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(;module:
lux
(lux (control monad)
(data [text "T/" Eq<Text>]
text/format
["E" error])
[macro #+ Monad<Lux>]
(type ["TC" check])))
(type: #export Path Text)
(type: #export Mode
#Build
#Eval
#REPL)
(def: #export (fail message)
(All [a] (-> Text (Lux a)))
(do Monad<Lux>
[[file line col] macro;cursor
#let [location (format file
"," (|> line nat-to-int %i)
"," (|> col nat-to-int %i))]]
(macro;fail (format "@ " location
"\n" message))))
(def: #export (with-expected-type expected action)
(All [a] (-> Type (Lux a) (Lux a)))
(function [compiler]
(case (action (set@ #;expected (#;Some expected) compiler))
(#E;Success [compiler' output])
(let [old-expected (get@ #;expected compiler)]
(#E;Success [(set@ #;expected old-expected compiler')
output]))
(#E;Error error)
(#E;Error error))))
(def: #export (within-type-env action)
(All [a] (-> (TC;Check a) (Lux a)))
(function [compiler]
(case (action (get@ #;type-context compiler))
(#E;Error error)
(#E;Error error)
(#E;Success [context' output])
(#E;Success [(set@ #;type-context context' compiler)
output]))))
(def: #export (pl::put key val table)
(All [a] (-> Text a (List [Text a]) (List [Text a])))
(case table
#;Nil
(list [key val])
(#;Cons [k' v'] table')
(if (T/= key k')
(#;Cons [key val]
table')
(#;Cons [k' v']
(pl::put key val table')))))
(def: #export (pl::get key table)
(All [a] (-> Text (List [Text a]) (Maybe a)))
(case table
#;Nil
#;None
(#;Cons [k' v'] table')
(if (T/= key k')
(#;Some v')
(pl::get key table'))))
(def: #export (with-source-code source action)
(All [a] (-> [Cursor Text] (Lux a) (Lux a)))
(function [compiler]
(let [old-source (get@ #;source compiler)]
(case (action (set@ #;source source compiler))
(#E;Error error)
(#E;Error error)
(#E;Success [compiler' output])
(#E;Success [(set@ #;source old-source compiler')
output])))))
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