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1
31
32 package org.antlr.works.interpreter;
33
34 import org.antlr.runtime.CommonToken;
35 import org.antlr.runtime.NoViableAltException;
36 import org.antlr.runtime.tree.ParseTree;
37 import org.antlr.runtime.tree.Tree;
38 import org.antlr.tool.Grammar;
39 import org.antlr.works.awtree.AWTreeNode;
40
41 import javax.swing.tree.DefaultTreeModel  ;
42 import javax.swing.tree.MutableTreeNode ;
43 import javax.swing.tree.TreeNode ;
44 import java.awt.*;
45 import java.util.Enumeration ;
46
47 public class EditorInterpreterTreeModel extends DefaultTreeModel {
48
49 protected Grammar grammar;
50
51 public EditorInterpreterTreeModel() {
52 super(null);
53 }
54
55 public void setGrammar(Grammar grammar) {
56 this.grammar = grammar;
57 }
58
59 public void setTree(Tree tree) {
60 setRoot(new InterpreterTreeNode(null, tree));
61 }
62
63 public class InterpreterTreeNode extends AWTreeNode {
64
65 protected Tree tree;
66
67 public InterpreterTreeNode(TreeNode parent, Tree tree) {
68 this.parent = (MutableTreeNode ) parent;
69 this.tree = tree;
70 }
71
72 public TreeNode getChildAt(int childIndex) {
73 return new InterpreterTreeNode(this, tree.getChild(childIndex));
74 }
75
76 public int getChildCount() {
77 return tree.getChildCount();
78 }
79
80 public TreeNode getParent() {
81 return parent;
82 }
83
84 public int getIndex(TreeNode node) {
85 for(int i=0; i<tree.getChildCount(); i++) {
86 if(tree.getChild(i) == node)
87 return i;
88 }
89 return -1;
90 }
91
92 public boolean getAllowsChildren() {
93 return true;
94 }
95
96 public boolean isLeaf() {
97 return getChildCount() == 0;
98 }
99
100 public Enumeration children() {
101 return null;
102 }
103
104 public Object getPayload() {
105 if(tree instanceof ParseTree)
106 return ((ParseTree)tree).payload;
107 else
108 return null;
109 }
110
111 public Color getColor() {
112 return Color.black;
113 }
114
115 public String getInfoString() {
116 StringBuffer info = new StringBuffer ();
117 Object payload = getPayload();
118 if(payload instanceof CommonToken) {
119 CommonToken t = (CommonToken)payload;
120 info.append("Type: ").append(grammar.getTokenDisplayName(t.getType())).append("\n");
121 info.append("Text: ").append(t.getText()).append("\n");
122 info.append("Line: ").append(t.getLine()).append("\n");
123 info.append("Char: ").append(t.getCharPositionInLine()).append("\n");
124 info.append("Channel: ").append(t.getChannel()).append("\n");
125 } else if(payload instanceof NoViableAltException) {
126 NoViableAltException e = (NoViableAltException)payload;
127 info.append("Description: ").append(e.grammarDecisionDescription).append("\n");
128 info.append("Descision: ").append(e.decisionNumber).append("\n");
129 info.append("State: ").append(e.stateNumber).append("\n");
130 } else {
131 if(isLeaf())
132 info.append(payload.toString());
133 else
134 info.append("Rule: ").append(payload.toString());
135 }
136 return info.toString();
137 }
138
139 public String toString() {
140 Object payload = getPayload();
141 if(payload instanceof CommonToken) {
142 CommonToken t = (CommonToken)payload;
143 return t.getText();
144 } else if(payload instanceof NoViableAltException)
145 return "NoViableAltException";
146 else if(payload == null)
147 return "<null>";
148 else
149 return payload.toString();
150 }
151 }
152 }
153 |
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