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JS: Add discard predicates for locations

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Asger F
2025-11-17 10:47:37 +01:00
parent c7341f295d
commit a405b7b3e0
1 changed files with 20 additions and 0 deletions
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20
javascript/ql/lib/semmle/javascript/internal/Overlay.qll
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@@ -28,3 +28,23 @@ overlay[discard_entity]
private predicate discardEntity(@locatable node) {
exists(string file | discardableEntity(file, node) and discardFile(file))
}
overlay[local]
private string getFileFromLocation(@location loc) {
exists(@file file |
locations_default(loc, file, _, _, _, _) and
files(file, result)
)
}
/** Holds if `loc` is in the `file` and is part of the overlay base database. */
overlay[local]
private predicate discardableLocation(string file, @location node) {
not isOverlay() and file = getFileFromLocation(node)
}
/** Holds if `loc` should be discarded, because it is part of the overlay base and is in a file that was also extracted as part of the overlay database. */
overlay[discard_entity]
private predicate discardLocation(@location loc) {
exists(string file | discardableLocation(file, loc) and discardFile(file))
}