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allow generic types to be assigned to inherited types with compatible type arguments

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This commit is contained in:
Dave Holoway
2020-06-07 22:52:37 +01:00
parent 6bcdecee07
commit 49b5480870
1 changed files with 2 additions and 1 deletions
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3
langserver/java/body-parser3.js
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@@ -1210,7 +1210,8 @@ function isTypeAssignable(dest_type, value_type) {
is_assignable = valid_raw_types.includes(dest_type);
if (!is_assignable) {
// generic types are also assignable to compatible wildcard type bounds
if (dest_type.rawTypeSignature === value_type.rawTypeSignature) {
const raw_type = valid_raw_types.find(rt => rt.rawTypeSignature === dest_type.rawTypeSignature);
if (raw_type instanceof CEIType && raw_type.typevars.length === value_type.typevars.length) {
is_assignable = dest_type.typevars.every((dest_tv, idx) => isTypeArgumentCompatible(dest_tv, value_type.typevars[idx].type));
}
}