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.bytecode.ByteCode;
20: import org.apache.harmony.pack200.bytecode.CodeAttribute;
21: import org.apache.harmony.pack200.bytecode.OperandManager;
22:
23: public abstract class SwitchForm extends VariableInstructionForm {
24:
25: public SwitchForm(int opcode, String name) {
26: super (opcode, name);
27: // TODO Auto-generated constructor stub
28: }
29:
30: public SwitchForm(int opcode, String name, int[] rewrite) {
31: super (opcode, name, rewrite);
32: // TODO Auto-generated constructor stub
33: }
34:
35: public int getOperandType() {
36: return TYPE_SWITCH;
37: }
38:
39: public boolean hasSwitchOperand() {
40: return true;
41: }
42:
43: /* (non-Javadoc)
44: * @see org.apache.harmony.pack200.bytecode.forms.ByteCodeForm#setByteCodeOperands(org.apache.harmony.pack200.bytecode.ByteCode, org.apache.harmony.pack200.bytecode.OperandTable, org.apache.harmony.pack200.SegmentConstantPool)
45: */
46: public void setByteCodeOperands(ByteCode byteCode,
47: OperandManager operandManager, int codeLength) {
48: }
49:
50: /* (non-Javadoc)
51: * @see org.apache.harmony.pack200.bytecode.forms.ByteCodeForm#fixUpByteCodeTargets(org.apache.harmony.pack200.bytecode.ByteCode, org.apache.harmony.pack200.bytecode.CodeAttribute)
52: */
53: public void fixUpByteCodeTargets(ByteCode byteCode,
54: CodeAttribute codeAttribute) {
55: // SwitchForms need to fix up the target of label operations
56: int[] originalTargets = byteCode.getByteCodeTargets();
57: int numberOfLabels = originalTargets.length;
58: int[] replacementTargets = new int[numberOfLabels];
59:
60: int sourceIndex = byteCode.getByteCodeIndex();
61: int sourceValue = ((Integer) codeAttribute.byteCodeOffsets
62: .get(sourceIndex)).intValue();
63: for (int index = 0; index < numberOfLabels; index++) {
64: int absoluteInstructionTargetIndex = sourceIndex
65: + originalTargets[index];
66: int targetValue = ((Integer) codeAttribute.byteCodeOffsets
67: .get(absoluteInstructionTargetIndex)).intValue();
68: replacementTargets[index] = targetValue - sourceValue;
69: }
70: int[] rewriteArray = byteCode.getRewrite();
71: for (int index = 0; index < numberOfLabels; index++) {
72: setRewrite4Bytes(replacementTargets[index], rewriteArray);
73: }
74: }
75:
76: }
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