1	# bolt: a linter, checker and language server for Bend 2.
2	#
3	# The one binary. Shake parses the line: `lint`, or a word that is no
4	# subcommand, or nothing, lints the files named after it (every `.bend` file
5	# under the current directory when none are); `check` runs the checker on
6	# them; `lsp` serves an editor over stdio; `help` (or `--help`) prints usage; `--version`
7	# prints the release and the short commit when the build has one. Build it
8	# native (`bend main.bend -o bin/bolt.bin`). `bolt lsp` runs on the cores:
9	# with no runtime `--gpu` it is `+RTS --gpu off -RTS lsp`, and
10	# `+RTS --gpu on -RTS` or `+RTS --gpu 4GB -RTS` asks for the device. Runtime
11	# options go between `+RTS` and `-RTS` (bend 2.0.38); bolt declares no
12	# `--gpu` of its own, so `bolt --gpu off` is an unknown option. What the line
13	# does is Args.out's decision (src/LAWS.bend proves it); this file only does
14	# it, and LAWS.bend states what src/stop.bend's say and leave do.
15	# Everything under src/ is internal.
16	import Base
17	import ./src/args.bend as Args
18	import ./src/lint.bend as Lint
19	import ./src/check.bend as Check
20	import ./src/lsp/run.bend as Lsp
21	import ./src/lsp/checker/bend.bend as BendChecker
22	import ./src/stop.bend as Stop
23	
24	# what a subcommand runs, over the files after it
25	def dispatch(cmd: Args.Cmd, paths: List<&2, String>) -> IO(Unit):  # noqa: L001 IO driver
26	  match cmd:
27	    case Args.CLint{}:
28	      Lint.run(paths)
29	    case Args.CCheck{}:
30	      Check.run(~BendChecker.service(), paths)
31	    case Args.CLsp{}:
32	      Lsp.run()
33	
34	# what a parsed line does, done
35	def perform(oo: Args.Out) -> IO(Unit):  # noqa: L001 IO driver
36	  match oo:
37	    case Args.Stop{to, text, code}:
38	      do IO<Unit>:
39	        Stop.say(to, text)
40	        Stop.leave(code)
41	    case Args.Go{cmd, paths}:
42	      dispatch(cmd, paths)
43	
44	def main() -> IO(Unit):  # noqa: L001 IO entry point
45	  do IO<Unit>:
46	    +av : List<&2, String> <- Args.argv()
47	    perform(Args.out(Args.parse(Args.line(av))))