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lua/uloop: fd_add: use absolute indices for arguments

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Instead of having to adjust the index repeatedly as the stack is
manipulated, use absolute addressing for the function arguments, so they
stay the same throughout the call.  Zero functional change, just
subjectively easier to follow variables.

Signed-off-by: Karl Palsson <karlp@etactica.com>
This commit is contained in:
Karl Palsson 2020-06-30 10:38:43 +00:00 committed by Petr Štetiar
parent c0941d3289
commit 53b9a2123f
1 changed files with 5 additions and 6 deletions
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11
lua/uloop.c
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@ -233,24 +233,23 @@ static int ul_ufd_add(lua_State *L)
int ref;
int fd_ref;
flags = luaL_checkinteger(L, -1);
flags = luaL_checkinteger(L, 3);
if (!flags) {
lua_pushstring(L, "flags cannot be zero");
lua_error(L);
}
lua_pop(L, 1);
luaL_checktype(L, -1, LUA_TFUNCTION);
luaL_checktype(L, 2, LUA_TFUNCTION);
fd = get_sock_fd(L, -2);
fd = get_sock_fd(L, 1);
lua_getglobal(L, "__uloop_cb");
lua_pushvalue(L, -2);
lua_pushvalue(L, 2);
ref = luaL_ref(L, -2);
lua_pop(L, 1);
lua_getglobal(L, "__uloop_fds");
lua_pushvalue(L, -3);
lua_pushvalue(L, 1);
fd_ref = luaL_ref(L, -2);
lua_pop(L, 1);