1/*
2 * Copyright (C) 2017 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.io.instructions;
18
19import com.android.dx.io.IndexType;
20
21/** A decoded invoke-polymorphic instruction. */
22public class InvokePolymorphicDecodedInstruction extends DecodedInstruction {
23
24    private final int protoIndex;
25    private final int[] registers;
26
27    public InvokePolymorphicDecodedInstruction(
28            InstructionCodec format,
29            int opcode,
30            int methodIndex,
31            IndexType indexType,
32            int protoIndex,
33            int[] registers) {
34        super(format, opcode, methodIndex, indexType, 0, 0);
35        if (protoIndex != (short) protoIndex) {
36          throw new IllegalArgumentException("protoIndex doesn't fit in a short: " + protoIndex);
37        }
38        this.protoIndex = protoIndex;
39        this.registers = registers;
40    }
41
42    @Override
43    public int getRegisterCount() {
44        return registers.length;
45    }
46
47    @Override
48    public DecodedInstruction withIndex(int newIndex) {
49        throw new UnsupportedOperationException(
50                "use withProtoIndex to update both the method and proto indices for"
51                        + " invoke-polymorphic");
52    }
53
54    @Override
55    public DecodedInstruction withProtoIndex(int newIndex, int newProtoIndex) {
56        return new InvokePolymorphicDecodedInstruction(
57                getFormat(), getOpcode(), newIndex, getIndexType(), newProtoIndex, registers);
58    }
59
60    @Override
61    public int getC() {
62        return registers.length > 0 ? registers[0] : 0;
63    }
64
65    @Override
66    public int getD() {
67        return registers.length > 1 ? registers[1] : 0;
68    }
69
70    @Override
71    public int getE() {
72        return registers.length > 2 ? registers[2] : 0;
73    }
74
75    public int getF() {
76        return registers.length > 3 ? registers[3] : 0;
77    }
78
79    public int getG() {
80        return registers.length > 4 ? registers[4] : 0;
81    }
82
83    @Override
84    public short getProtoIndex() {
85        return (short) protoIndex;
86    }
87}
88