2dd8665c46
This change begins to lay the groundwork for doing semantic analysis and lowering to the cloud target's representation. In particular: * Split the mu/schema package. There is now mu/ast which contains the core types and mu/encoding which concerns itself with JSON and YAML serialization. * Notably I am *not* yet introducing a second AST form. Instead, we will keep the parse tree and AST unified for the time being. I envision very little difference between them -- at least for now -- and so this keeps things simpler, at the expense of two downsides: 1) the trees will be mutable (which turns out to be a good thing for performance), and 2) some fields will need to be ignored during de/serialization. We can always revisit this later when and if the need to split them arises. * Add a binder phase. It is currently a no-op. |
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