/jEdit/tags/jedit-4-2-pre4/org/gjt/sp/jedit/syntax/ParserRule.java
Java | 235 lines | 154 code | 30 blank | 51 comment | 4 complexity | 4d3e08af22d4902057d3f8657d34b70e 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.*;
- /**
- * A parser rule.
- * @author mike dillon, Slava Pestov
- * @version $Id: ParserRule.java 4655 2003-04-28 18:52:37Z spestov $
- */
- public class ParserRule
- {
- /**
- * Perl5 syntax with character classes enabled.
- * @since jEdit 4.2pre1
- */
- // copy and paste from RESyntaxMatcher to make syntax package
- // independent of jEdit itself
- public static final RESyntax RE_SYNTAX_JEDIT
- = new RESyntax(RESyntax.RE_SYNTAX_PERL5)
- .set(RESyntax.RE_CHAR_CLASSES)
- .setLineSeparator("\n");
- //{{{ Major actions
- 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;
- //}}}
- //{{{ Action hints
- public static final int ACTION_HINTS = 0x0000FF00;
- public static final int EXCLUDE_MATCH = 1 << 8;
- public static final int NO_LINE_BREAK = 1 << 9;
- public static final int NO_WORD_BREAK = 1 << 10;
- public static final int IS_ESCAPE = 1 << 11;
- public static final int NO_ESCAPE = 1 << 12;
- public static final int REGEXP = 1 << 13;
- //}}}
- //{{{ Position match hints
- public static final int AT_LINE_START = 1 << 1;
- public static final int AT_WHITESPACE_END = 1 << 2;
- public static final int AT_WORD_START = 1 << 3;
- //}}}
- //{{{ Instance variables
- public final char hashChar;
- public final int startPosMatch;
- public final char[] start;
- public final RE startRegexp;
- public final int endPosMatch;
- public final char[] end;
- public final int action;
- public final byte token;
- public ParserRuleSet delegate;
- public ParserRule next;
- //}}}
- //{{{ createSequenceRule() method
- public static final ParserRule createSequenceRule(
- int posMatch, String seq, ParserRuleSet delegate, byte id)
- {
- int ruleAction = SEQ;
- return new ParserRule(SEQ, seq.charAt(0),
- posMatch, seq.toCharArray(), null,
- 0, null, delegate, id);
- } //}}}
- //{{{ createRegexpSequenceRule() method
- public static final ParserRule createRegexpSequenceRule(
- char hashChar, int posMatch, String seq,
- ParserRuleSet delegate, byte id, boolean ignoreCase)
- throws REException
- {
- return new ParserRule(SEQ | REGEXP, hashChar, posMatch,
- null, new RE("\\A" + seq,(ignoreCase ? RE.REG_ICASE : 0),
- RE_SYNTAX_JEDIT), 0,
- null, delegate, id);
- } //}}}
- //{{{ createSpanRule() method
- public static final ParserRule createSpanRule(
- int startPosMatch, String start, int endPosMatch, String end,
- ParserRuleSet delegate, byte id, boolean excludeMatch,
- boolean noLineBreak, boolean noWordBreak, boolean noEscape)
- {
- int ruleAction = SPAN |
- ((noLineBreak) ? NO_LINE_BREAK : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0) |
- ((noWordBreak) ? NO_WORD_BREAK : 0) |
- ((noEscape) ? NO_ESCAPE : 0);
- return new ParserRule(ruleAction, start.charAt(0), startPosMatch,
- start.toCharArray(), null,
- endPosMatch, end.toCharArray(),
- delegate, id);
- } //}}}
- //{{{ createRegexpSpanRule() method
- public static final ParserRule createRegexpSpanRule(
- char hashChar, int startPosMatch, String start,
- int endPosMatch, String end, ParserRuleSet delegate, byte id,
- boolean excludeMatch, boolean noLineBreak, boolean noWordBreak,
- boolean ignoreCase, boolean noEscape)
- throws REException
- {
- int ruleAction = SPAN | REGEXP |
- ((noLineBreak) ? NO_LINE_BREAK : 0) |
- ((excludeMatch) ? EXCLUDE_MATCH : 0) |
- ((noWordBreak) ? NO_WORD_BREAK : 0) |
- ((noEscape) ? NO_ESCAPE : 0);
- return new ParserRule(ruleAction, hashChar, startPosMatch, null,
- new RE("\\A" + start,(ignoreCase ? RE.REG_ICASE : 0),
- RE_SYNTAX_JEDIT), endPosMatch,
- end.toCharArray(), delegate, id);
- } //}}}
- //{{{ createEOLSpanRule() method
- public static final ParserRule createEOLSpanRule(
- int posMatch, String seq, ParserRuleSet delegate, byte id,
- boolean excludeMatch)
- {
- int ruleAction = EOL_SPAN |
- ((excludeMatch) ? EXCLUDE_MATCH : 0)
- | NO_LINE_BREAK;
- return new ParserRule(ruleAction, seq.charAt(0), posMatch,
- seq.toCharArray(), null, 0, null,
- delegate, id);
- } //}}}
- //{{{ createRegexpEOLSpanRule() method
- public static final ParserRule createRegexpEOLSpanRule(
- char hashChar, int posMatch, String seq, ParserRuleSet delegate,
- byte id, boolean excludeMatch, boolean ignoreCase)
- throws REException
- {
- int ruleAction = EOL_SPAN | REGEXP |
- ((excludeMatch) ? EXCLUDE_MATCH : 0)
- | NO_LINE_BREAK;
- return new ParserRule(ruleAction, hashChar, posMatch,
- null, new RE("\\A" + seq,(ignoreCase ? RE.REG_ICASE : 0),
- RE_SYNTAX_JEDIT), 0, null,
- delegate, id);
- } //}}}
- //{{{ createMarkFollowingRule() method
- public static final ParserRule createMarkFollowingRule(
- int posMatch, String seq, byte id, boolean excludeMatch)
- {
- int ruleAction = MARK_FOLLOWING |
- ((excludeMatch) ? EXCLUDE_MATCH : 0);
- return new ParserRule(ruleAction, seq.charAt(0), posMatch,
- seq.toCharArray(), null, 0, null, null, id);
- } //}}}
- //{{{ createMarkPreviousRule() method
- public static final ParserRule createMarkPreviousRule(
- int posMatch, String seq, byte id, boolean excludeMatch)
- {
- int ruleAction = MARK_PREVIOUS |
- ((excludeMatch) ? EXCLUDE_MATCH : 0);
- return new ParserRule(ruleAction, seq.charAt(0), posMatch,
- seq.toCharArray(), null, 0, null, null, id);
- } //}}}
- //{{{ createEscapeRule() method
- public static final ParserRule createEscapeRule(String seq)
- {
- int ruleAction = IS_ESCAPE;
- return new ParserRule(ruleAction, seq.charAt(0),
- 0, seq.toCharArray(), null, 0, null,
- null, Token.NULL);
- } //}}}
- //{{{ Private members
- private ParserRule(int action, char hashChar,
- int startPosMatch, char[] start, RE startRegexp,
- int endPosMatch, char[] end,
- ParserRuleSet delegate, byte token)
- {
- this.action = action;
- this.hashChar = hashChar;
- this.startPosMatch = startPosMatch;
- this.start = start;
- this.startRegexp = startRegexp;
- this.endPosMatch = endPosMatch;
- this.end = end;
- this.delegate = delegate;
- this.token = token;
- if(this.delegate == null)
- {
- if((action & MAJOR_ACTIONS) != SEQ)
- {
- this.delegate = ParserRuleSet.getStandardRuleSet(token);
- }
- }
- } //}}}
- }