mirror of
https://github.com/libretro/scummvm.git
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114 lines
2.8 KiB
C++
114 lines
2.8 KiB
C++
/*
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** $Id$
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** Auxiliary functions for building Lua libraries
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** See Copyright Notice in lua.h
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*/
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/* Please Notice: This file uses only the official API of Lua
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** Any function declared here could be written as an application
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** function. With care, these functions can be used by other libraries.
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*/
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#include "engine/lua/lauxlib.h"
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#include "engine/lua/lua.h"
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#include "engine/lua/luadebug.h"
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#include "engine/lua/lmem.h"
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int32 luaL_findstring(const char *name, const char *list[]) {
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int32 i;
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for (i = 0; list[i]; i++)
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if (strcmp(list[i], name) == 0)
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return i;
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return -1; // name not found
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}
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void luaL_argerror(int32 numarg, const char *extramsg) {
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const char *funcname;
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lua_getobjname(lua_stackedfunction(0), &funcname);
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if (!funcname)
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funcname = "???";
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if (!extramsg)
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luaL_verror("bad argument #%d to function `%.50s'", numarg, funcname);
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else
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luaL_verror("bad argument #%d to function `%.50s' (%.100s)", numarg, funcname, extramsg);
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}
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const char *luaL_check_lstr(int32 numArg, int32 *len) {
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lua_Object o = lua_getparam(numArg);
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luaL_arg_check(lua_isstring(o), numArg, "string expected");
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if (len)
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*len = lua_strlen(o);
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return lua_getstring(o);
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}
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const char *luaL_opt_lstr(int32 numArg, const char *def, int32 *len) {
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return (lua_getparam(numArg) == LUA_NOOBJECT) ? def : luaL_check_lstr(numArg, len);
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}
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double luaL_check_number(int32 numArg) {
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lua_Object o = lua_getparam(numArg);
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luaL_arg_check(lua_isnumber(o), numArg, "number expected");
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return lua_getnumber(o);
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}
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double luaL_opt_number(int32 numArg, double def) {
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return (lua_getparam(numArg) == LUA_NOOBJECT) ? def : luaL_check_number(numArg);
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}
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lua_Object luaL_tablearg(int32 arg) {
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lua_Object o = lua_getparam(arg);
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luaL_arg_check(lua_istable(o), arg, "table expected");
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return o;
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}
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lua_Object luaL_functionarg(int32 arg) {
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lua_Object o = lua_getparam(arg);
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luaL_arg_check(lua_isfunction(o), arg, "function expected");
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return o;
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}
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lua_Object luaL_nonnullarg(int32 numArg) {
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lua_Object o = lua_getparam(numArg);
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luaL_arg_check(o != LUA_NOOBJECT, numArg, "value expected");
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return o;
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}
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luaL_libList *list_of_libs = NULL;
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void luaL_addlibtolist(luaL_reg *l, int32 n) {
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luaL_libList *list = (luaL_libList *)luaM_malloc(sizeof(luaL_libList));
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list->list = l;
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list->number = n;
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list->next = list_of_libs;
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list_of_libs = list;
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}
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void lua_removelibslists() {
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luaL_libList *list = list_of_libs;
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while (list) {
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luaL_libList *nextList = list->next;
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luaM_free(list);
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list = nextList;
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}
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}
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void luaL_openlib(luaL_reg *l, int32 n) {
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int32 i;
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lua_open(); // make sure lua is already open
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for (i = 0; i < n; i++)
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lua_register(l[i].name, l[i].func);
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luaL_addlibtolist(l, n);
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}
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void luaL_verror(const char *fmt, ...) {
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char buff[500];
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va_list argp;
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va_start(argp, fmt);
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vsprintf(buff, fmt, argp);
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va_end(argp);
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lua_error(buff);
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}
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