C++ (Cpp) MutableHandleValue::isNullOrUndefined Exemples

Exemple #1

Fichier : SelfHosting.cpp Projet : multi-sim/releases-mozilla-central

static bool
CloneValue(JSContext *cx, MutableHandleValue vp, CloneMemory &clonedObjects)
{
    if (vp.isObject()) {
        RootedObject obj(cx, &vp.toObject());
        RootedObject clone(cx, CloneObject(cx, obj, clonedObjects));
        if (!clone)
            return false;
        vp.setObject(*clone);
    } else if (vp.isBoolean() || vp.isNumber() || vp.isNullOrUndefined()) {
        // Nothing to do here: these are represented inline in the value
    } else if (vp.isString()) {
        Rooted<JSStableString*> str(cx, vp.toString()->ensureStable(cx));
        if (!str)
            return false;
        RootedString clone(cx, js_NewStringCopyN<CanGC>(cx, str->chars().get(), str->length()));
        if (!clone)
            return false;
        vp.setString(clone);
    } else {
        if (JSString *valSrc = JS_ValueToSource(cx, vp))
            printf("Error: Can't yet clone value: %s\n", JS_EncodeString(cx, valSrc));
        return false;
    }
    return true;
}

Exemple #2

static bool
CloneValue(JSContext *cx, MutableHandleValue vp, CloneMemory &clonedObjects)
{
    if (vp.isObject()) {
        RootedObject obj(cx, &vp.toObject());
        RootedObject clone(cx, CloneObject(cx, obj, clonedObjects));
        if (!clone)
            return false;
        vp.setObject(*clone);
    } else if (vp.isBoolean() || vp.isNumber() || vp.isNullOrUndefined()) {
        // Nothing to do here: these are represented inline in the value
    } else if (vp.isString()) {
        Rooted<JSStableString*> str(cx, vp.toString()->ensureStable(cx));
        if (!str)
            return false;
        RootedString clone(cx, js_NewStringCopyN<CanGC>(cx, str->chars().get(), str->length()));
        if (!clone)
            return false;
        vp.setString(clone);
    } else {
        MOZ_ASSUME_UNREACHABLE("Self-hosting CloneValue can't clone given value.");
    }
    return true;
}