From 3d36f415ba5007fe818db043a4822a60848ea140 Mon Sep 17 00:00:00 2001
From: Vasilii Rogin <vasya@rogin.ru>
Date: Sun, 14 May 2023 21:56:31 +0300
Subject: [PATCH] Add comment

---
 src/sfall_arrays.cc | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/sfall_arrays.cc b/src/sfall_arrays.cc
index bc93d8a..b7adc7f 100644
--- a/src/sfall_arrays.cc
+++ b/src/sfall_arrays.cc
@@ -53,6 +53,17 @@ enum class ArrayElementType {
     POINTER
 };
 
+/**
+ * This is mostly the same as ProgramValue but it owns strings.
+ * 
+ * This is done because when we pop dynamic string element from 
+ * the stack we decrease ref count for this string and it memory
+ * can be freed.
+ * 
+ * In theory arrays can be shared between programs so we also 
+ * have to copy static strings.
+ * 
+ */
 class ArrayElement {
 private:
     ArrayElementType type;
@@ -67,7 +78,7 @@ public:
     ArrayElement() {
         // todo
     };
-    
+
     // TODO: Remove all other constructors
 
     ArrayElement(ProgramValue programValue, Program* program)