`_resolve_objc_member_calls` types a receiver from `self`/`super`, an explicit
class name, the file's local table or the class's @property/ivar table, then
requires exactly one declaration of that type. Zero declarations and more than
one shared a single bail, so a call into a class another repository declares was
dropped with the receiver type already in hand — the case #3152 parks for the
merge in Java, C++, C# and Swift.
Split the three type-known bails: zero declarations parks `{callee,
receiver_type, lang: "objc", line}` on the caller, more than one stays dropped as
before (a local ambiguity that merging only widens). A builtin receiver type is
filtered out at the parking sites, matching what the Swift and C++ resolvers
already skip before resolving.
On the merge side an ObjC method label keeps its `+`/`-` sigil where every other
extractor writes `.name()`, and a parked selector does not say which was meant,
so both spellings are tried and a class declaring both counts as ambiguous. The
sigil is what keeps ObjC and C++ members disjoint inside a shared `.h`, which is
in both languages' suffix sets.
Depends on the `_callable` / `_callable_class` markers (#3228) that
`_index_declarations` indexes declarations by; the commit before this one carries
them.
(cherry picked from commit 487fd5490d)
xiongjianxu
41b4e197b2