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Change "most specific return type" definition for fake overrides.

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Given overridden descriptors D = d[i].
1. Find D*, subset of D:
  returnType(d* from D*) <: returnType(d) for each d from D.
  Always prefer var to val.
2. Prefer non-flexible return type to flexible.

Check for var/val overrides properly
(NB: this will report PROPERTY_TYPE_MISMATCH_ON_OVERRIDE
for all properties, not just overrides involving vars as it was before).
This commit is contained in:
Dmitry Petrov
2015-12-07 17:16:14 +03:00
parent 594039ac42
commit 94bea54db3
12 changed files with 312 additions and 48 deletions
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compiler/testData/diagnostics/tests/delegation/Delegation_ClashingFunctions.kt
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+4 -4
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@@ -10,9 +10,9 @@ interface Three {
public fun foo(): String
}
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test123<!>(val v1: One, val v2: Two, val v3: Three) : One by v1, Two by v2, Three by v3 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test132<!>(val v1: One, val v2: Two, val v3: Three) : One by v1, Three by v3, Two by v2 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED, RETURN_TYPE_MISMATCH_ON_INHERITANCE!>class Test123<!>(val v1: One, val v2: Two, val v3: Three) : One by v1, Two by v2, Three by v3 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED, RETURN_TYPE_MISMATCH_ON_INHERITANCE!>class Test132<!>(val v1: One, val v2: Two, val v3: Three) : One by v1, Three by v3, Two by v2 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test312<!>(val v1: One, val v2: Two, val v3: Three) : Three by v3, One by v1, Two by v2 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test321<!>(val v1: One, val v2: Two, val v3: Three) : Three by v3, Two by v2, One by v1 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test231<!>(val v1: One, val v2: Two, val v3: Three) : Two by v2, Three by v3, One by v1 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test213<!>(val v1: One, val v2: Two, val v3: Three) : Two by v2, One by v1, Three by v3 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED, RETURN_TYPE_MISMATCH_ON_INHERITANCE!>class Test231<!>(val v1: One, val v2: Two, val v3: Three) : Two by v2, Three by v3, One by v1 { }
<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED, MANY_IMPL_MEMBER_NOT_IMPLEMENTED, RETURN_TYPE_MISMATCH_ON_INHERITANCE!>class Test213<!>(val v1: One, val v2: Two, val v3: Three) : Two by v2, One by v1, Three by v3 { }