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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/CORBA/CDR/VMVio.java | |
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Diffstat (limited to 'libjava/classpath/gnu/CORBA/CDR/VMVio.java')
-rw-r--r-- | libjava/classpath/gnu/CORBA/CDR/VMVio.java | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/CORBA/CDR/VMVio.java b/libjava/classpath/gnu/CORBA/CDR/VMVio.java new file mode 100644 index 000000000..47a6c0c25 --- /dev/null +++ b/libjava/classpath/gnu/CORBA/CDR/VMVio.java @@ -0,0 +1,101 @@ +/* VMVio.java -- Native operations, required by value IO. + Copyright (C) 2005 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. */ + +/** + * This is a temporary replacement for the native call that would allocate + * objects without public constructors. The replacement only allocates + * objects with public parameterless constructor and objects with public + * constructor taking string (like some Throwables). + * + * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) + * + * TODO FIXME replace by native call like in VMObjectInputStream. + * Required modification of Classpath the build system. + */ + + +package gnu.CORBA.CDR; + +import java.lang.reflect.Constructor; + +public class VMVio +{ + /** + * Allocates a new Object of type clazz but without running the default + * constructor on it. It then calls the given constructor on it. The given + * constructor method comes from the constr_clazz which is a super class of + * the given clazz. + */ + public static Object allocateObject(Class clazz, Class constr_clazz, + Constructor constructor) + throws InstantiationException + { + try + { + Constructor c = clazz.getConstructor(new Class[0]); + c.setAccessible(true); + return c.newInstance(new Object[0]); + } + catch (Exception ex) + { + try + { + Constructor c = clazz.getConstructor(new Class[] { String.class }); + return c.newInstance(new Object[] { "" }); + } + catch (Exception ex2) + { + Constructor c[] = clazz.getConstructors(); + + for (int i = 0; i < c.length; i++) + { + try + { + c[i].setAccessible(true); + Class[] args = c[i].getParameterTypes(); + return c[i].newInstance(new Object[args.length]); + } + catch (Exception ex3) + { + // Try another one. + } + } + } + throw new InstantiationException(clazz.getName()); + } + } +} |