From 796d15378aee570675b4d0c34dd5b06c98e013dd Mon Sep 17 00:00:00 2001
From: Marshall Lochbaum <mwlochbaum@gmail.com>
Date: Fri, 26 Mar 2021 08:50:54 -0400
Subject: Switch to index-based primitive lookups for speed

---
 src/r.bqn | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

(limited to 'src')

diff --git a/src/r.bqn b/src/r.bqn
index a42f1a35..e64ee27e 100644
--- a/src/r.bqn
+++ b/src/r.bqn
@@ -2,8 +2,8 @@
 # Type Fill Log GroupLen GroupOrd _fillBy_
 # !+-×÷⋆⌊=≤≢⥊⊑↕⌜`⊘
 Decompose ← {0‿𝕩}
-Glyph ← {𝕩⋄!0}
-SetPrims ← {Decompose‿Glyph ↩ 𝕩}
+PrimInd ← {𝕩⋄!0}
+SetPrims ← {Decompose‿PrimInd ↩ 𝕩}
 
 ◶ ← {𝕨((𝕨𝔽𝕩)⊑𝕘){𝔽}𝕩}     # LIMITED to number left operand result
 ⊢ ← {𝕩}
@@ -42,6 +42,11 @@ _fold←{
 }
 ´ ← _fold
 
+_glyphLookup_ ← {
+  g←"+-×÷⋆√⌊⌈|¬∧∨<>≠=≤≥≡≢⊣⊢⥊∾≍↑↓↕«»⌽⍉/⍋⍒⊏⊑⊐⊒∊⍷⊔!˙˜˘¨⌜⁼´˝`∘○⊸⟜⌾⊘◶⎉⚇⍟%"
+  {PrimInd𝕩} ⊑ ((𝕘⊑˜·+´·×`𝕗(1-=)⌜<)⌜g)˙
+}
+
 Cell←{(𝕨⊸+⊑𝕩˙)⌜↕(≠𝕩)-𝕨}⟜≢
 
 ∾ ← {k←≠𝕨⋄k⊸≤◶⟨⊑⟜𝕨⋄-⟜k⊑𝕩˜⟩⌜↕k+≠𝕩}  # LIMITED to two vector arguments
@@ -704,12 +709,9 @@ JoinPrim ← ∾
 ⊒ ← OccurrenceCount⊘ ProgressiveIndexOf
 ⍷ ← ∊⊸/            ⊘ Find
 
-_glyphLookup_ ← {
-  (0+´·∧`𝕗≠{Glyph𝕩})⊑(∾´𝕘)˙
-}
 _lookup_ ← {
   s ← 2×↕(≠𝕘)÷2
-  (s⊏𝕘) _glyphLookup_ ((1+s)⊏𝕘)‿𝕗
+  (s⊏𝕘) _glyphLookup_ (((1+s)⊏𝕘)∾<𝕗)
 }
 Identity ← {𝕏0} ("´: Identity not found"!0˙) _lookup_ ⟨
   '+',0 , '-',0
@@ -812,7 +814,7 @@ FuncInverse ← (⊑ ⊣◶⟨
 Inverse ← Type◶(3‿1‿2/{⊢⊣𝕩IX∘≡⊢}‿FuncInverse‿("Cannot invert modifier"!0˙))
 ⁼ ↩ {𝕗 (≢∧INF˙⊸≢)◶0‿(5‿_inv_≢0‿¯2⊏Decompose∘⊢)◶⊢‿{𝕏_inv_(𝕎_invChk_𝕏)} Inverse 𝕗}
 
-structPrimClass ← {(∾𝕩)_glyphLookup_((/≍○<≠)≠¨𝕩)} ⥊¨ ⟨
+structPrimClass ← {(∾𝕩)_glyphLookup_((/∾≠)≠¨𝕩)} ⥊¨ ⟨
   '⊢'‿'⊣'‿'˜'‿'∘'‿'○'‿'⊸'‿'⟜'‿'⊘'‿'◶'
   '='‿'≠'‿'≢'
   '<'
-- 
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