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|
(ns lang.compiler
(:refer-clojure :exclude [compile])
(:require [clojure.string :as string]
[clojure.core.match :refer [match]]
(lang [type :as &type]
[lexer :as &lexer]
[parser :as &parser]
[analyser :as &analyser])
:reload)
(:import (org.objectweb.asm Opcodes
Label
ClassWriter
MethodVisitor)))
(declare compile-form
compile)
;; [Utils/General]
(defn ^:private write-file [file data]
(with-open [stream (java.io.BufferedOutputStream. (java.io.FileOutputStream. file))]
(.write stream data)))
(def ^:private +variant-class+ "test2.Tagged")
(defmacro ^:private defcompiler [name match body]
`(defn ~name [~'*state*]
(let [~'*class-name* (:class-name ~'*state*)
~'*writer* (:writer ~'*state*)
~'*parent* (:parent ~'*state*)
~'*type* (:type (:form ~'*state*))]
(match (:form (:form ~'*state*))
~match
(do ~body
true)
_#
false))))
(defn ^:private unwrap-ident [ident]
(match ident
[::&parser/ident ?label]
?label))
(defn ^:private unwrap-tagged [ident]
(match ident
[::&parser/tagged ?tag ?data]
[?tag ?data]))
(defn ^:private ->class [class]
(string/replace class #"\." "/"))
(def ^:private ->package ->class)
(defn ^:private ->type-signature [class]
(case class
"Void" "V"
;; else
(str "L" (->class class) ";")))
(defn ^:private ->java-sig [type]
(match type
[::&type/object ?name []]
(->type-signature ?name)
[::&type/variant ?tag ?value]
(->type-signature +variant-class+)
[::&type/function ?args ?return]
(->java-sig [::&type/object "test2/Function" []])))
(defn ^:private method->sig [method]
(match method
[::&type/function ?args ?return]
(str "(" (apply str (map ->java-sig ?args)) ")"
(if (= ::&type/nothing ?return)
"V"
(->java-sig ?return)))))
;; [Utils/Compilers]
(defcompiler ^:private compile-literal
[::&analyser/literal ?literal]
(cond (instance? java.lang.Integer ?literal)
(doto *writer*
(.visitTypeInsn Opcodes/NEW (->class "java.lang.Integer"))
(.visitInsn Opcodes/DUP)
(.visitLdcInsn ?literal)
(.visitMethodInsn Opcodes/INVOKESPECIAL (->class "java.lang.Integer") "<init>" "(I)V"))
(instance? java.lang.Float ?literal)
(doto *writer*
(.visitTypeInsn Opcodes/NEW (->class "java.lang.Float"))
(.visitInsn Opcodes/DUP)
(.visitLdcInsn ?literal)
(.visitMethodInsn Opcodes/INVOKESPECIAL (->class "java.lang.Float") "<init>" "(F)V"))
(instance? java.lang.Character ?literal)
(doto *writer*
(.visitTypeInsn Opcodes/NEW (->class "java.lang.Character"))
(.visitInsn Opcodes/DUP)
(.visitLdcInsn ?literal)
(.visitMethodInsn Opcodes/INVOKESPECIAL (->class "java.lang.Character") "<init>" "(C)V"))
(instance? java.lang.Boolean ?literal)
(if ?literal
;; (.visitLdcInsn *writer* (int 1))
(.visitFieldInsn *writer* Opcodes/GETSTATIC (->class "java.lang.Boolean") "TRUE" (->type-signature "java.lang.Boolean"))
;; (.visitLdcInsn *writer* (int 0))
(.visitFieldInsn *writer* Opcodes/GETSTATIC (->class "java.lang.Boolean") "FALSE" (->type-signature "java.lang.Boolean")))
(string? ?literal)
(.visitLdcInsn *writer* ?literal)
:else
(assert false (str "[Unknown literal type] " ?literal " : " (class ?literal)))))
(defcompiler ^:private compile-tuple
[::&analyser/tuple ?elems]
(let [num-elems (count ?elems)]
(let [tuple-class (str "test2/Tuple" num-elems)]
(doto *writer*
(.visitTypeInsn Opcodes/NEW tuple-class)
(.visitInsn Opcodes/DUP)
(.visitMethodInsn Opcodes/INVOKESPECIAL tuple-class "<init>" "()V"))
(dotimes [idx num-elems]
(.visitInsn *writer* Opcodes/DUP)
(compile-form (assoc *state* :form (nth ?elems idx)))
(.visitFieldInsn *writer* Opcodes/PUTFIELD tuple-class (str "_" idx) "Ljava/lang/Object;")))))
(defcompiler ^:private compile-local
[::&analyser/local ?env ?idx]
(do ;; (prn 'LOCAL ?idx)
(doto *writer*
(.visitVarInsn Opcodes/ALOAD (int ?idx)))))
(defcompiler ^:private compile-captured
[::&analyser/captured ?scope ?captured-id ?source]
(do ;; (prn 'CAPTURED [?scope ?captured-id])
(doto *writer*
(.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD (apply str (interpose "$" ?scope)) (str "__" ?captured-id) "Ljava/lang/Object;"))))
(defcompiler ^:private compile-global
[::&analyser/global ?owner-class ?name]
(do ;; (prn 'GLOBAL ?owner-class ?name *type*)
;; (prn 'compile-global (->class (str ?owner-class "$" ?name)) "_datum")
(doto *writer*
(.visitFieldInsn Opcodes/GETSTATIC (->class (str ?owner-class "$" ?name)) "_datum" "Ljava/lang/Object;" ;; (->java-sig *type*)
))))
;; (defcompiler ^:private compile-call
;; [::&analyser/call ?fn ?args]
;; (do (prn 'compile-call (:form ?fn) ?fn ?args)
;; (doseq [arg (reverse ?args)]
;; (compile-form (assoc *state* :form arg)))
;; (match (:form ?fn)
;; [::&analyser/global ?owner-class ?fn-name]
;; (let [signature (str "(" (apply str (repeat (count ?args) "Ljava/lang/Object;")) ")" "Ljava/lang/Object;")]
;; (doto *writer*
;; (.visitMethodInsn Opcodes/INVOKESTATIC (->class ?owner-class) ?fn-name signature))))))
(defcompiler ^:private compile-call
[::&analyser/call ?fn ?args]
(do ;; (prn 'compile-call (:form ?fn) ?fn ?args)
(match (:form ?fn)
[::&analyser/global ?owner-class ?fn-name]
(let [apply-signature "(Ljava/lang/Object;)Ljava/lang/Object;"
clo-field-sig (->type-signature "java.lang.Object")
counter-sig "I"
num-args (count ?args)
signature (if (> (count ?args) 1)
(str "(" (apply str counter-sig (repeat (dec num-args) clo-field-sig)) ")" "V")
(str "()" "V"))
call-class (str (->class ?owner-class) "$" ?fn-name)]
(doto *writer*
(.visitTypeInsn Opcodes/NEW call-class)
(.visitInsn Opcodes/DUP)
(-> (doto (.visitLdcInsn (-> ?args count dec int))
;; (.visitInsn Opcodes/ICONST_0)
(-> (do (compile-form (assoc *state* :form arg)))
(->> (doseq [arg (butlast ?args)]))))
(->> (when (> (count ?args) 1))))
(.visitMethodInsn Opcodes/INVOKESPECIAL call-class "<init>" signature)
(do (compile-form (assoc *state* :form (last ?args))))
(.visitMethodInsn Opcodes/INVOKEINTERFACE "test2/Function" "apply" apply-signature)))
_
(do (compile-form (assoc *state* :form ?fn))
(let [apply-signature "(Ljava/lang/Object;)Ljava/lang/Object;"]
(doseq [arg ?args]
(compile-form (assoc *state* :form arg))
(.visitMethodInsn *writer* Opcodes/INVOKEINTERFACE "test2/Function" "apply" apply-signature))))
)))
(defcompiler ^:private compile-static-field
[::&analyser/static-field ?owner ?field]
(do ;; (prn 'compile-static-field ?owner ?field)
;; (assert false)
(doto *writer*
(.visitFieldInsn Opcodes/GETSTATIC (->class ?owner) ?field (->java-sig *type*)))
))
(defcompiler ^:private compile-dynamic-field
[::&analyser/dynamic-field ?target ?owner ?field]
(do ;; (prn 'compile-static-field ?owner ?field)
;; (assert false)
(compile-form (assoc *state* :form ?target))
(doto *writer*
(.visitFieldInsn Opcodes/GETFIELD (->class ?owner) ?field (->java-sig *type*)))
))
(defcompiler ^:private compile-static-method
[::&analyser/static-method ?owner ?method-name ?method-type ?args]
(do ;; (prn 'compile-dynamic-access ?target ?owner ?method-name ?method-type ?args)
;; (assert false)
(do (doseq [arg ?args]
(compile-form (assoc *state* :form arg)))
(doto *writer*
(.visitMethodInsn Opcodes/INVOKESTATIC (->class ?owner) ?method-name (method->sig ?method-type))
(.visitInsn Opcodes/ACONST_NULL)))
))
(defcompiler ^:private compile-dynamic-method
[::&analyser/dynamic-method ?target ?owner ?method-name ?method-type ?args]
(do ;; (prn 'compile-dynamic-access ?target ?owner ?method-name ?method-type ?args)
;; (assert false)
(do (compile-form (assoc *state* :form ?target))
(doseq [arg ?args]
(compile-form (assoc *state* :form arg)))
(doto *writer*
(.visitMethodInsn Opcodes/INVOKEVIRTUAL (->class ?owner) ?method-name (method->sig ?method-type))
(.visitInsn Opcodes/ACONST_NULL)))
))
(defcompiler ^:private compile-if
[::&analyser/if ?test ?then ?else]
(let [else-label (new Label)
end-label (new Label)]
;; (println "PRE")
(assert (compile-form (assoc *state* :form ?test)) "CAN't COMPILE TEST")
(doto *writer*
(.visitMethodInsn Opcodes/INVOKEVIRTUAL (->class "java.lang.Boolean") "booleanValue" "()Z")
(.visitJumpInsn Opcodes/IFEQ else-label))
;; (prn 'compile-if/?then (:form ?then))
(assert (compile-form (assoc *state* :form ?then)) "CAN't COMPILE THEN")
(doto *writer*
(.visitJumpInsn Opcodes/GOTO end-label)
(.visitLabel else-label))
(assert (compile-form (assoc *state* :form ?else)) "CAN't COMPILE ELSE")
(.visitLabel *writer* end-label)))
(defcompiler ^:private compile-do
[::&analyser/do ?exprs]
(do (doseq [expr (butlast ?exprs)]
(compile-form (assoc *state* :form expr))
(.visitInsn *writer* Opcodes/POP))
(compile-form (assoc *state* :form (last ?exprs)))))
(let [oclass (->class "java.lang.Object")
equals-sig (str "(" (->type-signature "java.lang.Object") ")Z")]
(defcompiler ^:private compile-case
[::&analyser/case ?variant ?branches]
(do (compile-form (assoc *state* :form ?variant))
(let [end-label (new Label)]
(doseq [[?tag ?label ?idx ?body] ?branches]
;; (prn '[?tag ?label ?idx ?body] [?tag ?label ?idx ?body])
(let [else-label (new Label)]
(doto *writer*
(.visitInsn Opcodes/DUP)
(.visitFieldInsn Opcodes/GETFIELD (->class +variant-class+) "tag" "Ljava/lang/String;")
(.visitLdcInsn ?tag)
(.visitMethodInsn Opcodes/INVOKEVIRTUAL oclass "equals" equals-sig)
(.visitJumpInsn Opcodes/IFEQ else-label))
(let [start-label (new Label)
end-label (new Label)]
(doto *writer*
(.visitInsn Opcodes/DUP)
(.visitFieldInsn Opcodes/GETFIELD (->class +variant-class+) "value" (->type-signature "java.lang.Object")))
(.visitLocalVariable *writer* ?label (->type-signature "java.lang.Object") nil start-label end-label ?idx)
(doto *writer*
(.visitVarInsn Opcodes/ASTORE ?idx)
(.visitLabel start-label)
(.visitInsn Opcodes/POP))
(compile-form (assoc *state* :form ?body))
(.visitLabel *writer* end-label))
(doto *writer*
(.visitJumpInsn Opcodes/GOTO end-label)
(.visitLabel else-label))))
(.visitLabel *writer* end-label))
)))
(defcompiler ^:private compile-let
[::&analyser/let ?idx ?label ?value ?body]
(let [start-label (new Label)
end-label (new Label)
?idx (int ?idx)]
;; (prn '(:type ?value) (:type ?value) (->java-sig (:type ?value)))
(.visitLocalVariable *writer* ?label (->java-sig (:type ?value)) nil start-label end-label ?idx)
(assert (compile-form (assoc *state* :form ?value)) "CAN't COMPILE LET-VALUE")
(doto *writer*
(.visitVarInsn Opcodes/ASTORE ?idx)
(.visitLabel start-label))
(assert (compile-form (assoc *state* :form ?body)) "CAN't COMPILE LET-BODY")
(.visitLabel *writer* end-label)))
(defn ^:private compile-method-function [writer class-name fn-name num-args body *state*]
(let [outer-class (->class class-name)
clo-field-sig (->type-signature "java.lang.Object")
counter-sig "I"
apply-signature "(Ljava/lang/Object;)Ljava/lang/Object;"
real-signature (str "(" (apply str (repeat num-args clo-field-sig)) ")" "Ljava/lang/Object;")
current-class (str outer-class "$" fn-name)
num-captured (dec num-args)
init-signature (if (not= 0 num-captured)
(str "(" (apply str counter-sig (repeat num-captured clo-field-sig)) ")" "V")
(str "()" "V"))]
(.visitInnerClass writer current-class outer-class nil (+ Opcodes/ACC_STATIC Opcodes/ACC_SYNTHETIC))
(let [=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 ["test2/Function"]))
(-> (doto (.visitField (+ Opcodes/ACC_PRIVATE Opcodes/ACC_FINAL) "_counter" counter-sig nil nil)
(.visitEnd))
(->> (when (not= 0 num-captured)))))
=impl (doto (.visitMethod =class (+ Opcodes/ACC_PUBLIC Opcodes/ACC_STATIC) "impl" real-signature nil nil)
(.visitCode)
(->> (assoc *state* :form body :writer) compile-form)
(.visitInsn Opcodes/ARETURN)
(.visitMaxs 0 0)
(.visitEnd))
=init (doto (.visitMethod =class Opcodes/ACC_PUBLIC "<init>" init-signature nil nil)
(.visitCode)
(.visitVarInsn Opcodes/ALOAD 0)
(.visitMethodInsn Opcodes/INVOKESPECIAL "java/lang/Object" "<init>" "()V")
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitVarInsn Opcodes/ILOAD 1)
(.visitFieldInsn Opcodes/PUTFIELD current-class "_counter" counter-sig)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitVarInsn Opcodes/ALOAD (+ clo_idx 2))
(.visitFieldInsn Opcodes/PUTFIELD current-class field-name clo-field-sig))
(->> (let [field-name (str "_" clo_idx)]
(doto (.visitField =class (+ Opcodes/ACC_PRIVATE Opcodes/ACC_FINAL) field-name clo-field-sig nil nil)
(.visitEnd)))
(dotimes [clo_idx num-captured]))))
(->> (when (not= 0 num-captured))))
(.visitInsn Opcodes/RETURN)
(.visitMaxs 0 0)
(.visitEnd))
=method (let [default-label (new Label)
branch-labels (for [_ (range num-captured)]
(new Label))]
(doto (.visitMethod =class Opcodes/ACC_PUBLIC "apply" apply-signature nil nil)
(.visitCode)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class "_counter" counter-sig)
(.visitTableSwitchInsn 0 (dec num-captured) default-label (into-array Label branch-labels))
(-> (doto (.visitLabel branch-label)
(.visitTypeInsn Opcodes/NEW current-class)
(.visitInsn Opcodes/DUP)
(.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class "_counter" counter-sig)
(.visitInsn Opcodes/ICONST_1)
(.visitInsn Opcodes/IADD)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class (str "_" clo_idx) clo-field-sig))
(->> (dotimes [clo_idx current-captured])))
(.visitVarInsn Opcodes/ALOAD 1)
(-> (.visitInsn Opcodes/ACONST_NULL)
(->> (dotimes [clo_idx (- (dec num-captured) current-captured)])))
(.visitMethodInsn Opcodes/INVOKESPECIAL current-class "<init>" init-signature)
;; (.visitJumpInsn Opcodes/GOTO end-label)
(.visitInsn Opcodes/ARETURN))
(->> (doseq [[branch-label current-captured] (map vector branch-labels (range (count branch-labels)))
;; :let [_ (prn '[branch-label current-captured] [branch-label current-captured])]
])))
(.visitLabel default-label)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class (str "_" clo_idx) clo-field-sig))
(->> (dotimes [clo_idx num-captured]))))
(->> (when (not= 0 num-captured))))
(.visitVarInsn Opcodes/ALOAD 1)
(.visitMethodInsn Opcodes/INVOKESTATIC current-class "impl" real-signature)
;; (.visitLabel end-label)
(.visitInsn Opcodes/ARETURN)
(.visitMaxs 0 0)
(.visitEnd)))
_ (.visitEnd =class)]
(write-file (str current-class ".class") (.toByteArray =class)))
))
(defn compile-field [writer class-name ?name body state]
(let [outer-class (->class class-name)
datum-sig (->type-signature "java.lang.Object")
current-class (str outer-class "$" ?name)]
(.visitInnerClass writer current-class outer-class nil (+ Opcodes/ACC_STATIC Opcodes/ACC_SYNTHETIC))
(let [=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 ["test2/Function"]))
(-> (.visitField (+ Opcodes/ACC_PUBLIC Opcodes/ACC_FINAL Opcodes/ACC_STATIC) "_datum" datum-sig nil nil)
(doto (.visitEnd)))
(-> (.visitMethod Opcodes/ACC_PUBLIC "<clinit>" "()V" nil nil)
(doto (.visitCode)
(->> (assoc state :form body :writer) compile-form)
(.visitFieldInsn Opcodes/PUTSTATIC current-class "_datum" datum-sig)
(.visitInsn Opcodes/RETURN)
(.visitMaxs 0 0)
(.visitEnd)))
(.visitEnd))]
(write-file (str current-class ".class") (.toByteArray =class)))
))
(defcompiler ^:private compile-def
[::&analyser/def ?form ?body]
(do ;; (prn 'compile-def ?form)
(match ?form
(?name :guard string?)
(compile-field *writer* *class-name* ?name ?body *state*)
[?name ?args]
(do ;; (prn 'compile-def `(~'def (~(symbol ?name) ~@(map symbol ?args))))
(if (= "main" ?name)
(let [signature "([Ljava/lang/String;)V"
=method (doto (.visitMethod *writer* (+ Opcodes/ACC_PUBLIC Opcodes/ACC_STATIC) ?name signature nil nil)
(.visitCode))]
;; (prn 'FN/?body ?body)
(assert (compile-form (assoc *state* :parent *writer* :writer =method :form ?body)) (str "Body couldn't compile: " (pr-str ?body)))
(doto =method
(.visitInsn Opcodes/RETURN)
(.visitMaxs 0 0)
(.visitEnd)))
(compile-method-function *writer* *class-name* ?name (count ?args) ?body *state*)))
)))
(defn ^:private captured? [form]
(match form
[::&analyser/captured ?closure-id ?captured-id ?source]
true
_
false))
(defcompiler ^:private compile-lambda
[::&analyser/lambda ?scope ?frame ?args ?body]
(let [;; _ (prn '[?scope ?frame] ?scope ?frame)
num-args (count ?args)
outer-class (->class *class-name*)
clo-field-sig (->type-signature "java.lang.Object")
counter-sig "I"
apply-signature "(Ljava/lang/Object;)Ljava/lang/Object;"
real-signature (str "(" (apply str (repeat num-args clo-field-sig)) ")" "Ljava/lang/Object;")
current-class (apply str (interpose "$" ?scope))
num-captured (dec num-args)
init-signature (str "(" (apply str (repeat (->> (:mappings ?frame)
(map (comp :form second))
(filter captured?)
count)
clo-field-sig))
(if (not= 0 num-captured)
(apply str counter-sig (repeat num-captured clo-field-sig)))
")"
"V")
;; _ (prn current-class 'init-signature init-signature)
;; _ (prn current-class 'real-signature real-signature)
=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 ["test2/Function"]))
(-> (doto (.visitField (+ Opcodes/ACC_PRIVATE Opcodes/ACC_FINAL) captured-name clo-field-sig nil nil)
(.visitEnd))
(->> (let [captured-name (str "__" ?captured-id)])
(match (:form ?captured)
[::&analyser/captured ?closure-id ?captured-id ?source])
(doseq [[?name ?captured] (:mappings ?frame)
:when (captured? (:form ?captured))])))
(-> (doto (.visitField (+ Opcodes/ACC_PRIVATE Opcodes/ACC_FINAL) "_counter" counter-sig nil nil)
(.visitEnd))
(->> (when (not= 0 num-captured)))))
=init (doto (.visitMethod =class Opcodes/ACC_PUBLIC "<init>" init-signature nil nil)
(.visitCode)
(.visitVarInsn Opcodes/ALOAD 0)
(.visitMethodInsn Opcodes/INVOKESPECIAL "java/lang/Object" "<init>" "()V")
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitVarInsn Opcodes/ALOAD (inc ?captured-id))
(.visitFieldInsn Opcodes/PUTFIELD current-class captured-name clo-field-sig))
(->> (let [captured-name (str "__" ?captured-id)])
(match (:form ?captured)
[::&analyser/captured ?closure-id ?captured-id ?source])
(doseq [[?name ?captured] (:mappings ?frame)
:when (captured? (:form ?captured))])))
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitVarInsn Opcodes/ILOAD (inc (count (:mappings ?frame))))
(.visitFieldInsn Opcodes/PUTFIELD current-class "_counter" counter-sig)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitVarInsn Opcodes/ALOAD (+ clo_idx offset))
(.visitFieldInsn Opcodes/PUTFIELD current-class field-name clo-field-sig))
(->> (let [field-name (str "_" clo_idx)]
(doto (.visitField =class (+ Opcodes/ACC_PRIVATE Opcodes/ACC_FINAL) field-name clo-field-sig nil nil)
(.visitEnd)))
(dotimes [clo_idx num-captured])
(let [offset (+ 2 (count (:mappings ?frame)))]))))
(->> (when (not= 0 num-captured))))
(.visitInsn Opcodes/RETURN)
(.visitMaxs 0 0)
(.visitEnd))
=method (let [default-label (new Label)
branch-labels (for [_ (range num-captured)]
(new Label))]
(doto (.visitMethod =class Opcodes/ACC_PUBLIC "apply" apply-signature nil nil)
(.visitCode)
(.visitVarInsn Opcodes/ALOAD 0)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class "_counter" counter-sig)
(.visitTableSwitchInsn 0 (dec num-captured) default-label (into-array Label branch-labels))
(-> (doto (.visitLabel branch-label)
(.visitTypeInsn Opcodes/NEW current-class)
(.visitInsn Opcodes/DUP)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class (str "__" capt_idx) clo-field-sig))
(->> (dotimes [capt_idx (count (:mappings ?frame))])))
(.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class "_counter" counter-sig)
(.visitInsn Opcodes/ICONST_1)
(.visitInsn Opcodes/IADD)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class (str "_" clo_idx) clo-field-sig))
(->> (dotimes [clo_idx current-captured])))
(.visitVarInsn Opcodes/ALOAD 1)
(-> (.visitInsn Opcodes/ACONST_NULL)
(->> (dotimes [clo_idx (- (dec num-captured) current-captured)])))
(.visitMethodInsn Opcodes/INVOKESPECIAL current-class "<init>" init-signature)
(.visitInsn Opcodes/ARETURN))
(->> (doseq [[branch-label current-captured] (map vector branch-labels (range (count branch-labels)))
;; :let [_ (prn '[branch-label current-captured] [branch-label current-captured])]
])))
(.visitLabel default-label)
(-> (doto (.visitVarInsn Opcodes/ALOAD 0)
(.visitFieldInsn Opcodes/GETFIELD current-class (str "_" clo_idx) clo-field-sig))
(->> (dotimes [clo_idx num-captured]))))
(->> (when (not= 0 num-captured))))
(.visitVarInsn Opcodes/ALOAD 1)
(.visitMethodInsn Opcodes/INVOKEVIRTUAL current-class "impl" real-signature)
(.visitInsn Opcodes/ARETURN)
(.visitMaxs 0 0)
(.visitEnd)))
;; _ (prn 'LAMBDA/?body ?body)
=impl (doto (.visitMethod =class Opcodes/ACC_PUBLIC "impl" real-signature nil nil)
(.visitCode)
(->> (assoc *state* :form ?body :writer)
compile-form)
(.visitInsn Opcodes/ARETURN)
(.visitMaxs 0 0)
(.visitEnd))
_ (.visitEnd =class)]
(write-file (str current-class ".class") (.toByteArray =class))
;; (apply prn 'LAMBDA ?scope ?args (->> (:mappings ?frame)
;; (map second)
;; (map :form)
;; (filter captured?)))
(doto *writer*
(.visitTypeInsn Opcodes/NEW current-class)
(.visitInsn Opcodes/DUP)
(-> (do (compile-form (assoc *state* :form ?source)))
(->> (match (:form ?captured)
[::&analyser/captured ?closure-id ?captured-id ?source])
(doseq [[?name ?captured] (:mappings ?frame)
:when (captured? (:form ?captured))])))
(-> (doto (.visitInsn Opcodes/ICONST_0)
;; (.visitInsn Opcodes/ICONST_0)
(-> (.visitInsn Opcodes/ACONST_NULL)
(->> (doseq [_ (butlast ?args)]))))
(->> (when (> (count ?args) 1))))
(.visitMethodInsn Opcodes/INVOKESPECIAL current-class "<init>" init-signature))
))
(defcompiler ^:private compile-defclass
[::&analyser/defclass [?package ?name] ?members]
(let [parent-dir (->package ?package)
=class (doto (new ClassWriter ClassWriter/COMPUTE_MAXS)
(.visit Opcodes/V1_5 (+ Opcodes/ACC_PUBLIC Opcodes/ACC_SUPER)
(str parent-dir "/" ?name) nil "java/lang/Object" nil))]
(doseq [[field props] (:fields ?members)]
(doto (.visitField =class Opcodes/ACC_PUBLIC field (->type-signature (:type props)) nil nil)
(.visitEnd)))
(doto (.visitMethod =class Opcodes/ACC_PUBLIC "<init>" "()V" nil nil)
(.visitCode)
(.visitVarInsn Opcodes/ALOAD 0)
(.visitMethodInsn Opcodes/INVOKESPECIAL "java/lang/Object" "<init>" "()V")
(.visitInsn Opcodes/RETURN)
(.visitMaxs 0 0)
(.visitEnd))
(.visitEnd =class)
(.mkdirs (java.io.File. parent-dir))
(with-open [stream (java.io.BufferedOutputStream. (java.io.FileOutputStream. (str parent-dir "/" ?name ".class")))]
(.write stream (.toByteArray =class)))))
(defcompiler ^:private compile-definterface
[::&analyser/definterface [?package ?name] ?members]
(let [parent-dir (->package ?package)
=interface (doto (new ClassWriter ClassWriter/COMPUTE_MAXS)
(.visit Opcodes/V1_5 (+ Opcodes/ACC_PUBLIC Opcodes/ACC_INTERFACE ;; Opcodes/ACC_ABSTRACT
)
(str parent-dir "/" ?name) nil "java/lang/Object" nil))]
(doseq [[?method ?props] (:methods ?members)
:let [[?args ?return] (:type ?props)
signature (str "(" (reduce str "" (map ->type-signature ?args)) ")" (->type-signature ?return))]]
(.visitMethod =interface (+ Opcodes/ACC_PUBLIC Opcodes/ACC_ABSTRACT) ?method signature nil nil))
(.visitEnd =interface)
(.mkdirs (java.io.File. parent-dir))
(with-open [stream (java.io.BufferedOutputStream. (java.io.FileOutputStream. (str parent-dir "/" ?name ".class")))]
(.write stream (.toByteArray =interface)))))
(defcompiler ^:private compile-variant
[::&analyser/variant ?tag ?value]
(let [variant-class* (->class +variant-class+)]
;; (prn 'compile-variant ?tag ?value)
(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" "Ljava/lang/String;")
(.visitInsn Opcodes/DUP))
(assert (compile-form (assoc *state* :form ?value)) (pr-str "Can't compile value: " ?value))
(doto *writer*
(.visitFieldInsn Opcodes/PUTFIELD variant-class* "value" "Ljava/lang/Object;"))
))
(defcompiler compile-import
[::&analyser/import ?class]
nil)
(defcompiler compile-require
[::&analyser/require ?file ?alias]
(let [module-name (re-find #"[^/]+$" ?file)
;; _ (prn 'module-name module-name)
source-code (slurp (str module-name ".lang"))
;; _ (prn 'source-code source-code)
tokens (&lexer/lex source-code)
;; _ (prn 'tokens tokens)
syntax (&parser/parse tokens)
;; _ (prn 'syntax syntax)
ann-syntax (&analyser/analyse module-name syntax)
;; _ (prn 'ann-syntax ann-syntax)
class-data (compile module-name ann-syntax)]
(write-file (str module-name ".class") class-data)
nil))
(let [+compilers+ [compile-literal
compile-variant
compile-tuple
compile-local
compile-captured
compile-global
compile-call
compile-static-field
compile-dynamic-field
compile-static-method
compile-dynamic-method
compile-if
compile-do
compile-case
compile-let
compile-lambda
compile-def
compile-defclass
compile-definterface
compile-import
compile-require]]
(defn ^:private compile-form [state]
;; (prn 'compile-form/state state)
(or (some #(% state) +compilers+)
(assert false (str "Can't compile: " (pr-str (:form state)))))))
;; [Interface]
(defn compile [class-name inputs]
;; (prn 'inputs inputs)
(let [=class (doto (new ClassWriter ClassWriter/COMPUTE_MAXS)
(.visit Opcodes/V1_5 (+ Opcodes/ACC_PUBLIC Opcodes/ACC_SUPER)
(->class class-name) nil "java/lang/Object" nil))
state {:class-name class-name
:writer =class
:form nil
:parent nil}]
(doseq [input inputs]
(when (not (compile-form (assoc state :form input)))
(assert false input)))
(.visitEnd =class)
(.toByteArray =class))
(comment
(-> (java.io.File. "./") .toURL vector into-array java.net.URLClassLoader. (.loadClass "test2"))
(-> (java.io.File. "./") .toURL vector into-array java.net.URLClassLoader. (.loadClass "test2.Function"))
(let [test2 (-> (java.io.File. "./") .toURL vector into-array java.net.URLClassLoader. (.loadClass "test2"))
main (first (.getDeclaredMethods test2))]
(.invoke main nil (to-array [nil])))
)
)
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