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-/* 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;
- }
-}
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