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|
(.require
[library
[lux (.except or let with_template |>
` , ,*
UnQuote unquote unquote_macro
Spliced_UnQuote spliced_unquote spliced_unquote_macro)
[abstract
["[0]" monad (.only do)]]
[control
["[0]" maybe]
["[0]" try]]
[data
[collection
["[0]" list (.use "[1]#[0]" monoid monad)]]]]]
["[0]" // (.only)
[vocabulary (.only vocabulary)]
["/[1]" // (.use "[1]#[0]" monad)]])
(def locally
(macro (_ tokens lux)
(.let [[prelude _] (symbol ._)]
(case tokens
(list [@ {.#Symbol ["" name]}])
{.#Right [lux (list (.` ("lux in-module" (., [@ {.#Text prelude}])
(., [@ {.#Symbol [prelude name]}]))))]}
_
{.#Left ""}))))
(.with_template [<name>]
[(def <name> (..locally <name>))]
[function#composite]
[Replacement_Environment]
[realized_template]
[replacement_environment]
[symbol_short]
[tuple_list]
[text$]
[generated_symbol]
[type_definition]
[record_slots]
[text#composite]
[type#encoded]
[module_alias]
[symbol$]
[tuple$]
[zipped_2]
[multi_level_case^]
[multi_level_case$]
[type_code]
[expected_type]
[wrong_syntax_error]
[local$]
[untemplated_list]
[bit$]
[nat$]
[int$]
[rev$]
[frac$]
[one_expansion]
)
(def .public or
(pattern
(macro (_ tokens)
(case tokens
(list.partial [_ {.#Form patterns}] body branches)
(case patterns
{.#End}
(///.failure (..wrong_syntax_error (symbol ..or)))
_
(.let [pairs (.|> patterns
(list#each (function (_ pattern) (list pattern body)))
list#conjoint)]
(///#in (list#composite pairs branches))))
_
(///.failure (..wrong_syntax_error (symbol ..or)))))))
(def .public with_template
(pattern
(macro (_ tokens)
(case tokens
(list.partial [_ {.#Form (list [_ {.#Tuple bindings}]
[_ {.#Tuple templates}])}]
[_ {.#Form data}]
branches)
(case (is (Maybe (List Code))
(do maybe.monad
[bindings' (monad.each maybe.monad symbol_short bindings)
data' (monad.each maybe.monad tuple_list data)]
(.let [num_bindings (list.size bindings')]
(if (list.every? (|>> ("lux i64 =" num_bindings))
(list#each list.size data'))
(.let [apply (is (-> Replacement_Environment (List Code))
(function (_ env) (list#each (realized_template env) templates)))]
(.|> data'
(list#each (function#composite apply (replacement_environment bindings')))
list#conjoint
in))
{.#None}))))
{.#Some output}
(///#in (list#composite output branches))
{.#None}
(///.failure (..wrong_syntax_error (symbol ..with_template))))
_
(///.failure (..wrong_syntax_error (symbol ..with_template)))))))
(def .public multi
(pattern
(macro (_ tokens)
(case tokens
(list.partial [_meta {.#Form levels}] body next_branches)
(do ///.monad
[mlc (multi_level_case^ levels)
.let [initial_bind? (case mlc
[[_ {.#Symbol _}] _]
#1
_
#0)]
expected ..expected_type
g!temp (..generated_symbol "temp")]
(in (list g!temp
(.` ({{.#Some (., g!temp)}
(., g!temp)
{.#None}
(.case (., g!temp)
(.,* next_branches))}
("lux type check" {.#Apply (., (type_code expected)) Maybe}
(.case (., g!temp)
(.,* (multi_level_case$ g!temp [mlc body]))
(.,* (if initial_bind?
(list)
(list g!temp (.` {.#None})))))))))))
_
(///.failure (..wrong_syntax_error (symbol ..multi)))))))
(def .public let
(pattern
(macro (_ tokens)
(case tokens
(list.partial [_meta {.#Form (list [_ {.#Symbol ["" name]}] pattern)}] body branches)
(.let [g!whole (local$ name)]
(///#in (list.partial g!whole
(.` (case (., g!whole) (., pattern) (., body)))
branches)))
_
(///.failure (..wrong_syntax_error (symbol ..let)))))))
(def .public |>
(pattern
(macro (_ tokens)
(case tokens
(list.partial [_meta {.#Form (list [_ {.#Symbol ["" name]}] [_ {.#Tuple steps}])}] body branches)
(.let [g!name (local$ name)]
(///#in (list.partial g!name
(.` (.let [(., g!name) (.|> (., g!name) (.,* steps))]
(., body)))
branches)))
_
(///.failure (..wrong_syntax_error (symbol ..|>)))))))
(def (name$ [module name])
(-> Symbol Code)
(.` [(., (text$ module)) (., (text$ name))]))
(def (untemplated_partial_list last inits)
(-> Code (List Code) Code)
(case inits
{.#End}
last
{.#Item [init inits']}
(.` {.#Item (., init) (., (untemplated_partial_list last inits'))})))
(vocabulary
[.public Spliced_UnQuote]
[.public spliced_unquote]
[.public spliced_unquote_macro]
[.private named_spliced_unquote])
(def (untemplated_composite <tag> g!meta untemplated_pattern elems)
(-> Code Code (-> Code (Meta Code))
(-> (List Code) (Meta Code)))
(with_expansions [<default> (do ///.monad
[=elems (monad.each ///.monad untemplated_pattern elems)]
(in (.` [(., g!meta) {(., <tag>) (., (untemplated_list =elems))}])))]
(case (list.reversed elems)
{.#Item [_ {.#Form {.#Item [_ {.#Symbol global}] parameters}}]
inits}
(do ///.monad
[micro (///.try (..named_spliced_unquote global))]
(case micro
{try.#Success micro}
(do ///.monad
[output (..one_expansion ((//.function micro) parameters))
=inits (monad.each ///.monad untemplated_pattern (list.reversed inits))]
(in (.` [(., g!meta) {(., <tag>) (., (untemplated_partial_list output =inits))}])))
{try.#Failure error}
<default>))
_
<default>)))
(def .public ,*
(..spliced_unquote
(macro (_ tokens)
({{.#Item it {.#End}}
(at ///.monad in (list it))
_
(///.failure (..wrong_syntax_error (symbol ..,*)))}
tokens))))
(vocabulary
[.public UnQuote]
[.public unquote]
[.public unquote_macro]
[.private named_unquote])
(def (untemplated_pattern pattern)
(-> Code (Meta Code))
(do ///.monad
[g!meta (..generated_symbol "g!meta")]
(case pattern
(..with_template [<tag> <gen>]
[[_ {<tag> value}]
(in (.` [(., g!meta) {<tag> (., (<gen> value))}]))])
([.#Bit bit$]
[.#Nat nat$]
[.#Int int$]
[.#Rev rev$]
[.#Frac frac$]
[.#Text text$]
[.#Symbol name$])
[@composite {.#Form {.#Item [@global {.#Symbol global}] parameters}}]
(do ///.monad
[micro (///.try (..named_unquote global))]
(case micro
{try.#Success micro}
(do ///.monad
[[_ output] (..one_expansion ((//.function micro) parameters))]
(in [@composite output]))
{try.#Failure error}
(untemplated_composite (.` .#Form) g!meta untemplated_pattern (list.partial [@global {.#Symbol global}] parameters))))
(..with_template [<tag>]
[[_ {<tag> it}]
(untemplated_composite (.` <tag>) g!meta untemplated_pattern it)])
([.#Form]
[.#Variant]
[.#Tuple])
)))
(def .public `
(pattern
(macro (_ tokens)
(case tokens
(list.partial [_meta {.#Form (list template)}] body branches)
(do ///.monad
[pattern (untemplated_pattern template)]
(in (list.partial pattern body branches)))
(list template)
(do ///.monad
[pattern (untemplated_pattern template)]
(in (list pattern)))
_
(///.failure (..wrong_syntax_error (symbol ..`)))))))
(def .public ,
UnQuote
(..unquote
(macro (_ tokens)
({{.#Item it {.#End}}
(at ///.monad in (list it))
_
(///.failure (..wrong_syntax_error (symbol ..,)))}
tokens))))
|
