From 1d9d0d1f54800b4801df4c8f5af7e82dc88fcdbc Mon Sep 17 00:00:00 2001
From: Mark Spanbroek <mark@spanbroek.net>
Date: Tue, 24 Oct 2023 14:21:37 +0200
Subject: [PATCH] Perform string to array conversion at compiletime

---
 poseidon2.nim            | 4 ++--
 poseidon2/roundconst.nim | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/poseidon2.nim b/poseidon2.nim
index b07a854..3bef275 100644
--- a/poseidon2.nim
+++ b/poseidon2.nim
@@ -13,8 +13,8 @@ import poseidon2/roundconst
 
 let zero : F = getZero()
 
-let externalRoundConst : array[24, F] = arrayFromHex( externalRoundConstStr )
-let internalRoundConst : array[56, F] = arrayFromHex( internalRoundConstStr )
+const externalRoundConst : array[24, F] = arrayFromHex( externalRoundConstStr )
+const internalRoundConst : array[56, F] = arrayFromHex( internalRoundConstStr )
 
 #-------------------------------------------------------------------------------
 
diff --git a/poseidon2/roundconst.nim b/poseidon2/roundconst.nim
index 0571a71..15e43ec 100644
--- a/poseidon2/roundconst.nim
+++ b/poseidon2/roundconst.nim
@@ -2,7 +2,7 @@
 
 #-------------------------------------------------------------------------------
 
-let externalRoundConstStr* : array[24, string] =
+const externalRoundConstStr* : array[24, string] =
   [ "0x2c4c51fd1bb9567c27e99f5712b49e0574178b41b6f0a476cddc41d242cf2b43" ,
     "0x1c5f8d18acb9c61ec6fcbfcda5356f1b3fdee7dc22c99a5b73a2750e5b054104" ,
     "0x2d3c1988b4541e4c045595b8d574e98a7c2820314a82e67a4e380f1c4541ba90" ,
@@ -38,7 +38,7 @@ let externalRoundConstStr* : array[24, string] =
 
 #-------------------------------------------------------------------------------
 
-let internalRoundConstStr* : array[56, string] =
+const internalRoundConstStr* : array[56, string] =
   [ "0x15ce7e5ae220e8623a40b3a3b22d441eff0c9be1ae1d32f1b777af84eea7e38c" ,
     "0x1bf60ac8bfff0f631983c93e218ca0d4a4059c254b4299b1d9984a07edccfaf0" ,
     "0x0fab0c9387cb2bec9dc11b2951088b9e1e1d2978542fc131f74a8f8fdac95b40" ,