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|
(.require
[library
[lux (.except Alias)
[abstract
[monad (.only do)]]
[control
["<>" parser (.use "[1]#[0]" monad)]
["[0]" io]
["[0]" maybe]]
[data
["[0]" product]
["[0]" text
["%" \\format (.only format)]]
[collection
["[0]" list (.use "[1]#[0]" functor)]]]
["[0]" meta (.only)
[type
["[0]" nominal (.except def)]]
["[0]" code (.only)
["<[1]>" \\parser (.only Parser)]]
[macro (.only with_symbols)
[syntax (.only syntax)]
["[0]" template]]]]])
(nominal.def .public (Object brand) Any)
(with_template [<name>]
[(with_expansions [<brand> (template.symbol [<name> "'"])]
(nominal.def .public <brand> Any)
(type .public <name>
(..Object <brand>)))]
[Nil]
[Function]
)
(with_template [<name> <type>]
[(type .public <name>
<type>)]
[Boolean Bit]
[Integer Int]
[Float Frac]
[String Text]
)
(type Nilable
[Bit Code])
(def nilable
(Parser Nilable)
(let [token (' "?")]
(<| (<>.and (<>.parses? (<code>.this token)))
(<>.after (<>.not (<code>.this token)))
<code>.any)))
(type Alias
Text)
(def alias
(Parser Alias)
(<>.after (<code>.this (' "as")) <code>.local))
(type Field
[Bit Text (Maybe Alias) Nilable])
(def static!
(Parser Any)
(<code>.this (' "static")))
(def field
(Parser Field)
(<code>.form (all <>.and
(<>.parses? ..static!)
<code>.local
(<>.maybe ..alias)
..nilable)))
(def constant
(Parser Field)
(<code>.form (all <>.and
(<>#in true)
<code>.local
(<>.maybe ..alias)
..nilable)))
(type Common_Method
(Record
[#name Text
#alias (Maybe Alias)
#inputs (List Nilable)
#io? Bit
#try? Bit
#output Nilable]))
(def common_method
(Parser Common_Method)
(all <>.and
<code>.local
(<>.maybe ..alias)
(<code>.tuple (<>.some ..nilable))
(<>.parses? (<code>.this (' "io")))
(<>.parses? (<code>.this (' "try")))
..nilable))
(def input_variables
(-> (List Nilable) (List [Bit Code]))
(|>> list.enumeration
(list#each (function (_ [idx [nilable? type]])
[nilable? (|> idx %.nat code.local)]))))
(def (nilable_type [nilable? type])
(-> Nilable Code)
(if nilable?
(` (.Maybe (, type)))
type))
(def (with_nil g!temp [nilable? input])
(-> Code [Bit Code] Code)
(if nilable?
(` (when (, input)
{.#Some (, g!temp)}
(, g!temp)
{.#None}
("scheme object nil")))
input))
(def (without_nil g!temp [nilable? outputT] output)
(-> Code Nilable Code Code)
(if nilable?
(` (let [(, g!temp) (, output)]
(if ("scheme object nil?" (, g!temp))
{.#None}
{.#Some (, g!temp)})))
(` (let [(, g!temp) (, output)]
(if (not ("scheme object nil?" (, g!temp)))
(, g!temp)
(.panic! "Nil is an invalid value!"))))))
(type Import
(Variant
{#Function Common_Method}
{#Constant Field}))
(def import
(Parser Import)
(all <>.or
(<code>.form ..common_method)
..constant
))
(def (with_io with? without)
(-> Bit Code Code)
(if with?
(` (io.io (, without)))
without))
(def (io_type io? rawT)
(-> Bit Code Code)
(if io?
(` (io.IO (, rawT)))
rawT))
(def (with_try with? without_try)
(-> Bit Code Code)
(if with?
(` (..try (, 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 io? try? outputT)
(-> Code Code Code (List Nilable) Bit Bit Nilable Code)
(let [g!inputs (input_variables inputsT)]
(` (def ((, g!method)
[(,* (list#each product.right g!inputs))])
(-> [(,* (list#each nilable_type inputsT))]
(, (|> (nilable_type outputT)
(try_type try?)
(io_type io?))))
(as_expected
(, (<| (with_io io?)
(with_try try?)
(without_nil g!temp outputT)
(` ("scheme apply"
(as ..Function (, source))
(,* (list#each (with_nil g!temp) g!inputs)))))))))))
(def .public import
(syntax (_ [import ..import])
(with_symbols [g!temp]
(when import
{#Function [name alias inputsT io? try? outputT]}
(let [imported (` ("scheme constant" (, (code.text name))))]
(in (list (..make_function (code.local (maybe.else name alias))
g!temp
imported
inputsT
io?
try?
outputT))))
{#Constant [_ name alias fieldT]}
(let [imported (` ("scheme constant" (, (code.text name))))
g!name (code.local (maybe.else name alias))]
(in (list (` (def (, g!name)
(syntax ((, g!name) [])
(of meta.monad (,' in)
(list (` (.as (, (nilable_type fieldT)) (, imported)))))))))))
))))
|
