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#pragma once
#include <boost/bimap.hpp>
#include <boost/noncopyable.hpp>
#include <string>
#include <cassert>
/**
* Bidirectional mapping between enumerated values
* and strings.
*/
template <class E>
class EnumStringMap : boost::noncopyable {
private:
typedef boost::bimap< E, std::string > bimap_type;
typedef typename bimap_type::value_type value_type;
bimap_type bimap;
public:
explicit EnumStringMap(std::initializer_list< std::pair<E, const char *> > in) {
for (auto es : in)
{
bimap.insert(value_type(es.first, es.second));
}
// Sanity check that there were no
// duplicate mappings.
assert(bimap.size() == in.size());
}
const char *stringify(E e) const {
auto i = bimap.left.find(e);
assert(i != bimap.left.end() && "Missing mapping for enumerated value");
return i->second.c_str();
}
E parse(const char *s) const {
E e;
bool result = parse(s, &e);
assert(result && "Missing string->enum mapping");
return e;
}
bool parse(const char *s, E *e) const {
auto i = bimap.right.find(s);
if (i == bimap.right.end())
{
return false;
}
*e = i->second;
return true;
}
};
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