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I've been working on static analysis products for almost a decade and I must admit I am not impressed with your "AST visitor approach" for creating custom checks. It seems you are doing the same as SonarQube.

However I am curious about your claim " Unlike any other code checker out there, we’ve conceived code error as patterns, not as rules." , could you be more specific?

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Thanks for the feedback! Our "AST visitor" approach is currently not very different compared to existing methods. However, we store the whole AST (including earlier version of the code) in a graph for fast retrieval and add a lot of context information to each vertex in the code tree. Having the code patterns and faulty code in a database, we can make use of user-feedback to (semi-)automatically improve our code patterns for a given error using example-based learning. In that sense the algorithm is much more adaptable than existing technologies.

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