1 package org.apache.oro.text.regex; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2000 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation", "Jakarta-Oro" 29 * must not be used to endorse or promote products derived from this 30 * software without prior written permission. For written 31 * permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache" 34 * or "Jakarta-Oro", nor may "Apache" or "Jakarta-Oro" appear in their 35 * name, without prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>. 55 * 56 * Portions of this software are based upon software originally written 57 * by Daniel F. Savarese. We appreciate his contributions. 58 */ 59 60 /** 61 * The Pattern interface allows multiple representations of a regular 62 * expression to be defined. In general, different regular expression 63 * compilers will produce different types of pattern representations. 64 * Some will produce state transition tables derived from syntax trees, 65 * others will produce byte code representations of an NFA, etc. The 66 * Pattern interface does not impose any specific internal pattern 67 * representation, and consequently, Pattern implementations are not meant 68 * to be interchangeable among differing PatternCompiler and PatternMatcher 69 * implementations. The documentation accompanying a specific implementation 70 * will define what other classes a Pattern can interact with. 71 72 @author <a HREF="dfs@savarese.org">Daniel F. Savarese</a> 73 @version $Id: Pattern.java,v 1.1.1.1 2000/07/23 23:08:51 jon Exp $ 74 75 * @see PatternCompiler 76 * @see PatternMatcher 77 */ 78 public interface Pattern { 79 80 /** 81 * This method returns the string representation of the pattern. Its 82 * purpose is to allow a pattern to be reconstructed after compilation. 83 * In other words, when you compile a pattern, the resulting data 84 * structures bear no relation to the string defining the pattern. 85 * It is often useful to be able to access the string defining a pattern 86 * after it has been compiled. 87 * <p> 88 * @return The original string representation of the regular expression 89 * pattern. 90 */ 91 public String getPattern(); 92 93 94 95 /** 96 * This method returns an integer containing the compilation options used 97 * to compile this pattern. 98 * <p> 99 * @return The compilation options used to compile the pattern. 100 */ 101 public int getOptions(); 102 } 103