swift

6d8b55a9 - Sema: Split up gatherConstraints() into gatherAllConstraints() and gatherNearbyConstraints()

Sema: Split up gatherConstraints() into gatherAllConstraints() and gatherNearbyConstraints() The two GatherKinds no longer share any implementation, so there's no point keeping the logic together. Doing this also allows removing the acceptConstraintFn from gatherAllConstraints(), which further simplifies depthFirstSearch().