string_var_registry.h

00001 /*************************************************************************
00002  *              ESLA: Embeddable Scripting LAnguage
00003  *                  Copyright (C) 2003 Frantz Maerten
00004  *
00005  *   This  program  is  free  software;  you  can  redistribute it and/or
00006  *   modify  it  under  the  terms  of  the GNU General Public License as
00007  *   published  by  the Free Software Foundation; either version 2 of the
00008  *   License, or (at your option) any later version.
00009  *
00010  *   If  you modify this software, you should contact the author, include
00011  *   a  notice giving the name of the person performing the modification,
00012  *   the date of modification, and the reason for such modification.
00013  *
00014  *   Note   that   the   GNU  General  Public  License  does  not  permit
00015  *   incorporating the Software into proprietary programs.
00016  *
00017  *  Contact: Frantz Maerten
00018  *     frantz@pangea.stanford.edu
00019  *
00020  *     Dept. of Geological & Environmental Sciences
00021  *     Stanford University 
00022  *     Stanford, CA 94305-2115
00023  *     USA
00024  *************************************************************************/
00025 
00026 
00027 #ifndef STRING_VAR_REGISTRY_H__
00028 #define STRING_VAR_REGISTRY_H__
00029 
00030 #include "../esla_namespace.h"
00031 #include <map>
00032 #include <string>
00033 
00034 
00035 BEGIN_LIB_NAMESPACE
00036 
00051 class StringVarRegistry {
00052 public:
00054   static bool bind(const std::string& expression, bool verbose=false) ;
00056   static bool bind(const std::string& name, const std::string& value) ;
00058   static bool rebind(const std::string& name, const std::string& new_value) ;
00060   static std::string resolve(const std::string& name) ;
00061 
00063   static std::string parse(const std::string& expr) ;
00064 
00066   static void dump(std::iostream& os) ;
00067 
00068   static std::string extract_name(const std::string& name) ;
00069 
00070 private:
00071   static std::map<std::string, std::string> map_ ;
00072   static std::string get_var(const std::string& s, int start) ;
00073 } ;
00074 
00075 END_LIB_NAMESPACE
00076 
00077 #endif