FIR checker: substitute type parameters in dispatch receiver type

Consider the following code:

```
fun test(a: List<String>) {
  a.first()
}
```

The dispatch receiver type of `first` in this case is `List<T>` before
this change. After this change, it's `List<String>`.

In addition, this change also replace the dispatch receiver type with
the more specific type if available. For example, consider the following

```
class MyList: ArrayList<String>()

fun test(a: MyList) {
  a.get(0)
}
```
The dispatch receiver type of `get` is `MyList`, instead of
`ArrayList<String>`. That is, a fake override is created in this case.
This commit is contained in:
Tianyu Geng
2021-08-06 14:56:37 -07:00
committed by teamcityserver
parent c047adbaec
commit 765cad8448
61 changed files with 342 additions and 145 deletions
@@ -32,12 +32,12 @@ FILE: smartcastToNothing.kt
lvar s: R|A?| = Null(null)
{
lval <iterator>: R|kotlin/collections/Iterator<kotlin/Nothing>| = R|<local>/results|.R|SubstitutionOverride<kotlin/collections/List.iterator: R|kotlin/collections/Iterator<kotlin/Nothing>|>|()
while(R|<local>/<iterator>|.R|kotlin/collections/Iterator.hasNext|()) {
while(R|<local>/<iterator>|.R|SubstitutionOverride<kotlin/collections/Iterator.hasNext: R|kotlin/Boolean|>|()) {
lval result: R|kotlin/Nothing| = R|<local>/<iterator>|.R|SubstitutionOverride<kotlin/collections/Iterator.next: R|kotlin/Nothing|>|()
R|<local>/s| = R|<local>/result|
when () {
R|<local>/result|.<Unresolved name: b># -> {
break@@@[R|<local>/<iterator>|.R|kotlin/collections/Iterator.hasNext|()]
break@@@[R|<local>/<iterator>|.R|SubstitutionOverride<kotlin/collections/Iterator.hasNext: R|kotlin/Boolean|>|()]
}
}