/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape 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/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr * 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 Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the * terms of the GNU Public License (the "GPL"), in which case the * provisions of the GPL are applicable instead of those above. * If you wish to allow use of your version of this file only * under the terms of the GPL and not to allow others to use your * version of this file under the NPL, indicate your decision by * deleting the provisions above and replace them with the notice * and other provisions required by the GPL. If you do not delete * the provisions above, a recipient may use your version of this * file under either the NPL or the GPL. */ /* * 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; }