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(.module:
[lux #- not or and function]
(lux (data [text]
text/format
(coll [list "list/" Functor<List> Fold<List>]))))
(type: #export Lua Text)
(type: #export Expression Lua)
(type: #export Statement Lua)
(def: #export nil
Expression
"nil")
(def: #export bool
(-> Bit Expression)
%b)
(def: #export int
(-> Int Expression)
%i)
(def: #export float
(-> Frac Expression)
%f)
(def: #export (string value)
(-> Text Expression)
(%t value))
(def: #export (array elements)
(-> (List Expression) Expression)
(format "{" (text.join-with "," elements) "}"))
(def: #export (nth idx array)
(-> Expression Expression Expression)
(format "(" array ")[" idx "]"))
(def: #export (length array)
(-> Expression Expression)
(format "#(" array ")"))
(def: #export (apply func args)
(-> Expression (List Expression) Expression)
(format func "(" (text.join-with "," args) ")"))
(def: #export (method field table args)
(-> Text Expression (List Expression) Expression)
(format table ":" field "(" (text.join-with "," args) ")"))
(def: #export (local! name value)
(-> Text (Maybe Expression) Statement)
(case value
#.None
(format "local " name ";")
(#.Some value)
(format "local " name " = " value ";")))
(def: #export (global! name value)
(-> Text (Maybe Expression) Statement)
(case value
#.None
(format name ";")
(#.Some value)
(format name " = " value ";")))
(def: #export (set! name value)
(-> Text Expression Statement)
(format name " = " value ";"))
(def: #export (if! test then! else!)
(-> Expression Statement Statement Statement)
(format "if " test
" then " then!
" else " else!
" end;"))
(def: #export (when! test then!)
(-> Expression Statement Statement)
(format "if " test
" then " then!
" end;"))
(def: #export (cond! clauses else!)
(-> (List [Expression Statement]) Statement Statement)
(list/fold (.function (_ [test then!] next!)
(if! test then! next!))
else!
(list.reverse clauses)))
(def: #export (block! statements)
(-> (List Statement) Statement)
(text.join-with " " statements))
(def: #export (while! test body)
(-> Expression Statement Statement)
(format "while " test " do " body " end;"))
(def: #export (for-in! vars source body)
(-> (List Text) Expression Statement Statement)
(format "for " (text.join-with "," vars) " in " source
" do " body " end;"))
(def: #export (for-step! var from to step body)
(-> Text Expression Expression Expression Statement
Statement)
(format "for " var " = " from ", " to ", " step
" do " body " end;"))
(def: #export (error message)
(-> Expression Expression)
(apply "error" (list message)))
(def: #export (return! value)
(-> Expression Statement)
(format "return " value ";"))
(def: #export (function args body)
(-> (List Text) Statement Expression)
(format "("
(format "function " (format "(" (text.join-with ", " args) ")")
" "
body
" end")
")"))
(def: #export (function! name args body)
(-> Text (List Text) Statement Expression)
(format "function " name (format "(" (text.join-with ", " args) ")")
" "
body
" end;"))
(def: #export (table fields)
(-> (List [Text Expression]) Expression)
(format "{"
(|> fields
(list/map (.function (_ [key val])
(format key " = " val)))
(text.join-with ", "))
"}"))
(do-template [<name> <op>]
[(def: #export (<name> param subject)
(-> Expression Expression Expression)
(format "(" subject " " <op> " " param ")"))]
[= "=="]
[< "<"]
[<= "<="]
[> ">"]
[>= ">="]
[+ "+"]
[- "-"]
[* "*"]
[/ "/"]
[// "//"]
[% "%"]
)
(do-template [<name> <op>]
[(def: #export (<name> param subject)
(-> Expression Expression Expression)
(format "(" param " " <op> " " subject ")"))]
[or "or"]
[and "and"]
[bit-or "|"]
[bit-and "&"]
[bit-xor "~"]
)
(do-template [<name> <op>]
[(def: #export (<name> param subject)
(-> Expression Expression Expression)
(format "(" subject " " <op> " " param ")"))]
[bit-shl "<<"]
[bit-shr ">>"]
)
(def: #export (not subject)
(-> Expression Expression)
(format "(not " subject ")"))
|
