Feature

Core Feature Proposal

This is a proposal which specifies the core features of the language. Those features will be implemented first. All other features are implemented later.

Core Features

• contract
• arithmetic operations (+/-/*///%)
• comparison operattions (<, >, <=, >=, ==, !=)
• negation (!)
• variable declaration without structs, map, array (int, bool, string, address, a.s.o.)
• function declaration
• return statements (multiple)
• structural statements (if, else a.s.o)
• call statement
• variable access
• assignment

Questions

• What do you think about version? I guess it's not required as a core feature and easy to add later - Can be postponed.
• Is the constructor a core feature? It is really helpful (e.g. set owner) but is it required as core feature? - No.
• Is it easier to implement single return values first or should we directly start with multiple return values? - Do multiple right away.
• Should we implement default values in the core version? - No, as dynamic values are possible.

Thomas - "For me, Core is really just creating a contract with a function that adds two integers and returns it."

Additional Features (sorted by implementation order)

1. Function Call ✅
2. VM support Multiple Return values ✅
3. Designator ✅
4. this keyword ✅
5. Constructor ✅
6. Array
7. Map
8. Struct ✅
9. address
10. Expressions (Missing)
11. Else If Support
12. Builtins -> msg, value, block a.s.o.
13. For
14. Foreach
15. Annotations
16. Builtin Errors
17. Interfaces
18. Custom Errors