83 lines
1.2 KiB
C++
83 lines
1.2 KiB
C++
/*
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* This file is part of the Owl Positioning System (OwlPS).
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* OwlPS is a project of the University of Franche-Comté
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* (Université de Franche-Comté), France.
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*/
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#include "direction.hh"
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#include "posexcept.hh"
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#include <boost/functional/hash.hpp>
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/* *** Constructors *** */
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Direction::Direction(const char source):
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direction(source)
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{
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assert_valid() ;
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}
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/* *** Operations *** */
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inline void Direction::assert_valid() const
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{
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if (! (is_valid() || direction == 0))
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throw bad_direction(direction) ;
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}
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inline bool Direction::is_valid() const
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{
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return direction > 0 && direction <= 4 ;
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}
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/* *** Operators *** */
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Direction& Direction::operator=(const Direction &source)
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{
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direction = source.direction ;
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return *this ;
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}
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Direction& Direction::operator=(const char source)
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{
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direction = source ;
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assert_valid() ;
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return *this ;
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}
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Direction::operator std::string() const
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{
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switch (direction)
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{
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case north:
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return "north" ;
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case east:
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return "east" ;
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case south:
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return "south" ;
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case west:
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return "west" ;
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}
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return "Bad direction!" ;
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}
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size_t hash_value(const Direction &source)
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{
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return boost::hash_value(source.direction) ;
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}
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