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);
}
private static bool TryParsePostOfficeBoxKeywords(ref ParserState state, out ImmutableArray <Token> result)
{
result = default;
var snapshot = state;
state.ConsumeWhiteSpace();
if (state.TryConsume("office"))
{
state.ConsumeWhiteSpace();
if (state.TryConsume("post"))
{
result = state.TakeBuffer();
}
return(true);
}
else
{
state.TryConsume(t => t.IsCommaOrPeriod);
state.ConsumeWhiteSpace();
if (state.TryConsume("po"))
{
result = state.TakeBuffer();
return(true);
}
else if (state.TryConsume("o"))
{
state.ConsumeWhiteSpace();
state.TryConsume(t => t.IsCommaOrPeriod);
state.ConsumeWhiteSpace();
if (state.TryConsume("p"))
{
result = state.TakeBuffer();
return(true);
}
}
}
state = snapshot;
return(false);
}
private static bool TryParseStreetSuffix(ref ParserState state, out StreetSuffixSyntaxNode result)
{
result = default;
var snapshot = state;
state.ConsumeWhiteSpace();
state.TryConsume(t => t.IsCommaOrPeriod);
foreach (var(common, expanded, abbreviated) in PostalDesignators.StreetSuffixes)
{
// The check against a current numeric token prevents us from errantly picking
// up things like the "RD" in "3RD".
if (state.TryConsume(t => t.Matches(common)) && !state.Current.IsNumeric)
{
result = new StreetSuffixSyntaxNode(abbreviated, state.TakeBuffer());
return(true);
}
}
state = snapshot;
return(false);
}
private static bool TryParsePostOfficeBox(ref ParserState state, out PostOfficeBoxSyntaxNode result)
{
result = null;
var snapshot = state;
if (TryParseRange(ref state, out var boxNumber))
{
state.ConsumeWhiteSpace();
if (state.TryConsume(t => t.IsOctothorpe))
{
state.ConsumeWhiteSpace();
}
if (state.TryConsume("caller"))
{
state.ConsumeWhiteSpace();
state.TryConsume("firm");
}
else if (state.TryConsume(t => t.Matches("box") || t.Matches("drawer") || t.Matches("bin") || t.Matches("drawer") || t.Matches("lockbox")))
{
// no-op
}
else
{
goto Failure;
}
var boxKeywordTokens = state.TakeBuffer();
if (TryParsePostOfficeBoxKeywords(ref state, out var additionalTokens))
{
boxKeywordTokens = additionalTokens.AddRange(boxKeywordTokens);
}
result = new PostOfficeBoxSyntaxNode(boxKeywordTokens, boxNumber);
return(true);
}
Failure:
state = snapshot;
return(false);
}
private static bool TryParseRange(ref ParserState state, out RangeSyntaxNode result)
{
result = null;
var snapshot = state;
state.ConsumeWhiteSpace();
var fraction = Token.None;
if (state.TryConsume(t => t.Kind == TokenKind.Fraction))
{
fraction = state.Buffer.Last();
state.ConsumeWhiteSpace();
}
if (state.TryConsume(t => t.IsRangeComponent))
{
var tokens = state.TakeBuffer();
result = new RangeSyntaxNode(
tokens.Take(1).ToImmutableArray(),
fraction,
tokens);
TryParseRangeAppend(ref state, ref result);
if (result != null)
{
state.TakeBuffer();
return(true);
}
}
state = snapshot;
return(false);
}
private static bool TryParseHighwayContractRouteBox(ref ParserState state, out HighwayContractRouteBoxSyntaxNode result)
{
result = null;
var snapshot = state;
RangeSyntaxNode routeNumber;
ImmutableArray <Token> boxKeywordTokens;
if (TryParseRange(ref state, out var boxNumber))
{
state.ConsumeWhiteSpace();
if (state.TryConsume(t => t.IsOctothorpe))
{
state.ConsumeWhiteSpace();
}
if (state.TryConsume("box"))
{
state.ConsumeWhiteSpace();
if (state.TryConsume(t => t.IsCommaOrPeriod))
{
state.ConsumeWhiteSpace();
}
boxKeywordTokens = state.TakeBuffer();
if (TryParseRange(ref state, out routeNumber))
{
state.ConsumeWhiteSpace();
if (state.TryConsume(t => t.IsOctothorpe))
{
state.ConsumeWhiteSpace();
}
if (state.TryConsume(t => t.IsCommaOrPeriod))
{
state.ConsumeWhiteSpace();
}
if (state.TryConsume("hc"))
{
goto Parsed;
}
if (state.TryConsume("c"))
{
state.ConsumeWhiteSpace();
if (state.TryConsume(t => t.IsCommaOrPeriod))
{
state.ConsumeWhiteSpace();
}
if (state.TryConsume("h"))
{
goto Parsed;
}
}
else if (state.TryConsume(t => t.Matches("route") || t.Matches("rt")))
{
state.ConsumeWhiteSpace();
if (state.TryConsume("contract"))
{
state.ConsumeWhiteSpace();
if (state.TryConsume("highway"))
{
goto Parsed;
}
}
else if (state.TryConsume("star"))
{
goto Parsed;
}
}
else if (state.TryConsume("contract"))
{
state.ConsumeWhiteSpace();
if (state.TryConsume("highway"))
{
goto Parsed;
}
}
}
}
}
state = snapshot;
return(false);
Parsed:
result = new HighwayContractRouteBoxSyntaxNode(
state.TakeBuffer(),
routeNumber,
boxKeywordTokens,
boxNumber);
return(true);
}
private static bool TryParseDirectional(ref ParserState state, out DirectionalSyntaxNode result)
{
result = default;
var snapshot = state;
state.ConsumeWhiteSpace();
if (state.TryConsume("northeast"))
{
result = new DirectionalSyntaxNode("NE", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("northwest"))
{
result = new DirectionalSyntaxNode("NW", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("southeast"))
{
result = new DirectionalSyntaxNode("SE", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("southwest"))
{
result = new DirectionalSyntaxNode("SW", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("north"))
{
result = new DirectionalSyntaxNode("N", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("south"))
{
result = new DirectionalSyntaxNode("S", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("east"))
{
result = new DirectionalSyntaxNode("E", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("west"))
{
result = new DirectionalSyntaxNode("W", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("ne"))
{
result = new DirectionalSyntaxNode("NE", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("nw"))
{
result = new DirectionalSyntaxNode("NW", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("se"))
{
result = new DirectionalSyntaxNode("SE", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("sw"))
{
result = new DirectionalSyntaxNode("SW", state.TakeBuffer());
return(true);
}
else
{
state.TryConsume(t => t.IsCommaOrPeriod);
if (state.TryConsume("e"))
{
//parser.ConsumeWhiteSpace();
if (state.TryConsume(t => t.IsCommaOrPeriod))
{
//parser.ConsumeWhiteSpace();
}
if (state.TryConsume("n"))
{
result = new DirectionalSyntaxNode("NE", state.TakeBuffer());
}
else if (state.TryConsume("s"))
{
result = new DirectionalSyntaxNode("SE", state.TakeBuffer());
}
else
{
result = new DirectionalSyntaxNode("E", state.TakeBuffer());
}
return(true);
}
else if (state.TryConsume("w"))
{
//parser.ConsumeWhiteSpace();
if (state.TryConsume(t => t.IsCommaOrPeriod))
{
//parser.ConsumeWhiteSpace();
}
if (state.TryConsume("n"))
{
result = new DirectionalSyntaxNode("NW", state.TakeBuffer());
}
else if (state.TryConsume("s"))
{
result = new DirectionalSyntaxNode("SW", state.TakeBuffer());
}
else
{
result = new DirectionalSyntaxNode("W", state.TakeBuffer());
}
return(true);
}
else if (state.TryConsume("s"))
{
result = new DirectionalSyntaxNode("S", state.TakeBuffer());
return(true);
}
else if (state.TryConsume("n"))
{
result = new DirectionalSyntaxNode("N", state.TakeBuffer());
return(true);
}
}
state = snapshot;
return(false);
}