implemented a tristate

Tilandis/Tilandis.h

@@ -14,6 +14,8 @@ processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
 #include <Windows.h>
 #include "rapidjson\document.h"
 #include "resource.h"
+#include "tristate.h"
+
 // Home namespace
 namespace Tilandis {
 	// TODO: tristates

Tilandis/Tilandis.vcxproj

@@ -124,6 +124,7 @@
     <ClInclude Include="resource.h" />
     <ClInclude Include="Tilandis.h" />
     <ClInclude Include="tilectl.h" />
+    <ClInclude Include="tristate.h" />
     <ClInclude Include="Utility.h" />
   </ItemGroup>
   <ItemGroup>

Tilandis/Tilandis.vcxproj.filters

@@ -50,6 +50,9 @@
     <ClInclude Include="exceptions.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="tristate.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="Tilandis.rc">

Tilandis/tilectl.cpp

@@ -0,0 +1,2 @@
+#include "Tilandis.h"
+

Tilandis/tristate.h

@@ -0,0 +1,104 @@
+/*
+ * Generic tristate object header
+ * Copyright © 2016 Nicholas O'Connor
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+ * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+ * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
+ * the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+ * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * (tristate.h is considered to be a separate project from whatever source code you happen to have found it in.
+ * take it and use it regardless of what anyone else says.)
+ */
+
+#pragma once
+#ifndef __TRISTATE_H
+#define __TRISTATE_H
+
+// Generic tristate object.
+enum tristate {
+	False,
+	True,
+	Mixed
+};
+
+tristate operator==(tristate& lhs, bool& rhs) {
+	if (lhs == True) {
+		switch (rhs) {
+		case true:
+			return True;
+		case false:
+			return False;
+		}
+	} else if (lhs == False) {
+		switch (rhs) {
+		case true:
+			return False;
+		case false:
+			return True;
+		}
+	} else { // Mixed
+#ifdef TRISTATE_MIXED_IS_FALSE
+		switch (rhs) {
+		case true:
+			return False;
+		case false:
+			return True;
+		}
+#else
+		switch (rhs) {
+		case true:
+			return True;
+		case false:
+			return False;
+		}
+#endif
+	}
+}
+
+bool operator==(bool& lhs, tristate& rhs) {
+	if (rhs == True) {
+		switch (lhs) {
+		case true:
+			return True;
+		case false:
+			return False;
+		}
+	}
+	else if (rhs == False) {
+		switch (lhs) {
+		case true:
+			return False;
+		case false:
+			return True;
+		}
+	}
+	else { // Mixed
+#ifdef TRISTATE_MIXED_IS_FALSE
+		switch (lhs) {
+		case true:
+			return False;
+		case false:
+			return True;
+		}
+#else
+		switch (lhs) {
+		case true:
+			return True;
+		case false:
+			return False;
+		}
+#endif
+	}
+}
+
+#endif // !__TRISTATE_H