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1
8
9 package net.sourceforge.chaperon.process.extended;
10
11 import net.sourceforge.chaperon.common.Decoder;
12
13 import org.xml.sax.ContentHandler  ;
14 import org.xml.sax.SAXException ;
15 import org.xml.sax.helpers.AttributesImpl ;
16
17 public class DefinitionStackNode extends StackNode
18 {
19 public DefinitionStackNode(ReduceAction action, int index, StackNode first, StackNode second,
20 State state, StackNode ancestor)
21 {
22 this.action = action;
23 this.index = index;
24 this.first = first;
25 this.second = second;
26 this.state = state;
27 this.ancestor = ancestor;
28 this.ancestors = new StackNode[]{ancestor};
29
30 if (first!=null)
31 {
32 this.columnNumber = first.columnNumber;
33 this.lineNumber = first.lineNumber;
34 this.length = first.length+second.length;
35 }
36 else
37 {
38 this.columnNumber = ancestor.columnNumber+ancestor.length;
39 this.lineNumber = ancestor.lineNumber;
40 this.length = 0;
41 }
42 }
43
44 public ReduceAction action = null;
45 public int index = 0; public StackNode first = null;
47 public StackNode second = null;
48
49 public boolean compare(StackNode node)
50 {
51 if (node instanceof DefinitionStackNode)
52 {
53 DefinitionStackNode definitionStackNode = (DefinitionStackNode)node;
54 if (action.symbol!=null)
55 return super.compare(node) && (action.symbol.equals(definitionStackNode.action.symbol));
56
57 return super.compare(node) && (action.pattern==definitionStackNode.action.pattern);
58 }
59 else
60 return false;
61 }
62
63 public String toString()
64 {
65 StringBuffer buffer = new StringBuffer ();
66
67 if (first!=null)
68 buffer.append(first.toString());
69
70 if (second!=null)
71 buffer.append(second.toString());
72
73 return buffer.toString();
74 }
75
76 public String toCanonicalString(ExtendedParserAutomaton automaton)
77 {
78 String text = toString();
79
80 if (text.length()<=10)
81 text = Decoder.toString(text);
82 else
83 text = "";
84
85 if (ancestors.length>1)
86 {
87 StringBuffer buffer = new StringBuffer ();
88
89 buffer.append("(");
90 for (int i = 0; i<ancestors.length; i++)
91 {
92 if (i>0)
93 buffer.append("|");
94
95 buffer.append(ancestor.toCanonicalString(automaton));
96 }
97
98 buffer.append(")");
99
100 buffer.append("<-"+automaton.indexOf(state)+":"+
101 ((action.symbol!=null) ? action.symbol : action.pattern.toString())+":"+text);
102
103 return buffer.toString();
104 }
105
106 return ((ancestor!=null) ? (ancestor.toCanonicalString(automaton)+"<-") : "")+
107 automaton.indexOf(state)+":"+
108 ((action.symbol!=null) ? action.symbol : action.pattern.toString())+":"+text;
109 }
110
111 public void toXML(ContentHandler contentHandler) throws SAXException
112 {
113 if (action.symbol!=null)
114 contentHandler.startElement(ExtendedBacktrackingParserProcessor.NS_OUTPUT, action.symbol,
115 action.symbol, new AttributesImpl ());
116
117 if (first!=null)
118 first.toXML(contentHandler);
119
120 if (second!=null)
121 second.toXML(contentHandler);
122
123 if (action.symbol!=null)
124 contentHandler.endElement(ExtendedBacktrackingParserProcessor.NS_OUTPUT, action.symbol,
125 action.symbol);
126 }
127 }
128 |
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