Beispiel #1
0
/**
 * Define OS-specific constants.
 *
 * This function creates or uses JS object |OS.Constants| to store
 * all its constants.
 */
bool DefineOSFileConstants(JSContext *cx, JS::Handle<JSObject*> global)
{
  MOZ_ASSERT(gInitialized);

  if (gPaths == nullptr) {
    // If an initialization error was ignored, we may end up with
    // |gInitialized == true| but |gPaths == nullptr|. We cannot
    // |MOZ_ASSERT| this, as this would kill precompile_cache.js,
    // so we simply return an error.
    JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr,
      JSMSG_CANT_OPEN, "OSFileConstants", "initialization has failed");
    return false;
  }

  JS::Rooted<JSObject*> objOS(cx);
  if (!(objOS = GetOrCreateObjectProperty(cx, global, "OS"))) {
    return false;
  }
  JS::Rooted<JSObject*> objConstants(cx);
  if (!(objConstants = GetOrCreateObjectProperty(cx, objOS, "Constants"))) {
    return false;
  }

  // Build OS.Constants.libc

  JS::Rooted<JSObject*> objLibc(cx);
  if (!(objLibc = GetOrCreateObjectProperty(cx, objConstants, "libc"))) {
    return false;
  }
  if (!dom::DefineConstants(cx, objLibc, gLibcProperties)) {
    return false;
  }

#if defined(XP_WIN)
  // Build OS.Constants.Win

  JS::Rooted<JSObject*> objWin(cx);
  if (!(objWin = GetOrCreateObjectProperty(cx, objConstants, "Win"))) {
    return false;
  }
  if (!dom::DefineConstants(cx, objWin, gWinProperties)) {
    return false;
  }
#endif // defined(XP_WIN)

  // Build OS.Constants.Sys

  JS::Rooted<JSObject*> objSys(cx);
  if (!(objSys = GetOrCreateObjectProperty(cx, objConstants, "Sys"))) {
    return false;
  }

  nsCOMPtr<nsIXULRuntime> runtime = do_GetService(XULRUNTIME_SERVICE_CONTRACTID);
  if (runtime) {
    nsAutoCString os;
    DebugOnly<nsresult> rv = runtime->GetOS(os);
    MOZ_ASSERT(NS_SUCCEEDED(rv));

    JSString* strVersion = JS_NewStringCopyZ(cx, os.get());
    if (!strVersion) {
      return false;
    }

    JS::Rooted<JS::Value> valVersion(cx, STRING_TO_JSVAL(strVersion));
    if (!JS_SetProperty(cx, objSys, "Name", valVersion)) {
      return false;
    }
  }

#if defined(DEBUG)
  JS::Rooted<JS::Value> valDebug(cx, JSVAL_TRUE);
  if (!JS_SetProperty(cx, objSys, "DEBUG", valDebug)) {
    return false;
  }
#endif

  // Build OS.Constants.Path

  JS::Rooted<JSObject*> objPath(cx);
  if (!(objPath = GetOrCreateObjectProperty(cx, objConstants, "Path"))) {
    return false;
  }

  // Locate libxul
  // Note that we don't actually provide the full path, only the name of the
  // library, which is sufficient to link to the library using js-ctypes.
  {
#if defined(XP_MACOSX)
    // Under MacOS X, for some reason, libxul is called simply "XUL"
    nsAutoString xulPath(NS_LITERAL_STRING("XUL"));
#else
    // On other platforms, libxul is a library "xul" with regular
    // library prefix/suffix
    nsAutoString xulPath;
    xulPath.Append(NS_LITERAL_STRING(DLL_PREFIX));
    xulPath.Append(NS_LITERAL_STRING("xul"));
    xulPath.Append(NS_LITERAL_STRING(DLL_SUFFIX));
#endif // defined(XP_MACOSX)

    if (!SetStringProperty(cx, objPath, "libxul", xulPath)) {
      return false;
    }
  }

  if (!SetStringProperty(cx, objPath, "libDir", gPaths->libDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "tmpDir", gPaths->tmpDir)) {
    return false;
  }

  // Configure profileDir only if it is available at this stage
  if (!gPaths->profileDir.IsVoid()
    && !SetStringProperty(cx, objPath, "profileDir", gPaths->profileDir)) {
    return false;
  }

  // Configure localProfileDir only if it is available at this stage
  if (!gPaths->localProfileDir.IsVoid()
    && !SetStringProperty(cx, objPath, "localProfileDir", gPaths->localProfileDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "homeDir", gPaths->homeDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "desktopDir", gPaths->desktopDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "userApplicationDataDir", gPaths->userApplicationDataDir)) {
    return false;
  }

#if defined(XP_WIN)
  if (!SetStringProperty(cx, objPath, "winAppDataDir", gPaths->winAppDataDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "winStartMenuProgsDir", gPaths->winStartMenuProgsDir)) {
    return false;
  }
#endif // defined(XP_WIN)

#if defined(XP_MACOSX)
  if (!SetStringProperty(cx, objPath, "macUserLibDir", gPaths->macUserLibDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "macLocalApplicationsDir", gPaths->macLocalApplicationsDir)) {
    return false;
  }
#endif // defined(XP_MACOSX)

  return true;
}
/**
 * Define OS-specific constants.
 *
 * This function creates or uses JS object |OS.Constants| to store
 * all its constants.
 */
bool DefineOSFileConstants(JSContext *cx, JS::Handle<JSObject*> global)
{
  MOZ_ASSERT(gInitialized);

  if (gPaths == nullptr) {
    // If an initialization error was ignored, we may end up with
    // |gInitialized == true| but |gPaths == nullptr|. We cannot
    // |MOZ_ASSERT| this, as this would kill precompile_cache.js,
    // so we simply return an error.
    JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr,
      JSMSG_CANT_OPEN, "OSFileConstants", "initialization has failed");
    return false;
  }

  JS::Rooted<JSObject*> objOS(cx);
  if (!(objOS = GetOrCreateObjectProperty(cx, global, "OS"))) {
    return false;
  }
  JS::Rooted<JSObject*> objConstants(cx);
  if (!(objConstants = GetOrCreateObjectProperty(cx, objOS, "Constants"))) {
    return false;
  }

  // Build OS.Constants.libc

  JS::Rooted<JSObject*> objLibc(cx);
  if (!(objLibc = GetOrCreateObjectProperty(cx, objConstants, "libc"))) {
    return false;
  }
  if (!dom::DefineConstants(cx, objLibc, gLibcProperties)) {
    return false;
  }

#if defined(XP_WIN)
  // Build OS.Constants.Win

  JS::Rooted<JSObject*> objWin(cx);
  if (!(objWin = GetOrCreateObjectProperty(cx, objConstants, "Win"))) {
    return false;
  }
  if (!dom::DefineConstants(cx, objWin, gWinProperties)) {
    return false;
  }
#endif // defined(XP_WIN)

  // Build OS.Constants.Sys

  JS::Rooted<JSObject*> objSys(cx);
  if (!(objSys = GetOrCreateObjectProperty(cx, objConstants, "Sys"))) {
    return false;
  }

#if defined(MOZ_WIDGET_GONK)
    JSString* strVersion = JS_NewStringCopyZ(cx, "Gonk");
    if (!strVersion){
      return false;
    }
    JS::Rooted<JS::Value> valVersion(cx, STRING_TO_JSVAL(strVersion));
    if (!JS_SetProperty(cx, objSys, "Name", valVersion)) {
      return false;
  }
#else
  nsCOMPtr<nsIXULRuntime> runtime = do_GetService(XULRUNTIME_SERVICE_CONTRACTID);
  if (runtime) {
    nsAutoCString os;
    DebugOnly<nsresult> rv = runtime->GetOS(os);
    MOZ_ASSERT(NS_SUCCEEDED(rv));

    JSString* strVersion = JS_NewStringCopyZ(cx, os.get());
    if (!strVersion) {
      return false;
    }

    JS::Rooted<JS::Value> valVersion(cx, STRING_TO_JSVAL(strVersion));
    if (!JS_SetProperty(cx, objSys, "Name", valVersion)) {
      return false;
    }
  }
#endif // defined(MOZ_WIDGET_GONK)

#if defined(DEBUG)
  JS::Rooted<JS::Value> valDebug(cx, JSVAL_TRUE);
  if (!JS_SetProperty(cx, objSys, "DEBUG", valDebug)) {
    return false;
  }
#endif

  dom::ConstantSpec umask_cs[] = {
    { "umask", UINT_TO_JSVAL(gUserUmask) },
    PROP_END
  };
  if (!dom::DefineConstants(cx, objSys, umask_cs)) {
      return false;
  }

  // Build OS.Constants.Path

  JS::Rooted<JSObject*> objPath(cx);
  if (!(objPath = GetOrCreateObjectProperty(cx, objConstants, "Path"))) {
    return false;
  }

  // Locate libxul
  // Note that we don't actually provide the full path, only the name of the
  // library, which is sufficient to link to the library using js-ctypes.

#if defined(XP_MACOSX)
  // Under MacOS X, for some reason, libxul is called simply "XUL",
  // and we need to provide the full path.
  nsAutoString libxul;
  libxul.Append(gPaths->libDir);
  libxul.AppendLiteral("/XUL");
#else
  // On other platforms, libxul is a library "xul" with regular
  // library prefix/suffix.
  nsAutoString libxul;
  libxul.AppendLiteral(DLL_PREFIX);
  libxul.AppendLiteral("xul");
  libxul.AppendLiteral(DLL_SUFFIX);
#endif // defined(XP_MACOSX)

  if (!SetStringProperty(cx, objPath, "libxul", libxul)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "libDir", gPaths->libDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "tmpDir", gPaths->tmpDir)) {
    return false;
  }

  // Configure profileDir only if it is available at this stage
  if (!gPaths->profileDir.IsVoid()
    && !SetStringProperty(cx, objPath, "profileDir", gPaths->profileDir)) {
    return false;
  }

  // Configure localProfileDir only if it is available at this stage
  if (!gPaths->localProfileDir.IsVoid()
    && !SetStringProperty(cx, objPath, "localProfileDir", gPaths->localProfileDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "homeDir", gPaths->homeDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "desktopDir", gPaths->desktopDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "userApplicationDataDir", gPaths->userApplicationDataDir)) {
    return false;
  }

#if defined(XP_WIN)
  if (!SetStringProperty(cx, objPath, "winAppDataDir", gPaths->winAppDataDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "winStartMenuProgsDir", gPaths->winStartMenuProgsDir)) {
    return false;
  }
#endif // defined(XP_WIN)

#if defined(XP_MACOSX)
  if (!SetStringProperty(cx, objPath, "macUserLibDir", gPaths->macUserLibDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "macLocalApplicationsDir", gPaths->macLocalApplicationsDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "macTrashDir", gPaths->macTrashDir)) {
    return false;
  }
#endif // defined(XP_MACOSX)

  // sqlite3 is linked from different places depending on the platform
  nsAutoString libsqlite3;
#if defined(ANDROID)
  // On Android, we use the system's libsqlite3
  libsqlite3.AppendLiteral(DLL_PREFIX);
  libsqlite3.AppendLiteral("sqlite3");
  libsqlite3.AppendLiteral(DLL_SUFFIX);
#elif defined(XP_WIN)
  // On Windows, for some reason, this is part of nss3.dll
  libsqlite3.AppendLiteral(DLL_PREFIX);
  libsqlite3.AppendLiteral("nss3");
  libsqlite3.AppendLiteral(DLL_SUFFIX);
#else
    // On other platforms, we link sqlite3 into libxul
  libsqlite3 = libxul;
#endif // defined(ANDROID) || defined(XP_WIN)

  if (!SetStringProperty(cx, objPath, "libsqlite3", libsqlite3)) {
    return false;
  }

  return true;
}
Beispiel #3
0
JSBool
js_ReportUncaughtException(JSContext *cx)
{
    jsval exn, *vp;
    JSObject *exnObject;
    void *mark;
    JSErrorReport *reportp, report;
    JSString *str;
    const char *bytes;
    JSBool ok;

    if (!JS_IsExceptionPending(cx))
        return JS_TRUE;

    if (!JS_GetPendingException(cx, &exn))
        return JS_FALSE;

    /*
     * Because js_ValueToString below could error and an exception object
     * could become unrooted, we must root exnObject.  Later, if exnObject is
     * non-null, we need to root other intermediates, so allocate an operand
     * stack segment to protect all of these values.
     */
    if (JSVAL_IS_PRIMITIVE(exn)) {
        exnObject = NULL;
        vp = NULL;
#ifdef __GNUC__         /* suppress bogus gcc warnings */
        mark = NULL;
#endif
    } else {
        exnObject = JSVAL_TO_OBJECT(exn);
        vp = js_AllocStack(cx, 5, &mark);
        if (!vp) {
            ok = JS_FALSE;
            goto out;
        }
        vp[0] = exn;
    }

#if JS_HAS_ERROR_EXCEPTIONS
    reportp = js_ErrorFromException(cx, exn);
#else
    reportp = NULL;
#endif

    /* XXX L10N angels cry once again (see also jsemit.c, /L10N gaffes/) */
    str = js_ValueToString(cx, exn);
    if (!str) {
        bytes = "unknown (can't convert to string)";
    } else {
        if (vp)
            vp[1] = STRING_TO_JSVAL(str);
        bytes = js_GetStringBytes(str);
    }
    ok = JS_TRUE;

    if (!reportp &&
        exnObject &&
        OBJ_GET_CLASS(cx, exnObject) == &ExceptionClass) {
        const char *filename;
        uint32 lineno;

        ok = JS_GetProperty(cx, exnObject, js_message_str, &vp[2]);
        if (!ok)
            goto out;
        if (JSVAL_IS_STRING(vp[2]))
            bytes = JS_GetStringBytes(JSVAL_TO_STRING(vp[2]));

        ok = JS_GetProperty(cx, exnObject, js_filename_str, &vp[3]);
        if (!ok)
            goto out;
        str = js_ValueToString(cx, vp[3]);
        if (!str) {
            ok = JS_FALSE;
            goto out;
        }
        filename = StringToFilename(cx, str);

        ok = JS_GetProperty(cx, exnObject, js_lineno_str, &vp[4]);
        if (!ok)
            goto out;
        ok = js_ValueToECMAUint32 (cx, vp[4], &lineno);
        if (!ok)
            goto out;

        reportp = &report;
        memset(&report, 0, sizeof report);
        report.filename = filename;
        report.lineno = (uintN) lineno;
    }

    if (!reportp) {
        JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
                             JSMSG_UNCAUGHT_EXCEPTION, bytes);
    } else {
        /* Flag the error as an exception. */
        reportp->flags |= JSREPORT_EXCEPTION;
        js_ReportErrorAgain(cx, bytes, reportp);
    }

    JS_ClearPendingException(cx);
out:
    if (exnObject)
        js_FreeStack(cx, mark);
    return ok;
}
Beispiel #4
0
JS_SetWatchPoint(JSContext *cx, JSObject *obj, jsval id,
                 JSWatchPointHandler handler, void *closure)
{
    JSAtom *atom;
    jsid propid;
    JSObject *pobj;
    JSScopeProperty *sprop;
    JSRuntime *rt;
    JSWatchPoint *wp;
    JSPropertyOp watcher;

    if (!OBJ_IS_NATIVE(obj)) {
        JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_CANT_WATCH,
                             OBJ_GET_CLASS(cx, obj)->name);
        return JS_FALSE;
    }

    if (JSVAL_IS_INT(id)) {
        propid = (jsid)id;
        atom = NULL;
    } else {
        atom = js_ValueToStringAtom(cx, id);
        if (!atom)
            return JS_FALSE;
        propid = (jsid)atom;
    }

    if (!js_LookupProperty(cx, obj, propid, &pobj, (JSProperty **)&sprop))
        return JS_FALSE;
    rt = cx->runtime;
    if (!sprop) {
        /* Check for a deleted symbol watchpoint, which holds its property. */
        sprop = js_FindWatchPoint(rt, OBJ_SCOPE(obj), propid);
        if (!sprop) {
            /* Make a new property in obj so we can watch for the first set. */
            if (!js_DefineProperty(cx, obj, propid, JSVAL_VOID,
                                   NULL, NULL, JSPROP_ENUMERATE,
                                   (JSProperty **)&sprop)) {
                sprop = NULL;
            }
        }
    } else if (pobj != obj) {
        /* Clone the prototype property so we can watch the right object. */
        jsval value;
        JSPropertyOp getter, setter;
        uintN attrs;

        if (OBJ_IS_NATIVE(pobj)) {
            value = SPROP_HAS_VALID_SLOT(sprop, OBJ_SCOPE(pobj))
                    ? LOCKED_OBJ_GET_SLOT(pobj, sprop->slot)
                    : JSVAL_VOID;
            getter = sprop->getter;
            setter = sprop->setter;
            attrs = sprop->attrs;
        } else {
            if (!OBJ_GET_PROPERTY(cx, pobj, id, &value)) {
                OBJ_DROP_PROPERTY(cx, pobj, (JSProperty *)sprop);
                return JS_FALSE;
            }
            getter = setter = JS_PropertyStub;
            attrs = JSPROP_ENUMERATE;
        }
        OBJ_DROP_PROPERTY(cx, pobj, (JSProperty *)sprop);

        if (!js_DefineProperty(cx, obj, propid, value, getter, setter, attrs,
                               (JSProperty **)&sprop)) {
            sprop = NULL;
        }
    }
    if (!sprop)
        return JS_FALSE;

    wp = FindWatchPoint(rt, OBJ_SCOPE(obj), propid);
    if (!wp) {
        watcher = js_WrapWatchedSetter(cx, propid, sprop->attrs, sprop->setter);
        if (!watcher)
            return JS_FALSE;

        wp = (JSWatchPoint *) JS_malloc(cx, sizeof *wp);
        if (!wp)
            return JS_FALSE;
        wp->handler = NULL;
        wp->closure = NULL;
        if (!js_AddRoot(cx, &wp->closure, "wp->closure")) {
            JS_free(cx, wp);
            return JS_FALSE;
        }
        JS_APPEND_LINK(&wp->links, &rt->watchPointList);
        wp->object = obj;
        wp->sprop = sprop;
        JS_ASSERT(sprop->setter != js_watch_set);
        wp->setter = sprop->setter;
        wp->nrefs = 1;
        sprop = js_ChangeNativePropertyAttrs(cx, obj, sprop, 0, sprop->attrs,
                                             sprop->getter, watcher);
        if (!sprop)
            return DropWatchPoint(cx, wp);
    }
    wp->handler = handler;
    wp->closure = closure;
    OBJ_DROP_PROPERTY(cx, obj, (JSProperty *)sprop);
    return JS_TRUE;
}
/**
 * Define OS-specific constants.
 *
 * This function creates or uses JS object |OS.Constants| to store
 * all its constants.
 */
bool DefineOSFileConstants(JSContext *cx, JSObject *global)
{
  MOZ_ASSERT(gInitialized);

  if (gPaths == NULL) {
    // If an initialization error was ignored, we may end up with
    // |gInitialized == true| but |gPaths == NULL|. We cannot
    // |MOZ_ASSERT| this, as this would kill precompile_cache.js,
    // so we simply return an error.
    JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
      JSMSG_CANT_OPEN, "OSFileConstants", "initialization has failed");
    return false;
  }

  JSObject *objOS;
  if (!(objOS = GetOrCreateObjectProperty(cx, global, "OS"))) {
    return false;
  }
  JSObject *objConstants;
  if (!(objConstants = GetOrCreateObjectProperty(cx, objOS, "Constants"))) {
    return false;
  }

  // Build OS.Constants.libc

  JSObject *objLibc;
  if (!(objLibc = GetOrCreateObjectProperty(cx, objConstants, "libc"))) {
    return false;
  }
  if (!dom::DefineConstants(cx, objLibc, gLibcProperties)) {
    return false;
  }

#if defined(XP_WIN)
  // Build OS.Constants.Win

  JSObject *objWin;
  if (!(objWin = GetOrCreateObjectProperty(cx, objConstants, "Win"))) {
    return false;
  }
  if (!dom::DefineConstants(cx, objWin, gWinProperties)) {
    return false;
  }
#endif // defined(XP_WIN)

  // Build OS.Constants.Sys

  JSObject *objSys;
  if (!(objSys = GetOrCreateObjectProperty(cx, objConstants, "Sys"))) {
    return false;
  }

  nsCOMPtr<nsIXULRuntime> runtime = do_GetService(XULRUNTIME_SERVICE_CONTRACTID);
  if (runtime) {
    nsAutoCString os;
    DebugOnly<nsresult> rv = runtime->GetOS(os);
    MOZ_ASSERT(NS_SUCCEEDED(rv));

    JSString* strVersion = JS_NewStringCopyZ(cx, os.get());
    if (!strVersion) {
      return false;
    }

    JS::Value valVersion = STRING_TO_JSVAL(strVersion);
    if (!JS_SetProperty(cx, objSys, "Name", &valVersion)) {
      return false;
    }
  }

  // Build OS.Constants.Path

  JSObject *objPath;
  if (!(objPath = GetOrCreateObjectProperty(cx, objConstants, "Path"))) {
    return false;
  }

  // Locate libxul
  {
    nsAutoString xulPath(gPaths->libDir);

    xulPath.Append(PR_GetDirectorySeparator());

#if defined(XP_MACOSX)
    // Under MacOS X, for some reason, libxul is called simply "XUL"
    xulPath.Append(NS_LITERAL_STRING("XUL"));
#else
    // On other platforms, libxul is a library "xul" with regular
    // library prefix/suffix
    xulPath.Append(NS_LITERAL_STRING(DLL_PREFIX));
    xulPath.Append(NS_LITERAL_STRING("xul"));
    xulPath.Append(NS_LITERAL_STRING(DLL_SUFFIX));
#endif // defined(XP_MACOSX)

    if (!SetStringProperty(cx, objPath, "libxul", xulPath)) {
      return false;
    }
  }

  if (!SetStringProperty(cx, objPath, "libDir", gPaths->libDir)) {
    return false;
  }

  if (!SetStringProperty(cx, objPath, "tmpDir", gPaths->tmpDir)) {
    return false;
  }

  // Configure profileDir only if it is available at this stage
  if (!gPaths->profileDir.IsVoid()
    && !SetStringProperty(cx, objPath, "profileDir", gPaths->profileDir)) {
    return false;
  }

  // Configure localProfileDir only if it is available at this stage
  if (!gPaths->localProfileDir.IsVoid()
    && !SetStringProperty(cx, objPath, "localProfileDir", gPaths->localProfileDir)) {
    return false;
  }

  return true;
}
Beispiel #6
0
void Interpret() {
  JS_ReportErrorNumber(js_GetErrorMessage, 0);
  
  // CHECK: call {{.*}}void ({{.*}}, ...) @JS_ReportErrorNumber({{.*}}@js_GetErrorMessage
}
Beispiel #7
0
/*
 * Convert a JS value to a Java value of the given type signature.  The cost
 * variable is incremented if coercion is required, e.g. the source value is
 * a string, but the target type is a boolean.
 *
 * Returns JS_FALSE if no conversion is possible, either because the jsval has
 * a type that is wholly incompatible with the Java value, or because a scalar
 * jsval can't be represented in a variable of the target type without loss of
 * precision, e.g. the source value is "4.2" but the destination type is byte.
 * If conversion is not possible and java_value is non-NULL, the JS error
 * reporter is called with an appropriate message.
 */  
JSBool
jsj_ConvertJSValueToJavaValue(JSContext *cx, JNIEnv *jEnv, jsval v_arg,
                              JavaSignature *signature,
                              int *cost, jvalue *java_value, JSBool *is_local_refp)
{
    JavaSignatureChar type;
    jsval v;
    JSBool success = JS_FALSE;

    /* Initialize to default case, in which no new Java object is
       synthesized to perform the conversion and, therefore, no JNI local
       references are being held. */
    *is_local_refp = JS_FALSE;   
    
    type = signature->type;
    v = v_arg;
    switch (type) {
    case JAVA_SIGNATURE_BOOLEAN:
        if (!JSVAL_IS_BOOLEAN(v)) {
            if (!JS_ConvertValue(cx, v, JSTYPE_BOOLEAN, &v))
                goto conversion_error;
            if (JSVAL_IS_VOID(v))
                goto conversion_error;
            (*cost)++;
        }
        if (java_value)
            java_value->z = (jboolean)(JSVAL_TO_BOOLEAN(v) == JS_TRUE);
        break;

    case JAVA_SIGNATURE_SHORT:
        JSVAL_TO_INTEGRAL_JVALUE(short, s, jshort, v, java_value);
        break;

    case JAVA_SIGNATURE_BYTE:
        JSVAL_TO_INTEGRAL_JVALUE(byte, b, jbyte, v, java_value);
        break;

    case JAVA_SIGNATURE_CHAR:
        /* A one-character string can be converted into a character */
        if (JSVAL_IS_STRING(v) && (JS_GetStringLength(JSVAL_TO_STRING(v)) == 1)) {
            v = INT_TO_JSVAL(*JS_GetStringChars(JSVAL_TO_STRING(v)));
        }
        JSVAL_TO_INTEGRAL_JVALUE(char, c, jchar, v, java_value);
        break;

    case JAVA_SIGNATURE_INT:
        JSVAL_TO_INTEGRAL_JVALUE(int, i, jint, v, java_value);
        break;

    case JAVA_SIGNATURE_LONG:
#if defined(XP_MAC) || (defined(XP_OS2) && !defined(HAVE_LONG_LONG))
        JSVAL_TO_JLONG_JVALUE(j, jlong, v, java_value);
#else
        JSVAL_TO_INTEGRAL_JVALUE(long, j, jlong, v, java_value);
#endif
        break;
    
    case JAVA_SIGNATURE_FLOAT:
        if (!JSVAL_IS_NUMBER(v)) {
            if (!JS_ConvertValue(cx, v, JSTYPE_NUMBER, &v))
                goto conversion_error;
            (*cost)++;
        }
        if (java_value) {
            if (JSVAL_IS_INT(v))
                java_value->f = (jfloat) JSVAL_TO_INT(v);
            else
                java_value->f = (jfloat) *JSVAL_TO_DOUBLE(v);
        }
        break;

    case JAVA_SIGNATURE_DOUBLE:
        if (!JSVAL_IS_NUMBER(v)) {
            if (!JS_ConvertValue(cx, v, JSTYPE_NUMBER, &v))
                goto conversion_error;
            (*cost)++;
        }
        if (java_value) {
            if (JSVAL_IS_INT(v))
                java_value->d = (jdouble) JSVAL_TO_INT(v);
            else
                java_value->d = (jdouble) *JSVAL_TO_DOUBLE(v);
        }
        break;

    /* Non-primitive (reference) type */
    default:
        JS_ASSERT(IS_REFERENCE_TYPE(type));
        if (!jsj_ConvertJSValueToJavaObject(cx, jEnv, v, signature, cost,
            &java_value->l, is_local_refp))
            goto conversion_error;
        break;

    case JAVA_SIGNATURE_UNKNOWN:
    case JAVA_SIGNATURE_VOID:
        JS_ASSERT(0);
        return JS_FALSE;
    }

    /* Success */
    return JS_TRUE;

numeric_conversion_error:
    success = JS_TRUE;
    /* Fall through ... */

conversion_error:

    if (java_value) {
        const char *jsval_string;
        const char *class_name;
        JSString *jsstr;

        jsval_string = NULL;
        jsstr = JS_ValueToString(cx, v_arg);
        if (jsstr)
            jsval_string = JS_GetStringBytes(jsstr);
        if (!jsval_string)
            jsval_string = "";
        
        class_name = jsj_ConvertJavaSignatureToHRString(cx, signature);
        JS_ReportErrorNumber(cx, jsj_GetErrorMessage, NULL, 
                             JSJMSG_CANT_CONVERT_JS, jsval_string,
                             class_name);

        return JS_FALSE;
    }
    return success;
}
Beispiel #8
0
JSBool
js_ReportUncaughtException(JSContext *cx)
{
    jsval exn;
    JSObject *exnObject;
    jsval roots[5];
    JSTempValueRooter tvr;
    JSErrorReport *reportp, report;
    JSString *str;
    const char *bytes;
    JSBool ok;

    if (!JS_IsExceptionPending(cx))
        return JS_TRUE;

    if (!JS_GetPendingException(cx, &exn))
        return JS_FALSE;

    memset(roots, 0, sizeof roots);
    JS_PUSH_TEMP_ROOT(cx, JS_ARRAY_LENGTH(roots), roots, &tvr);

    /*
     * Because js_ValueToString below could error and an exception object
     * could become unrooted, we must root exnObject.  Later, if exnObject is
     * non-null, we need to root other intermediates, so allocate an operand
     * stack segment to protect all of these values.
     */
    if (JSVAL_IS_PRIMITIVE(exn)) {
        exnObject = NULL;
    } else {
        exnObject = JSVAL_TO_OBJECT(exn);
        roots[0] = exn;
    }

    JS_ClearPendingException(cx);
    reportp = js_ErrorFromException(cx, exn);

    /* XXX L10N angels cry once again (see also jsemit.c, /L10N gaffes/) */
    str = js_ValueToString(cx, exn);
    if (!str) {
        bytes = "unknown (can't convert to string)";
    } else {
        roots[1] = STRING_TO_JSVAL(str);
        bytes = js_GetStringBytes(cx, str);
        if (!bytes) {
            ok = JS_FALSE;
            goto out;
        }
    }
    ok = JS_TRUE;

    if (!reportp &&
        exnObject &&
        OBJ_GET_CLASS(cx, exnObject) == &js_ErrorClass) {
        const char *filename;
        uint32 lineno;

        ok = JS_GetProperty(cx, exnObject, js_message_str, &roots[2]);
        if (!ok)
            goto out;
        if (JSVAL_IS_STRING(roots[2])) {
            bytes = js_GetStringBytes(cx, JSVAL_TO_STRING(roots[2]));
            if (!bytes) {
                ok = JS_FALSE;
                goto out;
            }
        }

        ok = JS_GetProperty(cx, exnObject, js_fileName_str, &roots[3]);
        if (!ok)
            goto out;
        str = js_ValueToString(cx, roots[3]);
        if (!str) {
            ok = JS_FALSE;
            goto out;
        }
        filename = StringToFilename(cx, str);
        if (!filename) {
            ok = JS_FALSE;
            goto out;
        }

        ok = JS_GetProperty(cx, exnObject, js_lineNumber_str, &roots[4]);
        if (!ok)
            goto out;
        lineno = js_ValueToECMAUint32 (cx, &roots[4]);
        ok = !JSVAL_IS_NULL(roots[4]);
        if (!ok)
            goto out;

        reportp = &report;
        memset(&report, 0, sizeof report);
        report.filename = filename;
        report.lineno = (uintN) lineno;
    }

    if (!reportp) {
        JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
                             JSMSG_UNCAUGHT_EXCEPTION, bytes);
    } else {
        /* Flag the error as an exception. */
        reportp->flags |= JSREPORT_EXCEPTION;

        /* Pass the exception object. */
        JS_SetPendingException(cx, exn);
        js_ReportErrorAgain(cx, bytes, reportp);
        JS_ClearPendingException(cx);
    }

out:
    JS_POP_TEMP_ROOT(cx, &tvr);
    return ok;
}