Comments (1)
Hi - apologies for a bit of a rushed response; first, to avoid returning empty when the parser doesn't consume the full input, use AtEnd()
:
var doc = Doc.AtEnd().Parse(tokens);
ManyDelimitedBy()
isn't ideal for this and probably needs some tweaking; I got your grammar working by consuming trailing newlines in If()
:
private static readonly TokenListParser<TokenKind, string> If =
from _ in Token.EqualTo(TokenKind.If)
from id in Identifier
from nl1 in OptionalNewLines
from lbracket in Token.EqualTo(TokenKind.LBracket)
from nl2 in OptionalNewLines
from lines in Identifier.Try().ManyDelimitedBy(NewLine.AtLeastOnce())
from nl3 in OptionalNewLines
from rbracket in Token.EqualTo(TokenKind.RBracket)
from trailing in OptionalNewLines // <------------------------- Added
select "(" + id + "): { " + String.Join(", ", lines) + " }";
And using Many()
instead:
private static readonly TokenListParser<TokenKind, string> Doc =
from nl1 in OptionalNewLines
from ifs in If.Many()
select String.Join(" | ", ifs);
Not sure this gets it all the way there, but HTH!
from superpower.
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from superpower.