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Defining flexible type semantic equality through subtyping

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This commit is contained in:
Andrey Breslav
2014-10-14 08:07:55 +04:00
parent f41a8d2c00
commit 3453809b4b
6 changed files with 41 additions and 4 deletions
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core/descriptors/src/org/jetbrains/jet/lang/types/checker/TypeCheckingProcedure.java
+1 -2
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@@ -71,8 +71,7 @@ public class TypeCheckingProcedure {
public boolean equalTypes(@NotNull JetType type1, @NotNull JetType type2) {
if (TypesPackage.isFlexible(type1)) {
if (TypesPackage.isFlexible(type2)) {
return equalTypes(TypesPackage.flexibility(type1).getLowerBound(), TypesPackage.flexibility(type2).getLowerBound())
&& equalTypes(TypesPackage.flexibility(type1).getUpperBound(), TypesPackage.flexibility(type2).getUpperBound());
return !type1.isError() && !type2.isError() && isSubtypeOf(type1, type2) && isSubtypeOf(type2, type1);
}
return heterogeneousEquivalence(type2, type1);
}