| /* gnu.java.beans.decoder.GrowableArrayContext |
| 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; |
| |
| import java.lang.reflect.Array; |
| |
| /** A Context implementation for a growable array. The array |
| * elements have to be set using expressions. |
| * |
| * @author Robert Schuster |
| */ |
| class GrowableArrayContext extends AbstractContext |
| { |
| private static final int INITIAL_SIZE = 16; |
| |
| private Class klass; |
| private Object array; |
| private int length; |
| |
| GrowableArrayContext(String id, Class newClass) |
| { |
| setId(id); |
| klass = newClass; |
| array = Array.newInstance(klass, INITIAL_SIZE); |
| } |
| |
| /* (non-Javadoc) |
| * @see gnu.java.beans.decoder.Context#addObject(java.lang.Object) |
| */ |
| public void addParameterObject(Object o) throws AssemblyException |
| { |
| if (length == Array.getLength(array)) |
| { |
| Object tmp = Array.newInstance(klass, length * 2); |
| System.arraycopy(array, 0, tmp, 0, length); |
| array = tmp; |
| } |
| |
| try { |
| Array.set(array, length++, o); |
| } catch(IllegalArgumentException iae) { |
| throw new AssemblyException(iae); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see gnu.java.beans.decoder.Context#reportStatement() |
| */ |
| public void notifyStatement(Context outerContext) throws AssemblyException |
| { |
| throw new AssemblyException( |
| new IllegalArgumentException("Statements inside a growable array 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 (length != Array.getLength(array)) |
| { |
| Object tmp = Array.newInstance(klass, length); |
| System.arraycopy(array, 0, tmp, 0, length); |
| array = tmp; |
| } |
| |
| return array; |
| } |
| |
| /* (non-Javadoc) |
| * @see gnu.java.beans.decoder.Context#subContextFailed() |
| */ |
| public boolean subContextFailed() |
| { |
| // returns false to indicate that assembling the array does not fail only because |
| // a subelement failed |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see gnu.java.beans.decoder.Context#set(int, java.lang.Object) |
| */ |
| public void set(int index, Object o) throws AssemblyException |
| { |
| try { |
| Array.set(array, index, o); |
| } catch(IllegalArgumentException iae) { |
| throw new AssemblyException(iae); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see gnu.java.beans.decoder.Context#get(int) |
| */ |
| public Object get(int index) throws AssemblyException |
| { |
| return Array.get(array, index); |
| } |
| |
| public Object getResult() |
| { |
| return array; |
| } |
| } |