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/*
* This file is part of the source code of the software program
* Vampire. It is protected by applicable
* copyright laws.
*
* This source code is distributed under the licence found here
* https://vprover.github.io/license.html
* and in the source directory
*/
/**
* @file ColorHelper.hpp
* Defines class ColorHelper.
*/
#ifndef __ColorHelper__
#define __ColorHelper__
#include "Forwards.hpp"
#include "Debug/Assertion.hpp"
#include "Lib/Environment.hpp"
namespace Kernel {
class ColorHelper {
public:
/**
* The result may be COLOR_INVALID
*/
static Color combine(Color c1, Color c2)
{
ASS(env.colorUsed || (c1|c2)!=COLOR_INVALID);
return static_cast<Color>(c1|c2);
}
/**
* Return true if colors @c c1 and @c c2 can appear together in
* an inference.
*
* Function returns false iff one of the colors is @c COLOR_LEFT
* and the other is @c COLOR_RIGHT.
*/
static bool compatible(Color c1, Color c2) {
return combine(c1,c2)!=COLOR_INVALID;
}
};
}
#endif // __ColorHelper__