* refactor: format all C files under nvim
* refactor: disable formatting for Vim-owned files:
* src/nvim/indent_c.c
* src/nvim/regexp.c
* src/nvim/regexp_nfa.c
* src/nvim/testdir/samples/memfile_test.c
The `HASHTAB_ITER` logic keeps track of how many entries in the hash
table are left to visit, decrementing this on each iteration of the
loop. This was previously decremented at the end of the loop body:
```c
size_t hi##todo_ = hi##ht_->ht_used;
for (hashitem_T *hi = hi##ht_->ht_array; hi##todo_; hi++) {
if (!HASHITEM_EMPTY(hi)) {
{
<user code, macro-inserted>
}
hi##todo_--; // <--- important decrement here
}
}
```
This meant that if the body of the loop (substituted in via macro
expansion) contained a `continue` statement, we'd skip decrementing our
counter, meaning we'd iterate too many times over the hash table,
usually leading to an out of bounds read beyond the hash table's
memory, or uninitialised/null pointers from unused hash table slots.
Decrementing `hi##todo` before the arbitrary loop body protects us from
this, and has no adverse side-effects since only the macro code can (or
should) use this variable.
Before this commit, no code within `HASHTAB_ITER()` contained a
`continue`, meaning this bug was left dormant and the fix has a very
minimal chance of introducing any bugs.
- Minimum required libuv is now v1.12
- Because `uv_os_getenv` requires allocating, we must manage a map
(`envmap` in `env.c`) to maintain the old behavior of `os_getenv` .
- free() map-items after removal. khash.h does not make copies of
anything, so even its keys must be memory-managed by the caller.
closes#8398closes#9267
Including vim.h in another header filer is asking for trouble. Test code
that includes separate header files (e.g.: cimport './src/nvim/buffer.h'),
has a really bad time with this. This is just one piece of the puzzle
though.
- The 'stripdecls.py' script replaces declarations in all headers by includes to
generated headers.
`ag '#\s*if(?!ndef NEOVIM_).*((?!#\s*endif).*\n)*#ifdef INCLUDE_GENERATED'`
was used for this.
- Add and integrate gendeclarations.lua into the build system to generate the
required includes.
- Add -Wno-unused-function
- Made a bunch of old-style definitions ANSI
This adds a requirement: all type and structure definitions must be present
before INCLUDE_GENERATED_DECLARATIONS-protected include.
Warning: mch_expandpath (path.h.generated.h) was moved manually. So far it is
the only exception.
Current type of some other parameters/variables can be improved:
- hashtab_T : ht_error : int -> bool.
- hash_clear_all() : off : int -> unsigned int.
- hash_clear_all() : todo : long -> size_t.
- hash_may_resize() : todo : int -> size_t.
hashtab.h:
- hash_T: long_u -> size_t.
In principle, a hash value could thought of as just an unsigned number
without size semantics (uint32_t or uint64_t). But it is used as
index at some places, and so, size_t is also eligible. Therea re some
places where assignments occur between hash_T and size_t variables, in
both directions. Therefore, if we define hash_T to be of a type having
a different width than that of size_t, we will have an incorrect
assignment somewhere that will require an assert/guard. So the most
sensible option here seems to do hast_T to be size_t too.
- hashtab_T.ht_mask: long_u -> hash_T.
Masks are used to be combined with hash_T values, so they should be of
the same type.
hashtab.c:
- hash_may_resize(): oldsize: long_u -> size_t.
- hash_may_resize(): newsize: long_u -> size_t.
- hash_may_resize(): newmask: long_u -> hash_T.
hashtab.h:
- Add missing includes.
- Move hash_T to the top and use it to define hashtab_T.
- Move hash_removed related definitions to the top, as they are used in
the definition of hashtab_T.
- Reformat multiline expression (start continuation with operator).
- Reformat function declaration into one single line.
hashtab.c:
- Use C99 style variable declarations (move declarations as near to
first-usage point as possible).
- Simplify oldarray/newarray computation.
- Simplify unneeded else branch.
- Remove redundant casts.
Move files from src/ to src/nvim/.
- src/nvim/ becomes the new root dir for nvim executable sources.
- src/libnvim/ is planned to become root dir of the neovim library.
