Maarten Lankhorst : include: Add DEFINE_ENUM_FLAG_OPERATORS to winnt.h.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 912f040748a39e2a2a83f22f81e4cd1204da870a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=912f040748a39e2a2a83f22f81...

Author: Maarten Lankhorst <m.b.lankhorst(a)gmail.com>
Date:   Wed Nov 11 12:34:46 2009 +0100

include: Add DEFINE_ENUM_FLAG_OPERATORS to winnt.h.

---

 include/winnt.h |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/include/winnt.h b/include/winnt.h
index 032e9c1..a77a607 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -309,6 +309,21 @@ extern "C" {
 #define ERROR_SEVERITY_WARNING       0x80000000
 #define ERROR_SEVERITY_ERROR         0xC0000000
 
+#ifdef __cplusplus
+#define DEFINE_ENUM_FLAG_OPERATORS(ENUMTYPE) \
+extern "C++" { \
+    inline ENUMTYPE operator | (ENUMTYPE a, ENUMTYPE b) { return ENUMTYPE(((int)a)|((int)b)); } \
+    inline ENUMTYPE operator |= (ENUMTYPE &a, ENUMTYPE b) { return (ENUMTYPE &)(((int &)a) |= ((int)b)); } \
+    inline ENUMTYPE operator & (ENUMTYPE a, ENUMTYPE b) { return ENUMTYPE(((int)a)&((int)b)); } \
+    inline ENUMTYPE operator &= (ENUMTYPE &a, ENUMTYPE b) { return (ENUMTYPE &)(((int &)a) &= ((int)b)); } \
+    inline ENUMTYPE operator ~ (ENUMTYPE a) { return (ENUMTYPE)(~((int)a)); } \
+    inline ENUMTYPE operator ^ (ENUMTYPE a, ENUMTYPE b) { return ENUMTYPE(((int)a)^((int)b)); } \
+    inline ENUMTYPE operator ^= (ENUMTYPE &a, ENUMTYPE b) { return (ENUMTYPE &)(((int &)a) ^= ((int)b)); } \
+}
+#else
+#define DEFINE_ENUM_FLAG_OPERATORS(ENUMTYPE) /* */
+#endif
+
 /* Microsoft's macros for declaring functions */
 
 #ifdef __cplusplus