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


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
32 public abstract class ReferenceTool {
33   protected SymTabAST _tree = null;
34
35   public ReferenceTool(SymTabAST tree) {
36     _tree = tree;
37   }
38
39   protected void walkChildren( SymTabAST node ) {
40     if ( node.getFirstChild() != null ) {
41       walkSelfAndSiblings( (SymTabAST)node.getFirstChild() );
42     }
43   }
44
45   private void walkSelfAndSiblings( SymTabAST node ) {
46     handleNode( node );
47     SymTabAST sibling = (SymTabAST)node.getNextSibling();
48     while ( sibling != null ) {
49       handleNode( sibling );
50       sibling = (SymTabAST)sibling.getNextSibling();
51     }
52   }
53
54   protected abstract void handleNode(SymTabAST node);
55 }
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