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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* This file is part of the Java-vendor-neutral implementation of LiveConnect
*
* It contains the code for reading and writing elements of a Java array.
*/
#include "jsj_private.h" /* LiveConnect internals */
/*
* Read the Java value at a given index into a Java array and convert it
* to a JS value. The array_component_signature describes the type of
* the resulting Java value, which can be a primitive type or an object type.
* More specifically it can be an array type in the case of multidimensional
* arrays.
*/
JSBool
jsj_GetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array, jsize index,
JavaSignature *array_component_signature,
jsval *vp)
{
jvalue java_value;
JavaSignatureChar component_type;
JSBool success;
#define GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Type,member) \
(*jEnv)->Get##Type##ArrayRegion(jEnv, java_array, index, 1, \
&java_value.member); \
if ((*jEnv)->ExceptionOccurred(jEnv)) { \
jsj_ReportJavaError(cx, jEnv, "Error reading element of " \
"Java primitive array"); \
return JS_FALSE; \
}
component_type = array_component_signature->type;
switch(component_type) {
case JAVA_SIGNATURE_BYTE:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Byte,b);
break;
case JAVA_SIGNATURE_CHAR:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Char,c);
break;
case JAVA_SIGNATURE_SHORT:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Short,s);
break;
case JAVA_SIGNATURE_INT:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Int,i);
break;
case JAVA_SIGNATURE_BOOLEAN:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Boolean,z);
break;
case JAVA_SIGNATURE_LONG:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Long,j);
break;
case JAVA_SIGNATURE_FLOAT:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Float,f);
break;
case JAVA_SIGNATURE_DOUBLE:
GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Double,d);
break;
/* Non-primitive (reference) type */
default:
JS_ASSERT(component_type >= JAVA_SIGNATURE_ARRAY);
java_value.l = (*jEnv)->GetObjectArrayElement(jEnv, java_array, index);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_ReportJavaError(cx, jEnv, "Error reading Java object array");
return JS_FALSE;
}
success = jsj_ConvertJavaObjectToJSValue(cx, jEnv, java_value.l, vp);
(*jEnv)->DeleteLocalRef(jEnv, java_value.l);
return success;
#undef GET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY
case JAVA_SIGNATURE_UNKNOWN:
case JAVA_SIGNATURE_VOID:
JS_ASSERT(0); /* Unknown java type signature */
return JS_FALSE;
}
return jsj_ConvertJavaValueToJSValue(cx, jEnv, array_component_signature, &java_value, vp);
}
JSBool
jsj_SetJavaArrayElement(JSContext *cx, JNIEnv *jEnv, jarray java_array, jsize index,
JavaSignature *array_component_signature,
jsval js_val)
{
int dummy_cost;
jvalue java_value;
JavaSignatureChar component_type;
JSBool is_local_ref;
if (!jsj_ConvertJSValueToJavaValue(cx, jEnv, js_val, array_component_signature,
&dummy_cost, &java_value, &is_local_ref))
return JS_FALSE;
#define SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Type,member) \
(*jEnv)->Set##Type##ArrayRegion(jEnv, java_array, index, 1, \
&java_value.member); \
if ((*jEnv)->ExceptionOccurred(jEnv)) { \
jsj_ReportJavaError(cx, jEnv, "Error assigning to element of " \
"Java primitive array"); \
return JS_FALSE; \
}
component_type = array_component_signature->type;
switch(component_type) {
case JAVA_SIGNATURE_BYTE:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Byte,b);
break;
case JAVA_SIGNATURE_CHAR:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Char,c);
break;
case JAVA_SIGNATURE_SHORT:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Short,s);
break;
case JAVA_SIGNATURE_INT:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Int,i);
break;
case JAVA_SIGNATURE_BOOLEAN:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Boolean,z);
break;
case JAVA_SIGNATURE_LONG:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Long,j);
break;
case JAVA_SIGNATURE_FLOAT:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Float,f);
break;
case JAVA_SIGNATURE_DOUBLE:
SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY(Double,d);
break;
/* Non-primitive (reference) type */
default:
JS_ASSERT(IS_REFERENCE_TYPE(component_type));
(*jEnv)->SetObjectArrayElement(jEnv, java_array, index, java_value.l);
if (is_local_ref) \
(*jEnv)->DeleteLocalRef(jEnv, java_value.l);
if ((*jEnv)->ExceptionOccurred(jEnv)) {
jsj_ReportJavaError(cx, jEnv, "Error assigning to Java object array");
return JS_FALSE;
}
break;
#undef SET_ELEMENT_FROM_PRIMITIVE_JAVA_ARRAY
case JAVA_SIGNATURE_UNKNOWN:
case JAVA_SIGNATURE_VOID:
JS_ASSERT(0); /* Unknown java type signature */
return JS_FALSE;
}
return JS_TRUE;
}
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