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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.lux
(:require (clojure [string :as string]
[set :as set]
[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]
[lexer :as &lexer]
[parser :as &parser]
[analyser :as &analyser]
[host :as &host])
(lux.analyser [base :as &a]
[module :as &a-module])
(lux.compiler [base :as &&]
[lambda :as &&lambda]
[type :as &&type]))
(:import (org.objectweb.asm Opcodes
Label
ClassWriter
MethodVisitor)))
;; [Exports]
(defn compile-bool [compile *type* ?value]
(|do [^MethodVisitor *writer* &/get-writer
:let [_ (.visitFieldInsn *writer* Opcodes/GETSTATIC "java/lang/Boolean" (if ?value "TRUE" "FALSE") "Ljava/lang/Boolean;")]]
(return nil)))
(do-template [<name> <class> <sig> <caster>]
(defn <name> [compile *type* value]
(|do [^MethodVisitor *writer* &/get-writer
:let [_ (doto *writer*
(.visitTypeInsn Opcodes/NEW <class>)
(.visitInsn Opcodes/DUP)
(.visitLdcInsn (<caster> value))
(.visitMethodInsn Opcodes/INVOKESPECIAL <class> "<init>" <sig>))]]
(return nil)))
compile-int "java/lang/Long" "(J)V" long
compile-real "java/lang/Double" "(D)V" double
compile-char "java/lang/Character" "(C)V" char
)
(defn compile-text [compile *type* ?value]
(|do [^MethodVisitor *writer* &/get-writer
:let [_ (.visitLdcInsn *writer* ?value)]]
(return nil)))
(defn compile-tuple [compile *type* ?elems]
(|do [^MethodVisitor *writer* &/get-writer
:let [num-elems (&/|length ?elems)
_ (doto *writer*
(.visitLdcInsn (int num-elems))
(.visitTypeInsn Opcodes/ANEWARRAY "java/lang/Object"))]
_ (&/map2% (fn [idx elem]
(|do [:let [_ (doto *writer*
(.visitInsn Opcodes/DUP)
(.visitLdcInsn (int idx)))]
ret (compile elem)
:let [_ (.visitInsn *writer* Opcodes/AASTORE)]]
(return ret)))
(&/|range num-elems) ?elems)]
(return nil)))
(defn compile-variant [compile *type* ?tag ?value]
;; (prn 'compile-variant ?tag (class ?tag))
(|do [^MethodVisitor *writer* &/get-writer
:let [_ (doto *writer*
(.visitLdcInsn (int 2))
(.visitTypeInsn Opcodes/ANEWARRAY "java/lang/Object")
(.visitInsn Opcodes/DUP)
(.visitLdcInsn (int 0))
(.visitLdcInsn ?tag)
(&&/wrap-long)
(.visitInsn Opcodes/AASTORE)
(.visitInsn Opcodes/DUP)
(.visitLdcInsn (int 1)))]
_ (compile ?value)
:let [_ (.visitInsn *writer* Opcodes/AASTORE)]]
(return nil)))
(defn compile-local [compile *type* ?idx]
(|do [^MethodVisitor *writer* &/get-writer
:let [_ (.visitVarInsn *writer* Opcodes/ALOAD (int ?idx))]]
(return nil)))
(defn compile-captured [compile *type* ?scope ?captured-id ?source]
(|do [^MethodVisitor *writer* &/get-writer
:let [_ (doto *writer*
(.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD
(str (&host/->module-class (&/|head ?scope)) "/" (&host/location (&/|tail ?scope)))
(str &&/closure-prefix ?captured-id)
"Ljava/lang/Object;"))]]
(return nil)))
(defn compile-global [compile *type* ?owner-class ?name]
(|do [^MethodVisitor *writer* &/get-writer
:let [_ (.visitFieldInsn *writer* Opcodes/GETSTATIC (str (&host/->module-class ?owner-class) "/" (&/normalize-name ?name)) &/datum-field "Ljava/lang/Object;")]]
(return nil)))
(defn compile-apply [compile *type* ?fn ?args]
(|do [^MethodVisitor *writer* &/get-writer
_ (compile ?fn)
_ (&/map% (fn [?arg]
(|do [=arg (compile ?arg)
:let [_ (.visitMethodInsn *writer* Opcodes/INVOKEINTERFACE &&/function-class "apply" &&/apply-signature)]]
(return =arg)))
?args)]
(return nil)))
(defn ^:private compile-def-type [compile current-class ?body def-type]
(|do [^MethodVisitor **writer** &/get-writer]
(|case def-type
"type"
(|do [:let [;; ?type* (&&type/->analysis ?type)
_ (doto **writer**
;; Tail: Begin
(.visitLdcInsn (int 2)) ;; S
(.visitTypeInsn Opcodes/ANEWARRAY "java/lang/Object") ;; V
(.visitInsn Opcodes/DUP) ;; VV
(.visitLdcInsn (int 0)) ;; VVI
(.visitLdcInsn &/$TypeD) ;; VVIT
(&&/wrap-long)
(.visitInsn Opcodes/AASTORE) ;; V
(.visitInsn Opcodes/DUP) ;; VV
(.visitLdcInsn (int 1)) ;; VVI
(.visitFieldInsn Opcodes/GETSTATIC current-class &/datum-field "Ljava/lang/Object;")
;; (.visitInsn Opcodes/ACONST_NULL) ;; VVIN
(.visitInsn Opcodes/AASTORE) ;; V
)]
;; _ (compile ?type*)
;; :let [_ (.visitInsn **writer** Opcodes/AASTORE)]
]
(return nil))
"value"
(|let [;; _ (prn '?body (aget ?body 0) (aget ?body 1 0))
?def-type (|case ?body
[(&a/$ann ?def-value ?type-expr) ?def-type]
?type-expr
[?def-value ?def-type]
(&&type/->analysis ?def-type))]
(|do [:let [_ (doto **writer**
(.visitLdcInsn (int 2)) ;; S
(.visitTypeInsn Opcodes/ANEWARRAY "java/lang/Object") ;; V
(.visitInsn Opcodes/DUP) ;; VV
(.visitLdcInsn (int 0)) ;; VVI
(.visitLdcInsn &/$ValueD) ;; VVIT
(&&/wrap-long)
(.visitInsn Opcodes/AASTORE) ;; V
(.visitInsn Opcodes/DUP) ;; VV
(.visitLdcInsn (int 1)) ;; VVI
)]
:let [_ (doto **writer**
(.visitLdcInsn (int 2)) ;; S
(.visitTypeInsn Opcodes/ANEWARRAY "java/lang/Object") ;; V
(.visitInsn Opcodes/DUP) ;; VV
(.visitLdcInsn (int 0)) ;; VVI
)]
_ (compile ?def-type)
:let [_ (.visitInsn **writer** Opcodes/AASTORE)]
:let [_ (doto **writer**
(.visitInsn Opcodes/DUP) ;; VV
(.visitLdcInsn (int 1)) ;; VVI
(.visitFieldInsn Opcodes/GETSTATIC current-class &/datum-field "Ljava/lang/Object;")
(.visitInsn Opcodes/AASTORE))]
:let [_ (.visitInsn **writer** Opcodes/AASTORE)]]
(return nil)))
)))
(let [class-flags (+ Opcodes/ACC_PUBLIC Opcodes/ACC_FINAL Opcodes/ACC_SUPER)
field-flags (+ Opcodes/ACC_PUBLIC Opcodes/ACC_FINAL Opcodes/ACC_STATIC)]
(defn compile-def [compile ?name ?body]
(|do [:let [=value-type (&a/expr-type* ?body)
def-type (cond (&type/type= &type/Type =value-type)
"type"
:else
"value")]
^ClassWriter *writer* &/get-writer
module-name &/get-module-name
:let [datum-sig "Ljava/lang/Object;"
def-name (&/normalize-name ?name)
current-class (str (&host/->module-class module-name) "/" def-name)
=class (doto (new ClassWriter ClassWriter/COMPUTE_MAXS)
(.visit Opcodes/V1_5 class-flags
current-class nil "java/lang/Object" (into-array [&&/function-class]))
(-> (.visitField field-flags &/name-field "Ljava/lang/String;" nil ?name)
(doto (.visitEnd)))
(-> (.visitField field-flags &/datum-field datum-sig nil nil)
(doto (.visitEnd)))
(-> (.visitField field-flags &/meta-field datum-sig nil nil)
(doto (.visitEnd))))]
_ (&/with-writer (.visitMethod =class Opcodes/ACC_PUBLIC "<clinit>" "()V" nil nil)
(|do [^MethodVisitor **writer** &/get-writer
:let [_ (.visitCode **writer**)]
_ (compile ?body)
:let [_ (.visitFieldInsn **writer** Opcodes/PUTSTATIC current-class &/datum-field datum-sig)]
_ (compile-def-type compile current-class ?body def-type)
:let [_ (.visitFieldInsn **writer** Opcodes/PUTSTATIC current-class &/meta-field datum-sig)]
:let [_ (doto **writer**
(.visitInsn Opcodes/RETURN)
(.visitMaxs 0 0)
(.visitEnd))]]
(return nil)))
:let [_ (.visitEnd *writer*)]
_ (&&/save-class! def-name (.toByteArray =class))
class-loader &/loader
:let [def-class (&&/load-class! class-loader (&host/->class-name current-class))]
_ (&a-module/define module-name ?name (-> def-class (.getField &/meta-field) (.get nil)) =value-type)]
(return nil))))
(defn compile-ann [compile *type* ?value-ex ?type-ex]
(compile ?value-ex))
(defn compile-declare-macro [compile module name]
(|do [_ (&a-module/declare-macro module name)]
(return nil)))
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