Utilities/Utilities/Tribool.cpp

#include "Tribool.h"


namespace Tribool {

Tribool::Tribool() : m_value(TriboolValue::Indeterminate)
{
}

Tribool::Tribool(bool value) : m_value(value? TriboolValue::True : TriboolValue::False)
{
}

Tribool::Tribool(const Tribool::IndeterminateKeywordType&) : m_value(TriboolValue::Indeterminate)
{
}

Tribool::operator bool() const
{
	return m_value == TriboolValue::True? true: false;
}

Tribool Tribool::operator!() const
{
	return m_value == TriboolValue::False? Tribool(true):
		m_value == TriboolValue::True? Tribool(false):
		Tribool(Indeterminate);
}

Tribool Tribool::operator&&(const Tribool& other) const
{
	return (static_cast<bool>(!*this) || static_cast<bool>(!other))?
		Tribool(false):
		((static_cast<bool>(*this) && static_cast<bool>(other))?
		Tribool(true) : Tribool(Indeterminate));
}

Tribool operator&&(const Tribool& lhs, bool rhs)
{
	return rhs? lhs: Tribool(false);
}

Tribool operator&&(bool lhs, const Tribool& rhs)
{
	return lhs? rhs: Tribool(false);
}

Tribool operator&&(const Tribool::IndeterminateKeywordType&, const Tribool& rhs)
{
	return !rhs? Tribool(false) : Tribool(Tribool::Indeterminate); 
}

Tribool operator&&(const Tribool& lhs, const Tribool::IndeterminateKeywordType&)
{
	return !lhs? Tribool(false) : Tribool(Tribool::Indeterminate);
}

Tribool Tribool::operator||(const Tribool& other) const
{
	return (static_cast<bool>(!*this) && static_cast<bool>(!other))?
		Tribool(false):
		((static_cast<bool>(*this) || static_cast<bool>(other))? 
		Tribool(true): Tribool(Tribool::Indeterminate));
}

Tribool operator||(const Tribool& lhs, bool rhs)
{
	return rhs? Tribool(true) : lhs;
}

Tribool operator||(bool lhs, const Tribool& rhs)
{
	return lhs? Tribool(true) : rhs;
}

Tribool operator||(const Tribool::IndeterminateKeywordType&, const Tribool& rhs)
{
	return rhs? Tribool(true) : Tribool(Tribool::Indeterminate);
}

Tribool operator||(const Tribool& lhs, const Tribool::IndeterminateKeywordType&)
{
	return lhs? Tribool(true) : Tribool(Tribool::Indeterminate);
}

Tribool Tribool::operator==(const Tribool& other) const
{
	return (Tribool::Indeterminate(*this) || Tribool::Indeterminate(other))?
		Tribool::Indeterminate: ((*this && other) || (!*this && !other));
}

Tribool operator==(const Tribool& lhs, bool rhs)
{
	return lhs == Tribool(rhs);
}

Tribool operator==(bool lhs, const Tribool& rhs)
{
	return Tribool(lhs) == rhs;
}

Tribool operator==(const Tribool::IndeterminateKeywordType&, const Tribool& rhs)
{
	return Tribool(Tribool::Indeterminate) == rhs;
}

Tribool operator==(const Tribool& lhs, const Tribool::IndeterminateKeywordType&)
{
	return Tribool(Tribool::Indeterminate) == lhs;
}

Tribool Tribool::operator!=(const Tribool& other) const
{
	return (Tribool::Indeterminate(*this) || Tribool::Indeterminate(other))?
		Tribool::Indeterminate: !((*this && other) || (!*this && !other));
}

Tribool operator!=(const Tribool& lhs, bool rhs)
{
	return lhs != Tribool(rhs);
}

Tribool operator!=(bool lhs, const Tribool& rhs)
{
	return Tribool(lhs) != rhs;
}

Tribool operator!=(const Tribool::IndeterminateKeywordType&, const Tribool& rhs)
{
	return Tribool(Tribool::Indeterminate) != rhs;
}

Tribool operator!=(const Tribool& lhs, const Tribool::IndeterminateKeywordType&)
{
	return Tribool(Tribool::Indeterminate) != lhs;
}

} // namespace Tribool