1 /* Copyright (c) 2010-2018. 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.hpp"
10 #include "lua_utils.hpp"
11 #include "src/surf/xml/platf.hpp"
14 XBT_LOG_NEW_DEFAULT_CATEGORY(lua, "Lua Bindings");
18 extern "C" int luaopen_simgrid(lua_State* L);
20 /* ********************************************************************************* */
22 /* ********************************************************************************* */
25 * \brief Prints a log string with debug level.
26 * \param L a Lua state
27 * \return number of values returned to Lua
29 * - Argument 1 (string): the text to print
31 static int debug(lua_State* L) {
33 const char* str = luaL_checkstring(L, 1);
39 * \brief Prints a log string with info level.
40 * \param L a Lua state
41 * \return number of values returned to Lua
43 * - Argument 1 (string): the text to print
45 static int info(lua_State* L) {
47 const char* str = luaL_checkstring(L, 1);
52 static int error(lua_State* L) {
54 const char* str = luaL_checkstring(L, 1);
59 static int critical(lua_State* L) {
61 const char* str = luaL_checkstring(L, 1);
62 XBT_CRITICAL("%s", str);
67 * @brief Dumps a lua table with XBT_DEBUG
69 * This function can be called from within lua via "simgrid.dump(table)". It will
70 * then dump the table via XBT_DEBUG
72 static int dump(lua_State* L) {
73 int argc = lua_gettop(L);
75 for (int i = 1; i <= argc; i++) {
76 if (lua_istable(L, i)) {
77 lua_pushnil(L); /* table nil */
79 //lua_next pops the topmost element from the stack and
80 //gets the next pair from the table at the specified index
81 while (lua_next(L, i)) { /* table key val */
82 // we need to copy here, as a cast from "Number" to "String"
83 // could happen in Lua.
84 // see remark in the lua manual, function "lua_tolstring"
85 // http://www.lua.org/manual/5.3/manual.html#lua_tolstring
87 lua_pushvalue(L, -2); /* table key val key */
89 XBT_DEBUG("%s", sglua_keyvalue_tostring(L, -1, -2));
92 lua_settop(L, argc); // Remove everything except the initial arguments
99 static const luaL_Reg simgrid_functions[] = {
103 {"critical", critical},
108 /* ********************************************************************************* */
109 /* module management functions */
110 /* ********************************************************************************* */
113 * \brief Makes the core functions available to the Lua world.
114 * \param L a Lua world
116 static void sglua_register_core_functions(lua_State *L)
118 /* register the core C functions to lua */
119 luaL_newlib(L, simgrid_functions); /* simgrid */
120 lua_pushvalue(L, -1); /* simgrid simgrid */
121 lua_setglobal(L, "simgrid"); /* simgrid */
125 * \brief Opens the simgrid Lua module.
127 * This function is called automatically by the Lua interpreter when some
128 * Lua code requires the "simgrid" module.
130 * \param L the Lua state
132 int luaopen_simgrid(lua_State *L)
134 XBT_DEBUG("luaopen_simgrid *****");
136 sglua_register_core_functions(L);
137 sglua_register_host_functions(L);
138 sglua_register_platf_functions(L);