Kevin Eady 4ae9519343 Update grammar, parser, semantic analyzer for classes; skeleton codegen and executor (#688) ...

* Update grammar

* WIP with tracking classes
- Refactor AvailableUserFunction to AvailableParseTree
- Track ClassDeclarationContexts similarly to user functions

* Skeleton AST + tracking

* Finish up AST building

* Implement AST building
- TODO decide better name for UserFunctionBuilder/Visitor,
since it does both user functions and classes

* Update Prettifier

* Crude, first-round semantic analysis + codegen
- Currently, no real difference from regular functions

* Move class var statements to top level statements

* Add semantic analysis for base class existence

* Introduce ClassInstance AST node for generating `this` parameter

* Skeleton create class instance instruction

* Default ctor; 'this' byref; Error if multiple same baseclass

* Update grammar for scoped funcrefs and scoped identifiers

* Update prettifier, builders for scoped funcref, identifiers

* Fix CI issues
- Styling
- Shadowing

* Add grammar tests for scope; Remove scope from switch label

* Final draft todos
- Rename `VarStatement::class_name` to `scope`
- Comment why identifiers dont have scopes in enum declarations
- Remove code comment

2024-10-10 18:06:04 +02:00

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