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1   /*
2    * Copyright (c) 1999, 2011, 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.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22   * or visit www.oracle.com if you need additional information or have any
23   * questions.
24   */
25  
26  /*
27   * This source code is provided to illustrate the usage of a given feature
28   * or technique and has been deliberately simplified. Additional steps
29   * required for a production-quality application, such as security checks,
30   * input validation and proper error handling, might not be present in
31   * this sample code.
32   */
33  
34  
35  package com.sun.tools.example.debug.bdi;
36  
37  import com.sun.jdi.*;
38  
39  class SourceNameReferenceTypeSpec implements ReferenceTypeSpec {
40      final String sourceName;
41      final int linenumber;
42  
43      SourceNameReferenceTypeSpec(String sourceName, int linenumber) {
44          this.sourceName = sourceName;
45          this.linenumber = linenumber;
46      }
47  
48      /**
49       * Does the specified ReferenceType match this spec.
50       */
51      @Override
52      public boolean matches(ReferenceType refType) {
53          try {
54              if (refType.sourceName().equals(sourceName)) {
55                  try {
56                      refType.locationsOfLine(linenumber);
57                      // if we don't throw an exception then it was found
58                      return true;
59                  } catch(AbsentInformationException exc) {
60                  } catch(ObjectCollectedException  exc) {
61                  }
62              }
63          } catch(AbsentInformationException exc) {
64              // for sourceName(), fall through
65          }
66          return false;
67      }
68  
69      @Override
70      public int hashCode() {
71          return sourceName.hashCode() + linenumber;
72      }
73  
74      @Override
75      public boolean equals(Object obj) {
76          if (obj instanceof SourceNameReferenceTypeSpec) {
77              SourceNameReferenceTypeSpec spec = (SourceNameReferenceTypeSpec)obj;
78  
79              return sourceName.equals(spec.sourceName) &&
80                                (linenumber == spec.linenumber);
81          } else {
82              return false;
83          }
84      }
85  
86      @Override
87      public String toString() {
88          return sourceName + "@" + linenumber;
89      }
90  }