Replace the class keyword with the type keyword

[yorickpeterse]

Description

In #778 I'm introducing support for user-defined stack allocated types. In pretty much all languages out there that have a notion of classes, the class keyword is typically used for a heap allocated type that you address through a pointer, and something like a struct keyword is used (if supported at all) for stack types.

This means that seeing class inline Foo { ... } is a bit odd, because class might have you believe it's a heap type, while inline means it's in fact a stack type.

To resolve this, we'll replace the class keyword with the type keyword. So instead of this:

class User { ... }
class inline Number { ... }

You'd write the following:

type User { ... }
type inline Number { ... }

For traits we'll continue to use the trait keyword as there's no benefit to changing it.

TODO

• Support both class and type at the parser level
• Update the Tree sitter grammar to support both class and type
• Update Vim syntax file
• Update VS Code extension
• Update the code formatter to replace class with type automatically
• Update the documentation

Related work

No response