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Diffstat (limited to 'gnu/regexp/UncheckedRE.java')
-rw-r--r-- | gnu/regexp/UncheckedRE.java | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/gnu/regexp/UncheckedRE.java b/gnu/regexp/UncheckedRE.java new file mode 100644 index 000000000..660466eab --- /dev/null +++ b/gnu/regexp/UncheckedRE.java @@ -0,0 +1,109 @@ +/* gnu/regexp/UncheckedRE.java + Copyright (C) 2001, 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.regexp; + +/** + * UncheckedRE is a subclass of RE that allows programmers an easier means + * of programmatically precompiling regular expressions. It is constructed + * and used in exactly the same manner as an instance of the RE class; the + * only difference is that its constructors do not throw REException. + * Instead, if a syntax error is encountered during construction, a + * RuntimeException will be thrown. + * <P> + * Note that this makes UncheckedRE dangerous if constructed with + * dynamic data. Do not use UncheckedRE unless you are completely sure + * that all input being passed to it contains valid, well-formed + * regular expressions for the syntax specified. + * + * @author <A HREF="mailto:wes@cacas.org">Wes Biggs</A> + * @see gnu.regexp.RE + * @since gnu.regexp 1.1.4 + */ + +public final class UncheckedRE extends RE { + /** + * Constructs a regular expression pattern buffer without any compilation + * flags set, and using the default syntax (RESyntax.RE_SYNTAX_PERL5). + * + * @param pattern A regular expression pattern, in the form of a String, + * StringBuffer or char[]. Other input types will be converted to + * strings using the toString() method. + * @exception RuntimeException The input pattern could not be parsed. + * @exception NullPointerException The pattern was null. + */ + public UncheckedRE(Object pattern) { + this(pattern,0,RESyntax.RE_SYNTAX_PERL5); + } + + /** + * Constructs a regular expression pattern buffer using the specified + * compilation flags and the default syntax (RESyntax.RE_SYNTAX_PERL5). + * + * @param pattern A regular expression pattern, in the form of a String, + * StringBuffer, or char[]. Other input types will be converted to + * strings using the toString() method. + * @param cflags The logical OR of any combination of the compilation flags in the RE class. + * @exception RuntimeException The input pattern could not be parsed. + * @exception NullPointerException The pattern was null. + */ + public UncheckedRE(Object pattern, int cflags) { + this(pattern,cflags,RESyntax.RE_SYNTAX_PERL5); + } + + /** + * Constructs a regular expression pattern buffer using the specified + * compilation flags and regular expression syntax. + * + * @param pattern A regular expression pattern, in the form of a String, + * StringBuffer, or char[]. Other input types will be converted to + * strings using the toString() method. + * @param cflags The logical OR of any combination of the compilation flags in the RE class. + * @param syntax The type of regular expression syntax to use. + * @exception RuntimeException The input pattern could not be parsed. + * @exception NullPointerException The pattern was null. + */ + public UncheckedRE(Object pattern, int cflags, RESyntax syntax) { + try { + initialize(pattern,cflags,syntax,0,0); + } catch (REException e) { + throw new RuntimeException(e.getMessage()); + } + } +} + + |