1 /* gnu/regexp/UncheckedRE.java 2 Copyright (C) 2001, 2004 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 package gnu.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 gnu.regexp.RE 55 * @since gnu.regexp 1.1.4 56 */ 57 58 public 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 */ UncheckedRE(Object pattern)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 */ UncheckedRE(Object pattern, int cflags)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 */ UncheckedRE(Object pattern, int cflags, RESyntax syntax)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 } 108 109 110