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Diffstat (limited to 'libs/pbd/pbd/enumwriter.h')
-rw-r--r-- | libs/pbd/pbd/enumwriter.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/libs/pbd/pbd/enumwriter.h b/libs/pbd/pbd/enumwriter.h new file mode 100644 index 0000000000..356a0a1acc --- /dev/null +++ b/libs/pbd/pbd/enumwriter.h @@ -0,0 +1,74 @@ +/* + 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. + + $Id$ +*/ + +#include <map> +#include <string> +#include <vector> +#include <exception> + + +namespace PBD { + +class unknown_enumeration : public std::exception { + public: + virtual const char *what() const throw() { return "unknown enumerator in PBD::EnumWriter"; } +}; + +class EnumWriter { + public: + EnumWriter (); + ~EnumWriter (); + + static EnumWriter& instance() { return *_instance; } + + 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); + + private: + 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; +}; + +} + +#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))) + |