Fixing some bugs and making the plug-in compatible with Java 1.4
[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpeclipse / phpeditor / php / SmartyDocCodeScanner.java
1 /**********************************************************************
2  Copyright (c) 2000, 2002 IBM Corp. and others.
3  All rights reserved. This program and the accompanying materials
4  are made available under the terms of the Common Public License v1.0
5  which accompanies this distribution, and is available at
6  http://www.eclipse.org/legal/cpl-v10.html
7
8  Contributors:
9  IBM Corporation - Initial implementation
10  **********************************************************************/
11 package net.sourceforge.phpeclipse.phpeditor.php;
12
13 import java.util.ArrayList;
14 import java.util.List;
15
16 import net.sourceforge.phpdt.internal.ui.text.AbstractJavaScanner;
17 import net.sourceforge.phpdt.ui.text.IColorManager;
18 import net.sourceforge.phpeclipse.IPreferenceConstants;
19 import net.sourceforge.phpeclipse.phpeditor.util.PHPWhitespaceDetector;
20
21 import org.eclipse.jface.preference.IPreferenceStore;
22 import org.eclipse.jface.text.BadLocationException;
23 import org.eclipse.jface.text.IDocument;
24 import org.eclipse.jface.text.rules.ICharacterScanner;
25 import org.eclipse.jface.text.rules.IToken;
26 import org.eclipse.jface.text.rules.IWordDetector;
27 import org.eclipse.jface.text.rules.SingleLineRule;
28 import org.eclipse.jface.text.rules.Token;
29 import org.eclipse.jface.text.rules.WhitespaceRule;
30 import org.eclipse.jface.text.rules.WordRule;
31
32 /**
33  * A rule based SmartyDoc scanner.
34  */
35 public final class SmartyDocCodeScanner extends AbstractJavaScanner {
36
37         /**
38          * A key word detector.
39          */
40         static class JavaDocKeywordDetector implements IWordDetector {
41
42                 /**
43                  * @see IWordDetector#isWordStart
44                  */
45                 public boolean isWordStart(char c) {
46                         return (c == '@');
47                 }
48
49                 /**
50                  * @see IWordDetector#isWordPart
51                  */
52                 public boolean isWordPart(char c) {
53                         return Character.isLetter(c);
54                 }
55         };
56
57         /**
58          * Detector for HTML comment delimiters.
59          */
60         static class HTMLCommentDetector implements IWordDetector {
61
62                 /**
63                  * @see IWordDetector#isWordStart
64                  */
65                 public boolean isWordStart(char c) {
66                         return (c == '<' || c == '-');
67                 }
68
69                 /**
70                  * @see IWordDetector#isWordPart
71                  */
72                 public boolean isWordPart(char c) {
73                         return (c == '-' || c == '!' || c == '>');
74                 }
75         };
76
77         class TagRule extends SingleLineRule {
78
79                 /*
80                  * @see SingleLineRule
81                  */
82                 public TagRule(IToken token) {
83                         super("<", ">", token, (char) 0); //$NON-NLS-2$ //$NON-NLS-1$
84                 }
85
86                 /*
87                  * @see SingleLineRule
88                  */
89                 public TagRule(IToken token, char escapeCharacter) {
90                         super("<", ">", token, escapeCharacter); //$NON-NLS-2$ //$NON-NLS-1$
91                 }
92
93                 private IToken checkForWhitespace(ICharacterScanner scanner) {
94
95                         try {
96
97                                 char c = getDocument().getChar(getTokenOffset() + 1);
98                                 if (!Character.isWhitespace(c))
99                                         return fToken;
100
101                         } catch (BadLocationException x) {
102                         }
103
104                         return Token.UNDEFINED;
105                 }
106
107                 /*
108                  * @see PatternRule#evaluate(ICharacterScanner)
109                  */
110                 public IToken evaluate(ICharacterScanner scanner) {
111                         IToken result = super.evaluate(scanner);
112                         if (result == fToken)
113                                 return checkForWhitespace(scanner);
114                         return result;
115                 }
116         };
117
118         private static String[] fgKeywords = {
119                         "@author", "@deprecated", "@exception", "@param", "@return", "@see", "@serial", "@serialData", "@serialField", "@since", "@throws", "@version" }; //$NON-NLS-12$ //$NON-NLS-11$ //$NON-NLS-10$ //$NON-NLS-7$ //$NON-NLS-9$ //$NON-NLS-8$ //$NON-NLS-6$ //$NON-NLS-5$ //$NON-NLS-4$ //$NON-NLS-3$ //$NON-NLS-2$ //$NON-NLS-1$
120
121         private static String[] fgTokenProperties = {
122                         IPreferenceConstants.PHPDOC_KEYWORD,
123                         IPreferenceConstants.PHPDOC_TAG, IPreferenceConstants.PHPDOC_LINK,
124                         IPreferenceConstants.PHPDOC_DEFAULT };
125
126         public SmartyDocCodeScanner(IColorManager manager, IPreferenceStore store) {
127                 super(manager, store);
128                 initialize();
129         }
130
131         public IDocument getDocument() {
132                 return fDocument;
133         }
134
135         /*
136          * @see AbstractJavaScanner#getTokenProperties()
137          */
138         protected String[] getTokenProperties() {
139                 return fgTokenProperties;
140         }
141
142         /*
143          * @see AbstractJavaScanner#createRules()
144          */
145         protected List createRules() {
146
147                 List list = new ArrayList();
148
149                 // Add rule for tags.
150                 Token token = getToken(IPreferenceConstants.PHPDOC_TAG);
151                 list.add(new TagRule(token));
152
153                 // Add rule for HTML comments
154                 WordRule wordRule = new WordRule(new HTMLCommentDetector(), token);
155                 wordRule.addWord("<!--", token); //$NON-NLS-1$
156                 wordRule.addWord("--!>", token); //$NON-NLS-1$
157                 list.add(wordRule);
158
159                 // Add rule for links.
160                 token = getToken(IPreferenceConstants.PHPDOC_LINK);
161                 list.add(new SingleLineRule("{@link", "}", token)); //$NON-NLS-2$ //$NON-NLS-1$
162
163                 // Add generic whitespace rule.
164                 list.add(new WhitespaceRule(new PHPWhitespaceDetector()));
165
166                 // Add word rule for keywords.
167                 token = getToken(IPreferenceConstants.PHPDOC_DEFAULT);
168                 wordRule = new WordRule(new JavaDocKeywordDetector(), token);
169
170                 token = getToken(IPreferenceConstants.PHPDOC_KEYWORD);
171                 for (int i = 0; i < fgKeywords.length; i++)
172                         wordRule.addWord(fgKeywords[i], token);
173                 list.add(wordRule);
174
175                 setDefaultReturnToken(getToken(IPreferenceConstants.PHPDOC_DEFAULT));
176                 return list;
177         }
178 }