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#!/usr/bin/env dbqn
# Process BQN runtime
impl ← •FLines "r.bqn"
chrs←⟨
"+-×÷⋆√⌊⌈|¬∧∨<>≠=≤≥≡≢⊣⊢⥊∾≍↑↓↕«»⌽⍉/⍋⍒⊏⊑⊐⊒∊⍷⊔!"
"˙˜˘¨⌜⁼´˝`"
"∘○⊸⟜⌾⊘◶⎉⚇⍟"
⟩
nc ← ≠¨chrs
glyphs ⇐ chr ← ∾chrs
itr ← 0⥊˜≠chr
init ← " "⊸∾¨(/⟜"_"¨nc/0‿1‿1)∾¨(nc/"FMD")∾¨(nc+´⊸↑⥊"ABC"∾⌜•a)
post ← ∾⟜" "¨/⟜"_"¨nc/0‿0‿1
names ← init∾¨'0'∾¨post
Inc ← {
i←⊑chr⊐𝕩
n←0 ⋄ itr↩{n↩1+𝕩}⌾(i⊑⊢)itr
names↩((i⊑init)∾('0'+n)∾i⊑post)⌾(i⊑⊢)names
}
# Required functionality passed in as an argument
def ← ⟨"Type","Decompose","Glyph","Fill","Log","GroupLen","GroupOrd","_fillBy_"⟩
keep ← "!+-×÷⋆⌊=≤≢⥊⊑↕⌜`⊘"
len ⇐ def+○≠keep
ki ← chr⊐keep
dt ← ⊔⟜⊒ (+´·∧`'_'=0‿¯1⊸⊏)¨ def
ns ← » ne←+`nc
kt ← ∾ (ns+≠¨dt) + ⊔⟜⊒ne⍋ki
names ↩ (⥊¨kt⊏chr)⌾(ki⊸⊏)names
E_isdef ← (3≤≠)◶⟨0,∧´⟨chr," ","←↩"⟩∊˜¨3⊸↑⟩
E_proc ← ({𝕨∘𝕩}´ def {𝕨•_R_𝕩}⟜⥊¨ chr⊏˜∾ns+dt)∘{
l←≠chr
q←≠`𝕩='"' ⋄ q∨↩≠`q<𝕩=''' ⋄ f←¬∨`q<𝕩='#'
∾ (((l×f/q)+chr⊸⊐) (≥⟜l)◶⟨⊑⟜names,⥊∘⊢⟩¨ ⊢) f/𝕩
}
E_redef ← { # handles [fmd] [←↩]
tail ← E_proc 3↓𝕩 # must use old def
Inc ⊑𝕩
(E_proc 1↑𝕩) ∾ "←" ∾ tail
}
ref ⇐ ∾∾⟜(@+10)¨ E_isdef◶E_proc‿E_redef¨ impl∾<"⟨"∾"⟩"«⥊","⊸∾˘chr
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