logging/log.h: move enum class formatter to a separate file ...

... to common/logging/formatter.h

src/common/CMakeLists.txt

@@ -85,6 +85,7 @@ add_library(common STATIC
     logging/backend.h
     logging/filter.cpp
     logging/filter.h
+    logging/formatter.h
     logging/log.h
     logging/log_entry.h
     logging/text_formatter.cpp

src/common/logging/formatter.h

@@ -0,0 +1,23 @@
+// Copyright 2022 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <type_traits>
+
+#include <fmt/format.h>
+
+// adapted from https://github.com/fmtlib/fmt/issues/2704
+// a generic formatter for enum classes
+#if FMT_VERSION >= 80100
+template <typename T>
+struct fmt::formatter<T, std::enable_if_t<std::is_enum_v<T>, char>>
+    : formatter<std::underlying_type_t<T>> {
+    template <typename FormatContext>
+    auto format(const T& value, FormatContext& ctx) -> decltype(ctx.out()) {
+        return fmt::formatter<std::underlying_type_t<T>>::format(
+            static_cast<std::underlying_type_t<T>>(value), ctx);
+    }
+};
+#endif

src/common/logging/log.h

@@ -6,26 +6,12 @@
 
 #include <algorithm>
 #include <string_view>
-#include <type_traits>
 
 #include <fmt/format.h>
 
+#include "common/logging/formatter.h"
 #include "common/logging/types.h"
 
-// adapted from https://github.com/fmtlib/fmt/issues/2704
-// a generic formatter for enum classes (<= 32 bits)
-#if FMT_VERSION >= 80100
-template <typename T>
-struct fmt::formatter<T, std::enable_if_t<std::is_enum_v<T>, char>>
-    : formatter<std::underlying_type_t<T>> {
-    template <typename FormatContext>
-    auto format(const T& value, FormatContext& ctx) -> decltype(ctx.out()) {
-        return fmt::formatter<std::underlying_type_t<T>>::format(
-            static_cast<std::underlying_type_t<T>>(value), ctx);
-    }
-};
-#endif
-
 namespace Common::Log {
 
 // trims up to and including the last of ../, ..\, src/, src\ in a string