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There's an awkward divide in yeast between returning a list of nodes or optional node (both of which are iterable), and returning a single node (which is not). In practice, we would like all of these cases to be handled transparently: if a single node is returned, it behaves as if it were a singleton list containing that node. This gives us a uniform interface during translation -- no matter what is returned, it will be an iterable of nodes. To facilitate this, we make the slightly unorthodox choice of implementing IntoIterator for Id, with the behaviour detailed above.
CodeQL Shared Libraries
This folder contains shared, language-agnostic CodeQL libraries.
Libraries are organized into separate query packs, in order to allow for
individual versioning. For example, the shared static single assignment (SSA)
library exists in the codeql/ssa pack, which can be referenced by adding
dependencies:
codeql/ssa: 0.0.1
to qlpack.yml.
All shared libraries will belong to a codeql/<name> pack, and live in the
namespace codeql.<name>.