Commit Graph

16 Commits

Author SHA1 Message Date
Oleksii Dorozhkin
8677492d56
Add --fmt subcommand (#837) 2021-06-08 01:01:27 -07:00
Casey Rodarmor
fec979c2c6
Reform and improve string literals (#793)
- Combine and simplify string and backtick lexing.
- Allow newlines in strings and backticks.
- Add triple-delimited indented strings and backticks. Common indented literal non-blank line leading whitespace is stripped.
- If a literal newline is escaped, it will be suppressed.
- Backticks starting with `#!` are reserved for a future upgrade.
2021-04-05 21:28:37 -07:00
Casey Rodarmor
19f7ad09a7
Add conditional expressions (#714)
Add conditional expressions of the form:

   foo := if lhs == rhs { then } else { otherwise }

`lhs`, `rhs`, `then`, and `otherwise` are all arbitrary expressions, and
can recursively include other conditionals. Conditionals short-circuit,
so the branch not taken isn't evaluated.

It is also possible to test for inequality with `==`.
2020-10-26 18:16:42 -07:00
Casey Rodarmor
9731278d2a
Wrap comments at 80 characters (#593)
I think 70 is too agressive, especially since it includes indentation
when determining line length.
2020-02-14 04:49:25 -08:00
Casey Rodarmor
3ec7dea4a3
Use unstable rustfmt configuration options (#592) 2020-02-10 20:07:06 -08:00
Casey Rodarmor
d2decbfdb8
Resolve functions (#550)
Modifies parsing to return strongly-typed `Thunk`s, which contain both
the function implementation, as well as the correct number of arguments.

This moves unknown function and function argument count mismatch errors
to parse time.
2019-11-21 12:14:10 -06:00
Casey Rodarmor
30c77f8d03
Resolve recipe dependencies (#547)
Make analysis resolve recipe dependencies from names (`Name`) to recipes
(`Rc<Recipe>`), to give type-level certainty that resolution was performed
correctly and remove the need to look up dependencies on run.
2019-11-21 08:23:32 -06:00
Casey Rodarmor
b2285ce0e0
Reform Parser (#509)
Just's first parser performed both parsing, i.e the transformation of a
token stream according to the language grammar, and a number of consistency
checks and analysis passes.

This made parsing and analysis quite complex, so this diff introduces a
new, much cleaner `Parser`, and moves existing analysis into a dedicated
`Analyzer`.
2019-11-07 10:55:15 -08:00
Casey Rodarmor
1cb90f4e65
Use pub(crate) instead of pub (#471)
Eventually, there will probably be a `crate` visibility specifier that
does the same thing as `pub(crate)`. This commit replaces `pub` with
`pub(crate)`, so when `crate` is available we can easily switch to it.
2019-09-21 15:35:03 -07:00
Casey Rodarmor
596ea34460
Replace regex-based lexer with character-at-a-time lexer (#406) 2019-04-15 22:40:02 -07:00
Casey Rodarmor
fe0a6c252c
Allow arbitrary expressions as default arguments (#400) 2019-04-11 23:58:08 -07:00
Casey Rodarmor
3a287b864a
Housekeeping (#394)
- Upgrade to rust 2018
- Update dependencies
- Use BTree{Map,Set} instead of Map and Set
2019-04-11 15:23:14 -07:00
Casey Rodarmor
3d67786aaf
Förmatterdämmerung (#346)
Format with rustfmt
2018-12-08 14:29:41 -08:00
Casey Rodarmor
79c0994387
Add env_var(key) and env_var_or_default(key, default) functions (#280)
`env_var(key)` looks up the value of the environment variable with name `key`, aborting execution if it is not found.

`env_var_or_default(key, default)` looks up the value of the environment variable with name `key`, returning `default` if it is not found.
2017-12-02 23:59:07 +01:00
Casey Rodarmor
afa4aebd4a
Add functions (#277)
– Parse unary (no-argument) functions
– Add functions for detecting the current os, arch, and os family, according to rustc's cfg attributes
2017-12-02 14:37:10 +01:00
Casey Rodarmor
2b6b715528
Refactor Everything (#250) 2017-11-16 23:30:08 -08:00