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    1   /* VMObjectStreamClass.java -- VM helper functions for ObjectStreamClass
    2      Copyright (C) 2003, 2005  Free Software Foundation, Inc.
    3   
    4   This file is part of GNU Classpath.
    5   
    6   GNU Classpath is free software; you can redistribute it and/or modify
    7   it under the terms of the GNU General Public License as published by
    8   the Free Software Foundation; either version 2, or (at your option)
    9   any later version.
   10    
   11   GNU Classpath is distributed in the hope that it will be useful, but
   12   WITHOUT ANY WARRANTY; without even the implied warranty of
   13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14   General Public License for more details.
   15   
   16   You should have received a copy of the GNU General Public License
   17   along with GNU Classpath; see the file COPYING.  If not, write to the
   18   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   19   02110-1301 USA.
   20   
   21   Linking this library statically or dynamically with other modules is
   22   making a combined work based on this library.  Thus, the terms and
   23   conditions of the GNU General Public License cover the whole
   24   combination.
   25   
   26   As a special exception, the copyright holders of this library give you
   27   permission to link this library with independent modules to produce an
   28   executable, regardless of the license terms of these independent
   29   modules, and to copy and distribute the resulting executable under
   30   terms of your choice, provided that you also meet, for each linked
   31   independent module, the terms and conditions of the license of that
   32   module.  An independent module is a module which is not derived from
   33   or based on this library.  If you modify this library, you may extend
   34   this exception to your version of the library, but you are not
   35   obligated to do so.  If you do not wish to do so, delete this
   36   exception statement from your version. */
   37   
   38   
   39   package java.io;
   40   
   41   import gnu.classpath.Configuration;
   42   import java.lang.reflect.Field;
   43   
   44   final class VMObjectStreamClass
   45   {
   46     static
   47     {
   48       if (Configuration.INIT_LOAD_LIBRARY)
   49         {
   50   	System.loadLibrary("javaio");
   51         }
   52     }
   53   
   54     /**
   55       * Returns true if CLAZZ has a static class initializer
   56       * (a.k.a. <clinit>).
   57       */
   58     static native boolean hasClassInitializer (Class clazz);
   59   
   60     /**
   61      * Sets the value of the specified field. This method handles "double".
   62      * Warning ! The types are not truely checked here and final values may be
   63      * assigned.
   64      *
   65      * @param field Field to set the value.
   66      * @param obj Instance which will have its field set.
   67      * @param val Value to put in the field.
   68      */
   69     static native void setDoubleNative(Field field, Object obj, double val)
   70       throws InternalError;
   71   
   72     /**
   73      * Sets the value of the specified field. This method handles "float".
   74      * Warning ! The types are not truely checked here and final values may be
   75      * assigned.
   76      *
   77      * @param field Field to set the value.
   78      * @param obj Instance which will have its field set.
   79      * @param val Value to put in the field.
   80      */
   81     static native void setFloatNative(Field field, Object obj, float val)
   82       throws InternalError;
   83   
   84     /**
   85      * Sets the value of the specified field. This method handles "long".
   86      * Warning ! The types are not truely checked here and final values may be
   87      * assigned.
   88      *
   89      * @param field Field to set the value.
   90      * @param obj Instance which will have its field set.
   91      * @param val Value to put in the field.
   92      */
   93     static native void setLongNative(Field field, Object obj, long val)
   94       throws InternalError;
   95     
   96     /**
   97      * Sets the value of the specified field. This method handles "int".
   98      * Warning ! The types are not truely checked here and final values may be
   99      * assigned.
  100      *
  101      * @param field Field to set the value.
  102      * @param obj Instance which will have its field set.
  103      * @param val Value to put in the field.
  104      */
  105     static native void setIntNative(Field field, Object obj, int val) 
  106       throws InternalError;
  107     
  108     /**
  109      * Sets the value of the specified field. This method handles "short".
  110      * Warning ! The types are not truely checked here and final values may be
  111      * assigned.
  112      *
  113      * @param field Field to set the value.
  114      * @param obj Instance which will have its field set.
  115      * @param val Value to put in the field.
  116      */
  117     static native void setShortNative(Field field, Object obj, short val) 
  118       throws InternalError;
  119   
  120     /**
  121      * Sets the value of the specified field. This method handles "char".
  122      * Warning ! The types are not truely checked here and final values may be
  123      * assigned.
  124      *
  125      * @param field Field to set the value.
  126      * @param obj Instance which will have its field set.
  127      * @param val Value to put in the field.
  128      */
  129     static native void setCharNative(Field field, Object obj, char val) 
  130       throws InternalError;
  131   
  132     /**
  133      * Sets the value of the specified field. This method handles "byte".
  134      * Warning ! The types are not truely checked here and final values may be
  135      * assigned.
  136      *
  137      * @param field Field to set the value.
  138      * @param obj Instance which will have its field set.
  139      * @param val Value to put in the field.
  140      */
  141     static native void setByteNative(Field field, Object obj, byte val) 
  142       throws InternalError;
  143   
  144     /**
  145      * Sets the value of the specified field. This method handles "boolean".
  146      * Warning ! The types are not truely checked here and final values may be
  147      * assigned.
  148      *
  149      * @param field Field to set the value.
  150      * @param obj Instance which will have its field set.
  151      * @param val Value to put in the field.
  152      */
  153     static native void setBooleanNative(Field field, Object obj, boolean val) 
  154       throws InternalError;
  155   
  156     /**
  157      * Sets the value of the specified field. This method handles "object".
  158      * Warning ! The types are not truely checked here and final values may be
  159      * assigned.
  160      *
  161      * @param field Field to set the value.
  162      * @param obj Instance which will have its field set.
  163      * @param val Value to put in the field.
  164      */
  165     static native void setObjectNative(Field field, Object obj, Object val) 
  166       throws InternalError;
  167     
  168   }
  169   

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