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+// 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"
+
+/// Destructor.
+Interpreter::~Interpreter (void)
+{
+ for (Funcs::iterator i = funcs_.begin (); i != funcs_.end (); ++i)
+ {
+ delete i->second;
+ }
+}
+
+/// Add a function, Interpreter owns f.
+void
+Interpreter::add (const std::string &s, Func *f)
+{
+ if (!funcs_.insert (Funcs::value_type (s, f)).second)
+ {
+ // Interpreter owns f, therefore, f must be deleted.
+ delete f;
+ throw std::runtime_error ("function \'" + s
+ + "\' inserted two times");
+ }
+}
+
+/// Call a function by name.
+bool
+Interpreter::call (const std::string &s, const Args &a) const
+{
+ Funcs::const_iterator i;
+ i = funcs_.find (s);
+ if (i == funcs_.end ())
+ throw std::runtime_error ("function \'" + s + "\' does not exist");
+ try
+ {
+ return (*i->second) (a);
+ }
+ catch (const std::exception &e)
+ {
+ throw std::runtime_error ("while calling \'" + s + "\', "
+ + e.what ());
+ }
+}
+