldRef(declaringType.constant, nat);
44    }
45
46    public Type<D> getDeclaringType() {
47        return declaringType;
48    }
49
50    public Type<V> getType() {
51        return type;
52    }
53
54    public String getName() {
55        return name;
56    }
57
58    @Override public boolean equals(Object o) {
59        return o instanceof FieldId
60                && ((FieldId<?, ?>) o).declaringType.equals(declaringType)
61                && ((FieldId<?, ?>) o).name.equals(name);
62    }
63
64    @Override public int hashCode() {
65        return declaringType.hashCode() + 37 * name.hashCode();
66    }
67
68    @Override public String toString() {
69        return declaringType + "." + name;
70    }
71}
72