From 3858b4f3ec1d56fe36c8f7fee476ffaeaab023c0 Mon Sep 17 00:00:00 2001
From: yyc12345 <yyc12321@outlook.com>
Date: Thu, 15 Aug 2024 16:50:15 +0800
Subject: [PATCH] fix: use new way to detect c++ version in MSVC.

- use new macro to check C++ version in MSVC, instead of use compiler switch and __cplusplus macro.
---
 src/CMakeLists.txt | 4 ----
 src/StdPatch.hpp   | 8 +++++---
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index dbcf12d..b050eac 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -72,10 +72,6 @@ PRIVATE
     $<$<CXX_COMPILER_ID:MSVC>:_UNICODE>
 )
 target_compile_options(YYCCommonplace
-# Enable new __cplusplus macro in MSVC.
-# Because we use it in header, so we need populate it.
-PUBLIC
-    $<$<CXX_COMPILER_ID:MSVC>:/Zc:__cplusplus>
 # Order build as UTF-8 in MSVC
 PRIVATE
     $<$<CXX_COMPILER_ID:MSVC>:/utf-8>
diff --git a/src/StdPatch.hpp b/src/StdPatch.hpp
index 1cfddf0..69388e1 100644
--- a/src/StdPatch.hpp
+++ b/src/StdPatch.hpp
@@ -204,10 +204,12 @@ namespace YYCC::StdPatch {
 	*/
 	template<class _TContainer, class _TKey>
 	bool Contains(const _TContainer& container, const _TKey& key) {
-#if __cplusplus < 202002L
-		return container.find(key) != container.end();
-#else
+		// __cplusplus macro need special compiler switch enabled when compiling.
+		// So we use _MSVC_LANG check it instead.
+#if __cplusplus >= 202002L || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
 		return container.contains(key);
+#else
+		return container.find(key) != container.end();
 #endif
 	}