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Rust: Fix performance issue associated with neutral models #21587

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Rust: Fix performance issue associated with neutral models #21587

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7 changes: 6 additions & 1 deletion rust/ql/lib/codeql/files/FileSystem.qll
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Original file line number Diff line number Diff line change
Expand Up @@ -45,12 +45,17 @@ extensible predicate additionalExternalFile(string relativePath);

/** A file. */
class File extends Container, Impl::File {
pragma[nomagic]
private predicate fromSource0() {
exists(ExtractorStep s | s.getAction() = "Extract" and s.getFile() = this)
}

/**
* Holds if this file was extracted from the source code of the target project
* (rather than another location such as inside a dependency).
*/
predicate fromSource() {
exists(ExtractorStep s | s.getAction() = "Extract" and s.getFile() = this) and
this.fromSource0() and
not additionalExternalFile(this.getRelativePath())
}

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