# New Ticket Created by Tobias Leich # Please include the string: [perl #123741] # in the subject line of all future correspondence about this issue. # <URL: https://rt.perl.org/Ticket/Display.html?id=123741 >
FROGGS: m: say (2/6).WHAT; say (2/6).perl.EVAL.WHAT # rakudobug camelia: rakudo-moar 613c0b: OUTPUT«(Rat)(Str)» jnthn: timotimo: Thing is, I think it's meant to be a RatStr, not just a Rat? timotimo: no timotimo: Any such literal, when written without spaces, produces a pure numeric value without a stringy allomorphism. Put spaces to override that: timotimo: <1/2> # a Rat timotimo: < 1/2 > # a RatStr timotimo: http://design.perl6.org/S02.html#Allomorphic_value_semantics jnthn: Oh... timotimo: i have a failure in "weird-errors" and "start.t", but otherwise 5 todos passed timotimo: i'll just push it to a branch, because i'll have to AFK again jnthn: The "any such literal" suggests that it extends to all Numeric forms? jnthn: If so, can we (in the Action method for a <...> quote), do: jnthn: if [it's just a single value not a list] { timotimo: as in "doesn't have a space in it at all"? that sounds like something nibblish timotimo: but yeah, there ought to be a branch for complex numbers there, too jnthn: try { ...call .Numeric on the string, if we are successful then add result as a constant and update the QAST we'll produce } jnthn: } jnthn: m: say "1/2".Numeric.WHAT camelia: rakudo-moar 613c0b: OUTPUT«(Rat)» jnthn: m: say " 1/2".Numeric.WHAT camelia: rakudo-moar 613c0b: OUTPUT«(Rat)» jnthn: Ah jnthn: Darn, that is soft on whitespace... timotimo: that'd be "doesn't have spaces" jnthn: Yeah, but maybe we can check if the string contains whitespace as part of the initial "if" timotimo: also not sure how <1 / 5> is supposed to work jnthn: I'm quite sure we don't want the .Numeric logic implemented in two places. jnthn: So I'm reluctant to go special-casing it in the grammar. Kristien: special cases break generic code jnthn: Right. jnthn: Do it with .Numeric and we get the complex and so on for free also. dalek: rakudo/angular_bracket_literal_semantics: b49d943 | timotimo++ | src/Perl6/ (2 files): dalek: rakudo/angular_bracket_literal_semantics: this is how <1/5> could produce a Rat directly. dalek: rakudo/angular_bracket_literal_semantics: review: https://github.com/rakudo/rakudo/commit/b49d943917 timotimo: that's fair. timotimo: i could have just not pushed this branch then :) jnthn: otoh, you could have your grammar rule call <numeric> jnthn: '<' ~ <numeric> ~ '>' timotimo: you mean '<' ~ '>' <numeric> :) jnthn: And that probably also re-uses some logic. jnthn: uh, yes jnthn: But jnthn: wait, don't use ~ jnthn: 'cus we don't want to explode jnthn: We just want to parse it as a normal quote in that case timotimo: it already uses ~ around the alteration jnthn: Ah
