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(ns lux.analyser.def
(:require (clojure [template :refer [do-template]])
[clojure.core.match :as M :refer [matchv]]
clojure.core.match.array
(lux [base :as & :refer [|do return return* fail]])
[lux.analyser.base :as &&]))
;; [Exports]
(def init-module
(&/R "lux;defs" (&/|table)
"lux;macros" (&/|table)))
(do-template [<name> <category>]
(defn <name> [module name]
(fn [state]
(return* state
(->> state (&/get$ "lux;modules") (&/|get module) (&/get$ <category>) (&/|contains? name)))))
defined? "lux;defs"
macro? "lux;macros"
)
(defn declare-macro [module name]
(fn [state]
(return* (&/update$ "lux;modules" (fn [ms] (&/|update module (fn [m] (&/update$ "lux;macros" #(&/|put name true %) m)) ms)) state)
nil)))
(defn define [module name type]
(fn [state]
(let [full-name (str module &/+name-separator+ name)
bound (&/V "Expression" (&/T (&/V "global" (&/T module name)) type))]
(return* (->> state
(&/update$ "lux;modules" (fn [ms] (&/|update module (fn [m] (&/update$ "lux;defs" #(&/|put name type %) m)) ms)))
(&/update$ "lux;global-env" #(matchv ::M/objects [%]
[["lux;None" _]]
(assert false)
[["lux;Some" table]]
(&/V "lux;Some" (&/update$ "lux;locals" (fn [locals]
(&/update$ "lux;mappings" (fn [mappings]
(&/|merge (&/|table full-name bound, name bound)
mappings))
locals))
table))
)))
nil))))
(defn module-exists? [name]
(fn [state]
(return* state
(->> state (&/get$ "lux;modules") (&/|contains? name)))))
(defn unalias-module [name]
(fn [state]
(if-let [real-name (->> state (&/get$ "lux;module-aliases") (&/|get name))]
(return* state real-name)
(fail "Unknown alias."))))
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