- get primitive returns nil for type mismatches (list+string) instead
of raising — matches JS/Python behavior, fixes find-nav-match errors
- scope-peek, collect!, collected, clear-collected! registered as real
primitives in sx_primitives table (not just env bindings) so the CEK
step-sf-context can find them via get-primitive
- step-sf-context checks scope-peek hashtable BEFORE walking CEK
continuation — bridges aser's scope-push!/pop! with CEK's context
- context, emit!, emitted added to SPECIAL_FORM_NAMES and handled in
aser-special (scope operations in aser rendering mode)
- sx-context NativeFn for VM-compiled code paths
- VM execution errors no longer mark functions as permanently failed —
bytecode is correct, errors are from runtime data
- kbd, samp, var added to HTML_TAGS + sx-browser.js rebuilt
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Compiler fixes:
- Upvalue re-lookup returns own position (uv-index), not parent slot
- Spec: cek-call uses (make-env) not (dict) — OCaml Dict≠Env
- Bootstrap post-processes transpiler Dict→Env for cek_call
VM runtime fixes:
- compile_adapter evaluates constant defines (SPECIAL_FORM_NAMES etc.)
via execute_module instead of wrapping as NativeFn closures
- Native primitives: map-indexed, some, every?
- Nil-safe HO forms: map/filter/for-each/some/every? accept nil as empty
- expand-components? set in kernel env (not just VM globals)
- unwrap_env diagnostic: reports actual type received
sx-page-full command:
- Single OCaml call: aser-slot body + render-to-html shell
- Eliminates two pipe round-trips (was: aser-slot→Python→shell render)
- Shell statics (component_defs, CSS, pages_sx) cached in Python,
injected into kernel once, referenced by symbol in per-request command
- Large blobs use placeholder tokens — Python splices post-render,
pipe transfers ~51KB instead of 2MB
Performance (warm):
- Server total: 0.55s (was ~2s)
- aser-slot VM: 0.3s, shell render: 0.01s, pipe: 0.06s
- kwargs computation: 0.000s (cached)
SX_STANDALONE mode for sx_docs dev (skips fragment fetches).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Added vm-compile command: iterates env, compiles lambdas to bytecode,
replaces with NativeFn VM wrappers (with CEK fallback on error).
Tested: 3/109 compile, reduces CEK steps 23%.
Disabled auto-compile in production — the compiler doesn't handle
closures with upvalues yet, and compiled functions that reference
dynamic env vars crash. Infrastructure stays for when compiler
handles all SX features.
Also: added set-nth! and mutable-list primitives (needed by
compiler.sx for bytecode patching). Fixed compiler.sx to use
mutable lists on OCaml (ListRef for append!/set-nth! mutation).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
spec-introspect.sx: pure SX functions that read, parse, and analyze
spec files. No Python. The spec IS data — a macro transforms it into
explorer UI components.
- spec-explore: reads spec file via IO, parses with sx-parse, extracts
sections/defines/effects/params, produces explorer data dict
- spec-form-name/kind/effects/params/source: individual extractors
- spec-group-sections: groups defines into sections
- spec-compute-stats: aggregate effect/define counts
OCaml kernel fixes:
- nth handles strings (character indexing for parser)
- ident-start?, ident-char?, char-numeric?, parse-number: platform
primitives needed by spec/parser.sx when loaded at runtime
- _find_spec_file: searches spec/, web/, shared/sx/ref/ for spec files
83/84 Playwright tests pass. The 1 failure is client-side re-rendering
of the spec explorer (the client evaluates defpage content which calls
find-spec — unavailable on the client).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
SX-to-OCaml transpiler (transpiler.sx) generates sx_ref.ml (~90KB, ~135
mutually recursive functions) from the spec evaluator. Foundation tests
all pass: parser, primitives, env operations, type system.
Key design decisions:
- Env variant added to value type for CEK state dict storage
- Continuation carries optional data dict for captured frames
- Dynamic var tracking distinguishes OCaml fn calls from SX value dispatch
- Single let rec...and block for forward references between all defines
- Unused ref pre-declarations eliminated via let-bound name detection
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
