refactor: start to refactor project

src/yycc/windows/import_guard_head.hpp

@@ -0,0 +1,19 @@
+// It is by design that no pragma once or #if to prevent deplicated including.
+// Because this header is the part of wrapper, not a real header.
+// #pragma once
+
+#include "../macro/os_detector.hpp"
+
+#if YYCC_OS == YYCC_OS_WINDOWS
+
+// Define 2 macros to disallow Windows generate MIN and MAX macros
+// which cause std::min and std::max can not function as normal.
+#if !defined(WIN32_LEAN_AND_MEAN)
+#define WIN32_LEAN_AND_MEAN
+#endif
+
+#if !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+
+#endif