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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/implicitReceiverAsWhenSubject.dot
Vendored
+6 -6
View File
@@ -51,7 +51,7 @@ digraph implicitReceiverAsWhenSubject_kt {
color=blue
23 [label="Enter block"];
24 [label="Access variable this@R|/test_1|"];
25 [label="Access variable R|kotlin/collections/List.size|"];
25 [label="Access variable R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|"];
26 [label="Exit block"];
}
27 [label="Exit when branch result"];
@@ -59,7 +59,7 @@ digraph implicitReceiverAsWhenSubject_kt {
}
29 [label="Jump: ^test_1 when (this@R|/test_1|) {
($subj$ is R|kotlin/collections/List<*>|) -> {
this@R|/test_1|.R|kotlin/collections/List.size|
this@R|/test_1|.R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|
}
($subj$ is R|kotlin/String|) -> {
this@R|/test_1|.R|kotlin/String.length|
@@ -159,9 +159,9 @@ digraph implicitReceiverAsWhenSubject_kt {
color=blue
59 [label="Enter block"];
60 [label="Access variable R|<local>/x|"];
61 [label="Access variable R|kotlin/collections/List.size|"];
61 [label="Access variable R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|"];
62 [label="Access variable this@R|/test_2|"];
63 [label="Access variable R|kotlin/collections/List.size|"];
63 [label="Access variable R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|"];
64 [label="Exit block"];
}
65 [label="Exit when branch result"];
@@ -169,8 +169,8 @@ digraph implicitReceiverAsWhenSubject_kt {
}
67 [label="Jump: ^test_2 when (lval x: R|kotlin/Any| = this@R|/test_2|) {
($subj$ is R|kotlin/collections/List<*>|) -> {
R|<local>/x|.R|kotlin/collections/List.size|
this@R|/test_2|.R|kotlin/collections/List.size|
R|<local>/x|.R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|
this@R|/test_2|.R|SubstitutionOverride<kotlin/collections/List.size: R|kotlin/Int|>|
}
($subj$ is R|kotlin/String|) -> {
R|<local>/x|.R|kotlin/String.length|