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(.module:
lux
(lux (control [monad #+ do]
["ex" exception #+ exception:])
(data [text]
text/format
(coll [list "list/" Functor<List>]
[dict #+ Dict]))
[macro]
(lang (type ["tc" check]))
[io #+ IO])
[//]
(luxc [lang]
(lang [".L" host]
(host ["$" jvm])
(analysis [".A" common]
[".A" expression])
(synthesis [".S" expression])
(translation [".T" expression]
[".T" statement]
[".T" eval])
[".L" eval])))
(exception: #export Invalid-Statement)
(exception: #export Invalid-Alias)
(def: (throw-invalid-statement procedure inputsC+)
(All [a] (-> Text (List Code) (Meta a)))
(lang.throw Invalid-Statement
(format "Statement: " procedure "\n"
" Inputs:"
(|> inputsC+
list.enumerate
(list/map (function [[idx inputC]]
(format "\n " (%n idx) " " (%code inputC))))
(text.join-with "")) "\n")))
(def: (process-annotations annsC)
(-> Code (Meta [$.Inst Code]))
(do macro.Monad<Meta>
[[_ annsA] (lang.with-scope
(lang.with-type Code
(expressionA.analyser evalL.eval annsC)))
annsI (expressionT.translate (expressionS.synthesize annsA))
annsV (evalT.eval annsI)]
(wrap [annsI (:! Code annsV)])))
(def: (ensure-valid-alias def-name annotations value)
(-> Text Code Code (Meta Unit))
(case [annotations value]
(^multi [[_ (#.Record pairs)] [_ (#.Symbol _)]]
(|> pairs list.size (n/= +1)))
(:: macro.Monad<Meta> wrap [])
_
(lang.throw Invalid-Alias def-name)))
(def: (lux//def procedure)
(-> Text //.Statement)
(function [inputsC+]
(case inputsC+
(^ (list [_ (#.Symbol ["" def-name])] valueC annotationsC))
(hostL.with-context def-name
(lang.with-fresh-type-env
(do macro.Monad<Meta>
[[annotationsI annotationsV] (process-annotations annotationsC)]
(case (macro.get-symbol-ann (ident-for #.alias) annotationsV)
(#.Some real-def)
(do @
[_ (ensure-valid-alias def-name annotationsV valueC)
_ (lang.with-scope
(statementT.translate-def def-name Void id annotationsI annotationsV))]
(wrap []))
#.None
(do @
[[_ valueT valueA] (lang.with-scope
(if (macro.type? (:! Code annotationsV))
(do @
[valueA (lang.with-type Type
(expressionA.analyser evalL.eval valueC))]
(wrap [Type valueA]))
(commonA.with-unknown-type
(expressionA.analyser evalL.eval valueC))))
valueT (lang.with-type-env
(tc.clean valueT))
valueI (expressionT.translate (expressionS.synthesize valueA))
_ (lang.with-scope
(statementT.translate-def def-name valueT valueI annotationsI annotationsV))]
(wrap []))))))
_
(throw-invalid-statement procedure inputsC+))))
(def: (lux//program procedure)
(-> Text //.Statement)
(function [inputsC+]
(case inputsC+
(^ (list [_ (#.Symbol ["" args])] programC))
(do macro.Monad<Meta>
[[_ programA] (lang.with-scope
(lang.with-type (type (IO Unit))
(expressionA.analyser evalL.eval programC)))
programI (expressionT.translate (expressionS.synthesize programA))
_ (statementT.translate-program args programI)]
(wrap []))
_
(throw-invalid-statement procedure inputsC+))))
(do-template [<mame> <type> <installer>]
[(def: (<mame> procedure)
(-> Text //.Statement)
(function [inputsC+]
(case inputsC+
(^ (list [_ (#.Text name)] valueC))
(do macro.Monad<Meta>
[[_ valueA] (lang.with-scope
(lang.with-type <type>
(expressionA.analyser evalL.eval valueC)))
valueI (expressionT.translate (expressionS.synthesize valueA))
valueV (evalT.eval valueI)
_ (<installer> name (:! <type> valueV))]
(wrap []))
_
(throw-invalid-statement procedure inputsC+))))]
[lux//analysis //.Expression //.install-analysis]
[lux//synthesis //.Expression //.install-synthesis]
[lux//translation //.Expression //.install-translation]
[lux//statement //.Statement //.install-statement])
(def: #export defaults
(Dict Text //.Statement)
(`` (|> (dict.new text.Hash<Text>)
(~~ (do-template [<name> <extension>]
[(dict.put <name> (<extension> <name>))]
["lux def" lux//def]
["lux program" lux//program]
["lux analysis" lux//analysis]
["lux synthesis" lux//synthesis]
["lux translation" lux//translation]
["lux statement" lux//statement]
)))))
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