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1   /*
2    $Id: SummaryCollector.java,v 1.2 2006/02/20 15:16:02 jez Exp $
3   
4    Copyright 2005 (C) Jeremy Rayner. All Rights Reserved.
5   
6    Redistribution and use of this software and associated documentation
7    ("Software"), with or without modification, are permitted provided
8    that the following conditions are met:
9   
10   1. Redistributions of source code must retain copyright
11      statements and notices.  Redistributions must also contain a
12      copy of this document.
13  
14   2. Redistributions in binary form must reproduce the
15      above copyright notice, this list of conditions and the
16      following disclaimer in the documentation and/or other
17      materials provided with the distribution.
18  
19   3. The name "groovy" must not be used to endorse or promote
20      products derived from this Software without prior written
21      permission of The Codehaus.  For written permission,
22      please contact info@codehaus.org.
23  
24   4. Products derived from this Software may not be called "groovy"
25      nor may "groovy" appear in their names without prior written
26      permission of The Codehaus. "groovy" is a registered
27      trademark of The Codehaus.
28  
29   5. Due credit should be given to The Codehaus -
30      http://groovy.codehaus.org/
31  
32   THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
33   ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
34   NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
35   FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
36   THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43   OF THE POSSIBILITY OF SUCH DAMAGE.
44  
45   */
46  package org.codehaus.groovy.antlr.treewalker;
47  
48  import org.codehaus.groovy.antlr.GroovySourceAST;
49  import org.codehaus.groovy.antlr.AntlrSourceSummary;
50  import org.codehaus.groovy.antlr.syntax.AntlrClassSource;
51  import org.codehaus.groovy.antlr.parser.GroovyTokenTypes;
52  import org.codehaus.groovy.syntax.ClassSource;
53  import org.codehaus.groovy.syntax.SourceSummary;
54  
55  import java.util.Stack;
56  
57  /***
58   * A visitor for the antlr ast that creates a summary of the parsed source unit
59   *
60   * @author Jeremy Rayner
61   */
62  public class SummaryCollector extends VisitorAdapter {
63      private SourceSummary sourceSummary;
64      private Stack stack;
65  
66      public SourceSummary getSourceSummary() {
67          return sourceSummary;
68      }
69  
70      public SummaryCollector() {
71          sourceSummary = new AntlrSourceSummary();
72          stack = new Stack();
73      }
74  
75      public void setUp() {
76      }
77  
78      public void visitClassDef(GroovySourceAST t, int visit) {
79          if (visit == OPENING_VISIT) {
80              ClassSource classSource = new AntlrClassSource(
81                      t.childOfType(GroovyTokenTypes.IDENT).getText(),t
82              );
83              // Here we assume that the optional restrictions (JLS$7.6)
84              // on compilation units in file-based implementations apply
85              // http://java.sun.com/docs/books/jls/second_edition/html/packages.doc.html#26783
86              GroovySourceAST modifiers = t.childOfType(GroovyTokenTypes.MODIFIERS);
87  
88              if (isPublic(modifiers)) {
89                  sourceSummary.addPublic(classSource);
90              }
91          }
92      }
93  
94      /* figue out if this modifier node represents a public entity */
95      private boolean isPublic(GroovySourceAST modifiers) {
96          boolean isPublic = true;
97          if (modifiers != null) {
98              GroovySourceAST modprot = modifiers.childOfType(GroovyTokenTypes.LITERAL_protected);
99              GroovySourceAST modpriv = modifiers.childOfType(GroovyTokenTypes.LITERAL_private);
100             if (modpriv != null || modprot != null) {
101                 isPublic = false;
102             }
103         }
104         return isPublic;
105     }
106 
107     public void tearDown() {
108     }
109 
110     public void push(GroovySourceAST t) {
111         stack.push(t);
112     }
113     public GroovySourceAST pop() {
114         if (!stack.empty()) {
115             return (GroovySourceAST) stack.pop();
116         }
117         return null;
118     }
119 
120 }