From c6fad5f3b20aa132676df38a7bdeb2d2a2d8f46d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benjamin=20St=C3=BCrz?= <benni@stuerz.xyz>
Date: Sun, 17 Jul 2022 20:24:03 +0200
Subject: [PATCH] Added std::source_location overload

---
 safmat.hpp | 17 ++++++++++++++++-
 test.cpp   |  3 +++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/safmat.hpp b/safmat.hpp
index 3477dfc..7c72fdd 100644
--- a/safmat.hpp
+++ b/safmat.hpp
@@ -26,6 +26,7 @@
 #include <variant>
 #include <utility>
 #include <cstring>
+#include <version>
 #include <string>
 #include <memory>
 #include <limits>
@@ -34,6 +35,10 @@
 #include <array>
 #include <span>
 
+#if __cpp_lib_source_location >= 201907L
+# include <source_location>
+#endif
+
 // Enable support for std::ostream Output (default=disabled).
 #ifndef  SAFMAT_OUT_OSTREAM
 # define SAFMAT_OUT_OSTREAM 0
@@ -84,7 +89,7 @@ namespace safmat::io {
         struct OutputImpl : OutputBase {
             T *out;
 
-            OutputImpl(T *out) : out(out) {}
+            OutputImpl(T *out) noexcept : out(out) {}
 
             void write(std::string_view s) const override {
                 OutputAdapter<T>::write(out, s);
@@ -778,6 +783,16 @@ namespace safmat {
             out.write(']');
         }
     };
+
+#if __cpp_lib_source_location >= 201907L
+    template<>
+    struct Formatter<std::source_location> : internal::PaddedFormatter {
+	void format_to(FormatContext &ctx, const std::source_location &loc) {
+	    auto &out = ctx.out;
+	    safmat::format_to(out, "{}:{}:{}", loc.file_name(), loc.line(), loc.column());
+	}
+    };
+#endif
 }
 
 #endif // FILE_SAFMAT_HPP
diff --git a/test.cpp b/test.cpp
index 0d4a193..0d5b79f 100644
--- a/test.cpp
+++ b/test.cpp
@@ -31,6 +31,9 @@ int main() {
     using namespace std::literals;
     using namespace safmat;
 
+    auto loc = std::source_location::current();
+    println("loc = {}", loc);
+
     try {
         println("'{:x^100}'", "Hello");
         println("Hello {:0{}}", 42, 100);