/jEdit/tags/jedit-4-1-pre5/org/gjt/sp/jedit/syntax/ParserRule.java
Java | 272 lines | 186 code | 30 blank | 56 comment | 6 complexity | 0debf81df8d932e506ad8f95a207414d MD5 | raw file
Possible License(s): BSD-3-Clause, AGPL-1.0, Apache-2.0, LGPL-2.0, LGPL-3.0, GPL-2.0, CC-BY-SA-3.0, LGPL-2.1, GPL-3.0, MPL-2.0-no-copyleft-exception, IPL-1.0
- /*
- * ParserRule.java - Parser rule for the token marker
- * :tabSize=8:indentSize=8:noTabs=false:
- * :folding=explicit:collapseFolds=1:
- *
- * Copyright (C) 1999 mike dillon
- * Portions copyright (C) 2002 Slava Pestov
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- package org.gjt.sp.jedit.syntax;
- import gnu.regexp.*;
- import org.gjt.sp.jedit.search.RESearchMatcher;
- /**
- * A parser rule.
- * @author mike dillon, Slava Pestov
- * @version $Id: ParserRule.java 4315 2002-08-20 18:39:22Z spestov $
- */
- public class ParserRule
- {
- //{{{ Major actions (total: 8)
- public static final int MAJOR_ACTIONS = 0x000000FF;
- public static final int SEQ = 0;
- public static final int SPAN = 1 << 1;
- public static final int MARK_PREVIOUS = 1 << 2;
- public static final int MARK_FOLLOWING = 1 << 3;
- public static final int EOL_SPAN = 1 << 4;
- // public static final int MAJOR_ACTION_5 = 1 << 5;
- // public static final int MAJOR_ACTION_6 = 1 << 6;
- // public static final int MAJOR_ACTION_7 = 1 << 7;
- //}}}
- //{{{ Action hints (total: 8)
- public static final int ACTION_HINTS = 0x0000FF00;
- public static final int EXCLUDE_MATCH = 1 << 8;
- public static final int AT_LINE_START = 1 << 9;
- public static final int AT_WHITESPACE_END = 1 << 10;
- public static final int AT_WORD_START = 1 << 11;
- public static final int NO_LINE_BREAK = 1 << 12;
- public static final int NO_WORD_BREAK = 1 << 13;
- public static final int IS_ESCAPE = 1 << 14;
- public static final int REGEXP = 1 << 15;
- //}}}
- //{{{ Instance variables
- public final char hashChar;
- public final char[] start;
- // only for SEQ_REGEXP and SPAN_REGEXP rules
- public final RE startRegexp;
- public final char[] end;
- public final int action;
- public final byte token;
- public ParserRule next;
- //}}}
- //{{{ getDelegateRuleSet() method
- /**
- * Returns the parser rule set used to highlight text matched by this
- * rule. Only applicable for <code>SEQ</code>, <code>SPAN</code>,
- * <code>EOL_SPAN</code>, and <code>MARK_FOLLOWING</code> rules.
- *
- * @param tokenMarker The token marker
- */
- public ParserRuleSet getDelegateRuleSet(TokenMarker tokenMarker)
- {
- // don't worry
- if(delegate == null)
- {
- if((action & MAJOR_ACTIONS) == SEQ)
- return null;
- else
- return ParserRuleSet.getStandardRuleSet(token);
- }
- else
- {
- ParserRuleSet delegateSet = tokenMarker.getRuleSet(delegate);
- if(delegateSet == null)
- {
- return ParserRuleSet.getStandardRuleSet(
- Token.NULL);
- }
- else
- return delegateSet;
- }
- } //}}}
- //{{{ createSequenceRule() method
- public static final ParserRule createSequenceRule(String seq,
- String delegate, byte id, boolean atLineStart,
- boolean atWhitespaceEnd, boolean atWordStart)
- {
- int ruleAction = SEQ |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0);
- return new ParserRule(ruleAction, seq.charAt(0),
- seq.toCharArray(), null, null,
- delegate, id);
- } //}}}
- //{{{ createRegexpSequenceRule() method
- public static final ParserRule createRegexpSequenceRule(char hashChar,
- String seq, String delegate, byte id, boolean atLineStart,
- boolean atWhitespaceEnd, boolean atWordStart, boolean ignoreCase)
- throws REException
- {
- int ruleAction = SEQ | REGEXP |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0);
- return new ParserRule(ruleAction, hashChar,
- null, new RE("\\A" + seq,(ignoreCase ? RE.REG_ICASE : 0),
- RESearchMatcher.RE_SYNTAX_JEDIT),
- null, delegate, id);
- } //}}}
- //{{{ createSpanRule() method
- public static final ParserRule createSpanRule(String begin, String end,
- String delegate, byte id, boolean noLineBreak,
- boolean atLineStart, boolean atWhitespaceEnd, boolean atWordStart,
- boolean excludeMatch, boolean noWordBreak)
- {
- int ruleAction = SPAN |
- ((noLineBreak) ? NO_LINE_BREAK : 0) |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0) |
- ((noWordBreak) ? NO_WORD_BREAK : 0);
- return new ParserRule(ruleAction, begin.charAt(0),
- begin.toCharArray(), null,
- end.toCharArray(), delegate, id);
- } //}}}
- //{{{ createRegexpSpanRule() method
- public static final ParserRule createRegexpSpanRule(char hashChar,
- String begin, String end, String delegate, byte id,
- boolean noLineBreak, boolean atLineStart,
- boolean atWhitespaceEnd, boolean atWordStart,
- boolean excludeMatch, boolean noWordBreak, boolean ignoreCase)
- throws REException
- {
- int ruleAction = SPAN | REGEXP |
- ((noLineBreak) ? NO_LINE_BREAK : 0) |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0) |
- ((noWordBreak) ? NO_WORD_BREAK : 0);
- return new ParserRule(ruleAction, hashChar,
- null, new RE("\\A" + begin,(ignoreCase ? RE.REG_ICASE : 0),
- RESearchMatcher.RE_SYNTAX_JEDIT),
- end.toCharArray(), delegate, id);
- } //}}}
- //{{{ createEOLSpanRule() method
- public static final ParserRule createEOLSpanRule(String seq,
- String delegate, byte id, boolean atLineStart,
- boolean atWhitespaceEnd, boolean atWordStart,
- boolean excludeMatch)
- {
- int ruleAction = EOL_SPAN |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0)
- | NO_LINE_BREAK;
- return new ParserRule(ruleAction, seq.charAt(0),
- seq.toCharArray(), null, null,
- delegate, id);
- } //}}}
- //{{{ createRegexpEOLSpanRule() method
- public static final ParserRule createRegexpEOLSpanRule(
- char hashChar, String seq, String delegate, byte id,
- boolean atLineStart, boolean atWhitespaceEnd, boolean atWordStart,
- boolean excludeMatch, boolean ignoreCase)
- throws REException
- {
- int ruleAction = EOL_SPAN |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0)
- | NO_LINE_BREAK;
- return new ParserRule(ruleAction, hashChar,
- null, new RE("\\A" + seq,(ignoreCase ? RE.REG_ICASE : 0)), null,
- delegate, id);
- } //}}}
- //{{{ createMarkFollowingRule() method
- public static final ParserRule createMarkFollowingRule(String seq,
- byte id, boolean atLineStart, boolean atWhitespaceEnd,
- boolean atWordStart, boolean excludeMatch)
- {
- int ruleAction = MARK_FOLLOWING |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0);
- return new ParserRule(ruleAction, seq.charAt(0),
- seq.toCharArray(), null, null,
- null, id);
- } //}}}
- //{{{ createMarkPreviousRule() method
- public static final ParserRule createMarkPreviousRule(String seq,
- byte id, boolean atLineStart, boolean atWhitespaceEnd,
- boolean atWordStart, boolean excludeMatch)
- {
- int ruleAction = MARK_PREVIOUS |
- ((atLineStart) ? AT_LINE_START : 0) |
- ((atWhitespaceEnd) ? AT_WHITESPACE_END : 0) |
- ((atWordStart) ? AT_WORD_START : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0);
- return new ParserRule(ruleAction, seq.charAt(0),
- seq.toCharArray(), null, null,
- null, id);
- } //}}}
- //{{{ createEscapeRule() method
- public static final ParserRule createEscapeRule(String seq)
- {
- int ruleAction = IS_ESCAPE;
- return new ParserRule(ruleAction, seq.charAt(0),
- seq.toCharArray(), null, null,
- null, Token.NULL);
- } //}}}
- //{{{ Private members
- private String delegate;
- private ParserRule(int action, char hashChar, char[] start,
- RE startRegexp, char[] end, String delegate, byte token)
- {
- this.hashChar = hashChar;
- this.start = start;
- this.startRegexp = startRegexp;
- this.end = end;
- this.delegate = delegate;
- this.action = action;
- this.token = token;
- } //}}}
- }