зеркало из https://github.com/mozilla/gecko-dev.git
628 строки
16 KiB
C
628 строки
16 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* ** */
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/* FIXME remove when pure JRI if possible */
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#include "oobj.h"
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#include "interpreter.h"
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#include "tree.h"
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#include "jsapi.h"
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#include "jsjava.h"
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#include "jscntxt.h" /* for cx->savedErrors */
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#include "jri.h"
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#include "prmon.h" /* for PR_XLock and PR_XUnlock */
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#include "prprf.h" /* for PR_snprintf */
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#include "prthread.h"
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#include "prlog.h"
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#ifdef JAVA
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#define IMPLEMENT_netscape_javascript_JSObject
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#include "netscape_javascript_JSObject.h"
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#ifndef XP_MAC
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#include "netscape_javascript_JSException.h"
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#else
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#include "n_javascript_JSException.h"
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#endif
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#endif
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#ifdef NSPR20
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extern PRLogModuleInfo* Moja;
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#define debug PR_LOG_DEBUG
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#endif /* NSPR20 */
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#define JAVA_JS_STACK_SIZE 8192
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typedef struct {
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JSErrorReporter errReporter;
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} JSSavedState;
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static void
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js_throwJSException(JRIEnv *env, char *detail)
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{
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#ifdef JAVA
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struct java_lang_String* message =
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JRI_NewStringPlatform(env,
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(const jbyte *) detail,
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(jint) strlen(detail),
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(const jbyte *) NULL,
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(jint) 0);
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struct netscape_javascript_JSException* exc =
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netscape_javascript_JSException_new_1(env,
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class_netscape_javascript_JSException(env),
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/*Java_getGlobalRef(env, js_JSExceptionClass),*/
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message);
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JRI_Throw(env, (struct java_lang_Throwable*)exc);
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#endif /* JAVA */
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}
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/***********************************************************************/
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static bool_t
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enterJS(JRIEnv *env,
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struct netscape_javascript_JSObject* self,
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JSContext **cxp, JSObject **jsop, JSSavedState *saved)
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{
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#ifndef JAVA
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return JS_FALSE;
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#else
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char *err;
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JSJ_EnterJS();
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/* check the internal pointer for null while holding the
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* js lock to deal with shutdown issues */
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if (jsop &&
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(! self ||
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! (*jsop = (JSObject *)
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get_netscape_javascript_JSObject_internal(env, self)))) {
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/* FIXME use a better exception */
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JRI_ThrowNew(env, JRI_FindClass(env, "java/lang/Exception"),
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"not a JavaScript object");
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JSJ_ExitJS();
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return FALSE;
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}
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/* PR_LOG(Moja, debug, ("clearing exceptions in ee=0x%x", env)); */
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exceptionClear((ExecEnv *)env);
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if (! (*cxp = JSJ_CurrentContext(env, &err))) {
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JSJ_ExitJS();
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if (err) {
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js_throwJSException(env, err);
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free(err);
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}
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return FALSE;
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}
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jsj_ClearSavedErrors(*cxp);
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saved->errReporter = JS_SetErrorReporter(*cxp, js_JavaErrorReporter);
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return TRUE;
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#endif
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}
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static bool_t
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exitJS(JRIEnv *env,
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struct netscape_javascript_JSObject* self,
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JSContext *cx, JSObject *jso, JSSavedState *saved)
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{
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#ifndef JAVA
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return JS_FALSE;
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#else
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/* restore saved info */
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JS_SetErrorReporter(cx, saved->errReporter);
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js_JSErrorToJException(cx, (ExecEnv*)env);
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JSJ_ExitJS();
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if (exceptionOccurred((ExecEnv*)env))
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return FALSE;
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return TRUE;
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#endif
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}
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/***********************************************************************/
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JRI_PUBLIC_API(struct java_lang_Object *)
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native_netscape_javascript_JSObject_getMember(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self,
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struct java_lang_String *name)
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{
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#ifndef JAVA
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return NULL;
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#else
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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const char *cstr;
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struct java_lang_Object *member;
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jsval val;
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int cost = 0;
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if (!enterJS(env, self, &cx, &jso, &saved))
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return NULL;
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if (! name ||
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! (cstr = JRI_GetStringPlatformChars(env, name,
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NULL, 0))) {
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/* XXX - temporarily replace arguments so we can compile
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(const jbyte *) cx->charSetName,
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(jint) cx->charSetNameLength))) {
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*/
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/* FIXME this should be an error of some sort */
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js_throwJSException(env, "illegal member name");
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member = NULL;
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goto do_exit;
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}
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if (! JS_GetProperty(cx, jso, cstr, &val) ||
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! js_convertJSValueToJObject(/*FIXME*/(HObject**)&member, cx, val,
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0, 0, JS_FALSE, &cost))
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member = NULL;
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do_exit:
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if (!exitJS(env, self, cx, jso, &saved))
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return NULL;
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return member;
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#endif
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}
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/***********************************************************************/
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/* public native getSlot(I)Ljava/lang/Object; */
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JRI_PUBLIC_API(struct java_lang_Object *)
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native_netscape_javascript_JSObject_getSlot(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self,
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jint slot)
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{
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#ifndef JAVA
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return NULL;
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#else
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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struct java_lang_Object *member;
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jsval val;
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int cost = 0;
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if (!enterJS(env, self, &cx, &jso, &saved))
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return NULL;
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if (! JS_GetElement(cx, jso, slot, &val) ||
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! js_convertJSValueToJObject(/*FIXME*/(HObject**)&member, cx, val,
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0, 0, JS_FALSE, &cost))
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member = NULL;
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if (!exitJS(env, self, cx, jso, &saved))
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return NULL;
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return member;
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#endif
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}
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/***********************************************************************/
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JRI_PUBLIC_API(void)
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native_netscape_javascript_JSObject_setMember(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self,
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struct java_lang_String *name,
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struct java_lang_Object *value)
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{
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#ifdef JAVA
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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const char *cstr;
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jsval val;
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if (!enterJS(env, self, &cx, &jso, &saved))
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return;
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if (! name ||
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! (cstr = JRI_GetStringPlatformChars(env, name,
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NULL, 0))) {
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/* XXX - temporarily replace arguments so we can compile
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(const jbyte *) cx->charSetName,
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(jint) cx->charSetNameLength))) {
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*/
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js_throwJSException(env, "illegal member name");
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goto do_exit;
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}
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if (js_convertJObjectToJSValue(cx, &val, (HObject *)value) &&
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JS_SetProperty(cx, jso, cstr, &val)) {
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}
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/* PR_LOG(Moja, debug,
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("JSObject.setMember(%s, 0x%x)\n", cstr, value)); */
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do_exit:
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exitJS(env, self, cx, jso, &saved);
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return;
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#endif
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}
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/***********************************************************************/
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JRI_PUBLIC_API(void)
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native_netscape_javascript_JSObject_setSlot(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self,
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jint slot,
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struct java_lang_Object *value)
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{
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#ifdef JAVA
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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jsval val;
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if (!enterJS(env, self, &cx, &jso, &saved))
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return;
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if (js_convertJObjectToJSValue(cx, &val, (HObject *)value) &&
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JS_SetElement(cx, jso, slot, &val)) {
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}
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/* PR_LOG(Moja, debug,
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("JSObject.setSlot(%d, 0x%x)\n", slot, value)); */
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exitJS(env, self, cx, jso, &saved);
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return;
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#endif
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}
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/***********************************************************************/
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JRI_PUBLIC_API(void)
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native_netscape_javascript_JSObject_removeMember(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self,
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struct java_lang_String * name)
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{
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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#ifdef JAVA /* only referenced if defined */
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const char *cstr;
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#endif
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if (!enterJS(env, self, &cx, &jso, &saved))
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return;
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#ifdef JAVA
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if (! name ||
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! (cstr = JRI_GetStringPlatformChars(env, name,
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NULL, 0))) {
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/* XXX - temporarily replace arguments so we can compile
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(const jbyte *) cx->charSetName,
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(jint) cx->charSetNameLength);
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*/
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/* FIXME this should be an error of some sort */
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js_throwJSException(env, "illegal member name");
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goto do_exit;
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}
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JS_DeleteProperty(cx, jso, cstr);
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#endif
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/* PR_LOG(Moja, debug,
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("JSObject.removeMember(%s)\n", cstr)); */
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#ifdef JAVA /* only referenced if defined */
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do_exit:
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#endif
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exitJS(env, self, cx, jso, &saved);
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return;
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}
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/***********************************************************************/
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JRI_PUBLIC_API(struct java_lang_Object *)
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native_netscape_javascript_JSObject_call(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self,
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struct java_lang_String *method,
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jobjectArray args)
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{
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#ifndef JAVA
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return NULL;
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#else
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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const char *cstr;
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struct java_lang_Object *ret;
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int total_argc, argc, i;
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jsval *argv;
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jsval rval;
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int cost = 0;
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if (!enterJS(env, self, &cx, &jso, &saved))
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return NULL;
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if (! method ||
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! (cstr = JRI_GetStringPlatformChars(env, method,
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NULL, 0))) {
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/* XXX - temporarily replace arguments so we can compile
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(const jbyte *) cx->charSetName,
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(jint) cx->charSetNameLength))) {
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*/
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/* FIXME this should be an error of some sort */
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js_throwJSException(env, "illegal member name");
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ret = NULL;
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goto do_exit;
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}
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if (args) {
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total_argc = JRI_GetObjectArrayLength(env, args);
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argv = sysMalloc(total_argc * sizeof(jsval));
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} else {
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total_argc = 0;
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argv = 0;
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}
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for (argc = 0; argc < total_argc; argc++) {
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jref arg = JRI_GetObjectArrayElement(env, args, argc);
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if (!js_convertJObjectToJSValue(cx, argv+argc, (HObject*)arg))
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goto cleanup_argv;
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JS_AddRoot(cx, argv+argc);
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}
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if (! JS_CallFunctionName(cx, jso, cstr, argc, argv, &rval) ||
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! js_convertJSValueToJObject((HObject **) &ret, cx, rval,
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0, 0, JS_FALSE, &cost)) {
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ret = NULL;
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}
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cleanup_argv:
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for (i = 0; i < argc; i++)
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JS_RemoveRoot(cx, argv+i);
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sysFree(argv);
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do_exit:
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if (!exitJS(env, self, cx, jso, &saved))
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return NULL;
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return ret;
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#endif
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}
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/***********************************************************************/
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JRI_PUBLIC_API(struct java_lang_Object *)
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native_netscape_javascript_JSObject_eval(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self,
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struct java_lang_String *s)
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{
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#ifndef JAVA
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return NULL;
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#else
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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const char *cstr;
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int cstrlen;
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struct java_lang_Object *ret;
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jsval rval;
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int cost = 0;
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JSPrincipals *principals;
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char *codebase;
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if (!enterJS(env, self, &cx, &jso, &saved))
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return NULL;
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if (! s ||
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! (cstr = JRI_GetStringPlatformChars(env, s,
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NULL, 0))) {
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/* XXX - temporarily replace arguments so we can compile
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(const jbyte *) cx->charSetName,
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(jint) cx->charSetNameLength))) {
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*/
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/* FIXME this should be an error of some sort */
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js_throwJSException(env, "illegal eval string");
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ret = NULL;
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goto do_exit;
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}
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/* subtract 1 for the NUL */
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/*
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* FIXME There is no JRI_GetStringPlatformLength (what a misnomer, if there
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* were!), but JRI_GetStringPlatformChars does NUL-terminate the encoded
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* string, so we trust that no charset encoding ever uses a NUL byte as
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* part of a multibyte sequence and just call strlen.
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*/
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cstrlen = strlen(cstr);
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principals = js_GetJSPrincipalsFromJavaCaller(cx, 0);
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codebase = principals ? principals->codebase : NULL;
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if (! JS_EvaluateScriptForPrincipals(cx, jso, principals, cstr, cstrlen,
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codebase, 0, &rval) ||
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! js_convertJSValueToJObject((HObject**)&ret, cx, rval,
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0, 0, JS_FALSE, &cost)) {
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ret = NULL;
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}
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do_exit:
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if (!exitJS(env, self, cx, jso, &saved))
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return NULL;
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return ret;
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#endif
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}
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/***********************************************************************/
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JRI_PUBLIC_API(void)
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native_netscape_javascript_JSObject_finalize(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self)
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{
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#ifdef JAVA
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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/* FIXME if enterJS fails here we have a memory leak! */
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if (!enterJS(env, self, &cx, &jso, &saved))
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return;
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js_RemoveReflection(cx, jso);
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if (!exitJS(env, self, cx, jso, &saved))
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return;
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return;
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#endif
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}
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/***********************************************************************/
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JRI_PUBLIC_API(struct java_lang_String *)
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native_netscape_javascript_JSObject_toString(
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JRIEnv* env,
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struct netscape_javascript_JSObject* self)
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{
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JSContext *cx;
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JSObject *jso;
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JSSavedState saved;
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#ifdef JAVA /* only referenced if defined */
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JSString *jsstr;
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char *cstr;
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#endif
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struct java_lang_String *ret = NULL;
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if (!enterJS(env, self, &cx, &jso, &saved))
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return NULL;
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#ifdef JAVA
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if ((jsstr = JS_ValueToString(cx, OBJECT_TO_JSVAL(jso))) &&
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(cstr = JS_GetStringBytes(jsstr))) {
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ret = JRI_NewStringPlatform(env,
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(const jbyte *) cstr,
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(jint) JS_GetStringLength(jsstr),
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NULL, 0);
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/* XXX - temporarily replace arguments so we can compile
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(const jbyte *) cx->charSetName,
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(jint) cx->charSetNameLength);
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*/
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} else {
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/* FIXME could grab the clazz name from the JSObject */
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ret = JRI_NewStringPlatform(env,
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(const jbyte *) "*JSObject*",
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(jint) strlen("*JSObject*"),
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NULL, 0);
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/* XXX - temporarily replace arguments so we can compile
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(const jbyte *) cx->charSetName,
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(jint) cx->charSetNameLength);
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*/
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}
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#endif
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if (!exitJS(env, self, cx, jso, &saved))
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return NULL;
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return ret;
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}
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/***********************************************************************/
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JRI_PUBLIC_API(struct netscape_javascript_JSObject*)
|
|
native_netscape_javascript_JSObject_getWindow(
|
|
JRIEnv* env,
|
|
struct java_lang_Class* clazz,
|
|
struct java_applet_Applet* hint)
|
|
{
|
|
#ifndef JAVA
|
|
return NULL;
|
|
#else
|
|
struct netscape_javascript_JSObject *ret = NULL;
|
|
JSContext *cx;
|
|
JSSavedState saved;
|
|
JSObject *jso;
|
|
|
|
if (!JSJ_IsEnabled()) {
|
|
js_throwJSException(env, "Java/JavaScript communication is disabled");
|
|
return 0;
|
|
}
|
|
|
|
if (!enterJS(env, NULL, &cx, NULL, &saved))
|
|
return NULL;
|
|
|
|
jso = JSJ_GetDefaultObject(env, (jobject) hint);
|
|
if (exceptionOccurred((ExecEnv *)env))
|
|
goto out;
|
|
|
|
ret = (struct netscape_javascript_JSObject *)
|
|
js_ReflectJSObjectToJObject(cx, jso);
|
|
|
|
out:
|
|
if (!exitJS(env, NULL, cx, NULL, &saved))
|
|
return NULL;
|
|
return ret;
|
|
#endif
|
|
}
|
|
|
|
/***********************************************************************/
|
|
|
|
JRI_PUBLIC_API(void)
|
|
native_netscape_javascript_JSObject_initClass(
|
|
JRIEnv* env,
|
|
struct java_lang_Class* myClazz)
|
|
{
|
|
#ifdef JAVA
|
|
struct java_lang_Class* clazz;
|
|
/* this is to initialize the field lookup indices, and protect
|
|
* the classes from gc. */
|
|
|
|
clazz = use_netscape_javascript_JSObject(env);
|
|
MakeClassSticky((struct Hjava_lang_Class*)clazz);
|
|
|
|
clazz = use_netscape_javascript_JSException(env);
|
|
MakeClassSticky((struct Hjava_lang_Class*)clazz);
|
|
|
|
/* this does nothing if somebody else has already set
|
|
* stuff up (i.e. client or server) */
|
|
JSJ_InitStandalone();
|
|
#endif
|
|
}
|
|
|