40de02ec6f
Some notes: - This approach is not perfect, but it's rather simple and I can't think of an edge case. - I did not use the `words` function to create the regex matching the keywords list, because it returns a capturing group (`()`) and it needs to be non-capturing here (because of `bygroups` usage). - I chose to go to the 'soft-keywords-inner' state after both `match` and `case`, even though it's unnecessary for `match` (the inner state catches the `_` wildcard keyword which appears only after a `case`). This is mostly harmless and saves us from writing the 'soft-keywords' regex twice each for `match` and `case` with the extra inner state just for `case`. The only piece of code this will lex incorrectly is `match _:` (`_` will be lexed as keyword). I doubt though that pattern mathcing will be used like this.
23 lines
433 B
Text
23 lines
433 B
Text
match command.split():
|
|
case ['to', direction] if direction in destination.route:
|
|
return 1
|
|
case 'foo' | 'bar':
|
|
return 2
|
|
case 'raz' as name:
|
|
return 3
|
|
case ['to', _]:
|
|
return 4
|
|
case else_bar:
|
|
return 5
|
|
case _:
|
|
return 6
|
|
|
|
match command.split():
|
|
case _Direction():
|
|
return 1
|
|
case _ as default:
|
|
return 2
|
|
|
|
case = 1
|
|
match = 1
|
|
match if True else bar
|