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/*
Copyright (C) 2006 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#ifndef __pbd_enumwriter_h__
#define __pbd_enumwriter_h__
#include <map>
#include <string>
#include <vector>
#include <exception>
#include <sstream>
#include "pbd/libpbd_visibility.h"
namespace PBD {
class LIBPBD_API unknown_enumeration : public std::exception {
public:
unknown_enumeration (std::string const & e) throw() {
std::stringstream s;
s << "unknown enumerator " << e << " in PBD::EnumWriter";
_message = s.str ();
}
~unknown_enumeration () throw() {}
virtual const char *what() const throw() {
return _message.c_str();
}
private:
std::string _message;
};
class LIBPBD_API EnumWriter {
public:
static EnumWriter& instance();
static void destroy();
void register_distinct (std::string type, std::vector<int>, std::vector<std::string>);
void register_bits (std::string type, std::vector<int>, std::vector<std::string>);
std::string write (std::string type, int value);
int read (std::string type, std::string value);
void add_to_hack_table (std::string str, std::string hacked_str);
private:
EnumWriter ();
~EnumWriter ();
struct EnumRegistration {
std::vector<int> values;
std::vector<std::string> names;
bool bitwise;
EnumRegistration() {}
EnumRegistration (std::vector<int>& v, std::vector<std::string>& s, bool b)
: values (v), names (s), bitwise (b) {}
};
typedef std::map<std::string, EnumRegistration> Registry;
Registry registry;
std::string write_bits (EnumRegistration&, int value);
std::string write_distinct (EnumRegistration&, int value);
int read_bits (EnumRegistration&, std::string value);
int read_distinct (EnumRegistration&, std::string value);
static EnumWriter* _instance;
static std::map<std::string,std::string> hack_table;
int validate (EnumRegistration& er, int value) const;
int validate_bitwise (EnumRegistration& er, int value) const;
};
}
#define enum_2_string(e) (PBD::EnumWriter::instance().write (typeid(e).name(), e))
#define string_2_enum(str,e) (PBD::EnumWriter::instance().read (typeid(e).name(), (str)))
#endif /* __pbd_enumwriter_h__ */
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