> Is there anything else that I am missing?
Sadly, yes. Consider the following snippet:
class A {
function method(): B;
}
class B extends A {
function method(): C;
}
class C extends B {}
When checking that B::method satisfies the requirements of A::method
it must know if C extends B. At the time we check if B::method
satisfies A::method, C will *not* yet be in the symbol table.
You need to adjust the passes over the code to register symbols and
their declared relationships, and then in a separate pass validate
them. After that if the class isn't found then you trigger an
autoload.
It's doable, it just hasn't been done.
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