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Java > Open Source Codes > org > antlr > works > ate > syntax > generic > ATESyntaxEngine


1 /*
2
3 [The "BSD licence"]
4 Copyright (c) 2005 Jean Bovet
5 All rights reserved.
6
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions
9 are met:
10
11 1. Redistributions of source code must retain the above copyright
12 notice, this list of conditions and the following disclaimer.
13 2. Redistributions in binary form must reproduce the above copyright
14 notice, this list of conditions and the following disclaimer in the
15 documentation and/or other materials provided with the distribution.
16 3. The name of the author may not be used to endorse or promote products
17 derived from this software without specific prior written permission.
18
19 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30 */
31
32 package org.antlr.works.ate.syntax.generic;
33
34 import org.antlr.works.ate.syntax.misc.ATELine;
35 import org.antlr.works.ate.syntax.misc.ATEToken;
36
37 import javax.swing.text.AttributeSet JavaDoc;
38 import java.util.ArrayList JavaDoc;
39 import java.util.List JavaDoc;
40
41 public abstract class ATESyntaxEngine {
42
43     protected ATESyntaxEngineDelegate delegate;
44
45     protected ATESyntaxLexer lexer;
46     protected ATESyntaxParser parser;
47
48     protected List JavaDoc<ATEToken> tokens;
49
50     protected static int delay = 250;
51
52     public ATESyntaxEngine() {
53         lexer = createLexer();
54         parser = createParser();
55     }
56
57     public void setDelegate(ATESyntaxEngineDelegate delegate) {
58         this.delegate = delegate;
59     }
60
61     public static void setDelay(int delay) {
62         ATESyntaxEngine.delay = delay;
63     }
64
65     public synchronized List JavaDoc<ATEToken> getTokens() {
66         return tokens;
67     }
68
69     public synchronized List JavaDoc<ATELine> getLines() {
70         return lexer.getLines();
71     }
72
73     public synchronized int getMaxLines() {
74         return lexer.getLineNumber();
75     }
76
77     public ATESyntaxLexer getLexer() {
78         return lexer;
79     }
80
81     public ATESyntaxParser getParser() {
82         return parser;
83     }
84
85     protected synchronized void lexerDidRun(ATESyntaxLexer lexer) {
86     }
87
88     protected synchronized void parserDidRun(ATESyntaxParser parser) {
89     }
90
91     public abstract ATESyntaxLexer createLexer();
92     public abstract ATESyntaxParser createParser();
93     public abstract AttributeSet JavaDoc getAttributeForToken(ATEToken token);
94
95     public void refreshColoring() {
96
97     }
98
99     public void processSyntax() {
100         // First run the lexer
101 lexer.tokenize(delegate.getText());
102         tokens = new ArrayList JavaDoc<ATEToken>(lexer.getTokens());
103         lexerDidRun(lexer);
104
105         // And then the parser if it exists
106 if(parser != null) {
107             parser.parse(tokens);
108             parserDidRun(parser);
109         }
110     }
111
112     public void process() {
113         delegate.ateEngineWillParse();
114         processSyntax();
115         delegate.ateEngineDidParse();
116     }
117
118 }
119
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