// interpreter.cc // marvin - programme du robot 2006. {{{ // // Copyright (C) 2006 Nicolas Schodet // // Robot APB Team/Efrei 2006. // Web: http://assos.efrei.fr/robot/ // Email: robot AT efrei DOT fr // // 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // }}} #include "interpreter.hh" #include "interpreter_parser.hh" /// Destructor. Interpreter::~Interpreter (void) { for (Funcs::iterator i = funcs_.begin (); i != funcs_.end (); ++i) { delete i->second.func; } } /// Add a function, Interpreter owns f. void Interpreter::add (const std::string &s, Func *f, const std::string &desc) { if (!funcs_.insert (Funcs::value_type (s, FuncDesc (f, desc))).second) { // Interpreter owns f, therefore, f must be deleted. delete f; throw std::runtime_error ("function \'" + s + "\' inserted two times"); } } /// Add a function without description, Interpreter owns f. void Interpreter::add (const std::string &s, Func *f) { add (s, f, ""); } /// Test if a function is defined. bool Interpreter::exists (const std::string &s) const { Funcs::const_iterator i; i = funcs_.find (s); return i != funcs_.end (); } /// Call a function by name. void Interpreter::call (const std::string &s, const Args &a, bool dryrun/*false*/) const { Funcs::const_iterator i; i = funcs_.find (s); if (i == funcs_.end ()) throw std::runtime_error ("function \'" + s + "\' does not exist"); try { (*i->second.func) (a, dryrun); } catch (const std::exception &e) { throw std::runtime_error ("while calling \'" + s + "\', " + e.what ()); } } /// Interpret a string. void Interpreter::interpretString (const std::string &s, bool dryrun/*false*/) { InterpreterParser p (*this, dryrun); p.parseString (s); } /// Interpret a file. void Interpreter::interpretFile (const std::string &file, bool dryrun/*false*/) { InterpreterParser p (*this, dryrun); p.parseFile (file); } /// Return an help string. std::string Interpreter::help (void) const { std::string ret; for (Funcs::const_iterator i = funcs_.begin (); i != funcs_.end (); ++i) { ret += i->first; if (!i->second.desc.empty ()) { ret += " : "; // Well, if you really want to implement this better, please do... for (std::string::const_iterator j = i->second.desc.begin (); j != i->second.desc.end (); j++) { if (*j == '\n') ret += "\n "; else ret += *j; } } ret += '\n'; } return ret; }