C++ (Cpp) JSWebAssemblyTable::length Examples

Example #1

File: WebAssemblyTablePrototype.cpp Project: wolfviking0/webcl-webkit

static EncodedJSValue JSC_HOST_CALL webAssemblyTableProtoFuncSet(ExecState* exec)
{
    VM& vm = exec->vm();
    auto throwScope = DECLARE_THROW_SCOPE(vm);

    JSWebAssemblyTable* table = getTable(exec, vm, exec->thisValue());
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());

    JSValue value = exec->argument(1);
    WebAssemblyFunction* wasmFunction;
    WebAssemblyWrapperFunction* wasmWrapperFunction;
    if (!value.isNull() && !isWebAssemblyHostFunction(vm, value, wasmFunction, wasmWrapperFunction))
        return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, "WebAssembly.Table.prototype.set expects the second argument to be null or an instance of WebAssembly.Function"_s)));

    uint32_t index = toNonWrappingUint32(exec, exec->argument(0));
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());

    if (index >= table->length())
        return JSValue::encode(throwException(exec, throwScope, createRangeError(exec, "WebAssembly.Table.prototype.set expects an integer less than the length of the table"_s)));

    if (value.isNull())
        table->clearFunction(index);
    else {
        ASSERT(value.isObject() && isWebAssemblyHostFunction(vm, jsCast<JSObject*>(value), wasmFunction, wasmWrapperFunction));
        ASSERT(!!wasmFunction || !!wasmWrapperFunction);
        if (wasmFunction)
            table->setFunction(vm, index, wasmFunction);
        else
            table->setFunction(vm, index, wasmWrapperFunction);
    }
    
    return JSValue::encode(jsUndefined());
}

Example #2

File: WebAssemblyTablePrototype.cpp Project: wolfviking0/webcl-webkit

static EncodedJSValue JSC_HOST_CALL webAssemblyTableProtoFuncLength(ExecState* exec)
{
    VM& vm = exec->vm();
    auto throwScope = DECLARE_THROW_SCOPE(vm);

    JSWebAssemblyTable* table = getTable(exec, vm, exec->thisValue());
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
    return JSValue::encode(jsNumber(table->length()));
}

Example #3

File: WebAssemblyTablePrototype.cpp Project: wolfviking0/webcl-webkit

static EncodedJSValue JSC_HOST_CALL webAssemblyTableProtoFuncGet(ExecState* exec)
{
    VM& vm = exec->vm();
    auto throwScope = DECLARE_THROW_SCOPE(vm);

    JSWebAssemblyTable* table = getTable(exec, vm, exec->thisValue());
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());

    uint32_t index = toNonWrappingUint32(exec, exec->argument(0));
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
    if (index >= table->length())
        return JSValue::encode(throwException(exec, throwScope, createRangeError(exec, "WebAssembly.Table.prototype.get expects an integer less than the length of the table"_s)));

    if (JSObject* result = table->getFunction(index))
        return JSValue::encode(result);
    return JSValue::encode(jsNull());
}

Example #4

File: WebAssemblyTablePrototype.cpp Project: wolfviking0/webcl-webkit

static EncodedJSValue JSC_HOST_CALL webAssemblyTableProtoFuncGrow(ExecState* exec)
{
    VM& vm = exec->vm();
    auto throwScope = DECLARE_THROW_SCOPE(vm);

    JSWebAssemblyTable* table = getTable(exec, vm, exec->thisValue());
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());

    uint32_t delta = toNonWrappingUint32(exec, exec->argument(0));
    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());

    uint32_t oldLength = table->length();

    if (!table->grow(delta))
        return JSValue::encode(throwException(exec, throwScope, createRangeError(exec, "WebAssembly.Table.prototype.grow could not grow the table"_s)));

    return JSValue::encode(jsNumber(oldLength));
}