From 02c2b28cd0f341fd955f9648d9174777e0b60689 Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Thu, 1 Apr 2021 23:04:54 -0700
Subject: common: common_funcs: Add Size helper function.

---
 src/common/common_funcs.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'src')

diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
index 73c8c9354..19bb021e0 100644
--- a/src/common/common_funcs.h
+++ b/src/common/common_funcs.h
@@ -136,4 +136,19 @@ namespace Common {
     return u32(a) | u32(b) << 8 | u32(c) << 16 | u32(d) << 24;
 }
 
+// std::size() does not support zero-size C arrays. We're fixing that.
+template <class C>
+constexpr auto Size(const C& c) -> decltype(c.size()) {
+    return std::size(c);
+}
+
+template <class C>
+constexpr std::size_t Size(const C& c) {
+    if constexpr (sizeof(C) == 0) {
+        return 0;
+    } else {
+        return std::size(c);
+    }
+}
+
 } // namespace Common
-- 
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