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|
(.module:
[lux (#- Code or and function if cond undefined for false true not)
[control
[pipe (#+ case>)]]
[data
["." text
format]
[collection
["." list ("#/." functor fold)]]]
[macro
["." template]]
[type
abstract]])
(def: argument (text.enclose ["(" ")"]))
(def: element (text.enclose ["[" "]"]))
(abstract: #export (Code brand)
{}
Text
(def: #export code
(-> (Code Any) Text)
(|>> :representation))
(do-template [<type> <brand> <super>+]
[(abstract: #export (<brand> brand) {} Any)
(`` (type: #export <type> (|> Any <brand> (~~ (template.splice <super>+)))))]
[Expression Expression' [Code]]
[Computation Computation' [Expression' Code]]
[Location Location' [Computation' Expression' Code]]
)
(do-template [<type> <brand> <super>+]
[(abstract: #export <brand> {} Any)
(`` (type: #export <type> (|> <brand> (~~ (template.splice <super>+)))))]
[Var Var' [Location' Computation' Expression' Code]]
[Access Access' [Location' Computation' Expression' Code]]
[Statement Statement' [Code]]
)
(do-template [<name> <literal>]
[(def: #export <name> Computation (|> <literal> ..argument :abstraction))]
[null "null"]
[undefined "undefined"]
[false "false"]
[true "true"]
[positive-infinity "Infinity"]
[negative-infinity "-Infinity"]
[not-a-number "NaN"]
)
(def: #export boolean
(-> Bit Computation)
(|>> (case>
#0 ..false
#1 ..true)))
(def: #export number
(-> Frac Computation)
(|>> %f ..argument :abstraction))
(def: sanitize
(-> Text Text)
(`` (|>> (~~ (do-template [<find> <replace>]
[(text.replace-all <find> <replace>)]
["\" "\\"]
[text.tab "\t"]
[text.vertical-tab "\v"]
[text.null "\0"]
[text.back-space "\b"]
[text.form-feed "\f"]
[text.new-line "\n"]
[text.carriage-return "\r"]
[text.double-quote (format "\" text.double-quote)]
))
)))
(def: #export string
(-> Text Computation)
(|>> ..sanitize
(text.enclose [text.double-quote text.double-quote])
:abstraction))
(def: argument-separator ", ")
(def: field-separator ": ")
(def: statement-suffix ";")
(def: #export array
(-> (List Expression) Computation)
(|>> (list/map ..code)
(text.join-with ..argument-separator)
..element
:abstraction))
(def: #export var
(-> Text Var)
(|>> :abstraction))
(def: #export (at index array-or-object)
(-> Expression Expression Access)
(|> (format (:representation array-or-object) (..element (:representation index)))
..argument
:abstraction))
(def: #export (the field object)
(-> Text Expression Access)
(:abstraction (format (:representation object) "." field)))
(def: #export (apply/* function inputs)
(-> Expression (List Expression) Computation)
(|> inputs
(list/map ..code)
(text.join-with ..argument-separator)
..argument
(format (:representation function))
:abstraction))
(do-template [<apply> <arg>+ <type>+ <function>+]
[(`` (def: #export (<apply> function)
(-> Expression (~~ (template.splice <type>+)) Computation)
(.function (_ (~~ (template.splice <arg>+)))
(..apply/* function (list (~~ (template.splice <arg>+)))))))
(`` (do-template [<definition> <function>]
[(def: #export <definition> (<apply> (..var <function>)))]
(~~ (template.splice <function>+))))]
[apply/1 [_0] [Expression]
[[not-a-number? "isNaN"]]]
[apply/2 [_0 _1] [Expression Expression]
[]]
[apply/3 [_0 _1 _2] [Expression Expression Expression]
[]]
)
(def: #export (do method inputs object)
(-> Text (List Expression) Expression Computation)
(apply/* (..the method object) inputs))
(def: #export object
(-> (List [Text Expression]) Computation)
(|>> (list/map (.function (_ [key val])
(format (:representation (..string key)) ..field-separator (:representation val))))
(text.join-with ..argument-separator)
(text.enclose ["{" "}"])
..argument
:abstraction))
(def: #export (, pre post)
(-> Expression Expression Computation)
(|> (format (:representation pre) ", " (:representation post))
..argument
:abstraction))
(def: #export (then pre post)
(-> Statement Statement Statement)
(:abstraction (format (:representation pre)
text.new-line
(:representation post))))
(def: nest
(-> Text Text)
(text.replace-all text.new-line (format text.new-line text.tab)))
(def: block
(-> Statement Text)
(|>> :representation
(format text.new-line)
..nest
(text.enclose ["{"
(format text.new-line "}")])))
(def: #export (function name inputs body)
(-> Var (List Var) Statement Computation)
(|> body
..block
(format "function " (:representation name)
(|> inputs
(list/map ..code)
(text.join-with ..argument-separator)
..argument)
" ")
..argument
:abstraction))
(def: #export (closure inputs body)
(-> (List Var) Statement Computation)
(|> body
..block
(format "function"
(|> inputs
(list/map ..code)
(text.join-with ..argument-separator)
..argument)
" ")
..argument
:abstraction))
(do-template [<name> <op>]
[(def: #export (<name> param subject)
(-> Expression Expression Computation)
(|> (format (:representation subject) " " <op> " " (:representation param))
..argument
:abstraction))]
[= "==="]
[< "<"]
[<= "<="]
[> ">"]
[>= ">="]
[+ "+"]
[- "-"]
[* "*"]
[/ "/"]
[% "%"]
[left-shift "<<"]
[arithmetic-right-shift ">>"]
[logic-right-shift ">>>"]
[or "||"]
[and "&&"]
[bit-xor "^"]
[bit-or "|"]
[bit-and "&"]
)
(do-template [<name> <prefix>]
[(def: #export <name>
(-> Expression Computation)
(|>> :representation (text.prefix <prefix>) ..argument :abstraction))]
[not "!"]
[bit-not "~"]
[negate "-"]
)
(def: #export (i32 value)
{#.doc "A 32-bit integer expression."}
(-> Int Computation)
(:abstraction (..argument (format (%i value) "|0"))))
(def: #export (? test then else)
(-> Expression Expression Expression Computation)
(|> (format (:representation test)
" ? " (:representation then)
" : " (:representation else))
..argument
:abstraction))
(def: #export type-of
(-> Expression Computation)
(|>> :representation
(format "typeof ")
..argument
:abstraction))
(def: #export (new constructor inputs)
(-> Expression (List Expression) Computation)
(|> (format "new " (:representation constructor)
(|> inputs
(list/map ..code)
(text.join-with ..argument-separator)
..argument))
..argument
:abstraction))
(def: #export statement
(-> Expression Statement)
(|>> :representation (text.suffix ..statement-suffix) :abstraction))
(def: #export use-strict
Statement
(:abstraction (format text.double-quote "use strict" text.double-quote ..statement-suffix)))
(def: #export (declare name)
(-> Var Statement)
(:abstraction (format "var " (:representation name) ..statement-suffix)))
(def: #export (define name value)
(-> Var Expression Statement)
(:abstraction (format "var " (:representation name) " = " (:representation value) ..statement-suffix)))
(def: #export (set name value)
(-> Location Expression Statement)
(:abstraction (format (:representation name) " = " (:representation value) ..statement-suffix)))
(def: #export (throw message)
(-> Expression Statement)
(:abstraction (format "throw " (:representation message) ..statement-suffix)))
(def: #export (return value)
(-> Expression Statement)
(:abstraction (format "return " (:representation value) ..statement-suffix)))
(def: #export (delete value)
(-> Location Statement)
(:abstraction (format "delete " (:representation value) ..statement-suffix)))
(def: #export (if test then! else!)
(-> Expression Statement Statement Statement)
(:abstraction (format "if(" (:representation test) ") "
(..block then!)
" else "
(..block else!))))
(def: #export (when test then!)
(-> Expression Statement Statement)
(:abstraction (format "if(" (:representation test) ") "
(..block then!))))
(def: #export (while test body)
(-> Expression Statement Statement)
(:abstraction (format "while(" (:representation test) ") "
(..block body))))
(def: #export (try body [exception catch])
(-> Statement [Var Statement] Statement)
(:abstraction (format "try "
(..block body)
" catch(" (:representation exception) ") "
(..block catch))))
(def: #export (for var init condition update iteration)
(-> Var Expression Expression Expression Statement Statement)
(:abstraction (format "for(" (:representation (..define var init))
" " (:representation condition)
..statement-suffix " " (:representation update)
")"
(..block iteration))))
(do-template [<name> <js>]
[(def: #export <name>
(-> Location Expression)
(|>> :representation
(text.suffix <js>)
:abstraction))]
[++ "++"]
[-- "--"]
)
)
(def: #export (cond clauses else!)
(-> (List [Expression Statement]) Statement Statement)
(list/fold (.function (_ [test then!] next!)
(..if test then! next!))
else!
(list.reverse clauses)))
|