Resolve template defaults referencing other templates in composite types - #6329
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`ClassReflection::typeMapFromList()` only substituted a sibling template reference when the default was exactly a bare `TemplateType`. So `@template TResult = TRelated` resolved correctly, but a default that merely contained the reference - `= TRelated|null`, `= list<TRelated>`, or an array shape - kept the unresolved template and leaked it into inferred types. Traverse the type instead, substituting any nested reference to a template of the same class. Bounds are deliberately not descended into, because they may be self-referential (`@template T of Foo<T>`) and traversing them expands without bound. The substitution has to apply to explicitly passed arguments as well as to `$tag->getDefault()`, because TypeNodeResolver already pads missing arguments with the raw defaults before this code runs.
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Hello!
ClassReflection::typeMapFromList()only substituted a sibling template reference when the default was exactly a bareTemplateType. So@template TResult = TRelatedresolved correctly, but a default that merely contained the reference -= TRelated|null,= list<TRelated>, or an array shape - kept the unresolved template and leaked it into inferred types.Traverse the type instead, substituting any nested reference to a template of the same class. Bounds are deliberately not descended into, because they may be self-referential (
@template T of Foo<T>) and traversing them expands without bound.The substitution has to apply to explicitly passed arguments as well as to
$tag->getDefault(), because TypeNodeResolver already pads missing arguments with the raw defaults before this code runs.Thanks!