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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.host.generics
(:require (clojure [template :refer [do-template]])
clojure.core.match
clojure.core.match.array
(lux [base :as & :refer [|do return* return fail fail* |let |case]]
[host :as &host])))
(defn super-class-name [super]
"(-> GenericSuperClassDecl Text)"
(|let [[super-name super-params] super]
super-name))
(defn gclass->signature [super]
"(-> GenericClass Text)"
(|case super
(&/$GTypeVar name)
(str "T" name ";")
(&/$GClass name params)
(|let [params-sigs (->> params (&/|map gclass->signature) (&/|interpose " ") (&/fold str ""))]
(str "L" (&host/->class name) "<" params-sigs ">" ";"))))
(defn gsuper-decl->signature [super]
"(-> GenericSuperClassDecl Text)"
(|let [[super-name super-params] super
params-sigs (->> super-params (&/|map gclass->signature) (&/|interpose " ") (&/fold str ""))]
(str "L" (&host/->class super-name) "<" params-sigs ">" ";")))
(defn gclass-decl->signature [class-decl supers]
"(-> GenericClassDecl (List GenericSuperClassDecl) Text)"
(|let [[class-name class-vars] class-decl
vars-section (str "<" (->> class-vars (&/|interpose " ") (&/fold str "")) ">")
super-section (->> (&/|map gsuper-decl->signature supers) (&/|interpose " ") (&/fold str ""))]
(str vars-section super-section)))
(let [object-simple-signature (&host/->type-signature "java.lang.Object")]
(defn gclass->simple-signature [gclass]
"(-> GenericClass Text)"
(|case gclass
(&/$GTypeVar name)
object-simple-signature
(&/$GClass name params)
(&host/->type-signature name))))
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