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Make parser allow a slot list at top level #14

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sin-ack opened this issue Aug 12, 2022 · 0 comments
Open

Make parser allow a slot list at top level #14

sin-ack opened this issue Aug 12, 2022 · 0 comments

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@sin-ack
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sin-ack commented Aug 12, 2022 •
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Currently we only allow slot lists in objects. This prevents the following from being valid code:

| foo. bar |
foo: 123.
bar: 456.
foo * bar; asString printLine.

There is no reason for the top-level context to not be a method object (in fact, the runtime already wraps the top-level context in a method object before activating it!). Therefore it makes equal sense to have the parser allow a slot list to be valid there.
sin-ack added a commit that referenced this issue Mar 21, 2024
@sin-ack
language: Rewrite parser based on an EBNF grammar
777086a 
This accomplishes several things:

- Improve parser soundness by having a provable grammar.
- Fix some of the ickier parts of the parser and make things more
  "regular".
- Prepare for some performance-related changes. Namely, method and block
  objects may no longer have parent slots.
- Prepare for some QoL features like #14.

No impact expected on performance.

As a bonus, I've added the BNF grammar I used as a basis for the new
parser to the repository.
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