add last backwards-compatible version

foobar2000/helpers/win32_op.h

@@ -0,0 +1,36 @@
+#pragma once
+
+PFC_NORETURN PFC_NOINLINE void WIN32_OP_FAIL();
+PFC_NORETURN PFC_NOINLINE void WIN32_OP_FAIL_CRITICAL(const char * what);
+
+#ifdef _DEBUG
+void WIN32_OP_D_FAIL(const wchar_t * _Message, const wchar_t *_File, unsigned _Line);
+#endif
+
+//Throws an exception when (OP) evaluates to false/zero.
+#define WIN32_OP(OP)	\
+	{	\
+		SetLastError(NO_ERROR);	\
+		if (!(OP)) WIN32_OP_FAIL();	\
+	}
+
+// Kills the application with appropriate debug info when (OP) evaluates to false/zero.
+#define WIN32_OP_CRITICAL(WHAT, OP)	\
+	{	\
+		SetLastError(NO_ERROR);	\
+		if (!(OP)) WIN32_OP_FAIL_CRITICAL(WHAT);	\
+	}
+
+//WIN32_OP_D() acts like an assert specialized for win32 operations in debug build, ignores the return value / error codes in release build.
+//Use WIN32_OP_D() instead of WIN32_OP() on operations that are extremely unlikely to fail, so failure condition checks are performed in the debug build only, to avoid bloating release code with pointless error checks.
+#ifdef _DEBUG
+#define WIN32_OP_D(OP)	\
+	{	\
+		SetLastError(NO_ERROR); \
+		if (!(OP)) WIN32_OP_D_FAIL(PFC_WIDESTRING(#OP), PFC_WIDESTRING(__FILE__), __LINE__); \
+	}
+
+#else
+#define WIN32_OP_D(OP) (void)( (OP), 0);
+#endif
+