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