Operation Generation

[sunjay]

Be able to generate operations for every part of the AST.

• [x] block
  • [x] supports last statement as return type (using .pop() on the provided statements)
• [x] statement
  • [x] declaration
  • [x] assignment
  • [x] while loop
• [ ] expression
  • [x] identifier
  • [x] string literal
    • [ ] tests
  • [x] numeric literal
    • [ ] tests
  • [x] call
  • [ ] access
  • [x] branch
• [ ] primitives
  • [ ] boolean
    • [x] boolean and/or/not (#53)
    • [ ] comparison operators (#52)
  • [x] array
    • [x] Split ScopeItem into ScopeType and ScopeItem
    • [x] Make two separate hash tables in scope for types and for items
  • [x] u8 (increment, decrement)
• [ ] stdio (See spec in https://github.com/brain-lang/brain/issues/66)
  • [x] stdout
  • [ ] stdin