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(.module:
[lux #*
[control
monad
["ex" exception (#+ exception:)]]
["." macro]
[data
["." text ("#/." equivalence)
format]]]
["." // (#+ Analysis Operation)
["." scope]
["." type]
["/." //
["." extension]
[//
["." reference]]]])
(exception: #export (foreign-module-has-not-been-imported {current Text} {foreign Text})
(ex.report ["Current" current]
["Foreign" foreign]))
(exception: #export (definition-has-not-been-expored {definition Name})
(ex.report ["Definition" (%name definition)]))
## [Analysers]
(def: (definition def-name)
(-> Name (Operation Analysis))
(with-expansions [<return> (wrap (|> def-name reference.constant #//.Reference))]
(do ///.monad
[[actualT def-anns _] (extension.lift (macro.find-def def-name))]
(case (macro.get-identifier-ann (name-of #.alias) def-anns)
(#.Some real-def-name)
(definition real-def-name)
_
(do @
[_ (type.infer actualT)
(^@ def-name [::module ::name]) (extension.lift (macro.normalize def-name))
current (extension.lift macro.current-module-name)]
(if (text/= current ::module)
<return>
(if (macro.export? def-anns)
(do @
[imported! (extension.lift (macro.imported-by? ::module current))]
(if imported!
<return>
(///.throw foreign-module-has-not-been-imported [current ::module])))
(///.throw definition-has-not-been-expored def-name))))))))
(def: (variable var-name)
(-> Text (Operation (Maybe Analysis)))
(do ///.monad
[?var (scope.find var-name)]
(case ?var
(#.Some [actualT ref])
(do @
[_ (type.infer actualT)]
(wrap (#.Some (|> ref reference.variable #//.Reference))))
#.None
(wrap #.None))))
(def: #export (reference reference)
(-> Name (Operation Analysis))
(case reference
["" simple-name]
(do ///.monad
[?var (variable simple-name)]
(case ?var
(#.Some varA)
(wrap varA)
#.None
(do @
[this-module (extension.lift macro.current-module-name)]
(definition [this-module simple-name]))))
_
(definition reference)))
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