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(;module:
lux
(lux (control monad)
(data ["E" error]
[text "T/" Eq<Text>]
text/format
[number]
[product])
[macro #+ Monad<Lux>]
[type]
(type ["TC" check]))
(luxc ["&" base]
(lang ["la" analysis])
["&;" module]
["&;" env])
(. ["&&;" common]
["&&;" function]
["&&;" primitive]
["&&;" reference]
["&&;" type]
["&&;" struct]
["&&;" proc]))
(def: #export (analyser eval)
(-> &;Eval &;Analyser)
(: (-> Code (Lux la;Analysis))
(function analyse [ast]
(case ast
(^template [<tag> <analyser>]
[cursor (<tag> value)]
(<analyser> value))
([#;Bool &&primitive;analyse-bool]
[#;Nat &&primitive;analyse-nat]
[#;Int &&primitive;analyse-int]
[#;Deg &&primitive;analyse-deg]
[#;Real &&primitive;analyse-real]
[#;Char &&primitive;analyse-char]
[#;Text &&primitive;analyse-text])
(^ [cursor (#;Tuple (list))])
&&primitive;analyse-unit
(^ [cursor (#;Tuple (list singleton))])
(analyse singleton)
(^ [cursor (#;Tuple elems)])
(&&struct;analyse-tuple analyse elems)
[cursor (#;Symbol reference)]
(&&reference;analyse-reference reference)
(^ [cursor (#;Form (list [_ (#;Symbol ["" "_lux_check"])]
type
value))])
(&&type;analyse-check analyse eval type value)
(^ [cursor (#;Form (list [_ (#;Symbol ["" "_lux_coerce"])]
type
value))])
(&&type;analyse-coerce analyse eval type value)
(^ [cursor (#;Form (list [_ (#;Symbol ["" "_lux_proc"])]
[_ (#;Symbol proc)]
[_ (#;Tuple args)]))])
(&&proc;analyse-proc analyse proc args)
(^ [cursor (#;Form (list [_ (#;Nat tag)]
value))])
(&&struct;analyse-variant analyse tag value)
(^ [cursor (#;Form (list& func args))])
(do Monad<Lux>
[[funcT =func] (&&common;with-unknown-type
(analyse func))]
(case =func
(#la;Absolute def-name)
(do @
[[def-type def-anns def-value] (macro;find-def def-name)]
(if (macro;macro? def-anns)
(do @
[## macro-expansion (function [compiler]
## (case (macro-caller def-value args compiler)
## (#E;Success [compiler' output])
## (#E;Success [compiler' output])
## (#E;Error error)
## ((&;fail error) compiler)))
macro-expansion (: (Lux (List Code))
(undefined))]
(case macro-expansion
(^ (list single-expansion))
(analyse single-expansion)
_
(&;fail (format "Macro expressions must expand to a single expression: " (%code ast)))))
(&&function;analyse-apply analyse funcT =func args)))
_
(&&function;analyse-apply analyse funcT =func args)))
_
(&;fail (format "Unrecognized syntax: " (%code ast)))
))))
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