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(ns lang
(:require (lang [lexer :as &lexer]
[parser :as &parser]
[type :as &type]
[analyser :as &analyser]
[compiler :as &compiler])
:reload))
(defn write-file [file data]
(with-open [stream (java.io.BufferedOutputStream. (java.io.FileOutputStream. file))]
;; (prn 'write-file 'file file 'stream stream 'data data)
(.write stream data)))
(comment
;; TODO: Add macros.
;; TODO: Re-implement compiler in language.
;; TODO: Add signatures & structures OR type-classes.
;; TODO: Add type-level computations.
;; TODO: Add thunks.
;; TODO: Do tail-call optimization.
;; TODO: Adding metadata to global vars.
;; TODO: Add records.
;; TODO: throw, try, catch, finally
;; TODO: Finish implementing pattern matching.
;; TODO: Tuple8 and Tuple8X (for arbitrary-size tuples).
;; TODO: Add extra arities (apply2, apply3, ..., apply16)
;; TODO: When doing partial application, skip "apply" and just call constructor appropiatedly.
;; TODO: Add "new". Allow setting fields.
;; TODO: Don't take into account newlines in strings unless they come from \n to allow better coding.
;; TODO:
;; TODO:
;; TODO:
;; TODO:
(let [test '([:lang.parser/case-branch [:lang.parser/variant "Nil" ()]
[:lang.parser/ident "yx"]]
[:lang.parser/case-branch [:lang.parser/variant "Cons" ([:lang.parser/ident "x"] [:lang.parser/ident "xs*"])]
[:lang.parser/variant "Cons" ([:lang.parser/ident "x"] [:lang.parser/fn-call [:lang.parser/ident "++"] ([:lang.parser/ident "xs*"] [:lang.parser/ident "ys"])])]])
convert (fn [cases]
(list (reduce (fn [acc [_ shape body]]
(clojure.core.match/match shape
[::&parser/variant ?tag ?elems]
(let [=elems (map (fn [elem]
(clojure.core.match/match elem
[::&parser/ident ?ident]
[::ident ?ident]))
?elems)]
(conj acc [?tag =elems body]))))
[]
cases)))]
(convert test))
(enumerate (list (list '["Nil" [] branch-0]
'["Cons" [x xs*] branch-1])))
(let [source-code (slurp "test2.lang")
tokens (&lexer/lex source-code)
;; _ (prn 'tokens tokens)
syntax (&parser/parse tokens)
;; _ (prn 'syntax syntax)
ann-syntax (&analyser/analyse "test2" syntax)
;; _ (prn 'ann-syntax ann-syntax)
class-data (&compiler/compile "test2" ann-syntax)
;; _ (prn 'class-data class-data)
]
(write-file "test2.class" class-data))
;; jar cvf test2.jar *.class test2 && java -cp "test2.jar" test2
)
(comment
(let [data '([::&parser/case-branch [::&parser/variant "Nil" ()]
[::&parser/ident "ys"]]
[::&parser/case-branch [::&parser/variant "Cons" ([::&parser/ident "x"] [::&parser/ident "xs*"])]
[::&parser/variant "Cons" ([::&parser/ident "x"] [::&parser/fn-call [::&parser/ident "++"] ([::&parser/ident "xs*"] [::&parser/ident "ys"])])]])
;; count-registers (fn count-registers [pattern]
;; (clojure.core.match/match pattern
;; [::&parser/ident _]
;; 0
;; [::&parser/variant _ ?members]
;; (reduce + (count ?members) (map count-registers ?members))))
gen-impl (fn gen-impl [offset pattern]
(clojure.core.match/match pattern
[::&parser/ident _]
[1 [::case-bind -1 offset]]
[::&parser/variant ?tag ?members]
(let [regs+insns (mapv (fn [idx member]
(clojure.core.match/match member
[::&parser/ident _]
[1 [::case-sub-bind (+ offset (inc idx))]]))
(range (count ?members))
?members)]
[(reduce + 1 (map first regs+insns)) [::case-try ?tag (mapv second regs+insns)]])
(reduce + (count ?members) (map gen-impl ?members))))]
(reduce (fn [accum branch]
(clojure.core.match/match branch
[::&parser/case-branch ?pattern ?body]
(clojure.core.match/match ?pattern
[::&parser/variant ?tag ?members]
(let [[extra-registers impl] (gen-impl 0 ?pattern)
_ (prn 'impl extra-registers impl)
$branch (get-in accum [:paths :total])]
(-> accum
(update-in [:patterns]
(fn [patterns]
(if (contains? patterns ?tag)
(if (= (get patterns [?tag :arity]) (count ?members))
(update-in patterns [?tag :branches] conj {:test impl
:link $branch})
(assert "Pattern arity doesn't match!"))
(assoc patterns ?tag {:arity (count ?members)
:branches [{:test impl
:link $branch}]}))))
(update-in [:paths]
(fn [paths]
(-> paths
(update-in [:total] inc)
(assoc-in [:links $branch] ?body))))
(update-in [:registers] + (dec extra-registers)))))
))
{:registers 1
:patterns {}
:paths {:total 0
:links {}}}
data))
'([::&parser/case-branch [::&parser/variant "Nil" ()]
[::&parser/ident "ys"]]
[::&parser/case-branch [::&parser/variant "Cons" ([::&parser/ident "x"] [::&parser/ident "xs*"])]
[::&parser/variant "Cons" ([::&parser/ident "x"] [::&parser/fn-call [::&parser/ident "++"] ([::&parser/ident "xs*"] [::&parser/ident "ys"])])]])
'([:try "Nil" []]
[:try "Cons" [[:bind 0 1] [:bind 1 2]]])
(list '["Nil" [] branch-0]
'["Cons" [x xs*] branch-1])
[:if [% tag "Nil"]
branch-0
[:let [%0 %1]
branch-1]]
(let [enumerate (fn [xs] (map vector (range (count xs)) xs))
cases (enumerate (list (list '["Nil" [] branch-0]
'["Cons" [x xs*] branch-1])))
classify-cases (fn [[idx cases]]
[idx (reduce (fn [order [tag members branch]]
(if-let [{:keys [arity branches] :as sub-struct} (get order tag)]
(if (= arity (count members))
(update-in order [tag :branches] conj [members branch])
(assert (str "Arity doesn't match:" (count members) " != " arity)))
(assoc order tag {:arity (count members)
:branches (vector [members branch])})))
{}
cases)])
;; case->struct (fn [cases]
;; (let [struct (classify-case cases)
;; struct* (seq struct)]
;; (reduce (fn [inner [tag {:keys [arity branches]}]]
;; [:if [% tag "Nil"]
;; branch-0
;; inner])
;; (second (last struct*))
;; (butlast struct*))
;; ))
]
;; (classify-case cases)
(let [;; separated (apply map list cases)
classifications (map classify-cases cases)
classifications* (sort-by first > classifications)]
((fn [[idx struct]]
(prn idx struct)
(if-let [default (get struct nil)]
(reduce (fn [[dbinds dbranch] [tag [binds branch]]]
[:if tag
[:let binds
branch]
[:let dbinds
dbranch]])
(-> default :branches first)
(seq struct))
(let [struct* (seq struct)]
(reduce (fn [[dbinds dbranch] [tag sub-struct]]
(let [[binds branch] (-> sub-struct :branches first)]
[:if tag
[:let binds
branch]
[:let dbinds
dbranch]]))
(-> struct* last second :branches first)
(butlast struct*)))))
(first classifications*))
))
;; ([0 {"Cons" {:arity 2, :branches [[[x xs*] branch-1]]}, "Nil" {:arity 0, :branches [[[] branch-0]]}}])
;; {"Cons" {:arity 2, :branches [[[x xs*] branch-1]]},
;; "Nil" {:arity 0, :branches [[[] branch-0]]}}
;; .........................
;; (case elems
;; #Nil
;; elems
;; (#Cons head tail)
;; (case head
;; (#Cons (#Symbol "~") (#Cons unquoted #Nil))
;; (#Cons unquoted (template tail))
;; (#Cons (#Symbol "~@") (#Cons spliced #Nil))
;; (#Cons (#Symbol "++") (#Cons spliced (template tail)))
;; _
;; (#Cons head (template tail)))
;; )
;; Total registers: 3
;; [{:tag "Nil" :data [] :path path-1}
;; {:tag "Cons" :data [[:bind head] [:bind tail]] :path path-2}]
;; {path-0 [:branch "Nil" []]
;; path-1 [:branch "Cons" [[:bind head] [:bind tail]]]}
;; Total registers: 6
;; {path-0 [:branch "Cons" [[:adt "Symbol" [[:string-cmp "~"]]] [:adt "Cons" [[:bind unquoted] [:adt "Nil" []]]]]]
;; path-1 [:branch "Cons" [[:adt "Symbol" [[:string-cmp "~@"]]] [:adt "Cons" [[:bind spliced] [:adt "Nil" []]]]]]
;; path-2 [:default _]}
;; {"#default#" [:default path-2 _]
;; "Cons" [:branches [path-0 path-1]
;; [[[:adt "Symbol" [[:string-cmp "~"]]] [:adt "Cons" [[:bind unquoted] [:adt "Nil" []]]]]
;; [[:adt "Symbol" [[:string-cmp "~@"]]] [:adt "Cons" [[:bind spliced] [:adt "Nil" []]]]]]]}
;; [:branches]
;; (case elems
;; #Nil
;; elems
;; (#Cons (list (' ~) unquoted) tail)
;; (list* unquoted (template tail))
;; (#Cons (list (' ~@) spliced) tail)
;; (list* "++" spliced (template tail))
;; _
;; (#Cons head (template tail))
;; )
;; [{:tag "Nil" :data [] :path path-1}
;; {:tag "Cons" :data [[:bind head] [:bind tail]] :path path-2}]
;; [[{:tag "Cons" :data [%0 %1] :path nil
;; :sub-cases [[{:tag "Symbol" :data [[:string-cmp "~"]] :path path-1}
;; {:tag "Symbol" :data [[:string-cmp "~@"]] :path path-2}]
;; [{:tag "Cons" :data [[:bind unquoted] {:tag "Nil" :data []}] :path path-1}
;; {:tag "Cons" :data [[:bind spliced] {:tag "Nil" :data []}] :path path-2}]]}
;; {:tag ::default :path path-3}]]
;; [[["Cons" ["Symbol" "~"] ["Cons" unquoted ["Nil"]]]
;; ["Cons" ["Symbol" "~@"] ["Cons" spliced ["Nil"]]]
;; _]]
;; [[["Symbol" "~"]
;; ["Symbol" "~@"]]
;; [["Cons" unquoted ["Nil"]]
;; ["Cons" spliced ["Nil"]]]]
;; (if (= "Cons" (:: % tag))
;; (let [%0 (:: % _0)
;; %1 (:: % _1)]
;; (if (= "Symbol" (:: %0 tag))
;; (let [%0|0 (:: %0 _0)]
;; (if (= "~" %0|0)
;; (if (= "Cons" (:: %1 tag))
;; (let [%1|0 (:: %1 _0)
;; %1|1 (:: %1 _1)]
;; (if (= "Nil" (:: %1|1 tag))
;; (let [unquoted %1|0]
;; <path-1>)
;; <path-3>))
;; <path-3>)
;; (if (= "@~" %0|0)
;; (if (= "Cons" (:: %1 tag))
;; (let [%1|0 (:: %1 _0)
;; %1|1 (:: %1 _1)]
;; (if (= "Nil" (:: %1|1 tag))
;; (let [unquoted %1|0]
;; <path-2>)
;; <path-3>))
;; <path-3>)
;; <path-3>)))
;; <path-3>))
;; <path-3>)
;; (list (list '["Nil" [] ...]
;; '["Cons" [head tail] ...]))
;; (list (list '["Cons" [["Symbol" ["~"]] ["Cons" [unquoted ["Nil" []]]]] ...]
;; '["Cons" [["Symbol" ["~@"]] ["Cons" [spliced ["Nil" []]]]] ...]))
)
|
