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refactor(api): make freeing of return-value opt-in instead of opt out

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As only a few API functions make use of explicit freeing of the return
value, make it opt-in instead. The arena is always present under the
hood, so `Arena *arena` arg now doesn't mean anything other than getting
access to this arena. Also it is in principle possible to return an
allocated value while still using the arena as scratch space for other
stuff (unlikely, but there no reason to not allow it).
This commit is contained in:
bfredl
2024-02-20 13:44:50 +01:00
parent 9bb046d1be
commit 3cc54586be
13 changed files with 33 additions and 37 deletions
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src/nvim/func_attr.h
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@@ -212,6 +212,8 @@
#if defined(DEFINE_FUNC_ATTRIBUTES) || defined(DEFINE_EMPTY_ATTRIBUTES)
/// Fast (non-deferred) API function.
# define FUNC_API_FAST
/// Return value needs to be freed
# define FUNC_API_RET_ALLOC
/// Internal C function not exposed in the RPC API.
# define FUNC_API_NOEXPORT
/// API function not exposed in Vimscript/eval.