1/*
2 * Copyright (C) 2007 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.android.dx.cf.iface;
18
19import com.android.dx.cf.attrib.AttConstantValue;
20import com.android.dx.rop.cst.CstNat;
21import com.android.dx.rop.cst.CstType;
22import com.android.dx.rop.cst.TypedConstant;
23
24/**
25 * Standard implementation of {@link Field}, which directly stores
26 * all the associated data.
27 */
28public final class StdField extends StdMember implements Field {
29    /**
30     * Constructs an instance.
31     *
32     * @param definingClass {@code non-null;} the defining class
33     * @param accessFlags access flags
34     * @param nat {@code non-null;} member name and type (descriptor)
35     * @param attributes {@code non-null;} list of associated attributes
36     */
37    public StdField(CstType definingClass, int accessFlags, CstNat nat,
38                    AttributeList attributes) {
39        super(definingClass, accessFlags, nat, attributes);
40    }
41
42    /** {@inheritDoc} */
43    public TypedConstant getConstantValue() {
44        AttributeList attribs = getAttributes();
45        AttConstantValue cval = (AttConstantValue)
46            attribs.findFirst(AttConstantValue.ATTRIBUTE_NAME);
47
48        if (cval == null) {
49            return null;
50        }
51
52        return cval.getConstantValue();
53    }
54}
55