Tya v0.68 Release Notes

v0.68 changes class and interface member declarations from assignment-like = syntax to canonical member-declaration : syntax.

Class and Interface Syntax

Class and interface bodies now use : for member declarations:

interface Named
  name: ->

class User implements Named
  NAME: "guest"
  static count: 0

  initialize: name = "guest" ->
    self.name = name

  name: ->
    self.name

The old class/interface member declaration spelling with = is rejected with a targeted diagnostic. Ordinary top-level bindings, local assignments, and assignments inside method bodies still use =.

Method declarations may be parsed with or without parentheses around the parameter list, but tya format emits the canonical form without parentheses:

class User
  label: name = "guest" ->
    name

Tooling

• tya format emits : for every class and interface member declaration.
• Editor syntax samples and grammars recognize the new member syntax.
• The self-host compiler fixtures are updated so the fixed-point invariant remains covered under the new syntax.

Verification

The release gate is expected to pass:

go test ./... -count=1 -timeout=20m