Classes are callable via their constructor but are frequently referenced as
descriptive values, not invoked: ORM args (select(Model), db.get(Model, id)),
exception tuples (except (ErrorA, ErrorB)), and string-literal getattr resolving
to a same-named class. The indirect_call guard treated any callable-def target
identically, so these produced false edges (~41% of indirect_call edges in the
reported sample targeted classes), inflating centrality and traversals.
Track class defs in a callable_class_nids set parallel to callable_def_nids,
mark class nodes with a _callable_class attribute, and exclude class targets
from indirect_call emission in both the intra-file (_emit_indirect_by_name) and
cross-file resolver paths. Marker is stripped before output like _callable.
Covers all languages: both class-node creation sites (the generic
config.class_types branch and the Ruby Struct.new/Class.new/Data.define
synthesis) register into the new set.
Tradeoff: suppression is context-blind, so a genuine higher-order class
callback (e.g. map(Point, coords)) also loses its indirect_call edge. This is
far rarer than the false-positive noise removed and matches the issue framing.
Verified before/after on the same input: 4 class-targeted indirect_call edges
-> 0, function callbacks preserved.
Rishet Mehra
f6742bb6f0