Copyright (C) 2011 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
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 General Public License for more details.
+GNU Lesser General Public License for more details.
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <lauxlib.h>
}
+LuaError::LuaError(lua_State *L, const std::string &s)
+{
+ m_s = "LuaError: ";
+ m_s += s + "\n";
+ m_s += script_get_backtrace(L);
+}
+
+std::string script_get_backtrace(lua_State *L)
+{
+ std::string s;
+ lua_getfield(L, LUA_GLOBALSINDEX, "debug");
+ if(lua_istable(L, -1)){
+ lua_getfield(L, -1, "traceback");
+ if(lua_isfunction(L, -1)){
+ lua_call(L, 0, 1);
+ if(lua_isstring(L, -1)){
+ s += lua_tostring(L, -1);
+ }
+ lua_pop(L, 1);
+ }
+ else{
+ lua_pop(L, 1);
+ }
+ }
+ lua_pop(L, 1);
+ return s;
+}
+
void script_error(lua_State *L, const char *fmt, ...)
{
va_list argp;
va_start(argp, fmt);
- vfprintf(stderr, fmt, argp);
+ char buf[10000];
+ vsnprintf(buf, 10000, fmt, argp);
va_end(argp);
- lua_close(L);
- exit(EXIT_FAILURE);
+ //errorstream<<"SCRIPT ERROR: "<<buf;
+ throw LuaError(L, buf);
}
-void script_call_va(lua_State *L, const char *func, const char *sig, ...)
-{
- va_list vl;
- int narg, nres; /* number of arguments and results */
-
- va_start(vl, sig);
- lua_getglobal(L, func); /* push function */
-
- for (narg = 0; *sig; narg++) {
- /* repeat for each argument */
- /* check stack space */
- luaL_checkstack(L, 1, "too many arguments");
- switch (*sig++) {
- case 'd': /* double argument */
- lua_pushnumber(L, va_arg(vl, double));
- break;
- case 'i': /* int argument */
- lua_pushinteger(L, va_arg(vl, int));
- break;
- case 's': /* string argument */
- lua_pushstring(L, va_arg(vl, char *));
- break;
- case '>': /* end of arguments */
- goto endargs;
- default:
- script_error(L, "invalid option (%c)", *(sig - 1));
- }
+int luaErrorHandler(lua_State *L) {
+ lua_getfield(L, LUA_GLOBALSINDEX, "debug");
+ if (!lua_istable(L, -1)) {
+ lua_pop(L, 1);
+ return 1;
}
-endargs:
-
- nres = strlen(sig); /* number of expected results */
-
- if (lua_pcall(L, narg, nres, 0) != 0) /* do the call */
- script_error(L, "error calling '%s': %s", func, lua_tostring(L, -1));
-
- nres = -nres; /* stack index of first result */
- while (*sig) { /* repeat for each result */
- switch (*sig++) {
- case 'd': /* double result */
- if (!lua_isnumber(L, nres))
- script_error(L, "wrong result type");
- *va_arg(vl, double *) = lua_tonumber(L, nres);
- break;
- case 'i': /* int result */
- if (!lua_isnumber(L, nres))
- script_error(L, "wrong result type");
- *va_arg(vl, int *) = lua_tointeger(L, nres);
- break;
- case 's': /* string result */
- if (!lua_isstring(L, nres))
- script_error(L, "wrong result type");
- *va_arg(vl, const char **) = lua_tostring(L, nres);
- break;
- default:
- script_error(L, "invalid option (%c)", *(sig - 1));
- }
- nres++;
+ lua_getfield(L, -1, "traceback");
+ if (!lua_isfunction(L, -1)) {
+ lua_pop(L, 2);
+ return 1;
}
-
- va_end(vl);
+ lua_pushvalue(L, 1);
+ lua_pushinteger(L, 2);
+ lua_call(L, 2, 1);
+ return 1;
}
bool script_load(lua_State *L, const char *path)
{
- infostream<<"Loading and running script from "<<path<<std::endl;
- int ret = luaL_loadfile(L, path) || lua_pcall(L, 0, 0, 0);
+ verbosestream<<"Loading and running script from "<<path<<std::endl;
+
+ lua_pushcfunction(L, luaErrorHandler);
+ int errorhandler = lua_gettop(L);
+
+ int ret = luaL_loadfile(L, path) || lua_pcall(L, 0, 0, errorhandler);
if(ret){
- errorstream<<"Failed to load and run script from "<<path<<":"<<std::endl;
- errorstream<<"[LUA] "<<lua_tostring(L, -1)<<std::endl;
+ errorstream<<"========== ERROR FROM LUA ==========="<<std::endl;
+ errorstream<<"Failed to load and run script from "<<std::endl;
+ errorstream<<path<<":"<<std::endl;
+ errorstream<<std::endl;
+ errorstream<<lua_tostring(L, -1)<<std::endl;
+ errorstream<<std::endl;
+ errorstream<<"=======END OF ERROR FROM LUA ========"<<std::endl;
lua_pop(L, 1); // Pop error message from stack
+ lua_pop(L, 1); // Pop the error handler from stack
return false;
}
+ lua_pop(L, 1); // Pop the error handler from stack
return true;
}
return L;
}
-lua_State* script_deinit(lua_State *L)
+void script_deinit(lua_State *L)
{
lua_close(L);
}