033b239b22
Now `TypeRepr` is a final class in the AST, which is more or less just a type with a location in code. As the frontend does not provide a direct way to get a type from a type representation, this information must be provided when fetching the label of a type repr. This meant: * removing the type repr field from `EnumIsCaseExpr`: this is a virtual AST node introduced in place of some kinds of `IsEpxr`. The type repr is still available from the `ConditionalCheckedCastExpr` wrapped by this virtual node, and we will rebuild the original `IsExpr` with the IPA layer. * some logic to get the type of keypath roots has been added to `KeyPathExpr`. This was done to keep the `TypeRepr` to `Type` relation total in the DB, but goes against the design of a dumb extractor. The logic could be moved to QL in the future * in the control flow library, `TypeRepr` children are now ignored. As far as I can tell, there is no runtime evaluation going on in `TypeRepr`s, so it does not make much sense to have control flow through them.
CodeQL
This open source repository contains the standard CodeQL libraries and queries that power GitHub Advanced Security and the other application security products that GitHub makes available to its customers worldwide.
How do I learn CodeQL and run queries?
There is extensive documentation on getting started with writing CodeQL. You can use the CodeQL for Visual Studio Code extension or the interactive query console on LGTM.com (Semmle Legacy product) to try out your queries on any open source project that's currently being analyzed.
Contributing
We welcome contributions to our standard library and standard checks. Do you have an idea for a new check, or how to improve an existing query? Then please go ahead and open a pull request! Before you do, though, please take the time to read our contributing guidelines. You can also consult our style guides to learn how to format your code for consistency and clarity, how to write query metadata, and how to write query help documentation for your query.
License
The code in this repository is licensed under the MIT License by GitHub.
The CodeQL CLI (including the CodeQL engine) is hosted in a different repository and is licensed separately. If you'd like to use the CodeQL CLI to analyze closed-source code, you will need a separate commercial license; please contact us for further help.
Visual Studio Code integration
If you use Visual Studio Code to work in this repository, there are a few integration features to make development easier.
CodeQL for Visual Studio Code
You can install the CodeQL for Visual Studio Code extension to get syntax highlighting, IntelliSense, and code navigation for the QL language, as well as unit test support for testing CodeQL libraries and queries.
Tasks
The .vscode/tasks.json file defines custom tasks specific to working in this repository. To invoke one of these tasks, select the Terminal | Run Task... menu option, and then select the desired task from the dropdown. You can also invoke the Tasks: Run Task command from the command palette.