Source Code Cross Referenced for Perl5Pattern.java in  » Development » Jakarta-ORO » org » apache » oro » text » regex » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Development » Jakarta ORO » org.apache.oro.text.regex 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: Perl5Pattern.java,v 1.8 2003/11/07 20:16:25 dfs Exp $
003:         *
004:         * ====================================================================
005:         * The Apache Software License, Version 1.1
006:         *
007:         * Copyright (c) 2000 The Apache Software Foundation.  All rights
008:         * reserved.
009:         *
010:         * Redistribution and use in source and binary forms, with or without
011:         * modification, are permitted provided that the following conditions
012:         * are met:
013:         *
014:         * 1. Redistributions of source code must retain the above copyright
015:         *    notice, this list of conditions and the following disclaimer.
016:         *
017:         * 2. Redistributions in binary form must reproduce the above copyright
018:         *    notice, this list of conditions and the following disclaimer in
019:         *    the documentation and/or other materials provided with the
020:         *    distribution.
021:         *
022:         * 3. The end-user documentation included with the redistribution,
023:         *    if any, must include the following acknowledgment:
024:         *       "This product includes software developed by the
025:         *        Apache Software Foundation (http://www.apache.org/)."
026:         *    Alternately, this acknowledgment may appear in the software itself,
027:         *    if and wherever such third-party acknowledgments normally appear.
028:         *
029:         * 4. The names "Apache" and "Apache Software Foundation", "Jakarta-Oro" 
030:         *    must not be used to endorse or promote products derived from this
031:         *    software without prior written permission. For written
032:         *    permission, please contact apache@apache.org.
033:         *
034:         * 5. Products derived from this software may not be called "Apache" 
035:         *    or "Jakarta-Oro", nor may "Apache" or "Jakarta-Oro" appear in their 
036:         *    name, without prior written permission of the Apache Software Foundation.
037:         *
038:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
039:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
040:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
041:         * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
042:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
043:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
044:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
045:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
046:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
047:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
048:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
049:         * SUCH DAMAGE.
050:         * ====================================================================
051:         *
052:         * This software consists of voluntary contributions made by many
053:         * individuals on behalf of the Apache Software Foundation.  For more
054:         * information on the Apache Software Foundation, please see
055:         * <http://www.apache.org/>.
056:         */
057:
058:        package org.apache.oro.text.regex;
059:
060:        import java.io.*;
061:
062:        /**
063:         * An implementation of the Pattern interface for Perl5 regular expressions.
064:         * This class is compatible with the Perl5Compiler and Perl5Matcher
065:         * classes.  When a Perl5Compiler instance compiles a regular expression
066:         * pattern, it produces a Perl5Pattern instance containing internal
067:         * data structures used by Perl5Matcher to perform pattern matches.
068:         * This class cannot be subclassed and
069:         * cannot be directly instantiated by the programmer as it would not
070:         * make sense.  Perl5Pattern instances should only be created through calls
071:         * to a Perl5Compiler instance's compile() methods.  The class implements
072:         * the Serializable interface so that instances may be pre-compiled and
073:         * saved to disk if desired.
074:         *
075:         * @version @version@
076:         * @since 1.0
077:         * @see Perl5Compiler
078:         * @see Perl5Matcher
079:         */
080:        public final class Perl5Pattern implements  Pattern, Serializable,
081:                Cloneable {
082:            static final int _OPT_ANCH_BOL = 0x01, _OPT_ANCH_MBOL = 0x02,
083:                    _OPT_SKIP = 0x04, _OPT_IMPLICIT = 0x08;
084:            static final int _OPT_ANCH = (_OPT_ANCH_BOL | _OPT_ANCH_MBOL);
085:
086:            String _expression;
087:            char[] _program;
088:            int _mustUtility;
089:            int _back;
090:            int _minLength;
091:            int _numParentheses;
092:            boolean _isCaseInsensitive, _isExpensive;
093:            int _startClassOffset;
094:            int _anchor;
095:            int _options;
096:            char[] _mustString, _startString;
097:
098:            /**
099:             * A dummy constructor with default visibility to override the default
100:             * public constructor that would be created otherwise by the compiler.
101:             */
102:            Perl5Pattern() {
103:            }
104:
105:            /*
106:            private void readObject(ObjectInputStream stream)
107:                 throws IOException, ClassNotFoundException
108:            {
109:              stream.defaultReadObject();
110:              _beginMatchOffsets = new int[_numParentheses + 1];
111:              _endMatchOffsets   = new int[_numParentheses + 1];
112:            }
113:             */
114:
115:            /**
116:             * This method returns the string representation of the pattern.
117:             * <p>
118:             * @return The original string representation of the regular expression
119:             *         pattern.
120:             */
121:            public String getPattern() {
122:                return _expression;
123:            }
124:
125:            /**
126:             * This method returns an integer containing the compilation options used
127:             * to compile this pattern.
128:             * <p>
129:             * @return The compilation options used to compile the pattern.
130:             */
131:            public int getOptions() {
132:                return _options;
133:            }
134:
135:            /*
136:            // For testing
137:            public String toString() {
138:              return "Parens: " + _numParentheses + " " + _beginMatchOffsets.length + " "
139:                + _endMatchOffsets.length;
140:            }
141:             */
142:        }
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