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refactor(fold): avoid coverity false-positive 

Also add some more argument checks.
This commit is contained in:
Jaehwang Jung 2024-04-22 23:46:43 +09:00
parent ea1c9f60e0
commit 1590e21e9c
1 changed files with 13 additions and 11 deletions
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24
src/nvim/lua/stdlib.c
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@ -549,19 +549,21 @@ static int nlua_iconv(lua_State *lstate)
static int nlua_foldupdate(lua_State *lstate)
{
handle_T window = (handle_T)luaL_checkinteger(lstate, 1);
Error err = ERROR_INIT;
win_T *win = find_window_by_handle(window, &err);
if (ERROR_SET(&err)) {
nlua_push_errstr(lstate, err.msg);
api_clear_error(&err);
lua_error(lstate);
return 0;
win_T *win = handle_get_window(window);
if (!win) {
return luaL_error(lstate, "invalid window");
}
// input is zero-based end-exclusive range
linenr_T top = (linenr_T)luaL_checkinteger(lstate, 2) + 1;
if (top < 1 || top > win->w_buffer->b_ml.ml_line_count) {
return luaL_error(lstate, "invalid top");
}
linenr_T bot = (linenr_T)luaL_checkinteger(lstate, 3);
if (top > bot) {
return luaL_error(lstate, "invalid bot");
}
linenr_T start = (linenr_T)luaL_checkinteger(lstate, 2);
linenr_T end = (linenr_T)luaL_checkinteger(lstate, 3);
foldUpdate(win, start + 1, end);
foldUpdate(win, top, bot);
return 0;
}