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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  You may obtain a copy of the License at
8    *
9    *     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.commons.compress.harmony.unpack200.bytecode.forms;
18  
19  import org.apache.commons.compress.harmony.unpack200.SegmentConstantPool;
20  import org.apache.commons.compress.harmony.unpack200.bytecode.ByteCode;
21  import org.apache.commons.compress.harmony.unpack200.bytecode.CPInterfaceMethodRef;
22  import org.apache.commons.compress.harmony.unpack200.bytecode.OperandManager;
23  
24  /**
25   * This class implements the byte code form for those bytecodes which have IMethod references (and only IMethod references).
26   */
27  public class IMethodRefForm extends ReferenceForm {
28  
29      public IMethodRefForm(final int opcode, final String name, final int[] rewrite) {
30          super(opcode, name, rewrite);
31      }
32  
33      @Override
34      protected int getOffset(final OperandManager operandManager) {
35          return operandManager.nextIMethodRef();
36      }
37  
38      @Override
39      protected int getPoolID() {
40          return SegmentConstantPool.CP_IMETHOD;
41      }
42  
43      /*
44       * (non-Javadoc)
45       *
46       * @see org.apache.commons.compress.harmony.unpack200.bytecode.forms.ByteCodeForm#setByteCodeOperands(org.apache.commons.
47       * compress.harmony.unpack200.bytecode.ByteCode, org.apache.commons.compress.harmony.unpack200.bytecode.OperandTable,
48       * org.apache.commons.compress.harmony.unpack200.Segment)
49       */
50      @Override
51      public void setByteCodeOperands(final ByteCode byteCode, final OperandManager operandManager, final int codeLength) {
52          super.setByteCodeOperands(byteCode, operandManager, codeLength);
53          final int count = ((CPInterfaceMethodRef) byteCode.getNestedClassFileEntries()[0]).invokeInterfaceCount();
54          byteCode.getRewrite()[3] = count;
55      }
56  }