src/macosx/native/jobjc/src/core/native/NSClass.m

/*
 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#include "com_apple_jobjc_NSClass.h"
#include <objc/runtime.h>

#include <JavaNativeFoundation/JavaNativeFoundation.h>

/*
 * Class:     com_apple_jobjc_NSClass
 * Method:    getNativeClassByName
 * Signature: (JLjava/lang/String;)J
 */
JNIEXPORT jlong JNICALL Java_com_apple_jobjc_NSClass_getNativeClassByName
(JNIEnv *env, jclass clazz, jstring className)
{
    if (className == NULL) return ptr_to_jlong(NULL);
    const char *classNameCStr = (*env)->GetStringUTFChars(env, className, JNI_FALSE);
    const id obj = objc_getClass(classNameCStr);
    (*env)->ReleaseStringUTFChars(env, className, classNameCStr);

    if (obj == nil) return ptr_to_jlong(NULL);
    return ptr_to_jlong(obj);
}

/*
 * Class:     com_apple_jobjc_NSClass
 * Method:    getSuperClass
 * Signature: (J)J
 */
JNIEXPORT jlong JNICALL Java_com_apple_jobjc_NSClass_getSuperClassOfClass
(JNIEnv *env, jclass clazz, jlong clazzPtr)
{
    if (clazzPtr == 0L) return ptr_to_jlong(NULL);
    const Class objClazz = (Class)jlong_to_ptr(clazzPtr);
    return ptr_to_jlong(class_getSuperclass(objClazz));
}

/*
 * Class:     com_apple_jobjc_NSClass
 * Method:    getClassName
 * Signature: (J)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_apple_jobjc_NSClass_getClassNameOfClass
(JNIEnv *env, jclass clazz, jlong clazzPtr)
{
    const char *clazzName = (char *)class_getName((Class)jlong_to_ptr(clazzPtr));
    return (*env)->NewStringUTF(env, clazzName);
}

JNIEXPORT jlong JNICALL Java_com_apple_jobjc_NSClass_getClass
(JNIEnv *env, jclass clazz, jlong objPtr)
{
    id obj = (id)jlong_to_ptr(objPtr);
    return ptr_to_jlong(object_getClass(obj));
}