3 Commits

Author	SHA1	Message	Date
giles	f34e55aa9b	Add Scheme forms: named let, letrec, dynamic-wind, three-tier equality ... Spec (eval.sx, primitives.sx): - Named let: (let loop ((i 0)) body) — self-recursive lambda with TCO - letrec: mutually recursive local bindings with closure patching - dynamic-wind: entry/exit guards with wind stack for future continuations - eq?/eqv?/equal?: identity, atom-value, and deep structural equality Implementation (evaluator.py, async_eval.py, primitives.py): - Both sync and async evaluators implement all four forms - 33 new tests covering all forms including TCO at 10k depth Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>	2026-03-06 01:11:31 +00:00
giles	a9526c4fa1	Update reference SX spec to match sx.js macros branch (CSSX, dict literals, new primitives) ... - eval.sx: Add defstyle, defkeyframes, defhandler special forms; add ho-for-each - parser.sx: Add dict {...} literal parsing and quasiquote/unquote sugar - primitives.sx: Add parse-datetime, split-ids, css, merge-styles primitives - render.sx: Add StyleValue handling, SVG filter elements, definition forms in render, fix render-to-html to handle HTML tags directly - bootstrap_js.py: Add StyleValue type, buildKeyframes, isEvery platform helper, new primitives (format-date, parse-datetime, split-ids, css, merge-styles), dict/quasiquote parser, expose render functions as primitives - sx-ref.js: Regenerated — 132/132 tests passing Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>	2026-03-05 10:17:28 +00:00
giles	235428628a	Add reference SX evaluator written in s-expressions ... Meta-circular evaluator: the SX language specifying its own semantics. A thin bootstrap compiler per target (JS, Python, Rust) reads these .sx files and emits a native evaluator. Files: - eval.sx: Core evaluator — type dispatch, special forms, TCO trampoline, lambda/component/macro invocation, higher-order forms - primitives.sx: Declarative specification of ~80 built-in pure functions - render.sx: Three rendering modes (DOM, HTML string, SX wire format) - parser.sx: Tokenizer, parser, and serializer specification Platform-specific concerns (DOM ops, async I/O, HTML emission) are declared as interfaces that each target implements. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>	2026-03-05 09:31:40 +00:00