CodeQL library for Swift
codeql/swift-all 2.0.4-dev (changelog, source)
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Predicate signature TypeTrackingInput::simpleLocalSmallStep

Holds if there is a simple local flow step from nodeFrom to nodeTo. A transitive closure of such steps is prepended to the non-simple type-tracking steps.

signature predicate simpleLocalSmallStep(Node nodeFrom, Node nodeTo)