From 267c6f2ac71f92999e969232431ba04678e7437e Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 15 Apr 2024 07:54:39 +0200
Subject: Adding upstream version 4:24.2.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 include/o3tl/concepts.hxx | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 include/o3tl/concepts.hxx

(limited to 'include/o3tl/concepts.hxx')

diff --git a/include/o3tl/concepts.hxx b/include/o3tl/concepts.hxx
new file mode 100644
index 0000000000..261d063ebc
--- /dev/null
+++ b/include/o3tl/concepts.hxx
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <concepts>
+
+// LLVM 12 libc++ only provides a bare-bones <concepts> that lacks most of its C++20 content, so
+// replicate here fore now what we need:
+
+#if defined __cpp_lib_concepts
+
+namespace o3tl
+{
+using std::integral;
+using std::signed_integral;
+using std::unsigned_integral;
+}
+
+#else
+
+#include <type_traits>
+
+namespace o3tl
+{
+// Taken from the C++20 spec:
+
+template <typename T> concept integral = std::is_integral_v<T>;
+
+template <typename T> concept signed_integral = integral<T>&& std::is_signed_v<T>;
+
+template <typename T> concept unsigned_integral = integral<T> && !signed_integral<T>;
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
-- 
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