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|
(ns lux.analyser
(:require (clojure [template :refer [do-template]])
clojure.core.match
clojure.core.match.array
(lux [base :as & :refer [|let |do return return* |case]]
[reader :as &reader]
[parser :as &parser]
[type :as &type]
[host :as &host])
(lux.analyser [base :as &&]
[lux :as &&lux]
[module :as &&module]
[parser :as &&a-parser])
(lux.analyser.proc [common :as &&common]
[jvm :as &&jvm])))
;; [Utils]
(defn analyse-variant+ [analyse exo-type ident values]
(|do [[module tag-name] (&/normalize ident)
_ (&&module/ensure-can-see-tag module tag-name)
idx (&&module/tag-index module tag-name)
group (&&module/tag-group module tag-name)
:let [is-last? (= idx (dec (&/|length group)))]]
(if (= 1 (&/|length group))
(|do [_cursor &/cursor]
(analyse exo-type (&/T [_cursor (&/$Tuple values)])))
(|case exo-type
(&/$Var id)
(|do [? (&type/bound? id)]
(if (or ? (&&/type-tag? module tag-name))
(&&lux/analyse-variant analyse (&/$Right exo-type) idx is-last? values)
(|do [wanted-type (&&module/tag-type module tag-name)
wanted-type* (&type/instantiate-inference wanted-type)
[[variant-type variant-cursor] variant-analysis] (&&/cap-1 (&&lux/analyse-variant analyse (&/$Left wanted-type*) idx is-last? values))
_ (&type/check exo-type variant-type)]
(return (&/|list (&&/|meta exo-type variant-cursor variant-analysis))))))
_
(&&lux/analyse-variant analyse (&/$Right exo-type) idx is-last? values)
))
))
(defn ^:private just-analyse [analyser syntax]
(&type/with-var
(fn [?var]
(|do [[[?output-type ?output-cursor] ?output-term] (&&/analyse-1 analyser ?var syntax)]
(|case [?var ?output-type]
[(&/$Var ?e-id) (&/$Var ?a-id)]
(if (= ?e-id ?a-id)
(|do [=output-type (&type/clean ?var ?output-type)]
(return (&&/|meta =output-type ?output-cursor ?output-term)))
(|do [=output-type (&type/clean ?var ?var)]
(return (&&/|meta =output-type ?output-cursor ?output-term))))
[_ _]
(|do [=output-type (&type/clean ?var ?output-type)]
(return (&&/|meta =output-type ?output-cursor ?output-term))))
))))
(defn ^:private analyse-ast [optimize eval! compile-module ^"[Ljava.lang.Object;" compilers exo-type ?token]
(|let [analyse (partial analyse-ast optimize eval! compile-module compilers)
[cursor token] ?token
compile-def (aget compilers 0)
compile-program (aget compilers 1)
macro-caller (aget compilers 2)]
(|case token
;; Standard special forms
(&/$Bool ?value)
(|do [_ (&type/check exo-type &type/Bool)]
(return (&/|list (&&/|meta exo-type cursor (&&/$bool ?value)))))
(&/$Nat ?value)
(|do [_ (&type/check exo-type &type/Nat)]
(return (&/|list (&&/|meta exo-type cursor (&&/$nat ?value)))))
(&/$Int ?value)
(|do [_ (&type/check exo-type &type/Int)]
(return (&/|list (&&/|meta exo-type cursor (&&/$int ?value)))))
(&/$Rev ?value)
(|do [_ (&type/check exo-type &type/Rev)]
(return (&/|list (&&/|meta exo-type cursor (&&/$rev ?value)))))
(&/$Frac ?value)
(|do [_ (&type/check exo-type &type/Frac)]
(return (&/|list (&&/|meta exo-type cursor (&&/$frac ?value)))))
(&/$Text ?value)
(|do [_ (&type/check exo-type &type/Text)]
(return (&/|list (&&/|meta exo-type cursor (&&/$text ?value)))))
(&/$Tuple ?elems)
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-tuple analyse (&/$Right exo-type) ?elems))
(&/$Record ?elems)
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-record analyse exo-type ?elems))
(&/$Tag ?ident)
(&/with-analysis-meta cursor exo-type
(analyse-variant+ analyse exo-type ?ident &/$Nil))
(&/$Symbol ?ident)
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-symbol analyse exo-type ?ident))
(&/$Form (&/$Cons [command-meta command] parameters))
(|case command
(&/$Text ?procedure)
(case ?procedure
"lux check"
(|let [(&/$Cons ?type
(&/$Cons ?value
(&/$Nil))) parameters]
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-ann analyse eval! exo-type ?type ?value)))
"lux check type"
(|let [(&/$Cons ?value (&/$Nil)) parameters]
(analyse-ast optimize eval! compile-module compilers &type/Type ?value))
"lux coerce"
(|let [(&/$Cons ?type
(&/$Cons ?value
(&/$Nil))) parameters]
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-coerce analyse eval! exo-type ?type ?value)))
"lux def"
(|let [(&/$Cons [_ (&/$Symbol "" ?name)]
(&/$Cons ?value
(&/$Cons ?meta
(&/$Nil))
)) parameters]
(&/with-cursor cursor
(&&lux/analyse-def analyse optimize eval! compile-def ?name ?value ?meta)))
"lux program"
(|let [(&/$Cons ?program (&/$Nil)) parameters]
(&/with-cursor cursor
(&&lux/analyse-program analyse optimize compile-program ?program)))
"lux module"
(|let [(&/$Cons ?meta (&/$Nil)) parameters]
(&/with-cursor cursor
(&&lux/analyse-module analyse optimize eval! compile-module ?meta)))
"lux in-module"
(|let [(&/$Cons [_ (&/$Text ?module)] (&/$Cons ?expr (&/$Nil))) parameters]
(&/with-cursor cursor
(&/with-module ?module
(analyse exo-type ?expr))))
;; else
(&/with-analysis-meta cursor exo-type
(cond (.startsWith ^String ?procedure "jvm")
(|do [_ &/jvm-host]
(&&jvm/analyse-host analyse exo-type compilers ?procedure parameters))
:else
(&&common/analyse-proc analyse exo-type ?procedure parameters))))
(&/$Nat idx)
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-variant analyse (&/$Right exo-type) idx nil parameters))
(&/$Tag ?ident)
(&/with-analysis-meta cursor exo-type
(analyse-variant+ analyse exo-type ?ident parameters))
;; Pattern-matching syntax.
(&/$Record ?pattern-matching)
(|let [(&/$Cons ?input (&/$Nil)) parameters]
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-case analyse exo-type ?input ?pattern-matching)))
;; Function syntax.
(&/$Tuple (&/$Cons [_ (&/$Symbol "" ?self)]
(&/$Cons [_ (&/$Symbol "" ?arg)] (&/$Nil))))
(|let [(&/$Cons ?body (&/$Nil)) parameters]
(&/with-analysis-meta cursor exo-type
(&&lux/analyse-function analyse exo-type ?self ?arg ?body)))
_
(&/with-cursor cursor
(|do [=fn (just-analyse analyse (&/T [command-meta command]))]
(&&lux/analyse-apply analyse cursor exo-type macro-caller =fn parameters))))
_
(&/fail-with-loc (str "[Analyser Error] Unknown syntax: " (&/show-ast (&/T [(&/T ["" -1 -1]) token]))))
)))
;; [Resources]
(defn analyse [optimize eval! compile-module compilers]
(|do [asts &parser/parse]
(&/flat-map% (partial analyse-ast optimize eval! compile-module compilers &type/Nothing) asts)))
(defn clean-output [?var analysis]
(|do [:let [[[?output-type ?output-cursor] ?output-term] analysis]
=output-type (&type/clean ?var ?output-type)]
(return (&&/|meta =output-type ?output-cursor ?output-term))))
(defn repl-analyse [optimize eval! compile-module compilers]
(|do [asts &parser/parse]
(&/flat-map% (fn [ast]
(&type/with-var
(fn [?var]
(|do [=outputs (&/with-closure
(analyse-ast optimize eval! compile-module compilers ?var ast))]
(&/map% (partial clean-output ?var) =outputs)))))
asts)))
|
