小众语言 torque 如何使用 markdown 代码块高亮

v8 使用的 torque 语言，使用 cpp, Javascript, typescript 作为代码块的语言，高亮显示得都不好，有什么办法吗？ 举个例子，下面是用 typescript ，就会高亮过多内容

transitioning macro RegExpPrototypeExecBodyWithoutResultFast( implicit context: Context)(regexp: JSRegExp, string: String): RegExpMatchInfo labels IfDidNotMatch { const lastIndex = LoadLastIndexAsLength(regexp, true); return RegExpPrototypeExecBodyWithoutResult(regexp, string, lastIndex, true) otherwise IfDidNotMatch; } 

下面是用 cpp ，最后一段不知道怎么识别错误了，全高亮成某一个东西了

transitioning macro RegExpExectransitioning macro RegExpExec( implicit context: Context)(receiver: JSReceiver, string: String): JSAny { // Take the slow path of fetching the exec property, calling it, and // verifying its return value. const exec = GetProperty(receiver, 'exec'); // Is {exec} callable? typeswitch (exec) { case (execCallable: Callable): { const result = Call(context, execCallable, receiver, string); if (result != Null) { ThrowIfNotJSReceiver( result, MessageTemplate::kInvalidRegExpExecResult, ''); } return result; } case (Object): { const regexp = Cast<JSRegExp>(receiver) otherwise ThrowTypeError( MessageTemplate::kIncompatibleMethodReceiver, 'RegExp.prototype.exec', receiver); return RegExpPrototypeExecSlow(regexp, string); } } }