lua_shell.h

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/*
 * Copyright (c) 2014:  G-CSC, Goethe University Frankfurt
 * Author: Sebastian Reiter
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * 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 Lesser General Public License for more details.
 */
 
#ifndef __H__UG_lua_shell
#define __H__UG_lua_shell
 
#include "bindings/lua/lua_util.h"
#include "bindings/lua/lua_parsing.h"
 
namespace ug{
namespace luashell{
 
class LuaShell{
  public:
    LuaShell();
 
    void reset();
 
    void parse_file(const char* filename);
    void run(const char* buffer);
 
    void abort_run(const char* message);
 
    template <class TVal>
    void set(const char* name, TVal value)
    {
      bridge::lua::LuaParsing<TVal>::push(m_luaState, value);
      lua_setglobal(m_luaState, name);
    }
 
    void set(const char* name, void* pval, const char* className);
    void set(const char* name, const void* pval, const char* className);
    void set(const char* name, SmartPtr<void> pval, const char* className);
    void set(const char* name, ConstSmartPtr<void> pval, const char* className);
 
    template <class TVal>
    TVal get_val(const char* name)
    {
      lua_getglobal(m_luaState, name);
      if(!bridge::lua::LuaParsing<TVal>::check(m_luaState, -1)){
        lua_pop(m_luaState, 1);
        UG_THROW("LuaShell error: Couldn't convert " << name << " to requested type.");
      }
 
      TVal val = bridge::lua::LuaParsing<TVal>::get(m_luaState, -1);
      lua_pop(m_luaState, 1);
      return val;
    }
 
  private:
    lua_State* m_luaState;
 
    void init_lua_state();
};
 
}// namespace LuaShell
}// end of namespace
 
 
#endif  //__H__lua_shell