WIP: Preliminary support for q, qq, qw, qx, qr - Githubissues

xsawyerx / guacamole

Guacamole is a parser toolkit for Standard Perl. It provides fully static BNF-based parsing capability to a reasonable subset of Perl.

https://metacpan.org/pod/Guacamole

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WIP: Preliminary support for q, qq, qw, qx, qr #26

Closed xsawyerx closed 4 years ago

xsawyerx commented 4 years ago

[This includes the commits from #25 and needs to be rebased before it's merged.]

This supports the following:

q(), q{}, q<>, q//, q!!
qq(), qq{}, qq<>, qq//, qq!!
qw(), qw{}, qw<>, qw//, qw!!
qx(), qx{}, qx<>, qx//, qx!!
qr(), qr{}, qr<>, qr//, qr!!

Issues to fix:

[x] Ambiguity of: q(), qq(), qw(), qx(), qr()
[x] Support delimiter escaping.

More comments:

We do not support nested delimiters. q( () ) should and will fail.
qw() disregards spaces between elements. I would love to resolve it in the future.
qr() has regex modifiers. Those aren't supported here at all.

xsawyerx commented 4 years ago

All the q-like functions do not support a space after the delimiter anymore. Done.

The problem now is that it finds q () (with a space) as a function named q. (Same with all q-like functions that use a space and parenthesis: qq (), qr (), qx ().)