Problem:
Calling `xstrdup` with a NULL pointer causes a SIGSEGV if `lua_tostring` returns
NULL in `nlua_luv_thread_common_cfpcall`.
Crash stack trace:
- `_platform_strlen` → `xstrdup` (memory.c:469)
- `nlua_luv_thread_common_cfpcall` (executor.c:281)
Solution:
Check if `lua_tostring` returns NULL and pass NULL to `event_create` to avoid the crash.
Problem: We want to deprecate `nvim_err_write(ln)()` but there is no
obvious replacement (from Lua). Meanwhile we already have
`nvim_echo()` with an `opts` argument.
Solution: Add `err` argument to `nvim_echo()` that directly maps to
`:echoerr`.
Problem: Separate message emitted for each newline present in Lua
print() arguments.
Solution: Make msg_multiline() handle NUL bytes. Refactor print() to use
msg_multiline(). Refactor vim.print() to use print().
Problem: Lua callbacks for "msg_show" events with vim.ui_attach() are
executed when it is not safe.
Solution: Disallow non-fast API calls for "msg_show" event callbacks.
Automatically detach callback after excessive errors.
Make sure fast APIs do not modify Nvim state.
Problem: Installing treesitter parser is hard (harder than
climbing to heaven).
Solution: Add optional support for wasm parsers with `wasmtime`.
Notes:
* Needs to be enabled by setting `ENABLE_WASMTIME` for tree-sitter and
Neovim. Build with
`make CMAKE_EXTRA_FLAGS=-DENABLE_WASMTIME=ON
DEPS_CMAKE_FLAGS=-DENABLE_WASMTIME=ON`
* Adds optional Rust (obviously) and C11 dependencies.
* Wasmtime comes with a lot of features that can negatively affect
Neovim performance due to library and symbol table size. Make sure to
build with minimal features and full LTO.
* To reduce re-compilation times, install `sccache` and build with
`RUSTC_WRAPPER=<path/to/sccache> make ...`
Do the expansion right after setting the expand context, so that the
length of the completion prefix can be set, but don't do that directly
in set_one_cmd_context(), as that's also called by getcmdcompltype().
Problem:
`TSNode:_rawquery()` is complicated, has known issues and the Lua and
C code is awkwardly coupled (see logic with `active`).
Solution:
- Add `TSQueryCursor` and `TSQueryMatch` bindings.
- Replace `TSNode:_rawquery()` with `TSQueryCursor:next_capture()` and `TSQueryCursor:next_match()`
- Do more stuff in Lua
- API for `Query:iter_captures()` and `Query:iter_matches()` remains the same.
- `treesitter.c` no longer contains any logic related to predicates.
- Add `match_limit` option to `iter_matches()`. Default is still 256.
A lot of functions in move.c only worked for curwin, alternatively
took a `wp` arg but still only work if that happens to be curwin.
Refactor those that are needed for update_topline(wp) to work
for any window.
fixes#27723fixes#27720
Then we can just load metadata in C as a single msgpack blob. Which also
can be used directly as binarly data, instead of first unpacking all the
functions and ui_events metadata to immediately pack it again, which was
a bit of a silly walk (and one extra usecase of `msgpack_rpc_from_object`
which will get yak shaved in the next PR)
Functions like file_open_new() and file_open_fd_new() which just is a
wrapper around the real functions but with an extra xmalloc/xfree around
is an anti-pattern. If the caller really needs to allocate a
FileDescriptor as a heap object, it can do that directly.
FileDescriptor by itself is pretty much a pointer, or rather two:
the OS fd index and a pointer to a buffer. So most of the time an extra
pointer layer is just wasteful.
In the case of scriptin[curscript] in getchar.c, curscript used
to mean in practice:
N+1 open scripts when curscript>0
zero or one open scripts when curscript==0
Which means scriptin[0] had to be compared to NULL to disambiguate the
curscript=0 case.
Instead, use curscript==-1 to mean that are no script,
then all pointer comparisons dissappear and we can just use an array of
structs without extra pointers.
Note: this contains two _temporary_ changes which can be reverted
once the Arena vs no-Arena distinction in API wrappers has been removed.
Both nlua_push_Object and object_to_vim_take_luaref() has been changed
to take the object argument as a pointer. This is not going to be
necessary once these are only used with arena (or not at all) allocated
Objects.
The object_to_vim() variant which leaves luaref untouched might need to
stay for a little longer.
and for return value of nlua_exec/nlua_call_ref, as this uses
the same family of functions.
NB: the handling of luaref:s is a bit of a mess.
add api_luarefs_free_XX functions as a stop-gap as refactoring
luarefs is a can of worms for another PR:s.
as a minor feature/bug-fix, nvim_buf_call and nvim_win_call now preserves
arbitrary return values.
Problem: Erroring when both {range} and {code} are supplied to
:lua is inconvenient and may break mappings.
Solution: Don't error, ignore {range} and execute {code} when both
are supplied.
Remove `export` pramgas from defs headers as it causes IWYU to believe
that the definitions from the defs headers comes from main header, which
is not what we really want.
Problem: Confusing error for missing key.
Solution: Use the actualy key for the error. (closesvim/vim#9241)
5c1ec439f0
Co-authored-by: Bram Moolenaar <Bram@vim.org>
If Nvim is in the process of exiting then we do not want to allocate any
new refs onto the event loop, because they will not be freed and will
result in a memory leak.
We already have an extensive suite of static analysis tools we use,
which causes a fair bit of redundancy as we get duplicate warnings. PVS
is also prone to give false warnings which creates a lot of work to
identify and disable.
