From 7774da51c532006da82617ce307d136897693280 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom@tomsmeding.com>
Date: Sat, 23 Nov 2024 12:12:03 +0100
Subject: Prepare for introducing top-level args in accum mod

---
 src/CHAD/Heuristics.hs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 src/CHAD/Heuristics.hs

(limited to 'src/CHAD/Heuristics.hs')

diff --git a/src/CHAD/Heuristics.hs b/src/CHAD/Heuristics.hs
new file mode 100644
index 0000000..6ab8222
--- /dev/null
+++ b/src/CHAD/Heuristics.hs
@@ -0,0 +1,14 @@
+{-# LANGUAGE GADTs #-}
+module CHAD.Heuristics where
+
+import AST
+
+
+hasArrays :: STy t' -> Bool
+hasArrays STNil = False
+hasArrays (STPair a b) = hasArrays a || hasArrays b
+hasArrays (STEither a b) = hasArrays a || hasArrays b
+hasArrays (STMaybe t) = hasArrays t
+hasArrays STArr{} = True
+hasArrays STScal{} = False
+hasArrays STAccum{} = error "Accumulators not allowed in source program"
-- 
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