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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.java.util.regex; 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.java.util.regex.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: */ 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: