Also improve an error message in `IrType.erasedUpperBound`, which seems
like a frequent first place where the JVM IR backend crashes in case an
error type has made it past psi2ir.
This will help in diagnosing problems such as KT-45016.
Because generateDefaultGetterBody/generateDefaultSetterBody reference
the property's backing field, which in case of extension properties
leads to an error "Unbound symbols not allowed" because extension
property cannot have a backing field.
In some way, this check is similar to the `isExpect` check in
`generatePrimaryConstructor`.
This has no effect on correct code because extension properties cannot
have a backing field anyway and that is checked separately. But this
function is used in psi2ir to determine whether or not to create a
backing field for a property, and in case the code where the property is
declared is unreachable like in KT-44496 and has no explicit getter or
setter, it would previously return true for extension properties, which
on JVM would result in an actual field in the class file, which made no
sense.
After this change, the compiler will actually crash with an exception in
the IR validaton step because the symbol for the field is unbound. That
is a bit better than proceeding to generate potentially invalid
bytecode, but of course a proper fix would be to report an error in the
frontend.
#KT-44496
Pass parentContext to SamWrapperCodegen from the outside instead of
using the one from parentCodegen. The difference is that in case of an
inline lambda, we're creating an InlineLambdaContext whose parent is a
ClosureContext, but the codegen for that lambda has that latter
ClosureContext as its context. So the getNonInlineOuterContext call in
SamWrapperCodegen.generateInnerClassInformation wasn't able to identify
that this is a context of a lambda that needs to be skipped, and
generated it as EnclosingMethod, which caused Java reflection to fail
because once that lambda was inlined, it was removed and thus didn't
make it to runtime.
#KT-44827 Fixed
Add a new module 'backend.jvm.entrypoint' which depends on psi2ir and
contains code that runs psi2ir + JVM IR backend with serialization
implementations.
Hopefully this will allow to compile these modules in parallel and
reduce the build time.
Move most of the implementation from JvmGeneratorExtensions to
JvmGeneratorExtensionsImpl. The latter implements
StubGeneratorExtensions from psi2ir, and doing so helps to remove direct
dependency on this part of psi2ir from backend.
From now on sealed declarations get resolved with the help of
FirIdeSealedHierarchyProcessor. This change entails correct IDE side
check for sealed when exhaustiveness.
Alexander Udalov