In case internal inline function references private top level function
after inline such function (T.L.P.) couldn't be referenced
in klib and IC cache. So create internally visible accessors for P.T.L.
function similar to what JVM backend does.
- add box test
This change touches the following diagnostics to make them behave closer
to FE1.0
* SUPER_NOT_AVAILABLE
* SUPER_IS_NOT_AN_EXPRESSION
* INSTANCE_ACCESS_BEFORE_SUPER_CALL
* NOT_A_SUPERTYPE
Other than tweaking the diagnostics, this change also alters resolution
by consider marking `super` with mismatched type parameter as
errorenous. As a result, the following code no longer resolves.
```
class A: B() {
fun test() {
super<String>.length
// ^^^^^^ FIR currently resolves this to `String.length`.
// With this change, `length` becomes unresolved
// instead
}
}
```
Also, now we report `UNRESOLVED_LABEL` on unresolved label on `super`
reference, though FE1.0 reports `UNRESOLVED_REFERENCE`.
All the errors above are reported as ConeDiagnostics and hence some
checkers are deleted.
In addition, it also suppresses more downstream (mostly unresolved)
errors if the receiver has errors. FE1.0 doesn't do it for all the cases
we have here. But it seems nicer to reduce these "redundant" unresolved
errors.
Consider an atomic reference `i`, it's FIR representation is
- FirQualifiedAccessExpression
- calleeReference : FirNamedReference
Currently, both of the above FIR elements uses the same PSI element as
the source. Such problems are not present with `this` or `super` because
we manually mark them as `ExplicitThisOrSuperReference`.
This change generalizes the previous `ExplicitThisOrSuperReference` as
`ReferenceInAtomicQualifiedAccess` and fixes it for more cases.
First, the order of arguments is swapped.
Second, projection erasure for argType was too aggressive. We should
instead retain the projections that are under an invariant position.
FE1.0 only reports SENSELESS_COMPARISON if one of the operand is `null`.
This change makes FIR reports also in case one of the operand has type
`Nothing?`.
In addition, fix handling of type alias in ConeTypeContext#isNullableType
In order to make resolution still work for members not available from
`Nothing`, we track the type without `Nothing?` and use that for
resolution instead.
The logic should clear back aliases as well. To ensure all back aliases
don't lose any information, statements on the original variable are
copied over to its aliases.
Previously, if user compares an `it<String, Int>` with `String`, the
checker reports it since the flattened types `[String, Int, Int]` are
incompatible. But technically, before flattening, the intersection type
actually contain the other side, so they should really be compatible.
1. throw goes to catches instead of main exist block
2. return goes via finally (single level only supported atm)
3. collect non-direct return to retrieve all return expressions easier
Ilya Kirillov