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... This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
... If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
(.require
[library
[lux (.except)
[abstract
["[0]" monad (.only do)]]
[control
["[0]" maybe (.use "[1]#[0]" monad)]]
[data
[collection
["[0]" list]]]
[math
[number
["n" nat]]]
[meta
[macro
["^" pattern]]]]]
[////
["/" synthesis (.only Path Abstraction)]
["[0]" analysis (.only Environment)
["[1]/[0]" complex]]
[///
[arity (.only Arity)]
["[0]" reference (.only)
["[0]" variable (.only Register Variable)]]]])
(type .public (Transform of)
(-> of
(Maybe of)))
(def .public (register_optimization offset)
(-> Register
(-> Register
Register))
(|>> -- (n.+ offset)))
(def (path_optimization body_optimization offset)
(-> (Transform /.Term) Register
(Transform Path))
(function (again path)
(when path
{/.#Bind register}
{.#Some {/.#Bind (register_optimization offset register)}}
(^.with_template [<tag>]
[{<tag> left right}
(do maybe.monad
[left' (again left)
right' (again right)]
(in {<tag> left' right'}))])
([/.#Alt] [/.#Seq])
{/.#Bit_Fork test then else}
(do [! maybe.monad]
[then (again then)
else (when else
{.#Some else}
(of ! each (|>> {.#Some}) (again else))
{.#None}
(in {.#None}))]
(in {/.#Bit_Fork test then else}))
(^.with_template [<tag>]
[{<tag> [[test then] elses]}
(do [! maybe.monad]
[then (again then)
elses (monad.each ! (function (_ [else_test else_then])
(do !
[else_then (again else_then)]
(in [else_test else_then])))
elses)]
(in {<tag> [[test then] elses]}))])
([/.#I64_Fork]
[/.#F64_Fork]
[/.#Text_Fork])
{/.#Then body}
(|> body
body_optimization
(maybe#each (|>> {/.#Then})))
_
{.#Some path})))
(def (body_optimization true_loop? offset scope_environment arity expr)
(-> Bit Register (Environment /.Term) Arity
(Transform /.Term))
(loop (again [return? true
expr expr])
(when expr
[@ {/.#Simple _}]
{.#Some expr}
[@ {/.#Structure structure}]
(when structure
{analysis/complex.#Variant variant}
(do maybe.monad
[value' (|> variant (the analysis/complex.#value) (again false))]
(in (|> variant
(has analysis/complex.#value value')
(/.variant @))))
{analysis/complex.#Tuple tuple}
(|> tuple
(monad.each maybe.monad (again false))
(maybe#each (|>> (/.tuple @)))))
[@ {/.#Reference reference}]
(when reference
{reference.#Variable (variable.self)}
(if true_loop?
{.#None}
{.#Some expr})
(reference.constant constant)
{.#Some expr}
(reference.local register)
{.#Some [@ {/.#Reference (reference.local (register_optimization offset register))}]}
(reference.foreign register)
(if true_loop?
(list.item register scope_environment)
{.#Some expr}))
(/.branch/when @ [input path])
(do maybe.monad
[input' (again false input)
path' (path_optimization (again return?) offset path)]
(in (|> path' [input'] (/.branch/when @))))
(/.branch/exec @ [this that])
(do maybe.monad
[this (again false this)
that (again return? that)]
(in (/.branch/exec @ [this that])))
(/.branch/let @ [input register body])
(do maybe.monad
[input' (again false input)
body' (again return? body)]
(in (/.branch/let @ [input' (register_optimization offset register) body'])))
(/.branch/if @ [input then else])
(do maybe.monad
[input' (again false input)
then' (again return? then)
else' (again return? else)]
(in (/.branch/if @ [input' then' else'])))
(/.branch/get @ [path record])
(do maybe.monad
[record (again false record)]
(in (/.branch/get @ [path record])))
(/.loop/scope @ scope)
(do [! maybe.monad]
[inits' (|> scope
(the /.#inits)
(monad.each ! (again false)))
iteration' (again return? (the /.#iteration scope))]
(in (/.loop/scope @ [/.#start (|> scope (the /.#start) (register_optimization offset))
/.#inits inits'
/.#iteration iteration'])))
(/.loop/again @ args)
(|> args
(monad.each maybe.monad (again false))
(maybe#each (|>> (/.loop/again @))))
(/.function/abstraction @ [environment arity body])
(do [! maybe.monad]
[environment' (monad.each ! (again false) environment)]
(in (/.function/abstraction @ [environment' arity body])))
(/.function/apply @ [abstraction arguments])
(do [! maybe.monad]
[arguments' (monad.each ! (again false) arguments)]
(with_expansions [<application> (these (do !
[abstraction' (again false abstraction)]
(in (/.function/apply @ [abstraction' arguments']))))]
(when abstraction
[@ {/.#Reference {reference.#Variable (variable.self)}}]
(if (and return?
(n.= arity (list.size arguments)))
(in (/.loop/again @ arguments'))
(if true_loop?
{.#None}
<application>))
_
<application>)))
... TODO: Stop relying on this custom code.
[@ {/.#Extension [[.prelude "when_char#|translation"] (list.partial input else matches)]}]
(if return?
(do [! maybe.monad]
[input (again false input)
matches (monad.each !
(is (-> /.Term
(Maybe /.Term))
(function (_ match)
(when match
[@ {/.#Structure {analysis/complex.#Tuple (list when then)}}]
(do !
[when (again false when)
then (again return? then)]
(in [@ {/.#Structure {analysis/complex.#Tuple (list when then)}}]))
_
(again false match))))
matches)
else (again return? else)]
(in [@ {/.#Extension [[.prelude "when_char#|translation"] (list.partial input else matches)]}]))
{.#None})
[@ {/.#Extension [name args]}]
(|> args
(monad.each maybe.monad (again false))
(maybe#each (|>> [name] {/.#Extension} [@]))))))
(def .public (optimization true_loop? offset inits functionS)
(-> Bit Register (List /.Term) Abstraction
(Maybe [Register (List /.Term) /.Term]))
(|> (the /.#body functionS)
(body_optimization true_loop? offset (the /.#environment functionS) (the /.#arity functionS))
(maybe#each (|>> [offset inits]))))
|
