old-autovect-branch/libjava/classpath/vm/reference/java/io/VMObjectStreamClass.java

   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