35b366ace7
This patch contains changes from 002d471a4a3cd8b429e4ca7c84fd54a642e50e4c, in addition to a bug fix that added a virtual destructor to `CompletionContextHandler` The original changes in the orginal commit piggybacks on clang's semantic modules to enable semantic completion. In particular, we use `CodeCompletionContext` to differentiate two types of code completion. We also extract the relevant type information from it.