Commit graph

9 commits

Author SHA1 Message Date
Vincent Ambo
af793325c0 feat(tazjin/rlox): Scan identifiers and keywords
Change-Id: Ifec627605c23c25f199d47eaa91e441ed9590208
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2192
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-28 16:55:25 +00:00
Vincent Ambo
97505eb1e1 feat(tazjin/rlox): Implement number scanning
Change-Id: Ide0126d1c2274d56903092816ff9cd531c03f513
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2191
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-28 16:55:25 +00:00
Vincent Ambo
47aa92b87d feat(tazjin/rlox): Implement string scanning
Note that Lox does not support escapes, and I don't care about that.

Change-Id: Ie848cbc1164c4b005b15e29aad8fe723aaa68d1b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2190
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-28 16:33:32 +00:00
Vincent Ambo
4277d3e6b4 feat(tazjin/rlox): Handle whitespace in scanner
Change-Id: Iead3efa6aa797af5c5b57c67226205bf7e39e647
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2188
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-28 16:33:32 +00:00
Vincent Ambo
9f61579dde feat(tazjin/rlox): Scan single-line comments
Change-Id: I2efafdb1374ac2863a1f8d8a9310123a7dec0900
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2187
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-28 16:33:32 +00:00
Vincent Ambo
46c6906aaa chore(tazjin/rlox): Wire scanner to interpreter to reduce warnings
... they're just noisy at the moment. This isn't complete because it
doesn't thread through scanner errors.

Change-Id: I0f75d2b20fa3f57be1af5d1d8aa8059856855825
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2162
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-27 17:29:04 +00:00
Vincent Ambo
3f6b88bce2 feat(tazjin/rlox): Implement multi-character scanning
Change-Id: Ic5a246a7f5834477aeb97824fa30ba74a8422bc1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2161
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-27 17:29:04 +00:00
Vincent Ambo
6363efbebf refactor(tazjin/rlox): Use &[char] instead of &str in scanner
This makes it easier to work with the Unicode issue. The original
string representation can be discarded.

Change-Id: I740be4cb9654679ea7950f3899c5c709b1e7a739
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2160
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-27 17:29:04 +00:00
Vincent Ambo
3d1b116f7f feat(tazjin/rlox): Implement single-character scanning
... still not that interesting, but at this point slightly divergent
from the book:

The book embraces mutability for interpreter state, initially for
tracking whether an error condition has occured.

I avoid this by instead defining an error type and collecting the
error values, to be handled later on.

Notes: So far nothing special, but this is just the beginning of the
book. I like the style it is written in and it has pointed to some
interesting resources, such as a 1965 paper titled "The Next 700
Languages".

Change-Id: I030b38438fec9eb55372bf547af225138908230a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2144
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2020-11-23 01:15:57 +00:00