コード例 #1
0
ファイル: jsbool.cpp プロジェクト: mxOBS/deb-pkg_icedove
MOZ_ALWAYS_INLINE bool
bool_toSource_impl(JSContext *cx, CallArgs args)
{
    HandleValue thisv = args.thisv();
    JS_ASSERT(IsBoolean(thisv));

    bool b = thisv.isBoolean() ? thisv.toBoolean() : thisv.toObject().as<BooleanObject>().unbox();

    StringBuffer sb(cx);
    if (!sb.append("(new Boolean(") || !BooleanToStringBuffer(b, sb) || !sb.append("))"))
        return false;

    JSString *str = sb.finishString();
    if (!str)
        return false;
    args.rval().setString(str);
    return true;
}
コード例 #2
0
ファイル: MapObject.cpp プロジェクト: cstipkovic/gecko-dev
bool
SetIteratorObject::next_impl(JSContext* cx, const CallArgs& args)
{
    SetIteratorObject& thisobj = args.thisv().toObject().as<SetIteratorObject>();
    ValueSet::Range* range = thisobj.range();
    RootedValue value(cx);
    bool done;

    if (!range || range->empty()) {
        js_delete(range);
        thisobj.setReservedSlot(RangeSlot, PrivateValue(nullptr));
        value.setUndefined();
        done = true;
    } else {
        switch (thisobj.kind()) {
          case SetObject::Values:
            value = range->front().get();
            break;

          case SetObject::Entries: {
            JS::AutoValueArray<2> pair(cx);
            pair[0].set(range->front().get());
            pair[1].set(range->front().get());

            JSObject* pairObj = NewDenseCopiedArray(cx, 2, pair.begin());
            if (!pairObj)
              return false;
            value.setObject(*pairObj);
            break;
          }
        }
        range->popFront();
        done = false;
    }

    RootedObject result(cx, CreateItrResultObject(cx, value, done));
    if (!result)
        return false;
    args.rval().setObject(*result);

    return true;
}
コード例 #3
0
ファイル: Object.cpp プロジェクト: armikhael/cunaguaro
/* ES5 15.2.4.7. */
static bool
obj_propertyIsEnumerable(JSContext *cx, unsigned argc, Value *vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);

    /* Step 1. */
    RootedId id(cx);
    if (!ValueToId<CanGC>(cx, args.get(0), &id))
        return false;

    /* Step 2. */
    RootedObject obj(cx, ToObject(cx, args.thisv()));
    if (!obj)
        return false;

    /* Steps 3. */
    RootedObject pobj(cx);
    RootedShape prop(cx);
    if (!JSObject::lookupGeneric(cx, obj, id, &pobj, &prop))
        return false;

    /* Step 4. */
    if (!prop) {
        args.rval().setBoolean(false);
        return true;
    }

    if (pobj != obj) {
        vp->setBoolean(false);
        return true;
    }

    /* Step 5. */
    unsigned attrs;
    if (!JSObject::getGenericAttributes(cx, pobj, id, &attrs))
        return false;

    args.rval().setBoolean((attrs & JSPROP_ENUMERATE) != 0);
    return true;
}
コード例 #4
0
static JSBool
WeakMap_set(JSContext *cx, uintN argc, Value *vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);

    bool ok;
    JSObject *obj = NonGenericMethodGuard(cx, args, WeakMap_set, &WeakMapClass, &ok);
    if (!obj)
        return ok;

    if (args.length() < 1) {
        JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_MORE_ARGS_NEEDED,
                             "WeakMap.set", "0", "s");
        return false;
    }
    JSObject *key = NonNullObject(cx, &args[0]);
    if (!key)
        return false;
    Value value = (args.length() > 1) ? args[1] : UndefinedValue();

    ObjectValueMap *map = GetObjectMap(obj);
    if (!map) {
        map = cx->new_<ObjectValueMap>(cx);
        if (!map->init()) {
            cx->delete_(map);
            goto out_of_memory;
        }
        obj->setPrivate(map);
    }

    args.thisv() = UndefinedValue();
    if (!map->put(key, value))
        goto out_of_memory;
    return true;

  out_of_memory:
    JS_ReportOutOfMemory(cx);
    return false;
}
コード例 #5
0
ファイル: Object.cpp プロジェクト: logicoftekk/cyberfox
/* ES5 15.2.4.6. */
static bool
obj_isPrototypeOf(JSContext* cx, unsigned argc, Value* vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);

    /* Step 1. */
    if (args.length() < 1 || !args[0].isObject()) {
        args.rval().setBoolean(false);
        return true;
    }

    /* Step 2. */
    RootedObject obj(cx, ToObject(cx, args.thisv()));
    if (!obj)
        return false;

    /* Step 3. */
    bool isDelegate;
    if (!IsDelegate(cx, obj, args[0], &isDelegate))
        return false;
    args.rval().setBoolean(isDelegate);
    return true;
}
コード例 #6
0
static bool
XPC_WN_Shared_toPrimitive(JSContext* cx, unsigned argc, Value* vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);

    RootedObject obj(cx);
    if (!JS_ValueToObject(cx, args.thisv(), &obj))
        return false;
    XPCCallContext ccx(cx, obj);
    XPCWrappedNative* wrapper = ccx.GetWrapper();
    THROW_AND_RETURN_IF_BAD_WRAPPER(cx, wrapper);

    JSType hint;
    if (!GetFirstArgumentAsTypeHint(cx, args, &hint))
        return false;

    if (hint == JSTYPE_NUMBER) {
        args.rval().set(JS_GetNaNValue(cx));
        return true;
    }

    MOZ_ASSERT(hint == JSTYPE_STRING || hint == JSTYPE_VOID);
    ccx.SetName(ccx.GetContext()->GetStringID(XPCJSContext::IDX_TO_STRING));
    ccx.SetArgsAndResultPtr(0, nullptr, args.rval().address());

    XPCNativeMember* member = ccx.GetMember();
    if (member && member->IsMethod()) {
        if (!XPCWrappedNative::CallMethod(ccx))
            return false;

        if (args.rval().isPrimitive())
            return true;
    }

    // else...
    return ToStringGuts(ccx);
}
コード例 #7
0
ファイル: MapObject.cpp プロジェクト: cstipkovic/gecko-dev
bool
MapObject::delete_impl(JSContext *cx, const CallArgs& args)
{
    // MapObject::mark does not mark deleted entries. Incremental GC therefore
    // requires that no HeapPtr<Value> objects pointing to heap values be left
    // alive in the ValueMap.
    //
    // OrderedHashMap::remove() doesn't destroy the removed entry. It merely
    // calls OrderedHashMap::MapOps::makeEmpty. But that is sufficient, because
    // makeEmpty clears the value by doing e->value = Value(), and in the case
    // of a ValueMap, Value() means HeapPtr<Value>(), which is the same as
    // HeapPtr<Value>(UndefinedValue()).
    MOZ_ASSERT(MapObject::is(args.thisv()));

    ValueMap& map = extract(args);
    ARG0_KEY(cx, args, key);
    bool found;
    if (!map.remove(key, &found)) {
        ReportOutOfMemory(cx);
        return false;
    }
    args.rval().setBoolean(found);
    return true;
}
コード例 #8
0
ファイル: ModuleObject.cpp プロジェクト: WuChengLin/gecko-dev
static bool
ModuleValueGetterImpl(JSContext* cx, CallArgs args)
{
    args.rval().set(ValueGetter(&args.thisv().toObject().as<T>()));
    return true;
}
コード例 #9
0
ファイル: Object.cpp プロジェクト: armikhael/cunaguaro
    if (!str)
        return false;
    args.rval().setString(str);
    return true;
}

/* ES5 15.2.4.3. */
static bool
obj_toLocaleString(JSContext *cx, unsigned argc, Value *vp)
{
    JS_CHECK_RECURSION(cx, return false);

    CallArgs args = CallArgsFromVp(argc, vp);

    /* Step 1. */
    RootedObject obj(cx, ToObject(cx, args.thisv()));
    if (!obj)
        return false;

    /* Steps 2-4. */
    RootedId id(cx, NameToId(cx->names().toString));
    return obj->callMethod(cx, id, 0, nullptr, args.rval());
}

static bool
obj_valueOf(JSContext *cx, unsigned argc, Value *vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);
    RootedObject obj(cx, ToObject(cx, args.thisv()));
    if (!obj)
        return false;
コード例 #10
0
ファイル: MapObject.cpp プロジェクト: cstipkovic/gecko-dev
bool
MapObject::iterator_impl(JSContext* cx, const CallArgs& args, IteratorKind kind)
{
    RootedObject obj(cx, &args.thisv().toObject());
    return iterator(cx, kind, obj, args.rval());
}
コード例 #11
0
ファイル: MapObject.cpp プロジェクト: cstipkovic/gecko-dev
bool
MapObject::get_impl(JSContext* cx, const CallArgs& args)
{
    RootedObject obj(cx, &args.thisv().toObject());
    return get(cx, obj, args.get(0), args.rval());
}
コード例 #12
0
ファイル: jsexn.cpp プロジェクト: Wafflespeanut/gecko-dev
/*
 * Return a string that may eval to something similar to the original object.
 */
static bool
exn_toSource(JSContext* cx, unsigned argc, Value* vp)
{
    if (!CheckRecursionLimit(cx))
        return false;
    CallArgs args = CallArgsFromVp(argc, vp);

    RootedObject obj(cx, ToObject(cx, args.thisv()));
    if (!obj)
        return false;

    RootedValue nameVal(cx);
    RootedString name(cx);
    if (!GetProperty(cx, obj, obj, cx->names().name, &nameVal) ||
        !(name = ToString<CanGC>(cx, nameVal)))
    {
        return false;
    }

    RootedValue messageVal(cx);
    RootedString message(cx);
    if (!GetProperty(cx, obj, obj, cx->names().message, &messageVal) ||
        !(message = ValueToSource(cx, messageVal)))
    {
        return false;
    }

    RootedValue filenameVal(cx);
    RootedString filename(cx);
    if (!GetProperty(cx, obj, obj, cx->names().fileName, &filenameVal) ||
        !(filename = ValueToSource(cx, filenameVal)))
    {
        return false;
    }

    RootedValue linenoVal(cx);
    uint32_t lineno;
    if (!GetProperty(cx, obj, obj, cx->names().lineNumber, &linenoVal) ||
        !ToUint32(cx, linenoVal, &lineno))
    {
        return false;
    }

    StringBuffer sb(cx);
    if (!sb.append("(new ") || !sb.append(name) || !sb.append("("))
        return false;

    if (!sb.append(message))
        return false;

    if (!filename->empty()) {
        if (!sb.append(", ") || !sb.append(filename))
            return false;
    }
    if (lineno != 0) {
        /* We have a line, but no filename, add empty string */
        if (filename->empty() && !sb.append(", \"\""))
                return false;

        JSString* linenumber = ToString<CanGC>(cx, linenoVal);
        if (!linenumber)
            return false;
        if (!sb.append(", ") || !sb.append(linenumber))
            return false;
    }

    if (!sb.append("))"))
        return false;

    JSString* str = sb.finishString();
    if (!str)
        return false;
    args.rval().setString(str);
    return true;
}
コード例 #13
0
static bool
ProtoSetterImpl(JSContext *cx, CallArgs args)
{
    JS_ASSERT(TestProtoSetterThis(args.thisv()));

    HandleValue thisv = args.thisv();
    if (thisv.isPrimitive()) {
        JS_ASSERT(!thisv.isNullOrUndefined());

        // Mutating a boxed primitive's [[Prototype]] has no side effects.
        args.rval().setUndefined();
        return true;
    }

    if (!cx->runningWithTrustedPrincipals())
        ++sSetProtoCalled;

    Rooted<JSObject*> obj(cx, &args.thisv().toObject());

    /* ES5 8.6.2 forbids changing [[Prototype]] if not [[Extensible]]. */
    bool extensible;
    if (!JSObject::isExtensible(cx, obj, &extensible))
        return false;
    if (!extensible) {
        obj->reportNotExtensible(cx);
        return false;
    }

    /*
     * Disallow mutating the [[Prototype]] of a proxy that wasn't simply
     * wrapping some other object.  Also disallow it on ArrayBuffer objects,
     * which due to their complicated delegate-object shenanigans can't easily
     * have a mutable [[Prototype]].
     */
    if (obj->is<ProxyObject>() || obj->is<ArrayBufferObject>()) {
        JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr, JSMSG_INCOMPATIBLE_PROTO,
                             "Object", "__proto__ setter",
                             obj->is<ProxyObject>() ? "Proxy" : "ArrayBuffer");
        return false;
    }

    /* Do nothing if __proto__ isn't being set to an object or null. */
    if (args.length() == 0 || !args[0].isObjectOrNull()) {
        args.rval().setUndefined();
        return true;
    }

    Rooted<JSObject*> newProto(cx, args[0].toObjectOrNull());

    unsigned dummy;
    RootedId nid(cx, NameToId(cx->names().proto));
    RootedValue v(cx);
    if (!CheckAccess(cx, obj, nid, JSAccessMode(JSACC_PROTO | JSACC_WRITE), &v, &dummy))
        return false;

    if (!SetClassAndProto(cx, obj, obj->getClass(), newProto, true))
        return false;

    args.rval().setUndefined();
    return true;
}
コード例 #14
0
ファイル: Object.cpp プロジェクト: hahajung/mozilla-central
static bool
obj_toSource(JSContext *cx, unsigned argc, Value *vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);
    JS_CHECK_RECURSION(cx, return false);

    RootedObject obj(cx, ToObject(cx, args.thisv()));
    if (!obj)
        return false;

    /* If outermost, we need parentheses to be an expression, not a block. */
    bool outermost = (cx->cycleDetectorSet.count() == 0);

    AutoCycleDetector detector(cx, obj);
    if (!detector.init())
        return false;
    if (detector.foundCycle()) {
        JSString *str = js_NewStringCopyZ<CanGC>(cx, "{}");
        if (!str)
            return false;
        args.rval().setString(str);
        return true;
    }

    StringBuffer buf(cx);
    if (outermost && !buf.append('('))
        return false;
    if (!buf.append('{'))
        return false;

    RootedValue v0(cx), v1(cx);
    MutableHandleValue val[2] = {&v0, &v1};

    RootedString str0(cx), str1(cx);
    MutableHandleString gsop[2] = {&str0, &str1};

    AutoIdVector idv(cx);
    if (!GetPropertyNames(cx, obj, JSITER_OWNONLY, &idv))
        return false;

    bool comma = false;
    for (size_t i = 0; i < idv.length(); ++i) {
        RootedId id(cx, idv[i]);
        RootedObject obj2(cx);
        RootedShape shape(cx);
        if (!JSObject::lookupGeneric(cx, obj, id, &obj2, &shape))
            return false;

        /*  Decide early whether we prefer get/set or old getter/setter syntax. */
        int valcnt = 0;
        if (shape) {
            bool doGet = true;
            if (obj2->isNative() && !IsImplicitDenseElement(shape)) {
                unsigned attrs = shape->attributes();
                if (attrs & JSPROP_GETTER) {
                    doGet = false;
                    val[valcnt].set(shape->getterValue());
                    gsop[valcnt].set(cx->names().get);
                    valcnt++;
                }
                if (attrs & JSPROP_SETTER) {
                    doGet = false;
                    val[valcnt].set(shape->setterValue());
                    gsop[valcnt].set(cx->names().set);
                    valcnt++;
                }
            }
            if (doGet) {
                valcnt = 1;
                gsop[0].set(NULL);
                if (!JSObject::getGeneric(cx, obj, obj, id, val[0]))
                    return false;
            }
        }

        /* Convert id to a linear string. */
        RootedValue idv(cx, IdToValue(id));
        JSString *s = ToString<CanGC>(cx, idv);
        if (!s)
            return false;
        Rooted<JSLinearString*> idstr(cx, s->ensureLinear(cx));
        if (!idstr)
            return false;

        /*
         * If id is a string that's not an identifier, or if it's a negative
         * integer, then it must be quoted.
         */
        if (JSID_IS_ATOM(id)
            ? !IsIdentifier(idstr)
            : (!JSID_IS_INT(id) || JSID_TO_INT(id) < 0))
        {
            s = js_QuoteString(cx, idstr, jschar('\''));
            if (!s || !(idstr = s->ensureLinear(cx)))
                return false;
        }

        for (int j = 0; j < valcnt; j++) {
            /*
             * Censor an accessor descriptor getter or setter part if it's
             * undefined.
             */
            if (gsop[j] && val[j].isUndefined())
                continue;

            /* Convert val[j] to its canonical source form. */
            RootedString valstr(cx, ValueToSource(cx, val[j]));
            if (!valstr)
                return false;
            const jschar *vchars = valstr->getChars(cx);
            if (!vchars)
                return false;
            size_t vlength = valstr->length();

            /*
             * Remove '(function ' from the beginning of valstr and ')' from the
             * end so that we can put "get" in front of the function definition.
             */
            if (gsop[j] && IsFunctionObject(val[j])) {
                const jschar *start = vchars;
                const jschar *end = vchars + vlength;

                uint8_t parenChomp = 0;
                if (vchars[0] == '(') {
                    vchars++;
                    parenChomp = 1;
                }

                /* Try to jump "function" keyword. */
                if (vchars)
                    vchars = js_strchr_limit(vchars, ' ', end);

                /*
                 * Jump over the function's name: it can't be encoded as part
                 * of an ECMA getter or setter.
                 */
                if (vchars)
                    vchars = js_strchr_limit(vchars, '(', end);

                if (vchars) {
                    if (*vchars == ' ')
                        vchars++;
                    vlength = end - vchars - parenChomp;
                } else {
                    gsop[j].set(NULL);
                    vchars = start;
                }
            }

            if (comma && !buf.append(", "))
                return false;
            comma = true;

            if (gsop[j])
                if (!buf.append(gsop[j]) || !buf.append(' '))
                    return false;

            if (!buf.append(idstr))
                return false;
            if (!buf.append(gsop[j] ? ' ' : ':'))
                return false;

            if (!buf.append(vchars, vlength))
                return false;
        }
    }

    if (!buf.append('}'))
        return false;
    if (outermost && !buf.append(')'))
        return false;

    JSString *str = buf.finishString();
    if (!str)
        return false;
    args.rval().setString(str);
    return true;
}
コード例 #15
0
ファイル: XPCShellImpl.cpp プロジェクト: ppbao/mozilla-os2
static bool
GetLocationProperty(JSContext* cx, unsigned argc, Value* vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);
    if (!args.thisv().isObject()) {
        JS_ReportError(cx, "Unexpected this value for GetLocationProperty");
        return false;
    }
#if !defined(XP_WIN) && !defined(XP_UNIX)
    //XXX: your platform should really implement this
    return false;
#else
    JS::AutoFilename filename;
    if (JS::DescribeScriptedCaller(cx, &filename) && filename.get()) {
        nsresult rv;
        nsCOMPtr<nsIXPConnect> xpc =
            do_GetService(kXPConnectServiceContractID, &rv);

#if defined(XP_WIN)
        // convert from the system codepage to UTF-16
        int bufferSize = MultiByteToWideChar(CP_ACP, 0, filename.get(),
                                             -1, nullptr, 0);
        nsAutoString filenameString;
        filenameString.SetLength(bufferSize);
        MultiByteToWideChar(CP_ACP, 0, filename.get(),
                            -1, (LPWSTR)filenameString.BeginWriting(),
                            filenameString.Length());
        // remove the null terminator
        filenameString.SetLength(bufferSize - 1);

        // replace forward slashes with backslashes,
        // since nsLocalFileWin chokes on them
        char16_t* start = filenameString.BeginWriting();
        char16_t* end = filenameString.EndWriting();

        while (start != end) {
            if (*start == L'/')
                *start = L'\\';
            start++;
        }
#elif defined(XP_UNIX)
        NS_ConvertUTF8toUTF16 filenameString(filename.get());
#endif

        nsCOMPtr<nsIFile> location;
        if (NS_SUCCEEDED(rv)) {
            rv = NS_NewLocalFile(filenameString,
                                 false, getter_AddRefs(location));
        }

        if (!location && gWorkingDirectory) {
            // could be a relative path, try appending it to the cwd
            // and then normalize
            nsAutoString absolutePath(*gWorkingDirectory);
            absolutePath.Append(filenameString);

            rv = NS_NewLocalFile(absolutePath,
                                 false, getter_AddRefs(location));
        }

        if (location) {
            nsCOMPtr<nsIXPConnectJSObjectHolder> locationHolder;

            bool symlink;
            // don't normalize symlinks, because that's kind of confusing
            if (NS_SUCCEEDED(location->IsSymlink(&symlink)) &&
                !symlink)
                location->Normalize();
            rv = xpc->WrapNative(cx, &args.thisv().toObject(), location,
                                 NS_GET_IID(nsIFile),
                                 getter_AddRefs(locationHolder));

            if (NS_SUCCEEDED(rv) &&
                locationHolder->GetJSObject()) {
                args.rval().setObject(*locationHolder->GetJSObject());
            }
        }
    }

    return true;
#endif
}
コード例 #16
0
    if (!str)
        return false;
    args.rval().setString(str);
    return true;
}

/* ES5 15.2.4.3. */
static JSBool
obj_toLocaleString(JSContext *cx, unsigned argc, Value *vp)
{
    JS_CHECK_RECURSION(cx, return false);

    CallArgs args = CallArgsFromVp(argc, vp);

    /* Step 1. */
    JSObject *obj = ToObject(cx, args.thisv());
    if (!obj)
        return false;

    /* Steps 2-4. */
    RootedId id(cx, NameToId(cx->names().toString));
    return obj->callMethod(cx, id, 0, NULL, args.rval());
}

static JSBool
obj_valueOf(JSContext *cx, unsigned argc, Value *vp)
{
    CallArgs args = CallArgsFromVp(argc, vp);
    JSObject *obj = ToObject(cx, args.thisv());
    if (!obj)
        return false;