LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1,
const char *msg, int level) {
lua_Debug ar;
int top = lua_gettop(L);
int numlevels = countlevels(L1);
int mark = (numlevels > LEVELS1 + LEVELS2) ? LEVELS1 : 0;
if (msg) lua_pushfstring(L, "%s\n", msg);
lua_pushliteral(L, "stack traceback:");
while (lua_getstack(L1, level++, &ar)) {
if (level == mark) { /* too many levels? */
lua_pushliteral(L, "\n\t..."); /* add a '...' */
level = numlevels - LEVELS2; /* and skip to last ones */
}
else {
lua_getinfo(L1, "Slnt", &ar);
lua_pushfstring(L, "\n\t%s:", ar.short_src);
if (ar.currentline > 0)
lua_pushfstring(L, "%d:", ar.currentline);
lua_pushliteral(L, " in ");
pushfuncname(L, &ar);
if (ar.istailcall)
lua_pushliteral(L, "\n\t(...tail calls...)");
lua_concat(L, lua_gettop(L) - top);
}
}
lua_concat(L, lua_gettop(L) - top);
}
void luaL_traceback (LuaThread *L, LuaThread *L1,
const char *msg, int level) {
THREAD_CHECK(L);
LuaDebug ar;
int top = L->stack_.getTopIndex();
int numlevels;
{
THREAD_CHANGE(L1);
numlevels = countlevels(L1);
}
int mark = (numlevels > LEVELS1 + LEVELS2) ? LEVELS1 : 0;
if (msg) {
lua_pushfstring(L, "%s\n", msg);
}
lua_pushliteral(L, "stack traceback:");
{
THREAD_CHANGE(L1);
while (lua_getstack(L1, level++, &ar)) {
if (level == mark) { /* too many levels? */
{
THREAD_CHANGE(L);
lua_pushliteral(L, "\n\t..."); /* add a '...' */
}
level = numlevels - LEVELS2; /* and skip to last ones */
}
else {
lua_getinfo(L1, "Slnt", &ar);
{
THREAD_CHANGE(L);
lua_pushfstring(L, "\n\t%s:", ar.short_src2.c_str());
if (ar.currentline > 0) {
lua_pushfstring(L, "%d:", ar.currentline);
}
lua_pushliteral(L, " in ");
pushfuncname(L, &ar);
if (ar.istailcall) {
lua_pushliteral(L, "\n\t(...tail calls...)");
}
lua_concat(L, L->stack_.getTopIndex() - top);
}
}
}
}
lua_concat(L, L->stack_.getTopIndex() - top);
}
