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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/beans/decoder/IndexContext.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/beans/decoder/IndexContext.java')
-rw-r--r-- | libjava/classpath/gnu/java/beans/decoder/IndexContext.java | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/beans/decoder/IndexContext.java b/libjava/classpath/gnu/java/beans/decoder/IndexContext.java new file mode 100644 index 000000000..b5af9019f --- /dev/null +++ b/libjava/classpath/gnu/java/beans/decoder/IndexContext.java @@ -0,0 +1,130 @@ +/* gnu.java.beans.decoder.IndexContext + 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.java.beans.decoder; + +/** IndexContext is Context implementation that senses whether it is an indexed get or set + * operation and invokes this operation. + * + * <p>An IndexContent is a get operation when no argument is provided and a set operation if one + * argument is provided.</p> + * + * @author Robert Schuster + */ +class IndexContext extends AbstractContext +{ + private Object result; + private Object argument; + private int index; + private boolean isSetter; + + IndexContext(String id, int newIndex) + { + setId(id); + index = newIndex; + } + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#addObject(java.lang.Object) + */ + public void addParameterObject(Object o) throws AssemblyException + { + if (! isSetter) + { + argument = o; + isSetter = true; + } + else + throw new AssemblyException(new IllegalStateException("More than one argument for indiced access is not possible.")); + } + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#reportStatement() + */ + public void notifyStatement(Context outerContext) throws AssemblyException + { + throw new AssemblyException(new IllegalStateException("Statements inside indiced access are not allowed.")); + } + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#endContext(gnu.java.beans.decoder.Context) + */ + public Object endContext(Context outerContext) throws AssemblyException + { + if (isSetter) + { + // setter + outerContext.set(index, argument); + + return null; + } + else + // getter + return result = outerContext.get(index); + } + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#subContextFailed() + */ + public boolean subContextFailed() + { + // returns true to indicate that indiced access assembly fails when one of its + // argument could not be assembled + return true; + } + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#set(int, java.lang.Object) + */ + public void set(int index, Object o) throws AssemblyException + { + throw new AssemblyException(new IllegalStateException("Setter is not allowed inside indiced access.")); + } + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#get(int) + */ + public Object get(int index) throws AssemblyException + { + throw new AssemblyException(new IllegalStateException("getter is not allowed insided indiced access.")); + } + + public Object getResult() + { + return result; + } +} |