static List _reconstitutePositionalArgs()

in lib/src/mock.dart [347:399]

• 37 lines of code
• 6 McCabe index (conditional complexity)

  static List<dynamic> _reconstitutePositionalArgs(Invocation invocation) {
    final positionalArguments = <dynamic>[];
    final nullPositionalArguments =
        invocation.positionalArguments.where((arg) => arg == null);
    if (_storedArgs.length > nullPositionalArguments.length) {
      // More _positional_ ArgMatchers were stored than were actually passed as
      // positional arguments. There are three ways this call could have been
      // parsed and resolved:
      //
      // * an ArgMatcher was passed in [invocation] as a named argument, but
      //   without a name, and thus stored in [_storedArgs], something like
      //   `when(obj.fn(a: any))`,
      // * an ArgMatcher was passed in an expression which was passed in
      //   [invocation], and thus stored in [_storedArgs], something like
      //   `when(obj.fn(Foo(any)))`, or
      // * a combination of the above.
      _storedArgs.clear();
      _storedNamedArgs.clear();
      throw ArgumentError(
          'An argument matcher (like `any`) was either not used as an '
          'immediate argument to ${invocation.memberName} (argument matchers '
          'can only be used as an argument for the very method being stubbed '
          'or verified), or was used as a named argument without the Mockito '
          '"named" API (Each argument matcher that is used as a named argument '
          'needs to specify the name of the argument it is being used in. For '
          'example: `when(obj.fn(x: anyNamed("x")))`).');
    }
    var storedIndex = 0;
    var positionalIndex = 0;
    while (storedIndex < _storedArgs.length &&
        positionalIndex < invocation.positionalArguments.length) {
      var arg = _storedArgs[storedIndex];
      if (invocation.positionalArguments[positionalIndex] == null) {
        // Add the [ArgMatcher] given to the argument matching helper.
        positionalArguments.add(arg);
        storedIndex++;
        positionalIndex++;
      } else {
        // An argument matching helper was not used; add the [ArgMatcher] from
        // [invocation].
        positionalArguments
            .add(invocation.positionalArguments[positionalIndex]);
        positionalIndex++;
      }
    }
    while (positionalIndex < invocation.positionalArguments.length) {
      // Some trailing non-ArgMatcher arguments.
      positionalArguments.add(invocation.positionalArguments[positionalIndex]);
      positionalIndex++;
    }

    return positionalArguments;
  }