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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/problems/compilerPhase.fir.txt
Vendored
+2 -2
View File
@@ -13,9 +13,9 @@ FILE: compilerPhase.kt
}
public final inline fun <R, D> R|PhaserState<D>|.downlevel(nlevels: R|kotlin/Int|, block: R|() -> R|): R|R| {
this@R|/downlevel|.R|/PhaserState.depth| = this@R|/downlevel|.R|/PhaserState.depth|.R|kotlin/Int.plus|(R|<local>/nlevels|)
this@R|/downlevel|.R|SubstitutionOverride</PhaserState.depth: R|kotlin/Int|>| = this@R|/downlevel|.R|SubstitutionOverride</PhaserState.depth: R|kotlin/Int|>|.R|kotlin/Int.plus|(R|<local>/nlevels|)
lval result: R|R| = R|<local>/block|.R|SubstitutionOverride<kotlin/Function0.invoke: R|R|>|()
this@R|/downlevel|.R|/PhaserState.depth| = this@R|/downlevel|.R|/PhaserState.depth|.R|kotlin/Int.minus|(R|<local>/nlevels|)
this@R|/downlevel|.R|SubstitutionOverride</PhaserState.depth: R|kotlin/Int|>| = this@R|/downlevel|.R|SubstitutionOverride</PhaserState.depth: R|kotlin/Int|>|.R|kotlin/Int.minus|(R|<local>/nlevels|)
^downlevel R|<local>/result|
}
public abstract interface CompilerPhase<in Context : R|CommonBackendContext|, Input, Output> : R|kotlin/Any| {