Function doublecap

other_src/lua/src/lpeg.cpp:391–399

static Capture *doublecap (lua_State *L, Capture *cap, int captop, int ptop) {
  Capture *newc;
  if (captop >= INT_MAX/((int)sizeof(Capture) * 2))
    luaL_error(L, "too many captures");
  newc = (Capture *)lua_newuserdata(L, captop * 2 * sizeof(Capture));
  memcpy(newc, cap, captop * sizeof(Capture));
  lua_replace(L, caplistidx(ptop));
  return newc;
}


static Stack *doublestack (lua_State *L, Stack **stacklimit, int ptop) {