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(.module:
[lux #*
[abstract
[monad (#+ do)]]
[control
["." io]
["<>" parser
["<c>" code (#+ Parser)]]]
[data
["." product]
[text
["%" format (#+ format)]]
[collection
["." list ("#@." functor)]]]
[type
abstract]
["." macro (#+ with-gensyms)
[syntax (#+ syntax:)]
["." code]
["." template]]])
(abstract: #export (Object brand) {} Any)
(template [<name>]
[(with-expansions [<brand> (template.identifier [<name> "'"])]
(abstract: #export <brand> {} Any)
(type: #export <name> (Object <brand>)))]
[Function]
[Symbol]
[Null]
[Undefined]
)
(template [<name> <type>]
[(type: #export <name> <type>)]
[Boolean Bit]
[Number Frac]
[String Text]
)
(type: Nullable [Bit Code])
(def: nullable
(Parser Nullable)
(let [token (' #?)]
(<| (<>.and (<>.parses? (<c>.this! token)))
(<>.after (<>.not (<c>.this! token)))
<c>.any)))
(type: Constructor (List Nullable))
(def: constructor
(Parser Constructor)
(<c>.form (<>.after (<c>.this! (' new))
(<c>.tuple (<>.some ..nullable)))))
(type: Field [Text Nullable])
(def: field
(Parser Field)
(<c>.form ($_ <>.and
<c>.local-identifier
..nullable)))
(type: Common-Method [Text (List Nullable) Bit Nullable])
(type: Static-Method Common-Method)
(type: Virtual-Method Common-Method)
(type: Method
(#Static Static-Method)
(#Virtual Virtual-Method))
(def: common-method
(Parser Common-Method)
($_ <>.and
<c>.local-identifier
(<c>.tuple (<>.some ..nullable))
(<>.parses? (<c>.this! (' #try)))
..nullable))
(def: static-method
(<c>.form (<>.after (<c>.this! (' #static)) ..common-method)))
(def: method
(Parser Method)
(<>.or ..static-method
(<c>.form ..common-method)))
(type: Member
(#Constructor Constructor)
(#Field Field)
(#Method Method))
(def: member
(Parser Member)
($_ <>.or
..constructor
..field
..method
))
(def: input-variables
(-> (List Nullable) (List [Bit Code]))
(|>> list.enumerate
(list@map (function (_ [idx [nullable? type]])
[nullable? (|> idx %.nat code.local-identifier)]))))
(def: (nullable-type [nullable? type])
(-> Nullable Code)
(if nullable?
(` (.Maybe (~ type)))
type))
(def: (with-null g!temp [nullable? input])
(-> Code [Bit Code] Code)
(if nullable?
(` (case (~ input)
(#.Some (~ g!temp))
(~ g!temp)
#.None
("js object null")))
input))
(def: (without-null g!temp [nullable? outputT] output)
(-> Code Nullable Code Code)
(if nullable?
(` (let [(~ g!temp) (~ output)]
(if ("js object null?" (~ g!temp))
#.None
(#.Some (~ g!temp)))))
output))
(type: Import
(#Class [Text (List Member)])
(#Function Static-Method))
(def: import
($_ <>.or
($_ <>.and
<c>.local-identifier
(<>.some member))
..static-method
))
(def: (with-try try? without-try)
(-> Bit Code Code)
(if try?
(` ("lux try"
((~! io.io) (~ without-try))))
without-try))
(def: (try-type try? rawT)
(-> Bit Code Code)
(if try?
(` (.Either .Text (~ rawT)))
rawT))
(def: (make-function g!method g!temp source inputsT try? outputT)
(-> Code Code Text (List Nullable) Bit Nullable Code)
(let [g!inputs (input-variables inputsT)]
(` (def: ((~ g!method)
[(~+ (list@map product.right g!inputs))])
(-> [(~+ (list@map nullable-type inputsT))]
(~ (try-type try? (nullable-type outputT))))
(:assume
(~ (<| (with-try try?)
(without-null g!temp outputT)
(` ("js apply"
("js constant" (~ (code.text source)))
(~+ (list@map (with-null g!temp) g!inputs)))))))))))
(syntax: #export (import: {import ..import})
(with-gensyms [g!temp]
(case import
(#Class [class members])
(with-gensyms [g!object]
(let [qualify (: (-> Text Code)
(|>> (format class "::") code.local-identifier))
g!type (code.local-identifier class)]
(wrap (list& (` (type: (~ g!type) (..Object (primitive (~ (code.text class))))))
(list@map (function (_ member)
(case member
(#Constructor inputsT)
(let [g!inputs (input-variables inputsT)]
(` (def: ((~ (qualify "new"))
[(~+ (list@map product.right g!inputs))])
(-> [(~+ (list@map nullable-type inputsT))]
(~ g!type))
(:assume
("js object new"
("js constant" (~ (code.text class)))
[(~+ (list@map (with-null g!temp) g!inputs))])))))
(#Field [field fieldT])
(` (def: ((~ (qualify field))
(~ g!object))
(-> (~ g!type)
(~ (nullable-type fieldT)))
(:assume
(~ (without-null g!temp fieldT (` ("js object get" (~ (code.text field)) (~ g!object))))))))
(#Method method)
(case method
(#Static [method inputsT try? outputT])
(make-function (qualify method) g!temp method inputsT try? outputT)
(#Virtual [method inputsT try? outputT])
(let [g!inputs (input-variables inputsT)]
(` (def: ((~ (qualify method))
[(~+ (list@map product.right g!inputs))]
(~ g!object))
(-> [(~+ (list@map nullable-type inputsT))]
(~ g!type)
(~ (try-type try? (nullable-type outputT))))
(:assume
(~ (<| (with-try try?)
(without-null g!temp outputT)
(` ("js object do"
(~ (code.text method))
(~ g!object)
[(~+ (list@map (with-null g!temp) g!inputs))])))))))))))
members)))))
(#Function [name inputsT try? outputT])
(wrap (list (make-function (code.local-identifier name) g!temp name inputsT try? outputT)))
)))
(syntax: #export (type-of object)
(wrap (list (` ("js type-of" (~ object))))))
(def: #export on-browser?
Bit
(case (..type-of ("js constant" "window"))
"undefined"
false
_
true))
(def: #export on-node-js?
Bit
(case (..type-of ("js constant" "process"))
"undefined"
false
_
(case (:coerce .Text
("js apply"
("js constant" "Object.prototype.toString.call")
("js constant" "process")))
"[object process]"
true
_
false)))
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