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Diffstat (limited to 'libjava/gnu/xml/xpath/BooleanFunction.java')
-rw-r--r-- | libjava/gnu/xml/xpath/BooleanFunction.java | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/libjava/gnu/xml/xpath/BooleanFunction.java b/libjava/gnu/xml/xpath/BooleanFunction.java deleted file mode 100644 index 018348ff2e7..00000000000 --- a/libjava/gnu/xml/xpath/BooleanFunction.java +++ /dev/null @@ -1,89 +0,0 @@ -/* BooleanFunction.java -- - Copyright (C) 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., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 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.xml.xpath; - -import java.util.List; -import org.w3c.dom.Node; - -/** - * The <code>boolean</code> function converts its argument to a boolean as - * follows: - * <ul> - * <li>a number is true if and only if it is neither positive or negative - * zero nor NaN</li> - * <li>a node-set is true if and only if it is non-empty</li> - * <li>a string is true if and only if its length is non-zero</li> - * <li>an object of a type other than the four basic types is converted to a - * boolean in a way that is dependent on that type</li> - * </ul> - * - * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> - */ -final class BooleanFunction - extends Expr -{ - - final Expr arg; - - BooleanFunction(List args) - { - this((Expr) args.get(0)); - } - - BooleanFunction(Expr arg) - { - this.arg = arg; - } - - public Object evaluate(Node context, int pos, int len) - { - Object val = arg.evaluate(context, pos, len); - return _boolean(context, val) ? Boolean.TRUE : Boolean.FALSE; - } - - public Expr clone(Object context) - { - return new BooleanFunction(arg.clone(context)); - } - - public String toString() - { - return "boolean(" + arg + ")"; - } - -} |