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Looking at the next component of Hare's self-hosted parser... I'm afraid that its very much in a state of incompletion! There's TODOs everywhere! I'll discuss their proper implementation (written in C) later, but today I'll coarsely describe this "hare::unit" module.
A linked-stack of closed-hashmaps + arrays of variables, alongside how each "scope" was declared. Each variable tracking its type, hash, mutability, name, & type. Alongside routines to manipulate this data.
1/?
There's also a "context" type tracking not just that scopes stack but also a function signature & type store. Its error type isn't very meaningful yet.
There's types representing a successfully type-checked expression, annotating the AST with the implicit types.
There's a "process" routine for branching over all declarations in the dependencies & recursively their expressions, looking up the types & identifiers.
A "scan" routine works similarly, but is even more incomplete.
2/2.1!
There's structs representing typechecked functions & sourcefiles.
And there's a wrapper combining the "process" & "scan" steps.
2.2/2.2 Fin for today! Tomorrow: Unparsing!
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