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1   /*
2    * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.
8    *
9    * This code is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12   * version 2 for more details (a copy is included in the LICENSE file that
13   * accompanied this code).
14   *
15   * You should have received a copy of the GNU General Public License version
16   * 2 along with this work; if not, write to the Free Software Foundation,
17   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18   *
19   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20   * or visit www.oracle.com if you need additional information or have any
21   * questions.
22   *
23   */
24  
25  package sun.jvm.hotspot.interpreter;
26  
27  import sun.jvm.hotspot.oops.*;
28  import sun.jvm.hotspot.runtime.*;
29  
30  // getfield, getstatic, putfield or putstatic
31  
32  public abstract class BytecodeGetPut extends BytecodeWithCPIndex {
33    BytecodeGetPut(Method method, int bci) {
34      super(method, bci);
35    }
36  
37    // returns the name of the accessed field
38    public Symbol name() {
39      ConstantPool cp = method().getConstants();
40      return cp.getNameRefAt(index());
41    }
42  
43    // returns the signature of the accessed field
44    public Symbol signature() {
45      ConstantPool cp = method().getConstants();
46      return cp.getSignatureRefAt(index());
47    }
48  
49    public Field getField() {
50      return method().getConstants().getFieldRefAt(index());
51    }
52  
53    public String toString() {
54      StringBuffer buf = new StringBuffer();
55      buf.append(getJavaBytecodeName());
56      buf.append(spaces);
57      buf.append('#');
58      buf.append(Integer.toString(indexForFieldOrMethod()));
59      buf.append(" [Field ");
60      StringBuffer sigBuf = new StringBuffer();
61      new SignatureConverter(signature(), sigBuf).dispatchField();
62      buf.append(sigBuf.toString().replace('/', '.'));
63      buf.append(spaces);
64      buf.append(name().asString());
65      buf.append("]");
66      if (code() != javaCode()) {
67         buf.append(spaces);
68         buf.append('[');
69         buf.append(getBytecodeName());
70         buf.append(']');
71      }
72      return buf.toString();
73    }
74  
75    public abstract boolean isStatic();
76  }