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|
(.module:
lux
(lux (control [monad #+ do]
["ex" exception #+ exception:]
pipe)
(data [text "text/" Eq<Text>]
text/format
["e" error]
(coll [list "list/" Fold<List> Functor<List>]))
[macro]
(macro [code]))
(luxc ["&" lang]
(lang ["&." scope])))
(exception: #export Unknown-Module)
(exception: #export Cannot-Declare-Tag-Twice)
(exception: #export Cannot-Declare-Tags-For-Unnamed-Type)
(exception: #export Cannot-Declare-Tags-For-Foreign-Type)
(exception: #export Cannot-Define-More-Than-Once)
(exception: #export Cannot-Define-In-Unknown-Module)
(exception: #export Can-Only-Change-State-Of-Active-Module)
(exception: #export Cannot-Set-Module-Annotations-More-Than-Once)
(def: (new-module hash)
(-> Nat Module)
{#.module-hash hash
#.module-aliases (list)
#.defs (list)
#.imports (list)
#.tags (list)
#.types (list)
#.module-annotations #.None
#.module-state #.Active})
(def: #export (set-annotations annotations)
(-> Code (Meta Unit))
(do macro.Monad<Meta>
[self-name macro.current-module-name
self macro.current-module]
(case (get@ #.module-annotations self)
#.None
(function [compiler]
(#e.Success [(update@ #.modules
(&.pl-put self-name (set@ #.module-annotations (#.Some annotations) self))
compiler)
[]]))
(#.Some old)
(macro.fail (Cannot-Set-Module-Annotations-More-Than-Once
(format " Module: " self-name "\n"
"Old annotations: " (%code old) "\n"
"New annotations: " (%code annotations) "\n"))))))
(def: #export (import module)
(-> Text (Meta Unit))
(do macro.Monad<Meta>
[self macro.current-module-name]
(function [compiler]
(#e.Success [(update@ #.modules
(&.pl-update self (update@ #.imports (|>> (#.Cons module))))
compiler)
[]]))))
(def: #export (alias alias module)
(-> Text Text (Meta Unit))
(do macro.Monad<Meta>
[self macro.current-module-name]
(function [compiler]
(#e.Success [(update@ #.modules
(&.pl-update self (update@ #.module-aliases (: (-> (List [Text Text]) (List [Text Text]))
(|>> (#.Cons [alias module])))))
compiler)
[]]))))
(def: #export (exists? module)
(-> Text (Meta Bool))
(function [compiler]
(|> (get@ #.modules compiler)
(&.pl-get module)
(case> (#.Some _) true #.None false)
[compiler] #e.Success)))
(def: #export (define (^@ full-name [module-name def-name])
definition)
(-> Ident Def (Meta Unit))
(function [compiler]
(case (&.pl-get module-name (get@ #.modules compiler))
(#.Some module)
(case (&.pl-get def-name (get@ #.defs module))
#.None
(#e.Success [(update@ #.modules
(&.pl-put module-name
(update@ #.defs
(: (-> (List [Text Def]) (List [Text Def]))
(|>> (#.Cons [def-name definition])))
module))
compiler)
[]])
(#.Some already-existing)
((&.throw Cannot-Define-More-Than-Once (%ident full-name)) compiler))
#.None
((&.throw Cannot-Define-In-Unknown-Module (%ident full-name)) compiler))))
(def: #export (create hash name)
(-> Nat Text (Meta Module))
(function [compiler]
(let [module (new-module hash)]
(#e.Success [(update@ #.modules
(&.pl-put name module)
compiler)
module]))))
(def: #export (with-module hash name action)
(All [a] (-> Nat Text (Meta a) (Meta [Module a])))
(do macro.Monad<Meta>
[_ (create hash name)
output (&.with-current-module name
action)
module (macro.find-module name)]
(wrap [module output])))
(do-template [<flagger> <asker> <tag> <description>]
[(def: #export (<flagger> module-name)
(-> Text (Meta Unit))
(function [compiler]
(case (|> compiler (get@ #.modules) (&.pl-get module-name))
(#.Some module)
(let [active? (case (get@ #.module-state module)
#.Active true
_ false)]
(if active?
(#e.Success [(update@ #.modules
(&.pl-put module-name (set@ #.module-state <tag> module))
compiler)
[]])
((&.throw Can-Only-Change-State-Of-Active-Module
(format " Module: " module-name "\n"
"Desired state: " <description>))
compiler)))
#.None
((&.throw Unknown-Module module-name) compiler))))
(def: #export (<asker> module-name)
(-> Text (Meta Bool))
(function [compiler]
(case (|> compiler (get@ #.modules) (&.pl-get module-name))
(#.Some module)
(#e.Success [compiler
(case (get@ #.module-state module)
<tag> true
_ false)])
#.None
((&.throw Unknown-Module module-name) compiler))
))]
[flag-active! active? #.Active "Active"]
[flag-compiled! compiled? #.Compiled "Compiled"]
[flag-cached! cached? #.Cached "Cached"]
)
(do-template [<name> <tag> <type>]
[(def: (<name> module-name)
(-> Text (Meta <type>))
(function [compiler]
(case (|> compiler (get@ #.modules) (&.pl-get module-name))
(#.Some module)
(#e.Success [compiler (get@ <tag> module)])
#.None
((&.throw Unknown-Module module-name) compiler))
))]
[tags-by-module #.tags (List [Text [Nat (List Ident) Bool Type]])]
[types-by-module #.types (List [Text [(List Ident) Bool Type]])]
[module-hash #.module-hash Nat]
)
(def: (ensure-undeclared-tags module-name tags)
(-> Text (List Text) (Meta Unit))
(do macro.Monad<Meta>
[bindings (tags-by-module module-name)
_ (monad.map @
(function [tag]
(case (&.pl-get tag bindings)
#.None
(wrap [])
(#.Some _)
(&.throw Cannot-Declare-Tag-Twice (format "Module: " module-name "\n"
" Tag: " tag))))
tags)]
(wrap [])))
(def: #export (declare-tags tags exported? type)
(-> (List Text) Bool Type (Meta Unit))
(do macro.Monad<Meta>
[current-module macro.current-module-name
[type-module type-name] (case type
(#.Named type-ident _)
(wrap type-ident)
_
(&.throw Cannot-Declare-Tags-For-Unnamed-Type
(format "Tags: " (|> tags (list/map code.text) code.tuple %code) "\n"
"Type: " (%type type))))
_ (ensure-undeclared-tags current-module tags)
_ (&.assert Cannot-Declare-Tags-For-Foreign-Type
(format "Tags: " (|> tags (list/map code.text) code.tuple %code) "\n"
"Type: " (%type type))
(text/= current-module type-module))]
(function [compiler]
(case (|> compiler (get@ #.modules) (&.pl-get current-module))
(#.Some module)
(let [namespaced-tags (list/map (|>> [current-module]) tags)]
(#e.Success [(update@ #.modules
(&.pl-update current-module
(|>> (update@ #.tags (function [tag-bindings]
(list/fold (function [[idx tag] table]
(&.pl-put tag [idx namespaced-tags exported? type] table))
tag-bindings
(list.enumerate tags))))
(update@ #.types (&.pl-put type-name [namespaced-tags exported? type]))))
compiler)
[]]))
#.None
((&.throw Unknown-Module current-module) compiler)))))
|
