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38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
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#ifndef NETGEN_CORE_XBOOL_HPP
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#define NETGEN_CORE_XBOOL_HPP
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/**************************************************************************/
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/* File: xbool.hpp */
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/* Author: Joachim Schoeberl */
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/* Date: 14. Nov. 07 */
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/**************************************************************************/
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namespace ngcore
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{
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// an extended bool with values false/maybe/true
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enum TMAYBE { maybe };
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class xbool
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{
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uint8_t state;
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public:
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xbool (bool b) : state(b ? 2 : 0) { ; }
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xbool (TMAYBE x) : state(1) { ; }
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xbool () = default;
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xbool (const xbool &) = default;
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xbool & operator= (bool b) { state = b ? 2 : 0; return *this; }
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xbool & operator= (TMAYBE x) { state = 1; return *this; }
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bool IsTrue () const { return state == 2; }
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bool IsMaybe () const { return state == 1; }
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bool IsFalse () const { return state == 0; }
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};
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} // namespace ngcore
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#endif // NETGEN_CORE_XBOOL_HPP
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