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|
(.module:
[lux #*
[control
["." monad (#+ do)]]
[data
["." text
format]
[collection
["." list ("list/." Functor<List>)]
["." dictionary (#+ Dictionary)]]]
[type
["." check]]
["." macro]
[io (#+ IO)]]
["." ///
["." bundle]
["//." //
["." analysis (#+ Analysis Handler Bundle)
[".A" type]
[".A" case]
[".A" function]]
[//
[evaluation (#+ Eval)]]]])
## [Utils]
(def: (simple inputsT+ outputT)
(-> (List Type) Type Handler)
(let [num-expected (list.size inputsT+)]
(function (_ extension-name analyse args)
(let [num-actual (list.size args)]
(if (n/= num-expected num-actual)
(do ////.Monad<Operation>
[_ (typeA.infer outputT)
argsA (monad.map @
(function (_ [argT argC])
(typeA.with-type argT
(analyse argC)))
(list.zip2 inputsT+ args))]
(wrap (#analysis.Extension extension-name argsA)))
(////.throw bundle.incorrect-arity [extension-name num-expected num-actual]))))))
(def: #export (nullary valueT)
(-> Type Handler)
(simple (list) valueT))
(def: #export (unary inputT outputT)
(-> Type Type Handler)
(simple (list inputT) outputT))
(def: #export (binary subjectT paramT outputT)
(-> Type Type Type Handler)
(simple (list subjectT paramT) outputT))
(def: #export (trinary subjectT param0T param1T outputT)
(-> Type Type Type Type Handler)
(simple (list subjectT param0T param1T) outputT))
## [Analysers]
## "lux is" represents reference/pointer equality.
(def: lux::is
Handler
(function (_ extension-name analyse args)
(do ////.Monad<Operation>
[[var-id varT] (typeA.with-env check.var)]
((binary varT varT Bit extension-name)
analyse args))))
## "lux try" provides a simple way to interact with the host platform's
## error-handling facilities.
(def: lux::try
Handler
(function (_ extension-name analyse args)
(case args
(^ (list opC))
(do ////.Monad<Operation>
[[var-id varT] (typeA.with-env check.var)
_ (typeA.infer (type (Either Text varT)))
opA (typeA.with-type (type (IO varT))
(analyse opC))]
(wrap (#analysis.Extension extension-name (list opA))))
_
(////.throw bundle.incorrect-arity [extension-name 1 (list.size args)]))))
(def: lux::in-module
Handler
(function (_ extension-name analyse argsC+)
(case argsC+
(^ (list [_ (#.Text module-name)] exprC))
(analysis.with-current-module module-name
(analyse exprC))
_
(////.throw bundle.invalid-syntax [extension-name]))))
(do-template [<name> <type>]
[(def: (<name> eval)
(-> Eval Handler)
(function (_ extension-name analyse args)
(case args
(^ (list typeC valueC))
(do ////.Monad<Operation>
[count (///.lift macro.count)
actualT (:: @ map (|>> (:coerce Type))
(eval count Type typeC))
_ (typeA.infer actualT)]
(typeA.with-type <type>
(analyse valueC)))
_
(////.throw bundle.incorrect-arity [extension-name 2 (list.size args)]))))]
[lux::check actualT]
[lux::coerce Any]
)
(def: lux::check::type
Handler
(function (_ extension-name analyse args)
(case args
(^ (list valueC))
(do ////.Monad<Operation>
[_ (typeA.infer Type)
valueA (typeA.with-type Type
(analyse valueC))]
(wrap valueA))
_
(////.throw bundle.incorrect-arity [extension-name 1 (list.size args)]))))
(def: (bundle::lux eval)
(-> Eval Bundle)
(|> bundle.empty
(bundle.install "is" lux::is)
(bundle.install "try" lux::try)
(bundle.install "check" (lux::check eval))
(bundle.install "coerce" (lux::coerce eval))
(bundle.install "check type" lux::check::type)
(bundle.install "in-module" lux::in-module)))
(def: bundle::io
Bundle
(<| (bundle.prefix "io")
(|> bundle.empty
(bundle.install "log" (unary Text Any))
(bundle.install "error" (unary Text Nothing))
(bundle.install "exit" (unary Int Nothing))
(bundle.install "current-time" (nullary Int)))))
(def: bundle::bit
Bundle
(<| (bundle.prefix "bit")
(|> bundle.empty
(bundle.install "and" (binary Nat Nat Nat))
(bundle.install "or" (binary Nat Nat Nat))
(bundle.install "xor" (binary Nat Nat Nat))
(bundle.install "left-shift" (binary Nat Nat Nat))
(bundle.install "logical-right-shift" (binary Nat Nat Nat))
(bundle.install "arithmetic-right-shift" (binary Int Nat Int))
)))
(def: bundle::int
Bundle
(<| (bundle.prefix "int")
(|> bundle.empty
(bundle.install "+" (binary Int Int Int))
(bundle.install "-" (binary Int Int Int))
(bundle.install "*" (binary Int Int Int))
(bundle.install "/" (binary Int Int Int))
(bundle.install "%" (binary Int Int Int))
(bundle.install "=" (binary Int Int Bit))
(bundle.install "<" (binary Int Int Bit))
(bundle.install "to-frac" (unary Int Frac))
(bundle.install "char" (unary Int Text)))))
(def: bundle::frac
Bundle
(<| (bundle.prefix "frac")
(|> bundle.empty
(bundle.install "+" (binary Frac Frac Frac))
(bundle.install "-" (binary Frac Frac Frac))
(bundle.install "*" (binary Frac Frac Frac))
(bundle.install "/" (binary Frac Frac Frac))
(bundle.install "%" (binary Frac Frac Frac))
(bundle.install "=" (binary Frac Frac Bit))
(bundle.install "<" (binary Frac Frac Bit))
(bundle.install "smallest" (nullary Frac))
(bundle.install "min" (nullary Frac))
(bundle.install "max" (nullary Frac))
(bundle.install "to-rev" (unary Frac Rev))
(bundle.install "to-int" (unary Frac Int))
(bundle.install "encode" (unary Frac Text))
(bundle.install "decode" (unary Text (type (Maybe Frac)))))))
(def: bundle::text
Bundle
(<| (bundle.prefix "text")
(|> bundle.empty
(bundle.install "=" (binary Text Text Bit))
(bundle.install "<" (binary Text Text Bit))
(bundle.install "concat" (binary Text Text Text))
(bundle.install "index" (trinary Text Text Nat (type (Maybe Nat))))
(bundle.install "size" (unary Text Nat))
(bundle.install "char" (binary Text Nat (type (Maybe Nat))))
(bundle.install "clip" (trinary Text Nat Nat (type (Maybe Text))))
)))
(def: #export (bundle eval)
(-> Eval Bundle)
(<| (bundle.prefix "lux")
(|> bundle.empty
(dictionary.merge (bundle::lux eval))
(dictionary.merge bundle::bit)
(dictionary.merge bundle::int)
(dictionary.merge bundle::frac)
(dictionary.merge bundle::text)
(dictionary.merge bundle::io)
)))
|