01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.harmony.pack200.bytecode.forms;
18:
19: import org.apache.harmony.pack200.Pack200Exception;
20: import org.apache.harmony.pack200.SegmentConstantPool;
21: import org.apache.harmony.pack200.bytecode.ByteCode;
22: import org.apache.harmony.pack200.bytecode.CPString;
23: import org.apache.harmony.pack200.bytecode.ClassFileEntry;
24: import org.apache.harmony.pack200.bytecode.OperandManager;
25:
26: /**
27: * This class implements the byte code form for those
28: * bytecodes which have string references (and only
29: * string references).
30: */
31: public class StringRefForm extends SingleByteReferenceForm {
32:
33: public StringRefForm(int opcode, String name, int[] rewrite) {
34: super (opcode, name, rewrite);
35: // TODO Auto-generated constructor stub
36: }
37:
38: public StringRefForm(int opcode, String name, int[] rewrite,
39: boolean widened) {
40: this (opcode, name, rewrite);
41: this .widened = widened;
42: }
43:
44: public int getOperandType() {
45: return TYPE_STRINGREF;
46: }
47:
48: public boolean hasStringRefOperand() {
49: return true;
50: }
51:
52: protected int getOffset(OperandManager operandManager) {
53: return operandManager.nextStringRef();
54: }
55:
56: protected int getPoolID() {
57: return SegmentConstantPool.CP_STRING;
58: }
59:
60: protected void setNestedEntries(ByteCode byteCode,
61: OperandManager operandManager, int offset)
62: throws Pack200Exception {
63: SegmentConstantPool globalPool = operandManager
64: .globalConstantPool();
65: ClassFileEntry[] nested = null;
66: nested = new ClassFileEntry[] { new CPString(
67: (String) globalPool.getValue(getPoolID(), offset)) };
68: byteCode.setNested(nested);
69: if (widened) {
70: byteCode.setNestedPositions(new int[][] { { 0, 2 } });
71: } else {
72: byteCode.setNestedPositions(new int[][] { { 0, 1 } });
73: }
74: }
75: }
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