square / anvil

A Kotlin compiler plugin to make dependency injection with Dagger 2 easier.
Apache License 2.0
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use the resolved value of `const` arguments in propagated annotation arguments #940

Closed RBusarow closed 3 months ago

RBusarow commented 3 months ago

We have a good deal of logic around parsing out the primitive values of const parameters, but that logic is not recursive. So, if a const references another const in its initializer, we wound up just copying the text of that initializer into the generated annotations, as though it's just a String. This problem was isolated to the PSI side of parsing, since the Descriptor APIs are able to parse out the final, primitive value. Our type resolution logic always defaults to the PSI models.

Now, when we need to parse out the primitive values from a PropertyReference, we first try to resolve the Descriptor version with a PropertyDescriptor. That isn't possible if the annotation is referencing a const property that was generated in the same round of compilation. In that event, the parsing will fall back to the PSI models. Anvil doesn't actually generate a const and then use it in an annotation, so this seems like a reasonable compromise.

fixes #938