/interpreter/tags/at2-build190607/src/edu/vub/util/regexp/UncheckedRE.java
Java | 109 lines | 16 code | 7 blank | 86 comment | 0 complexity | e1572b690c7e2947a12f618ea1554bf4 MD5 | raw file
1/* gnu/regexp/UncheckedRE.java 2 Copyright (C) 2001, 2004 Free Software Foundation, Inc. 3 4This file is part of GNU Classpath. 5 6GNU Classpath is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11GNU Classpath is distributed in the hope that it will be useful, but 12WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU Classpath; see the file COPYING. If not, write to the 18Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 1902110-1301 USA. 20 21Linking this library statically or dynamically with other modules is 22making a combined work based on this library. Thus, the terms and 23conditions of the GNU General Public License cover the whole 24combination. 25 26As a special exception, the copyright holders of this library give you 27permission to link this library with independent modules to produce an 28executable, regardless of the license terms of these independent 29modules, and to copy and distribute the resulting executable under 30terms of your choice, provided that you also meet, for each linked 31independent module, the terms and conditions of the license of that 32module. An independent module is a module which is not derived from 33or based on this library. If you modify this library, you may extend 34this exception to your version of the library, but you are not 35obligated to do so. If you do not wish to do so, delete this 36exception statement from your version. */ 37 38package edu.vub.util.regexp; 39 40/** 41 * UncheckedRE is a subclass of RE that allows programmers an easier means 42 * of programmatically precompiling regular expressions. It is constructed 43 * and used in exactly the same manner as an instance of the RE class; the 44 * only difference is that its constructors do not throw REException. 45 * Instead, if a syntax error is encountered during construction, a 46 * RuntimeException will be thrown. 47 * <P> 48 * Note that this makes UncheckedRE dangerous if constructed with 49 * dynamic data. Do not use UncheckedRE unless you are completely sure 50 * that all input being passed to it contains valid, well-formed 51 * regular expressions for the syntax specified. 52 * 53 * @author <A HREF="mailto:wes@cacas.org">Wes Biggs</A> 54 * @see edu.vub.util.regexp.RE 55 * @since edu.vub.util.regexp 1.1.4 56 */ 57 58public final class UncheckedRE extends RE { 59 /** 60 * Constructs a regular expression pattern buffer without any compilation 61 * flags set, and using the default syntax (RESyntax.RE_SYNTAX_PERL5). 62 * 63 * @param pattern A regular expression pattern, in the form of a String, 64 * StringBuffer or char[]. Other input types will be converted to 65 * strings using the toString() method. 66 * @exception RuntimeException The input pattern could not be parsed. 67 * @exception NullPointerException The pattern was null. 68 */ 69 public UncheckedRE(Object pattern) { 70 this(pattern,0,RESyntax.RE_SYNTAX_PERL5); 71 } 72 73 /** 74 * Constructs a regular expression pattern buffer using the specified 75 * compilation flags and the default syntax (RESyntax.RE_SYNTAX_PERL5). 76 * 77 * @param pattern A regular expression pattern, in the form of a String, 78 * StringBuffer, or char[]. Other input types will be converted to 79 * strings using the toString() method. 80 * @param cflags The logical OR of any combination of the compilation flags in the RE class. 81 * @exception RuntimeException The input pattern could not be parsed. 82 * @exception NullPointerException The pattern was null. 83 */ 84 public UncheckedRE(Object pattern, int cflags) { 85 this(pattern,cflags,RESyntax.RE_SYNTAX_PERL5); 86 } 87 88 /** 89 * Constructs a regular expression pattern buffer using the specified 90 * compilation flags and regular expression syntax. 91 * 92 * @param pattern A regular expression pattern, in the form of a String, 93 * StringBuffer, or char[]. Other input types will be converted to 94 * strings using the toString() method. 95 * @param cflags The logical OR of any combination of the compilation flags in the RE class. 96 * @param syntax The type of regular expression syntax to use. 97 * @exception RuntimeException The input pattern could not be parsed. 98 * @exception NullPointerException The pattern was null. 99 */ 100 public UncheckedRE(Object pattern, int cflags, RESyntax syntax) { 101 try { 102 initialize(pattern,cflags,syntax,0,0); 103 } catch (REException e) { 104 throw new RuntimeException(e.getMessage()); 105 } 106 } 107} 108 109