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go: parse.sx — type assertion v.(T) + minimal type parser + 9 tests [nothing]
Postfix '.' branch now peeks at the next token to disambiguate:
  .ident   →  selector / member access  (list :select OBJ "field")
  .(TYPE)  →  type assertion            (list :assert OBJ TYPE)

New gp-parse-type covers the minimum types needed for assertions:
  name        →  (list :ty-name "int")
  pkg.Name    →  (list :ty-sel "pkg" "Name")
  *T  / **T   →  (list :ty-ptr (list :ty-ptr ...))

Full type grammar — slice []T, array [N]T, map[K]V, chan, func,
struct, interface — is a separate Phase 2 sub-deliverable.

Type AST shapes are Go-specific tagged lists; the canonical AST kit
has no type-system primitives at all yet. Worth a richer kit
discussion once Phase 3 (bidirectional type checker) lands and the
sister plan static-types-bidirectional has a real surface to react to.

parse 70/70, total 199/199.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-27 07:57:29 +00:00
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