public void CreatesNewCollectionWhenAddingItems()
{
FailureMessages list = FailureMessages.Empty.With(FailureMessage.Expected("expectation"));
list.ToString().ShouldBe("expectation expected");
list.ShouldNotBeSameAs(FailureMessages.Empty);
}
public void CanIndicateErrorsWhichCausedBacktracking()
{
var position = new Position(3, 4);
FailureMessages failures = FailureMessages.Empty
.With(FailureMessage.Expected("a"))
.With(FailureMessage.Expected("b"));
var failure = (BacktrackFailureMessage)FailureMessage.Backtrack(position, failures);
failure.Position.ShouldBe(position);
failure.Failures.ShouldBe(failures);
failure.ToString().ShouldBe("(3, 4): a or b expected");
}
internal BacktrackFailureMessage(Position position, FailureMessages failures)
{
Position = position;
Failures = failures;
}
public static FailureMessage Backtrack(Position position, FailureMessages errors) => new BacktrackFailureMessage(position, errors);
public GeneralFailure(TokenStream unparsedTokens, FailureMessages messages)
{
UnparsedTokens = unparsedTokens;
FailureMessages = messages;
}
