1 files changed, 131 insertions, 0 deletions
diff --git a/public/panorama/panoramacxx.h b/public/panorama/panoramacxx.h
new file mode 100644
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+++ b/public/panorama/panoramacxx.h
@@ -0,0 +1,131 @@
+//=========== Copyright Valve Corporation, All rights reserved. ===============//
+//
+// Purpose: 
+//=============================================================================//
+
+#ifndef PANORAMACXX_H 
+#define PANORAMACXX_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+namespace panorama
+{
+
+// TEMPLATE CLASS integral_constant
+template<class _Ty,
+	_Ty _Val>
+struct panorama_integral_constant
+{	// convenient template for integral constant types
+	static const _Ty value = _Val;
+
+	typedef _Ty value_type;
+	typedef panorama_integral_constant<_Ty, _Val> type;
+
+	operator value_type() const
+	{	// return stored value
+		return (value);
+	}
+};
+
+typedef panorama_integral_constant<bool, true> true_type;
+typedef panorama_integral_constant<bool, false> false_type;
+
+
+// TEMPLATE CLASS _Cat_base
+template<bool>
+struct panorama_Cat_base
+	: false_type
+{	// base class for type predicates
+};
+
+template<>
+struct panorama_Cat_base < true >
+	: true_type
+{	// base class for type predicates
+};
+
+// TEMPLATE CLASS enable_if
+template<bool _Test,
+class _Ty = void>
+struct panorama_enable_if
+{	// type is undefined for assumed !_Test
+};
+
+template<class _Ty>
+struct panorama_enable_if < true, _Ty >
+{	// type is _Ty for _Test
+	typedef _Ty type;
+};
+
+#define PANORAMA_IS_BASE_OF(_Base, _Der)	\
+	: panorama_Cat_base<__is_base_of(_Base, _Der)>
+
+// TEMPLATE CLASS is_base_of
+template<class _Base, class _Der>
+struct panorama_is_base_of PANORAMA_IS_BASE_OF( _Base, _Der )
+{	// determine whether _Base is a base of or the same as _Der
+};
+
+#define PANORAMA_IS_ENUM(_Ty)	\
+	: panorama_Cat_base<__is_enum(_Ty)>
+
+// TEMPLATE CLASS is_enum
+template<class _Ty>
+struct panorama_is_enum
+	PANORAMA_IS_ENUM( _Ty )
+{	// determine whether _Ty is an enumerated type
+};
+
+
+// TEMPLATE CLASS is_lvalue_reference
+template<class _Ty>
+struct panorama_is_lvalue_reference
+	: false_type
+{	// determine whether _Ty is an lvalue reference
+};
+
+template<class _Ty>
+struct panorama_is_lvalue_reference < _Ty& >
+	: true_type
+{	// determine whether _Ty is an lvalue reference
+};
+
+
+// TEMPLATE remove_reference
+template<class _Ty>
+struct panorama_remove_reference
+{	// remove reference
+	typedef _Ty type;
+};
+
+template<class _Ty>
+struct panorama_remove_reference < _Ty& >
+{	// remove reference
+	typedef _Ty type;
+};
+
+template<class _Ty>
+struct panorama_remove_reference < _Ty&& >
+{	// remove rvalue reference
+	typedef _Ty type;
+};
+
+// TEMPLATE FUNCTION forward
+template<class _Ty> inline
+_Ty&& panorama_forward( typename panorama_remove_reference<_Ty>::type& _Arg )
+{	// forward an lvalue
+	return (static_cast<_Ty&&>(_Arg));
+}
+
+template<class _Ty> inline
+_Ty&& panorama_forward( typename panorama_remove_reference<_Ty>::type&& _Arg )
+{	// forward anything
+	static_assert(!panorama_is_lvalue_reference<_Ty>::value, "bad forward call");
+	return (static_cast<_Ty&&>(_Arg));
+}
+
+}
+
+#endif // PANORAMACXX_H