Dmitry Savvinov
70a1beeff6
Previously, there was receiver of type Nothing, which could case result
of the call to be inferred to Nothing too. This could case bogus
UNREACHABLE_CODE diagnostics in cases like this:
```
fun <T> id(x: T) = x
fun test() {
id(unresolvedReference) // type of statement is 'Nothing'
// ... everything here is marked as unreachable ...
}
```
This commit changes type of receiver for such calls form Nothing to
ErrorType.
72 lines
2.1 KiB
Kotlin
Vendored
72 lines
2.1 KiB
Kotlin
Vendored
// !WITH_NEW_INFERENCE
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package h
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interface A<T> {}
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fun <T> newA(): A<T> = throw Exception()
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interface Z
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fun <T> id(t: T): T = t
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//binary expressions
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//identifier
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infix fun <T> Z.foo(a: A<T>): A<T> = a
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fun test(z: Z) {
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z <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>foo<!> <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>newA<!>()
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val a: A<Int> = id(z foo newA())
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val b: A<Int> = id(z.foo(newA()))
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use(a, b)
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}
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//binary operation expression
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operator fun <T> Z.plus(a: A<T>): A<T> = a
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fun test1(z: Z) {
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id(z <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>+<!> <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>newA<!>())
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<!NI;UNREACHABLE_CODE!>val a: A<Z> = z + newA()<!>
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<!NI;UNREACHABLE_CODE!>val b: A<Z> = z.plus(newA())<!>
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<!NI;UNREACHABLE_CODE!>val c: A<Z> = id(z + newA())<!>
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<!NI;UNREACHABLE_CODE!>val d: A<Z> = id(z.plus(newA()))<!>
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<!NI;UNREACHABLE_CODE!>use(a, b, c, d)<!>
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}
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//comparison operation
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operator fun <T> Z.compareTo(a: A<T>): Int { use(a); return 1 }
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fun test2(z: Z) {
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val a: Boolean = id(z <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!><<!> <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>newA<!>())
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val b: Boolean = id(z < newA<Z>())
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use(a, b)
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}
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//'equals' operation
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fun Z.<!EXTENSION_SHADOWED_BY_MEMBER!>equals<!>(any: Any): Int { use(any); return 1 }
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fun test3(z: Z) {
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z <!NI;EQUALS_MISSING!>==<!> <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>newA<!>()
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z == newA<Z>()
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id(z <!NI;EQUALS_MISSING!>==<!> <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>newA<!>())
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id(z == newA<Z>())
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id(z === <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>newA<!>())
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id(z === newA<Z>())
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}
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//'in' operation
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fun test4(collection: Collection<A<*>>) {
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id(<!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>newA<!>() in collection)
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id(newA<Int>() in collection)
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}
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//boolean operations
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fun <T> toBeOrNot(): Boolean = throw Exception()
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fun test5() {
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if (<!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>toBeOrNot<!>() && <!OI;TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>toBeOrNot<!>()) {}
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if (toBeOrNot<Int>() && toBeOrNot<Int>()) {}
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}
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//use
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fun use(vararg a: Any?) = a |