Mercurial > projects > dwt-addons

comparison dwtx/jface/text/rules/WordPatternRule.d @ 162:1a5b8f8129df

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
...
author Frank Benoit <benoit@tionex.de>
date Mon, 08 Sep 2008 00:51:37 +0200
parents 51e6e63f930e
children eb98a5cbfd78
comparison
equal deleted inserted replaced
161:f8d52b926852 162:1a5b8f8129df
54 public class WordPatternRule : SingleLineRule { 54 public class WordPatternRule : SingleLineRule {
55 55
56 /** The word detector used by this rule */ 56 /** The word detector used by this rule */
57 protected IWordDetector fDetector; 57 protected IWordDetector fDetector;
58 /** The internal buffer used for pattern detection */ 58 /** The internal buffer used for pattern detection */
59 private StringBuffer fBuffer= new StringBuffer(); 59 private StringBuffer fBuffer;
60 60
61 /** 61 /**
62 * Creates a rule for the given starting and ending word 62 * Creates a rule for the given starting and ending word
63 * pattern which, if detected, will return the specified token. 63 * pattern which, if detected, will return the specified token.
64 * A word detector is used to identify words. 64 * A word detector is used to identify words.
84 * @param endSequence the end sequence of the word pattern 84 * @param endSequence the end sequence of the word pattern
85 * @param token the token to be returned on success 85 * @param token the token to be returned on success
86 * @param escapeCharacter the escape character 86 * @param escapeCharacter the escape character
87 */ 87 */
88 public this(IWordDetector detector, String startSequence, String endSequence, IToken token, char escapeCharacter) { 88 public this(IWordDetector detector, String startSequence, String endSequence, IToken token, char escapeCharacter) {
89 fBuffer= new StringBuffer();
89 super(startSequence, endSequence, token, escapeCharacter); 90 super(startSequence, endSequence, token, escapeCharacter);
90 Assert.isNotNull(detector); 91 Assert.isNotNull(cast(Object)detector);
91 fDetector= detector; 92 fDetector= detector;
92 } 93 }
93 94
94 /** 95 /**
95 * Returns whether the end sequence was detected. 96 * Returns whether the end sequence was detected.
99 * 100 *
100 * @param scanner the scanner to be used 101 * @param scanner the scanner to be used
101 * @return <code>true</code> if the word ends on the given end sequence 102 * @return <code>true</code> if the word ends on the given end sequence
102 */ 103 */
103 protected bool endSequenceDetected(ICharacterScanner scanner) { 104 protected bool endSequenceDetected(ICharacterScanner scanner) {
104 fBuffer.setLength(0); 105 fBuffer.truncate(0);
105 int c= scanner.read(); 106 int c= scanner.read();
106 while (fDetector.isWordPart(cast(wchar) c)) { 107 while (fDetector.isWordPart(cast(char) c)) {
107 fBuffer.append(cast(wchar) c); 108 fBuffer.append(cast(char) c);
108 c= scanner.read(); 109 c= scanner.read();
109 } 110 }
110 scanner.unread(); 111 scanner.unread();
111 112
112 if (fBuffer.length() >= fEndSequence.length) { 113 if (fBuffer.length() >= fEndSequence.length) {
113 for (int i=fEndSequence.length - 1, j= fBuffer.length() - 1; i >= 0; i--, j--) { 114 for (int i=fEndSequence.length - 1, j= fBuffer.length() - 1; i >= 0; i--, j--) {
114 if (fEndSequence[i] !is fBuffer.charAt(j)) { 115 if (fEndSequence[i] !is fBuffer.slice()[j]) {
115 unreadBuffer(scanner); 116 unreadBuffer(scanner);
116 return false; 117 return false;
117 } 118 }
118 } 119 }
119 return true; 120 return true;
129 * read in as part of the start sequence expect the first one. 130 * read in as part of the start sequence expect the first one.
130 * 131 *
131 * @param scanner the scanner to be used 132 * @param scanner the scanner to be used
132 */ 133 */
133 protected void unreadBuffer(ICharacterScanner scanner) { 134 protected void unreadBuffer(ICharacterScanner scanner) {
134 fBuffer.insert(0, fStartSequence); 135 fBuffer.select(0, 0 );
136 fBuffer.replace(fStartSequence);
135 for (int i= fBuffer.length() - 1; i > 0; i--) 137 for (int i= fBuffer.length() - 1; i > 0; i--)
136 scanner.unread(); 138 scanner.unread();
137 } 139 }
138 } 140 }