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|
(.module:
[library
[lux #*
["@" target]
["." meta]
[abstract
[monad (#+ do)]]
[control
["." io]
["." maybe]
["<>" parser ("#\." monad)
["<.>" code (#+ Parser)]]]
[data
["." product]
["." text
["%" format]]
[collection
["." list ("#\." functor mix)]]]
[type
abstract]
[macro (#+ with_identifiers)
[syntax (#+ syntax:)]
["." code]
["." template]]]])
(abstract: .public (Object brand)
{}
Any)
(template [<name>]
[(with_expansions [<brand> (template.identifier [<name> "'"])]
(abstract: <brand> {} Any)
(type: .public <name>
(..Object <brand>)))]
[Nil]
[Function]
[Table]
)
(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: Field
[Bit Text Nilable])
(def: static!
(Parser Any)
(<code>.this! (' #static)))
(def: field
(Parser Field)
(<code>.form ($_ <>.and
(<>.parses? ..static!)
<code>.local_identifier
..nilable)))
(def: constant
(Parser Field)
(<code>.form ($_ <>.and
(<>\in true)
<code>.local_identifier
..nilable)))
(type: Common_Method
{#name Text
#alias (Maybe Text)
#inputs (List Nilable)
#io? Bit
#try? Bit
#output Nilable})
(type: Static_Method Common_Method)
(type: Virtual_Method Common_Method)
(type: Method
(Variant
(#Static Static_Method)
(#Virtual Virtual_Method)))
(def: common_method
(Parser Common_Method)
($_ <>.and
<code>.local_identifier
(<>.maybe (<>.after (<code>.this! (' #as)) <code>.local_identifier))
(<code>.tuple (<>.some ..nilable))
(<>.parses? (<code>.this! (' #io)))
(<>.parses? (<code>.this! (' #try)))
..nilable))
(def: static_method
(<>.after ..static! ..common_method))
(def: method
(Parser Method)
(<code>.form (<>.or ..static_method
..common_method)))
(type: Member
(Variant
(#Field Field)
(#Method Method)))
(def: member
(Parser Member)
($_ <>.or
..field
..method
))
(def: input_variables
(-> (List Nilable) (List [Bit Code]))
(|>> list.enumeration
(list\each (function (_ [idx [nilable? type]])
[nilable? (|> idx %.nat code.local_identifier)]))))
(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?
(` (case (~ input)
(#.Some (~ g!temp))
(~ g!temp)
#.None
("lua object nil")))
input))
(def: (without_nil g!temp [nilable? outputT] output)
(-> Code Nilable Code Code)
(if nilable?
(` (let [(~ g!temp) (~ output)]
(if ("lua object nil?" (~ g!temp))
#.None
(#.Some (~ g!temp)))))
(` (let [(~ g!temp) (~ output)]
(if (not ("lua object nil?" (~ g!temp)))
(~ g!temp)
(.panic! "Nil is an invalid value!"))))))
(type: Import
(Variant
(#Class [Text Text (List Member)])
(#Function Static_Method)
(#Constant Field)))
(def: import
($_ <>.or
(<>.and <code>.local_identifier
(<>.else ["" (list)]
(<code>.tuple (<>.and <code>.text
(<>.some member)))))
(<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?))))
(:expected
(~ (<| (with_io io?)
(with_try try?)
(without_nil g!temp outputT)
(` ("lua apply"
(:as ..Function (~ source))
(~+ (list\each (with_nil g!temp) g!inputs)))))))))))
(syntax: .public (import: [import ..import])
{#.doc (example "Easily import types, methods, functions and constants."
(import: (os/getenv [..String] #io #? ..String)))}
(with_identifiers [g!temp]
(case import
(#Class [class format members])
(with_identifiers [g!object]
(let [qualify (: (-> Text Code)
(function (_ member_name)
(|> format
(text.replaced "#" class)
(text.replaced "." member_name)
code.local_identifier)))
g!type (code.local_identifier class)
real_class (text.replaced "/" "." class)
imported (case (text.all_split_by "/" class)
(#.Item head tail)
(list\mix (function (_ sub super)
(` ("lua object get" (~ (code.text sub))
(:as (..Object .Any) (~ super)))))
(` ("lua import" (~ (code.text head))))
tail)
#.End
(` ("lua import" (~ (code.text class)))))]
(in (list& (` (type: (~ g!type)
(..Object (primitive (~ (code.text real_class))))))
(list\each (function (_ member)
(case member
(#Field [static? field fieldT])
(if static?
(` ((~! syntax:) ((~ (qualify field)) [])
(\ (~! meta.monad) (~' in)
(list (` (.:as (~ (nilable_type fieldT))
("lua object get" (~ (code.text field))
(:as (..Object .Any) (~ imported)))))))))
(` (def: ((~ (qualify field))
(~ g!object))
(-> (~ g!type)
(~ (nilable_type fieldT)))
(:expected
(~ (without_nil g!temp fieldT (` ("lua object get" (~ (code.text field))
(:as (..Object .Any) (~ g!object))))))))))
(#Method method)
(case method
(#Static [method alias inputsT io? try? outputT])
(..make_function (qualify (maybe.else method alias))
g!temp
(` ("lua object get" (~ (code.text method))
(:as (..Object .Any) (~ imported))))
inputsT
io?
try?
outputT)
(#Virtual [method alias inputsT io? try? outputT])
(let [g!inputs (input_variables inputsT)]
(` (def: ((~ (qualify (maybe.else method alias)))
[(~+ (list\each product.right g!inputs))]
(~ g!object))
(-> [(~+ (list\each nilable_type inputsT))]
(~ g!type)
(~ (|> (nilable_type outputT)
(try_type try?)
(io_type io?))))
(:expected
(~ (<| (with_io io?)
(with_try try?)
(without_nil g!temp outputT)
(` ("lua object do"
(~ (code.text method))
(~ g!object)
(~+ (list\each (with_nil g!temp) g!inputs)))))))))))))
members)))))
(#Function [name alias inputsT io? try? outputT])
(in (list (..make_function (code.local_identifier (maybe.else name alias))
g!temp
(` ("lua constant" (~ (code.text (text.replaced "/" "." name)))))
inputsT
io?
try?
outputT)))
(#Constant [_ name fieldT])
(in (list (` ((~! syntax:) ((~ (code.local_identifier name)) [])
(\ (~! meta.monad) (~' in)
(list (` (.:as (~ (nilable_type fieldT))
("lua constant" (~ (code.text (text.replaced "/" "." name))))))))))))
)))
(template: .public (closure <inputs> <output>)
{#.doc (example "Allows defining closures/anonymous-functions in the form that Lua expects."
"This is useful for adapting Lux functions for usage by Lua code."
(: ..Function
(closure [left right]
(do_something (:as Foo left) (:as Bar right)))))}
(.:as ..Function
(`` ("lua function"
(~~ (template.amount <inputs>))
(.function (_ [<inputs>])
<output>)))))
|
