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Java > Open Source Codes > com > puppycrawl > tools > checkstyle > checks > usage > transmogrify > ReferenceCounter


1
2 // Transmogrify License
3 //
4 // Copyright (c) 2001, ThoughtWorks, Inc.
5 // All rights reserved.
6 // Redistribution and use in source and binary forms, with or without
7 // modification, are permitted provided that the following conditions
8 // are met:
9 // - Redistributions of source code must retain the above copyright notice,
10 // this list of conditions and the following disclaimer.
11 // - Redistributions in binary form must reproduce the above copyright
12 // notice, this list of conditions and the following disclaimer in the
13 // documentation and/or other materials provided with the distribution.
14 // Neither the name of the ThoughtWorks, Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from this
16 // software without specific prior written permission.
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 // TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29 package com.puppycrawl.tools.checkstyle.checks.usage.transmogrify;
30
31 import java.util.ArrayList JavaDoc;
32 import java.util.List JavaDoc;
33 import java.util.ListIterator JavaDoc;
34
35 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
36
37 /**
38  * This class is for counting the reference
39  */
40 public class ReferenceCounter extends ReferenceTool {
41   private List JavaDoc _references = new ArrayList JavaDoc();
42   private List JavaDoc _resolvedReferences = new ArrayList JavaDoc();
43   private List JavaDoc _unresolvedReferences = new ArrayList JavaDoc();
44
45   public ReferenceCounter(SymbolTable table) {
46     super(table.getTree());
47     countReferences();
48   }
49
50   /**
51    * Return the number of references
52    */
53   public int numberOfReferences() {
54     return _references.size();
55   }
56
57   /**
58    * Return the number of resolved references
59    */
60   public int numberOfResolvedReferences() {
61     return _resolvedReferences.size();
62   }
63
64   public int numberOfUnresolvedReferences() {
65     return _unresolvedReferences.size();
66   }
67
68   public ListIterator JavaDoc getUnresolvedReferences() {
69     return _unresolvedReferences.listIterator();
70   }
71
72   private void countReferences() {
73     handleNode( _tree );
74   }
75
76   protected void handleNode( SymTabAST node ) {
77     if (node.getType() == TokenTypes.IDENT && node.isMeaningful()) {
78       _references.add( node );
79       if (node.getDefinition() != null && !(node.getDefinition() instanceof UnknownClass)) {
80             _resolvedReferences.add( node );
81       }
82       else {
83             _unresolvedReferences.add( node );
84       }
85     }
86     walkChildren( node );
87   }
88 }
89
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