/** Emit a signal. * @tparam string name A signal name. * @param[opt] ... Various arguments. * @function emit_signal */ void luaA_object_emit_signal(lua_State *L, int oud, const char *name, int nargs) { int oud_abs = luaA_absindex(L, oud); lua_class_t *lua_class = luaA_class_get(L, oud); lua_object_t *obj = luaA_toudata(L, oud, lua_class); if(!obj) { luaA_warn(L, "Trying to emit signal '%s' on non-object", name); return; } else if(lua_class->checker && !lua_class->checker(obj)) { luaA_warn(L, "Trying to emit signal '%s' on invalid object", name); return; } signal_t *sigfound = signal_array_getbyid(&obj->signals, a_strhash((const unsigned char *) name)); if(sigfound) { int nbfunc = sigfound->sigfuncs.len; luaL_checkstack(L, lua_gettop(L) + nbfunc + nargs + 2, "too much signal"); /* Push all functions and then execute, because this list can change * while executing funcs. */ foreach(func, sigfound->sigfuncs) luaA_object_push_item(L, oud_abs, *func); for(int i = 0; i < nbfunc; i++) { /* push object */ lua_pushvalue(L, oud_abs); /* push all args */ for(int j = 0; j < nargs; j++) lua_pushvalue(L, - nargs - nbfunc - 1 + i); /* push first function */ lua_pushvalue(L, - nargs - nbfunc - 1 + i); /* remove this first function */ lua_remove(L, - nargs - nbfunc - 2 + i); luaA_dofunction(L, nargs + 1, 0); } } else { luaA_warn(L, "Trying to emit unknown signal '%s'", name); return; } /* Then emit signal on the class */ lua_pushvalue(L, oud); lua_insert(L, - nargs - 1); luaA_class_emit_signal(L, luaA_class_get(L, - nargs - 1), name, nargs + 1); }
int luaA_object_tostring(lua_State *L) { lua_class_t *lua_class = luaA_class_get(L, 1); lua_pushfstring(L, "%s: %p", lua_class->name, luaA_checkudata(L, 1, lua_class)); return 1; }
int luaA_object_tostring(lua_State *L) { lua_class_t *lua_class = luaA_class_get(L, 1); lua_object_t *object = luaA_checkudata(L, 1, lua_class); int offset = 0; for(; lua_class; lua_class = lua_class->parent) { if(offset) { lua_pushliteral(L, "/"); lua_insert(L, -++offset); } lua_pushstring(L, NONULL(lua_class->name)); lua_insert(L, -++offset); if (lua_class->tostring) { int k, n; lua_pushliteral(L, "("); n = 2 + lua_class->tostring(L, object); lua_pushliteral(L, ")"); for (k = 0; k < n; k++) lua_insert(L, -offset); offset += n; } } lua_pushfstring(L, ": %p", object); lua_concat(L, offset + 1); return 1; }