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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/resolve/smartcasts/receivers/implicitReceivers.dot
Vendored
+3 -3
View File
@@ -547,7 +547,7 @@ digraph implicitReceivers_kt {
subgraph cluster_52 {
color=blue
202 [label="Enter block"];
203 [label="Access variable R|kotlin/collections/List.size|"];
203 [label="Access variable R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|"];
204 [label="Exit block"];
}
205 [label="Exit when branch result"];
@@ -555,7 +555,7 @@ digraph implicitReceivers_kt {
}
207 [label="Jump: ^test_5 when () {
(this@R|/test_5| is R|kotlin/collections/List<*>|) -> {
this@R|/test_5|.R|kotlin/collections/List.size|
this@R|/test_5|.R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|
}
(this@R|/test_5| is R|kotlin/String|) -> {
this@R|/test_5|.R|kotlin/String.length|
@@ -612,7 +612,7 @@ digraph implicitReceivers_kt {
212 [label="Enter block"];
213 [label="Access variable this@R|/test_6|"];
214 [label="Type operator: (this@R|/test_6| as R|kotlin/collections/List<*>|)"];
215 [label="Access variable R|kotlin/collections/List.size|"];
215 [label="Access variable R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|"];
216 [label="Access variable this@R|/test_6|"];
217 [label="Type operator: (this@R|/test_6| as R|kotlin/String|)"];
218 [label="Access variable R|kotlin/String.length|"];