8000 C++: Add support for getting literals in using declarations by IdrissRio · Pull Request #19603 · github/codeql · GitHub
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C++: Add support for getting literals in using declarations #19603

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Merged
merged 3 commits into from
Jun 3, 2025
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C++: Add support for getting literals in using declarations #19603

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e31f722
C++: Add support for getting referenced literals in using declarations
IdrissRio May 28, 2025
4fd44e9
C++: add test for `getReferencedMember`
IdrissRio Jun 2, 2025
10fb806
C++: add change note for using declarations
IdrissRio May 28, 2025
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C++: Add support for getting referenced literals in using declarations
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@IdrissRio
IdrissRio committed Jun 3, 2025
commit e31f722d76900fecff79b31400206d5d2cb6ee5c
22 changes: 21 additions & 1 deletion cpp/ql/lib/semmle/code/cpp/Namespace.qll
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Expand Up @@ -174,7 +174,27 @@ class UsingDeclarationEntry extends UsingEntry {
*/
Declaration getDeclaration() { usings(underlyingElement(this), unresolveElement(result), _, _) }

override string toString() { result = "using " + this.getDeclaration().getDescription() }
/**
* Gets the member that is referenced by this using declaration, where the member depends on a
* type template parameter.
*
* For example:
* ```
* template <typename T>
* class A {
* using T::m;
* };
* ```
* Here, `getReferencedMember()` yields the member `m` of `T`. Observe that,
* as `T` is not instantiated, `m` is represented by a `Literal` and not
* a `Declaration`.
*/
Literal getReferencedMember() { usings(underlyingElement(this), unresolveElement(result), _, _) }

override string toString() {
result = "using " + this.getDeclaration().getDescription() or
result = "using " + this.getReferencedMember()
}
}

/**
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