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|
(ns lux.compiler.lux
(:require (clojure [string :as string]
[set :as set]
[template :refer [do-template]])
[clojure.core.match :refer [match]]
(lux [base :as & :refer [exec return* return fail fail*
repeat-m exhaust-m try-m try-all-m map-m reduce-m
apply-m
normalize-ident]]
[type :as &type]
[lexer :as &lexer]
[parser :as &parser]
[analyser :as &analyser]
[host :as &host])
[lux.analyser.base :as &a]
(lux.compiler [base :as &&]
[lambda :as &&lambda])
:reload)
(:import (org.objectweb.asm Opcodes
Label
ClassWriter
MethodVisitor)))
;; [Utils]
(defn ^:private compile-field [compile ?name body]
(exec [*writer* &/get-writer
module-name &/get-module-name
:let [outer-class (&host/->class module-name)
datum-sig (&host/->type-signature "java.lang.Object")
current-class (&host/location (list outer-class ?name))
_ (.visitInnerClass *writer* current-class outer-class nil (+ Opcodes/ACC_STATIC Opcodes/ACC_SYNTHETIC))
=class (doto (new ClassWriter ClassWriter/COMPUTE_MAXS)
(.visit Opcodes/V1_5 (+ Opcodes/ACC_PUBLIC Opcodes/ACC_FINAL Opcodes/ACC_SUPER)
current-class nil "java/lang/Object" (into-array [(&host/->class &host/function-class)]))
(-> (.visitField (+ Opcodes/ACC_PUBLIC Opcodes/ACC_FINAL Opcodes/ACC_STATIC) "_datum" datum-sig nil nil)
(doto (.visitEnd))))]
_ (&/with-writer (.visitMethod =class Opcodes/ACC_PUBLIC "<clinit>" "()V" nil nil)
(exec [*writer* &/get-writer
:let [_ (.visitCode *writer*)]
_ (compile body)
:let [_ (doto *writer*
(.visitFieldInsn Opcodes/PUTSTATIC current-class "_datum" datum-sig)
(.visitInsn Opcodes/RETURN)
(.visitMaxs 0 0)
(.visitEnd))]]
(return nil)))
:let [_ (.visitEnd *writer*)]
_ (&&/save-class! current-class (.toByteArray =class))]
(return nil)))
;; [Resources]
(let [+class+ (&host/->class "java.lang.Boolean")
+sig+ (&host/->type-signature "java.lang.Boolean")]
(defn compile-bool [compile *type* ?value]
(exec [*writer* &/get-writer
:let [_ (.visitFieldInsn *writer* Opcodes/GETSTATIC (&host/->class "java.lang.Boolean") (if ?value "TRUE" "FALSE") (&host/->type-signature "java.lang.Boolean"))]]
(return nil))))
(do-template [<name> <class> <sig> <caster>]
(let [+class+ (&host/->class <class>)]
(defn <name> [compile *type* value]
(exec [*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]
(exec [*writer* &/get-writer
:let [_ (.visitLdcInsn *writer* ?value)]]
(return nil)))
(defn compile-tuple [compile *type* ?elems]
(exec [*writer* &/get-writer
:let [num-elems (count ?elems)
tuple-class (&host/->class (str &host/tuple-class num-elems))
_ (doto *writer*
(.visitTypeInsn Opcodes/NEW tuple-class)
(.visitInsn Opcodes/DUP)
(.visitMethodInsn Opcodes/INVOKESPECIAL tuple-class "<init>" "()V"))]
_ (map-m (fn [idx]
(exec [:let [_ (.visitInsn *writer* Opcodes/DUP)]
ret (compile (nth ?elems idx))
:let [_ (.visitFieldInsn *writer* Opcodes/PUTFIELD tuple-class (str &&/tuple-field-prefix idx) "Ljava/lang/Object;")]]
(return ret)))
(range num-elems))]
(return nil)))
(defn compile-variant [compile *type* ?tag ?value]
(exec [*writer* &/get-writer
:let [variant-class* (&host/->class &host/variant-class)
_ (doto *writer*
(.visitTypeInsn Opcodes/NEW variant-class*)
(.visitInsn Opcodes/DUP)
(.visitMethodInsn Opcodes/INVOKESPECIAL variant-class* "<init>" "()V")
(.visitInsn Opcodes/DUP)
(.visitLdcInsn ?tag)
(.visitFieldInsn Opcodes/PUTFIELD variant-class* "tag" (&host/->type-signature "java.lang.String"))
(.visitInsn Opcodes/DUP))]
_ (compile ?value)
:let [_ (.visitFieldInsn *writer* Opcodes/PUTFIELD variant-class* "value" (&host/->type-signature "java.lang.Object"))]]
(return nil)))
(defn compile-local [compile *type* ?idx]
(exec [*writer* &/get-writer
:let [_ (.visitVarInsn *writer* Opcodes/ALOAD (int ?idx))]]
(return nil)))
(defn compile-captured [compile *type* ?scope ?captured-id ?source]
(exec [*writer* &/get-writer
:let [_ (doto *writer*
(.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD
(normalize-ident ?scope)
(str &&/closure-prefix ?captured-id)
"Ljava/lang/Object;"))]]
(return nil)))
(defn compile-global [compile *type* ?owner-class ?name]
(exec [*writer* &/get-writer
:let [_ (.visitFieldInsn *writer* Opcodes/GETSTATIC (&host/->class (&host/location (list ?owner-class ?name))) "_datum" "Ljava/lang/Object;")]]
(return nil)))
(defn compile-call [compile *type* ?fn ?args]
(exec [*writer* &/get-writer
_ (compile ?fn)
_ (map-m (fn [arg]
(exec [ret (compile arg)
:let [_ (.visitMethodInsn *writer* Opcodes/INVOKEINTERFACE (&host/->class &host/function-class) "apply" &&/apply-signature)]]
(return ret)))
?args)]
(return nil)))
(defn compile-static-call [compile *type* ?needs-num ?fn ?args]
(assert false (pr-str 'compile-static-call))
(exec [*writer* &/get-writer
:let [_ (match (:form ?fn)
[::&a/global ?owner-class ?fn-name]
(let [arg-sig (&host/->type-signature "java.lang.Object")
call-class (&host/location (list ?owner-class ?fn-name))
provides-num (count ?args)]
(if (>= provides-num ?needs-num)
(let [impl-sig (str "(" (reduce str "" (repeat ?needs-num arg-sig)) ")" arg-sig)]
(doto *writer*
(-> (do (compile arg))
(->> (doseq [arg (take ?needs-num ?args)])))
(.visitMethodInsn Opcodes/INVOKESTATIC call-class "impl" impl-sig)
(-> (doto (do (compile arg))
(.visitMethodInsn Opcodes/INVOKEINTERFACE (&host/->class &host/function-class) "apply" &&/apply-signature))
(->> (doseq [arg (drop ?needs-num ?args)])))))
(let [counter-sig "I"
init-signature (str "(" (apply str counter-sig (repeat (dec ?needs-num) arg-sig)) ")" "V")]
(doto *writer*
(.visitTypeInsn Opcodes/NEW call-class)
(.visitInsn Opcodes/DUP)
(.visitLdcInsn (int provides-num))
(-> (do (compile arg))
(->> (doseq [arg ?args])))
(&&/add-nulls (dec (- ?needs-num provides-num)))
(.visitMethodInsn Opcodes/INVOKESPECIAL call-class "<init>" init-signature)))
))
)]]
(return nil)))
(defn compile-def [compile name value]
(exec [value-type (&a/expr-type value)]
(match value
[::&a/Expression ?form _]
(match ?form
[::&a/lambda ?scope ?captured ?args ?body]
(&&lambda/compile-lambda compile value-type ?scope ?captured ?args ?body true false)
_
(compile-field compile name value))
_
(fail "Can only define expressions."))))
(defn compile-self-call [compile ?scope ?assumed-args]
(prn 'compile-self-call ?scope ?assumed-args)
(exec [*writer* &/get-writer
:let [lambda-class (&host/location ?scope)]
:let [_ (doto *writer*
(.visitTypeInsn Opcodes/NEW lambda-class)
(.visitInsn Opcodes/DUP))]
:let [num-args (if (= '("lux" "fold") ?scope)
3
(count ?assumed-args))
init-signature (str "(" (if (> num-args 1)
(reduce str "I" (repeat (dec num-args) (&host/->type-signature "java.lang.Object"))))
")"
"V")
_ (do (when (> num-args 1)
(.visitInsn *writer* Opcodes/ICONST_0)
(&&/add-nulls *writer* (dec num-args)))
(.visitMethodInsn *writer* Opcodes/INVOKESPECIAL lambda-class "<init>" init-signature))]
_ (map-m (fn [arg]
(exec [ret (compile arg)
:let [_ (.visitMethodInsn *writer* Opcodes/INVOKEINTERFACE (&host/->class &host/function-class) "apply" &&/apply-signature)]]
(return ret)))
?assumed-args)]
(return nil)))
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