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Fix a bug in eval strip not actually stripping in the proper eval way - f there's a later anywhere in there, it has to desist, which is now implemented. Added do tests - we have to add support for & params, which I had forgotten, and I belive it now loops infinately because it tries to partially evaluate a recursive function!

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Nathan Braswell
2021-08-25 01:32:24 -04:00
parent 649e0107d4
commit 26e9c5a41f
2 changed files with 38 additions and 7 deletions
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21
partial_eval.kp
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@@ -263,21 +263,28 @@
;; but we'd have to be careful to also remove it on this side, and what about if it gets wrapped in another combiner? Maybe just a bad idea
;;;;
terrible_hack_strip (rec-lambda recurse (x)
(cond (val? x) (.val x)
(later? x) (.later x)
(marked_array? x) (map recurse (idx x 1))
(cond (val? x) [true (.val x)]
(later? x) [false (.later x)]
(marked_array? x) (foldl (lambda ([ok a] x) (let ([nok p] (recurse x))
[(and ok nok) (concat a [p])]))
[true []]
(idx x 1))
(comb? x) (let (c (idx x 6))
(if (= nil c) (error (str "partial eval failed: inne stripping a combinator without a real combinator (due to nil enviornment, no doubt)" x))
c))
(prim_comb? x) (idx x 2)
[true c]))
(prim_comb? x) [true (idx x 2)]
(marked_env? x) (error "Env escaped to strip!")
true (error (str "some other strip? " x))
)
)
fallback_result [comb_to_mark_map ['later [eval (.later body1) (if (= nil (.env_real eval_env)) (slice params 1 -1) (.env_real eval_env))]]]
c_body2 (cond (val? body1) (partial_eval_helper (.val body1) eval_env comb_to_mark_map imm_eval (+ 1 indent))
(later? body1) [comb_to_mark_map ['later [eval (.later body1) (if (= nil (.env_real eval_env)) (slice params 1 -1) (.env_real eval_env))]]]
(marked_array? body1) (partial_eval_helper (map terrible_hack_strip (idx body1 1)) eval_env comb_to_mark_map imm_eval (+ 1 indent))
(later? body1) fallback_result
; In the case of a later value internal to marked_array, it must finish being evaluated, or at least kept as a later
(marked_array? body1) (let ([ok sbody1] (terrible_hack_strip body1))
(if ok (partial_eval_helper sbody1 eval_env comb_to_mark_map imm_eval (+ 1 indent))
fallback_result))
(comb? body1) [comb_to_mark_map body1]
(prim_comb? body1) [comb_to_mark_map body1]
(marked_env? body1) (error "Env escaped to eval_strip!")