Chain chainFor()

in lib/src/stack_zone_specification.dart [89:108]

• 15 lines of code
• 5 McCabe index (conditional complexity)

  Chain chainFor(StackTrace? trace) {
    if (trace is Chain) return trace;
    trace ??= StackTrace.current;

    var previous = _chains[trace] ?? _currentNode;
    if (previous == null) {
      // If there's no [_currentNode], we're running synchronously beneath
      // [Chain.capture] and we should fall back to the VM's stack chaining. We
      // can't use [Chain.from] here because it'll just call [chainFor] again.
      if (trace is Trace) return Chain([trace]);
      return LazyChain(() => Chain.parse(trace!.toString()));
    } else {
      if (trace is! Trace) {
        var original = trace;
        trace = LazyTrace(() => Trace.parse(_trimVMChain(original)));
      }

      return _Node(trace, previous).toChain();
    }
  }