private static bool TryParseSecondaryAddress(ref ParserState state, out SecondaryAddressSyntaxNode result)
{
result = default;
var snapshot = state;
state.ConsumeWhiteSpace();
foreach (var(expanded, abbreviated, requiresRange) in PostalDesignators.SecondaryAddressUnitDesignators)
{
if (!requiresRange && state.TryConsume(t => t.Matches(expanded) || t.Matches(abbreviated)))
{
result = new SecondaryAddressSyntaxNode(abbreviated, state.TakeBuffer());
return(true);
}
}
if (!TryParseStreetSuffix(ref state, out _) && TryParseRange(ref state, out var rangeUnitIdentifier))
{
state.ConsumeWhiteSpace();
string designator = null;
if (state.TryConsume(t => t.IsOctothorpe))
{
designator = "#";
state.ConsumeWhiteSpace();
}
if (state.TryConsume(t => t.IsCommaOrPeriod))
{
state.ConsumeWhiteSpace();
}
foreach (var(expanded, abbreviated, _) in PostalDesignators.SecondaryAddressUnitDesignators)
{
if (state.TryConsume(t => t.Matches(expanded) || t.Matches(abbreviated)))
{
designator = abbreviated;
break;
}
}
if (designator != null)
{
result = new SecondaryAddressSyntaxNode(designator, state.TakeBuffer(), rangeUnitIdentifier);
return(true);
}
}
state = snapshot;
return(false);
}
public static bool TryParseSecondaryAddress(string input, out SecondaryAddressSyntaxNode result)
{
var tokens = Tokenizer.Tokenize(input).Reverse().ToImmutableArray();
var state = new ParserState(tokens);
var success = TryParseSecondaryAddress(ref state, out var syntax) && state.Current.IsNone;
result = success ? syntax : null;
return(success);
}
