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;; Copyright (c) Eduardo Julian. All rights reserved.
;; 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 http://mozilla.org/MPL/2.0/.
(ns lux.compiler.type
(:require [clojure.template :refer [do-template]]
clojure.core.match
clojure.core.match.array
(lux [base :as & :refer [|do return* return fail fail* |let |case]]
[type :as &type])
[lux.analyser.base :as &a]))
;; [Utils]
(defn ^:private variant$ [tag body]
"(-> Int Analysis Analysis)"
(let [tag-meta (meta tag)]
(&a/|meta &/$VoidT &/empty-cursor
(&a/$variant (::&/idx tag-meta) (::&/is-last? tag-meta) body))))
(defn ^:private tuple$ [members]
"(-> (List Analysis) Analysis)"
(&a/|meta &/$VoidT &/empty-cursor
(&a/$tuple members)))
(do-template [<name> <tag> <doc>]
(defn <name> [value]
<doc>
(&a/|meta &/$VoidT &/empty-cursor
(<tag> value)))
^:private bool$ &a/$bool "(-> Bool Analysis)"
^:private int$ &a/$int "(-> Int Analysis)"
^:private real$ &a/$real "(-> Real Analysis)"
^:private char$ &a/$char "(-> Char Analysis)"
^:private text$ &a/$text "(-> Text Analysis)"
)
(defn ^:private ident$ [value]
"(-> Ident Analysis)"
(|let [[p n] value]
(tuple$ (&/|list (text$ p) (text$ n)))))
(def ^:private $Nil
"Analysis"
(variant$ #'&/$Nil (tuple$ &/$Nil)))
(defn ^:private Cons$ [head tail]
"(-> Analysis Analysis Analysis)"
(variant$ #'&/$Cons (tuple$ (&/|list head tail))))
(defn ^:private List$ [elems]
(&/fold (fn [tail head]
(Cons$ head tail))
$Nil
(&/|reverse elems)))
;; [Exports]
(defn type->analysis [type]
"(-> Type Analysis)"
(|case type
(&/$DataT class params)
(variant$ #'&/$DataT (tuple$ (&/|list (text$ class)
(List$ (&/|map type->analysis params)))))
(&/$VoidT)
(variant$ #'&/$VoidT (tuple$ (&/|list)))
(&/$UnitT)
(variant$ #'&/$UnitT (tuple$ (&/|list)))
(&/$ProdT left right)
(variant$ #'&/$ProdT (tuple$ (&/|list (type->analysis left) (type->analysis right))))
(&/$SumT left right)
(variant$ #'&/$SumT (tuple$ (&/|list (type->analysis left) (type->analysis right))))
(&/$LambdaT input output)
(variant$ #'&/$LambdaT (tuple$ (&/|list (type->analysis input) (type->analysis output))))
(&/$UnivQ env body)
(variant$ #'&/$UnivQ
(tuple$ (&/|list (List$ (&/|map type->analysis env))
(type->analysis body))))
(&/$BoundT idx)
(variant$ #'&/$BoundT (int$ idx))
(&/$AppT fun arg)
(variant$ #'&/$AppT (tuple$ (&/|list (type->analysis fun) (type->analysis arg))))
(&/$NamedT [module name] type*)
(variant$ #'&/$NamedT (tuple$ (&/|list (tuple$ (&/|list (text$ module) (text$ name)))
(type->analysis type*))))
_
(assert false (prn 'type->analysis (&/adt->text type)))
))
(defn ^:private defmetavalue->analysis [dmv]
"(-> DefMetaValue Analysis)"
(|case dmv
(&/$BoolM value)
(variant$ #'&/$BoolM (bool$ value))
(&/$IntM value)
(variant$ #'&/$IntM (int$ value))
(&/$RealM value)
(variant$ #'&/$RealM (real$ value))
(&/$CharM value)
(variant$ #'&/$CharM (char$ value))
(&/$TextM value)
(variant$ #'&/$TextM (text$ value))
(&/$IdentM value)
(variant$ #'&/$IdentM (ident$ value))
(&/$ListM xs)
(variant$ #'&/$ListM (List$ (&/|map defmetavalue->analysis xs)))
(&/$DictM kvs)
(variant$ #'&/$DictM
(List$ (&/|map (fn [kv]
(|let [[k v] kv]
(tuple$ (&/|list (text$ k)
(defmetavalue->analysis v)))))
kvs)))
_
(assert false (prn 'defmetavalue->analysis (&/adt->text dmv)))
))
(defn defmeta->analysis [xs]
"(-> DefMeta Analysis)"
(List$ (&/|map (fn [kv]
(|let [[k v] kv]
(tuple$ (&/|list (ident$ k)
(defmetavalue->analysis v)))))
xs)))
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