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FIR checker: substitute type parameters in dispatch receiver type

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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
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compiler/fir/analysis-tests/testData/resolveWithStdlib/components.fir.txt
Vendored
+1 -1
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@@ -20,7 +20,7 @@ FILE: components.kt
public final fun foo(list: R|kotlin/collections/List<D>|): R|kotlin/Unit| {
{
lval <iterator>: R|kotlin/collections/Iterator<D>| = R|<local>/list|.R|SubstitutionOverride<kotlin/collections/List.iterator: R|kotlin/collections/Iterator<D>|>|()
while(R|<local>/<iterator>|.R|kotlin/collections/Iterator.hasNext|()) {
while(R|<local>/<iterator>|.R|SubstitutionOverride<kotlin/collections/Iterator.hasNext: R|kotlin/Boolean|>|()) {
lval <destruct>: R|D| = R|<local>/<iterator>|.R|SubstitutionOverride<kotlin/collections/Iterator.next: R|D|>|()
lval x: R|kotlin/Int| = R|<local>/<destruct>|.R|/D.component1|()
lval y: R|kotlin/String| = R|<local>/<destruct>|.R|/D.component2|()