source: trunk/tests/lualib_test/nv_lualib_test.cc

#include <nv/lib/lua.hh>
#include <nv/lua/lua_state.hh>
#include <nv/lua/lua_dispatch.hh>
#include <nv/lua/lua_raw.hh>
#include <nv/lua/lua_glm.hh>
#include <nv/core/logger.hh>
#include <nv/core/math.hh>
#include <nv/core/string.hh>
#include <iostream>
#include <functional>

void hello( const std::string& h )
{
        std::cout << h << " world from C++!" << std::endl;
}


int main(int, char* [])
{
        nv::logger log(nv::LOG_TRACE);
        log.add_sink( new nv::log_file_sink("log.txt"), nv::LOG_TRACE );
        log.add_sink( new nv::log_console_sink(), nv::LOG_TRACE );
        
        NV_LOG( nv::LOG_NOTICE, "Logging started" );

        // create new Lua state
        {
                nv::lua::state state( true );
                nv::lua::register_glm( state );
                // run the Lua script
                state.register_function<decltype(&hello),&hello>( "hello" );
                state.do_file( "init.lua" );
                //std::cout << nv::function_traits<decltype(hello)>::arg_count << std::endl;

                log.set_level( nv::LOG_INFO );
                for (;;)
                {
                        nv::lua::stack_guard guard( state );
                        int stack = guard.get_level();
                        std::string input;
                        std::cout << "LUA (" << stack << ") > ";
                        std::getline( std::cin, input );
                        if (input == "quit")
                        {
                                break;
                        }

                        if (input.find("=", 0) == std::string::npos && 
                                input.find("if", 0) == std::string::npos && 
                                input.find("return", 0) == std::string::npos)
                        {
                                input = "return " + input;
                        }

                        std::cout << "> " << input << std::endl;

                        bool result = state.do_string( input, "", nv::lua::ret_multi );
                        if ( !result )
                        {
                                continue;
                        }

                        if (lua_gettop( state ) > stack)
                        {
                                for ( int i = stack+1; i <= lua_gettop( state ); ++i )
                                {
                                        std::cout << nlua_typecontent( state, i ) << std::endl;
                                }
                        }
                }
        }
        NV_LOG( nv::LOG_NOTICE, "Logging stopped" );

        return 0;
}