/* src/tests/native/checkjni.c - for testing JNI stuff

   Copyright (C) 1996-2005, 2006, 2008
   CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO

   This file is part of CACAO.

   This program 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.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

*/


#include "config.h"

#include <stdio.h>
#include <string.h>

#include INCLUDE_JNI_MD_H
#include INCLUDE_JNI_H


JNIEXPORT jboolean JNICALL Java_checkjni_IsAssignableFrom(JNIEnv *env, jclass clazz, jclass sub, jclass sup)
{
  return (*env)->IsAssignableFrom(env, sub, sup);
}

JNIEXPORT jboolean JNICALL Java_checkjni_IsInstanceOf(JNIEnv *env, jclass clazz, jobject obj, jclass c)
{
  return (*env)->IsInstanceOf(env, obj, c);
}

JNIEXPORT jboolean JNICALL Java_checkjni_IsSameObject(JNIEnv *env, jclass clazz, jobject obj1, jobject obj2)
{
  return (*env)->IsSameObject(env, obj1, obj2);
}

JNIEXPORT jint     JNICALL Java_checkjni_PushLocalFrame(JNIEnv *env, jclass clazz, jint capacity)
{
  return (*env)->PushLocalFrame(env, capacity);
}

JNIEXPORT void     JNICALL Java_checkjni_Throw(JNIEnv *env, jclass clazz)
{
	jclass c = (*env)->FindClass(env, "java/lang/Exception");
	(*env)->ThrowNew(env, c, "Exception from JNI");
}

JNIEXPORT jclass   JNICALL Java_checkjni_GetObjectClass(JNIEnv *env, jclass clazz, jobject obj)
{
	return (*env)->GetObjectClass(env, obj);
}

#define CHECKJNI_GET_FIELD(type, name, fieldname, sig) \
JNIEXPORT type     JNICALL Java_checkjni_Get##name##Field(JNIEnv *env, jclass clazz, jobject obj) \
{ \
	jclass c = (*env)->GetObjectClass(env, obj); \
	jfieldID id = (*env)->GetFieldID(env, c, fieldname, sig); \
	if ((*env)->ExceptionCheck(env)) return 0; \
	return (*env)->Get##name##Field(env, obj, id); \
}
CHECKJNI_GET_FIELD(jint,    Int,    "jfI", "I")
CHECKJNI_GET_FIELD(jobject, Object, "jfL", "Ljava/lang/Object;")

#define CHECKJNI_GET_STATIC_FIELD(type, name, fieldname, sig) \
JNIEXPORT type     JNICALL Java_checkjni_GetStatic##name##Field(JNIEnv *env, jclass clazz) \
{ \
	jfieldID id = (*env)->GetStaticFieldID(env, clazz, fieldname, sig); \
	if ((*env)->ExceptionCheck(env)) return 0; \
	return (*env)->GetStatic##name##Field(env, clazz, id); \
}
CHECKJNI_GET_STATIC_FIELD(jint,    Int,    "jsfI", "I")
CHECKJNI_GET_STATIC_FIELD(jobject, Object, "jsfL", "Ljava/lang/Object;")

#define CHECKJNI_SET_STATIC_FIELD(type, name, fieldname, sig) \
JNIEXPORT type     JNICALL Java_checkjni_SetStatic##name##Field(JNIEnv *env, jclass clazz, type val) \
{ \
	jfieldID id = (*env)->GetStaticFieldID(env, clazz, fieldname, sig); \
	if ((*env)->ExceptionCheck(env)) return 0; \
	(*env)->SetStatic##name##Field(env, clazz, id, val); \
}
CHECKJNI_SET_STATIC_FIELD(jint,    Int,    "jsfI", "I")
CHECKJNI_SET_STATIC_FIELD(jobject, Object, "jsfL", "Ljava/lang/Object;")

#define CHECKJNI_NEW_ARRAY(type, name) \
JNIEXPORT type##Array JNICALL Java_checkjni_New##name##Array(JNIEnv *env, jclass clazz, jint size) \
{ \
	int i; \
	type##Array a; \
	type *p; \
	jboolean iscopy; \
	a = (*env)->New##name##Array(env, size); \
	p = (*env)->Get##name##ArrayElements(env, a, &iscopy); \
	for (i = 0; i < size; i++) p[i] = i; \
	(*env)->Release##name##ArrayElements(env, a, p, 0); \
	return a; \
}
CHECKJNI_NEW_ARRAY(jint,    Int)
CHECKJNI_NEW_ARRAY(jlong,   Long)

JNIEXPORT jstring  JNICALL Java_checkjni_NewString(JNIEnv *env, jclass clazz, jint type)
{
	if (type == 1)
		return (*env)->NewString(env, (jchar *) "Test String from JNI", (jsize) strlen("Test String from JNI"));
	else
		return (*env)->NewStringUTF(env, "Test String from JNI with UTF");
}