1 /* Copyright (c) 2010-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 /* SimGrid Lua bindings */
9 #include "lua_private.h"
10 #include "lua_utils.h"
11 #include "src/surf/xml/platf.hpp"
14 XBT_LOG_NEW_DEFAULT_CATEGORY(lua, "Lua Bindings");
19 int luaopen_simgrid(lua_State *L);
22 /* ********************************************************************************* */
24 /* ********************************************************************************* */
27 * \brief Prints a log string with debug level.
28 * \param L a Lua state
29 * \return number of values returned to Lua
31 * - Argument 1 (string): the text to print
33 static int debug(lua_State* L) {
35 const char* str = luaL_checkstring(L, 1);
41 * \brief Prints a log string with info level.
42 * \param L a Lua state
43 * \return number of values returned to Lua
45 * - Argument 1 (string): the text to print
47 static int info(lua_State* L) {
49 const char* str = luaL_checkstring(L, 1);
54 static int error(lua_State* L) {
56 const char* str = luaL_checkstring(L, 1);
61 static int critical(lua_State* L) {
63 const char* str = luaL_checkstring(L, 1);
64 XBT_CRITICAL("%s", str);
69 * @brief Dumps a lua table with XBT_DEBUG
71 * This function can be called from within lua via "simgrid.dump(table)". It will
72 * then dump the table via XBT_DEBUG
74 static int dump(lua_State* L) {
75 int argc = lua_gettop(L);
77 for (int i = 1; i <= argc; i++) {
78 if (lua_istable(L, i)) {
79 lua_pushnil(L); /* table nil */
81 //lua_next pops the topmost element from the stack and
82 //gets the next pair from the table at the specified index
83 while (lua_next(L, i)) { /* table key val */
84 // we need to copy here, as a cast from "Number" to "String"
85 // could happen in Lua.
86 // see remark in the lua manual, function "lua_tolstring"
87 // http://www.lua.org/manual/5.3/manual.html#lua_tolstring
89 lua_pushvalue(L, -2); /* table key val key */
91 XBT_DEBUG("%s", sglua_keyvalue_tostring(L, -1, -2));
94 lua_settop(L, argc); // Remove everything except the initial arguments
101 static const luaL_Reg simgrid_functions[] = {
105 {"critical", critical},
110 /* ********************************************************************************* */
111 /* module management functions */
112 /* ********************************************************************************* */
115 * \brief Makes the core functions available to the Lua world.
116 * \param L a Lua world
118 static void sglua_register_core_functions(lua_State *L)
120 /* register the core C functions to lua */
121 luaL_newlib(L, simgrid_functions); /* simgrid */
122 lua_pushvalue(L, -1); /* simgrid simgrid */
123 lua_setglobal(L, "simgrid"); /* simgrid */
127 * \brief Opens the simgrid Lua module.
129 * This function is called automatically by the Lua interpreter when some
130 * Lua code requires the "simgrid" module.
132 * \param L the Lua state
134 int luaopen_simgrid(lua_State *L)
136 XBT_DEBUG("luaopen_simgrid *****");
138 sglua_register_core_functions(L);
139 sglua_register_host_functions(L);
140 sglua_register_platf_functions(L);