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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)]
["[0]" enum]]
[control
["[0]" pipe]
["[0]" maybe (.use "[1]#[0]" functor)]
["[0]" exception (.only Exception)]]
[data
[text
["%" \\format (.only format)]]
[collection
["[0]" list (.use "[1]#[0]" functor monoid)]]]
[math
[number
["n" nat]]]
[meta
[macro
["^" pattern]]]]]
["[0]" //
["[1][0]" loop (.only Transform)]
["//[1]" ///
["/" synthesis (.only Path Abstraction Operation Phase)]
["[0]" phase (.use "[1]#[0]" monad)]
["[0]" analysis (.only Environment)
["[1]/[0]" complex]]
[///
[arity (.only Arity)]
["[1][0]" reference (.only)
["[1]/[0]" variable (.only Register Variable)]]]]])
(exception.def .public (cannot_find_foreign_variable_in_environment [foreign environment])
(Exception [Register (Environment /.Term)])
(exception.report
(list ["Foreign" (%.nat foreign)]
["Environment" (exception.listing /.%synthesis environment)])))
(def .public self_reference
(template (self_reference @)
[(/.variable/local @ 0)]))
(def .public (apply @ phase)
(-> Location Phase
Phase)
(function (_ archive exprA)
(let [[funcA argsA] (analysis.reification exprA)]
(do [! phase.monad]
[funcS (phase archive funcA)
argsS (monad.each ! (phase archive) argsA)]
(with_expansions [<apply> (these (/.function/apply @ [funcS argsS]))]
(when funcS
(/.function/abstraction @ functionS)
(if (n.= (the /.#arity functionS)
(list.size argsS))
(do !
[locals /.locals]
(in (|> functionS
(//loop.optimization true locals argsS)
(maybe#each (is (-> [Nat (List /.Term) /.Term]
/.Term)
(function (_ [start inits iteration])
(when iteration
(/.loop/scope @ [start' inits' output])
(if (and (n.= start start')
(list.empty? inits'))
(/.loop/scope @ [start inits output])
(/.loop/scope @ [start inits iteration]))
_
(/.loop/scope @ [start inits iteration])))))
(maybe.else <apply>))))
(in <apply>))
(/.function/apply @ [funcS' argsS'])
(in (/.function/apply @ [funcS' (list#composite argsS' argsS)]))
_
(in <apply>)))))))
(def (find_foreign environment register)
(-> (Environment /.Term) Register
(Operation /.Term))
(when (list.item register environment)
{.#Some aliased}
(phase#in aliased)
{.#None}
(phase.except ..cannot_find_foreign_variable_in_environment [register environment])))
(def (grow_path grow path)
(-> (-> /.Term (Operation /.Term)) Path
(Operation Path))
(when path
{/.#Bind register}
(phase#in {/.#Bind (++ register)})
(^.with_template [<tag>]
[{<tag> left right}
(do phase.monad
[left' (grow_path grow left)
right' (grow_path grow right)]
(in {<tag> left' right'}))])
([/.#Alt] [/.#Seq])
{/.#Bit_Fork test then else}
(do [! phase.monad]
[then (grow_path grow then)
else (when else
{.#Some else}
(of ! each (|>> {.#Some}) (grow_path grow else))
{.#None}
(in {.#None}))]
(in {/.#Bit_Fork test then else}))
(^.with_template [<tag>]
[{<tag> [[test then] elses]}
(do [! phase.monad]
[then (grow_path grow then)
elses (monad.each ! (function (_ [else_test else_then])
(do !
[else_then (grow_path grow else_then)]
(in [else_test else_then])))
elses)]
(in {<tag> [[test then] elses]}))])
([/.#I64_Fork]
[/.#F64_Fork]
[/.#Text_Fork])
{/.#Then thenS}
(|> thenS
grow
(phase#each (|>> {/.#Then})))
_
(phase#in path)))
(def (grow environment expression)
(-> (Environment /.Term) /.Term
(Operation /.Term))
(when expression
[@ {/.#Structure structure}]
(when structure
{analysis/complex.#Variant [lefts right? subS]}
(|> subS
(grow environment)
(phase#each (|>> [lefts right?] (/.variant @))))
{analysis/complex.#Tuple membersS+}
(|> membersS+
(monad.each phase.monad (grow environment))
(phase#each (|>> (/.tuple @)))))
(..self_reference @)
(phase#in (/.function/apply @ [expression (list (/.variable/local @ 1))]))
[@ {/.#Reference reference}]
(when reference
{////reference.#Variable variable}
(when variable
{////reference/variable.#Local register}
(phase#in (/.variable/local @ (++ register)))
{////reference/variable.#Foreign register}
(..find_foreign environment register))
{////reference.#Constant constant}
(phase#in expression))
[@ {/.#Control control}]
(when control
{/.#Branch branch}
(when branch
{/.#Exec [this that]}
(do phase.monad
[this (grow environment this)
that (grow environment that)]
(in (/.branch/exec @ [this that])))
{/.#Let [inputS register bodyS]}
(do phase.monad
[inputS' (grow environment inputS)
bodyS' (grow environment bodyS)]
(in (/.branch/let @ [inputS' (++ register) bodyS'])))
{/.#If [testS thenS elseS]}
(do phase.monad
[testS' (grow environment testS)
thenS' (grow environment thenS)
elseS' (grow environment elseS)]
(in (/.branch/if @ [testS' thenS' elseS'])))
{/.#Get members inputS}
(do phase.monad
[inputS' (grow environment inputS)]
(in (/.branch/get @ [members inputS'])))
{/.#When [inputS pathS]}
(do phase.monad
[inputS' (grow environment inputS)
pathS' (grow_path (grow environment) pathS)]
(in (/.branch/when @ [inputS' pathS']))))
{/.#Loop loop}
(when loop
{/.#Scope [start initsS+ iterationS]}
(do [! phase.monad]
[initsS+' (monad.each ! (grow environment) initsS+)
iterationS' (grow environment iterationS)]
(in (/.loop/scope @ [(++ start) initsS+' iterationS'])))
{/.#Again argumentsS+}
(|> argumentsS+
(monad.each phase.monad (grow environment))
(phase#each (|>> (/.loop/again @)))))
{/.#Function function}
(when function
{/.#Abstraction [_env _arity _body]}
(do [! phase.monad]
[_env' (monad.each !
(|>> (pipe.when
[@ {/.#Reference {////reference.#Variable {////reference/variable.#Foreign register}}}]
(..find_foreign environment register)
captured
(grow environment captured)))
_env)]
(in (/.function/abstraction @ [_env' _arity _body])))
{/.#Apply funcS argsS+}
(do [! phase.monad]
[funcS (grow environment funcS)
argsS+ (monad.each ! (grow environment) argsS+)]
(in (/.function/apply @ (when funcS
(/.function/apply @ [(..self_reference @) pre_argsS+])
[(..self_reference @)
(list#composite pre_argsS+ argsS+)]
_
[funcS
argsS+]))))))
[@ {/.#Extension name argumentsS+}]
(|> argumentsS+
(monad.each phase.monad (grow environment))
(phase#each (|>> {/.#Extension name} [@])))
[@ {/.#Simple _}]
(phase#in expression)))
(def .public (abstraction @ phase environment archive bodyA)
(-> Location Phase (Environment analysis.Term)
Phase)
(do [! phase.monad]
[environment (monad.each ! (phase archive) environment)
bodyS (/.with_currying? true
(/.with_locals 2
(phase archive bodyA)))
abstraction (is (Operation Abstraction)
(when bodyS
(/.function/abstraction @ [env' down_arity' bodyS'])
(|> bodyS'
(grow env')
(of ! each (function (_ body)
[/.#environment environment
/.#arity (++ down_arity')
/.#body body])))
_
(in [/.#environment environment
/.#arity 1
/.#body bodyS])))
currying? /.currying?]
(in (<| (/.function/abstraction @)
(if currying?
abstraction
(when (//loop.optimization false 1 (list) abstraction)
{.#Some [startL initsL bodyL]}
[/.#environment environment
/.#arity (the /.#arity abstraction)
/.#body (/.loop/scope @ [startL initsL bodyL])]
{.#None}
abstraction))))))
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