https://github.com/kadircet requested changes to this pull request.
instead of introducing a new concept of `ProjectModulesCache` and requiring
each `ProjectModules` implementation to know about it and work with it; what
about introducing a:
```cpp
class CachingProjectModules : public ProjectModules {
public:
CachingProjectModules(GlobalCompilationDatabase &CDB);
// Implements rest of the operations with a cache overlay.
...;
// Whenever cache is invalid/empty, queries `CDB` for underlying
`ProjectModules`
// and updates/builds a cache using it.
};
```
into `ModulesBuilder.cpp` and have an instance of this in `ModulesBuilderImpl`?
That way we can centralize how the caching will work and won't need to maintain
multiple implementations that play with it.
As for cache validation, i think it's fine to invalidate based on file contents
and whenever there's a mismatch we can query `CDB` again.
WDYT?
https://github.com/llvm/llvm-project/pull/125988
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