2 Commits

Author	SHA1	Message	Date
giles	0dc7e1599c	spec: match special form — ADT constructor pattern matching (20 tests) ... Extends match-pattern in spec/evaluator.sx with an ADT case: when the pattern is (CtorName var...) and the value is an ADT dict (:_adt true), check :_ctor matches, arity matches, then recursively bind field patterns. Supports nested patterns, wildcard _, variable binding, and zero-arg ctors. Changes step-sf-match to route no-clause errors through raise-eval-frame instead of direct error, allowing guard to catch non-exhaustive matches. 40/40 ADT tests pass (20 define-type + 20 match). Zero regressions. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-04-26 18:16:16 +00:00
giles	6c87210728	spec: define-type special form — constructors, predicates, accessors (20 tests) ... Adds sf-define-type via register-special-form! in spec/evaluator.sx. ADT values are dicts {:_adt true :_type "T" :_ctor "C" :_fields (list ...)}. Each define-type call registers: ctor functions with arity checking, Name? type predicate, Ctor? constructor predicates, Ctor-field positional accessors, and populates *adt-registry* dict with type→[ctor-names] mapping. 20/20 JS tests pass in spec/tests/test-adt.sx. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-04-26 17:56:50 +00:00