Exemplo n.º 1
0
jmethodID methodIdFromClass(const char *className, const char *methName, 
                            const char *methSignature, MethType methType, 
                            JNIEnv *env)
{
    jclass cls = globalClassReference(className, env);
    if (cls == NULL) {
      fprintf(stderr, "could not find class %s\n", className);
      return NULL;
    }

    jmethodID mid = 0;
    if (!validateMethodType(methType)) {
      fprintf(stderr, "invalid method type\n");
      return NULL;
    }

    if (methType == STATIC) {
        mid = (*env)->GetStaticMethodID(env, cls, methName, methSignature);
    }
    else if (methType == INSTANCE) {
        mid = (*env)->GetMethodID(env, cls, methName, methSignature);
    }
    if (mid == NULL) {
      fprintf(stderr, "could not find method %s from class %s with signature %s\n",methName, className, methSignature);
    }
    return mid;
}
Exemplo n.º 2
0
jobject constructNewObjectOfClass(JNIEnv *env, Exc *exc, const char *className, 
                                  const char *ctorSignature, ...)
{
    va_list args;
    jclass cls;
    jmethodID mid; 
    jobject jobj;
    jthrowable jthr;

    cls = globalClassReference(className, env);
    if (cls == NULL) {
        (*env)->ExceptionDescribe(env);
      return NULL;
    }

    mid = methodIdFromClass(className, "<init>", ctorSignature, 
                            INSTANCE, env);
    if (mid == NULL) {
        (*env)->ExceptionDescribe(env);
        return NULL;
    } 
    va_start(args, ctorSignature);
    jobj = (*env)->NewObjectV(env, cls, mid, args);
    va_end(args);
    jthr = (*env)->ExceptionOccurred(env);
    if (jthr != NULL) {
        if (exc != NULL)
            *exc = jthr;
        else
            (*env)->ExceptionDescribe(env);
    }
    return jobj;
}
Exemplo n.º 3
0
int invokeMethod2(JNIEnv *env, jobjectArray *retval, Exc *exc, MethType methType,
                 jobject instObj, const char *className,
                 const char *methName, const char *methSignature, ...)
{
    va_list args;
    jclass cls;
    jmethodID mid;
    jthrowable jthr;
    const char *str; 
    char returnType;
    
    if (! validateMethodType(methType)) {
      return -1;
    }
    cls = globalClassReference(className, env);
    if (cls == NULL) {
      return -2;
    }

    mid = methodIdFromClass(className, methName, methSignature, 
                            methType, env);
    if (mid == NULL) {
        (*env)->ExceptionDescribe(env);
        return -3;
    }
   
    str = methSignature;
    while (*str != ')') str++;
    str++;
    returnType = *str;
    va_start(args, methSignature);
    if (returnType == JARRAYOBJECT) {
        jobjectArray jobj = NULL;
        if (methType == STATIC) {
            jobj = (*env)->CallStaticObjectMethodV(env, cls, mid, args);
        }
        else if (methType == INSTANCE) {
            jobj = (*env)->CallObjectMethodV(env, instObj, mid, args);
        }
        *retval = jobj;
    }
    else {
        *retval = NULL;
        return -1;
    }
    va_end(args);

    jthr = (*env)->ExceptionOccurred(env);
    if (jthr != NULL) {
        if (exc != NULL)
            *exc = jthr;
        else
            (*env)->ExceptionDescribe(env);
        return -1;
    }
    return 0;
}
Exemplo n.º 4
0
int invokeMethod(JNIEnv *env, RetVal *retval, Exc *exc, MethType methType,
                 jobject instObj, const char *className,
                 const char *methName, const char *methSignature, ...)
{
    va_list args;
    jclass cls;
    jmethodID mid;
    jthrowable jthr;
    const char *str; 
    char returnType;
    
    if (! validateMethodType(methType)) {
      return -1;
    }
    cls = globalClassReference(className, env);
    if (cls == NULL) {
      return -2;
    }

    mid = methodIdFromClass(className, methName, methSignature, 
                            methType, env);
    if (mid == NULL) {
        (*env)->ExceptionDescribe(env);
        return -3;
    }
   
    str = methSignature;
    while (*str != ')') str++;
    str++;
    returnType = *str;
    va_start(args, methSignature);
    if (returnType == JOBJECT || returnType == JARRAYOBJECT) {
        jobject jobj = NULL;
        if (methType == STATIC) {
            jobj = (*env)->CallStaticObjectMethodV(env, cls, mid, args);
        }
        else if (methType == INSTANCE) {
            jobj = (*env)->CallObjectMethodV(env, instObj, mid, args);
        }
        retval->l = jobj;
    }
    else if (returnType == VOID) {
        if (methType == STATIC) {
            (*env)->CallStaticVoidMethodV(env, cls, mid, args);
        }
        else if (methType == INSTANCE) {
            (*env)->CallVoidMethodV(env, instObj, mid, args);
        }
    }
    else if (returnType == JBOOLEAN) {
        jboolean jbool = 0;
        if (methType == STATIC) {
            jbool = (*env)->CallStaticBooleanMethodV(env, cls, mid, args);
        }
        else if (methType == INSTANCE) {
            jbool = (*env)->CallBooleanMethodV(env, instObj, mid, args);
        }
        retval->z = jbool;
    }
    else if (returnType == JSHORT) {
        jshort js = 0;
        if (methType == STATIC) {
            js = (*env)->CallStaticShortMethodV(env, cls, mid, args);
        }
        else if (methType == INSTANCE) {
            js = (*env)->CallShortMethodV(env, instObj, mid, args);
        }
        retval->s = js;
    }
    else if (returnType == JLONG) {
        jlong jl = -1;
        if (methType == STATIC) {
            jl = (*env)->CallStaticLongMethodV(env, cls, mid, args);
        }
        else if (methType == INSTANCE) {
            jl = (*env)->CallLongMethodV(env, instObj, mid, args);
        }
        retval->j = jl;
    }
    else if (returnType == JINT) {
        jint ji = -1;
        if (methType == STATIC) {
            ji = (*env)->CallStaticIntMethodV(env, cls, mid, args);
        }
        else if (methType == INSTANCE) {
            ji = (*env)->CallIntMethodV(env, instObj, mid, args);
        }
        retval->i = ji;
    }
    va_end(args);

    jthr = (*env)->ExceptionOccurred(env);
    if (jthr != NULL) {
        if (exc != NULL)
            *exc = jthr;
        else
            (*env)->ExceptionDescribe(env);
        return -1;
    }
    return 0;
}