From a9cf9fa3599b2045941d154dc91aba5a45beabb7 Mon Sep 17 00:00:00 2001
From: Thomas Alexander <thomasalexander2718@gmail.com>
Date: Tue, 26 Mar 2024 08:23:28 -0300
Subject: [PATCH] Fix debug build on OSX (#33)

Closes #32. Fixes iteration of tokens on OSX.
---
 include/qasm/AST/ASTBase.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/qasm/AST/ASTBase.h b/include/qasm/AST/ASTBase.h
index e11dc49..4f4689e 100644
--- a/include/qasm/AST/ASTBase.h
+++ b/include/qasm/AST/ASTBase.h
@@ -201,12 +201,10 @@ class ASTTokenFactory {
   }
 
   static const ASTToken *GetPreviousToken() {
-    std::map<uint32_t, ASTToken *>::const_reverse_iterator MRI = TFM.rbegin();
-    if (MRI == TFM.rend())
+    if (TFM.empty())
       return nullptr;
 
-    --MRI;
-    return MRI == TFM.rend() ? nullptr : (*MRI).second;
+    return std::prev(TFM.end())->second;
   }
 
   static uint32_t GetCurrentIndex() { return TIX; }