Slava Pestov c360c82850 AST: Automatically create the 'self' parameter when needed ...

Parsed declarations would create an untyped 'self' parameter;
synthesized, imported and deserialized declarations would get a
typed one.

In reality the type, if any, depends completely on the properties
of the function in question, so we can just lazily create the
'self' parameter when needed.

If the function already has a type, we give it a type right there;
otherwise, we check if a 'self' was already created when we
compute a function's type and set the type of 'self' then.

2018-08-25 10:44:55 -07:00

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