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7 Commits

Author SHA1 Message Date
giles
577d09f443 Fix vm-global-get in native OCaml VM + transpiled VM ref 
The previous commit fixed lib/vm.sx (SX spec) but the server uses
sx_vm.ml (hand-maintained native OCaml) and sx_vm_ref.ml (transpiled).
Both had the same globals-first lookup bug. Now all three implementations
check closure env before vm.globals, matching vm-global-set.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 12:14:30 +00:00
giles
4baed1853c OCaml runtime: R7RS parameters, VM closure introspection, import suspension 
- R7RS parameter primitives (make-parameter, parameter?, parameterize support)
- VM closure get_val introspection (vm-code, vm-upvalues, vm-name, vm-globals)
- Lazy list caching on vm_code for transpiled VM performance
- VM import suspension: check_io_suspension + resume_module for browser lazy loading
- 23 new R7RS tests (parameter-basic, parameterize-basic, syntax-rules-basic)
- Playwright bytecode-loading spec + WASM rebuild

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 18:48:51 +00:00
giles
efd0d9168f Step 7d complete: exhaustive match checking + evaluator cleanup 
Match exhaustiveness analysis:
- check-match-exhaustiveness function in evaluator.sx
- lint-node in tree-tools.sx checks match forms during format-check
- Warns on: no wildcard/catch-all, boolean missing true/false case
- (match x (true "yes")) → "match may be non-exhaustive"

Evaluator cleanup:
- Added missing step-sf-callcc definition (was in old transpiled output)
- Added missing step-sf-case definition (was in old transpiled output)
- Removed protocol functions from bootstrap skip set (they transpile fine)
- Retranspiled VM (bootstrap_vm.py) for compatibility

2650 tests pass (+5 from new features).

All Step 7 features complete:
  7a: ->> |> as-> pipe operators
  7b: Dict patterns, &rest, let-match destructuring
  7c: define-protocol, implement, satisfies?
  7d: Exhaustive match checking

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 15:43:57 +00:00
giles
e46cdf3d4d Wire transpiled VM as active execute_module — 2644 tests pass 
The transpiled VM (sx_vm_ref.ml, from lib/vm.sx) is now the ACTIVE
bytecode execution engine. sx_server.ml and sx_browser.ml call
Sx_vm_ref.execute_module instead of Sx_vm.execute_module.

Results:
- OCaml tests: 2644 passed, 0 failed
- WASM tests: 32 passed, 0 failed
- Browser: zero errors, zero warnings, islands hydrate
- Server: pages render, JIT compiles, all routes work

The VM logic now lives in ONE place: lib/vm.sx (SX).
OCaml gets it via transpilation (bootstrap_vm.py).
JS/browser gets it via bytecode compilation (compile-modules.js).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 13:34:11 +00:00
giles
54ee673050 Transpiled VM compiles with real native preamble 
bootstrap_vm.py preamble now has real implementations for all 48
native OCaml functions: stack ops, frame access, upvalue capture,
closure creation, JIT dispatch, CEK fallback, env walking.

The transpiled sx_vm_ref.ml (25KB) compiles cleanly alongside
sx_vm.ml. 7 logic functions transpiled from vm.sx:
  vm-call, vm-resolve-ho-form, vm-call-external,
  vm-run, vm-step, vm-call-closure, vm-execute-module

Next: wire callers to use Sx_vm_ref instead of Sx_vm.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 13:23:27 +00:00
giles
cd61c049e3 vm.sx feature parity: JIT dispatch, active VM tracking, CEK fallback 
Add missing features to lib/vm.sx that sx_vm.ml has:
- *active-vm* mutable global for HO primitive callback VM reuse
- *jit-compile-fn* platform-settable JIT compilation hook
- try-jit-call: check lambda-compiled, attempt JIT, fallback to CEK
- vm-call: VmClosure→push-frame, Lambda→try-jit, Component→CEK
- vm-call-closure: save/restore *active-vm* around execution
- vm-push-frame: refactored to use accessor functions
- cek-call-or-suspend: preamble-provided CEK interop

Transpiled output (sx_vm_ref.ml) now has 12 functions (was 9):
  *active-vm*, *jit-compile-fn*, try-jit-call, vm-call,
  vm-resolve-ho-form, vm-call-external, env-walk, env-walk-set!,
  vm-run, vm-step, vm-call-closure, vm-execute-module

48 preamble functions (native OCaml type access).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 13:00:07 +00:00
giles
fc2b5e502f Step 5p6 lazy loading + Step 6b VM transpilation prep 
Lazy module loading (Step 5 piece 6 completion):
- Add define-library wrappers + import declarations to 13 source .sx files
- compile-modules.js generates module-manifest.json with dependency graph
- compile-modules.js strips define-library/import before bytecode compilation
  (VM doesn't handle these as special forms)
- sx-platform.js replaces hardcoded 24-file loadWebStack() with manifest-driven
  recursive loader — only downloads modules the page needs
- Result: 12 modules loaded (was 24), zero errors, zero warnings
- Fallback to full load if manifest missing

VM transpilation prep (Step 6b):
- Refactor lib/vm.sx: 20 accessor functions replace raw dict access
- Factor out collect-n-from-stack, collect-n-pairs, pad-n-nils helpers
- bootstrap_vm.py: transpiles 9 VM logic functions to OCaml
- sx_vm_ref.ml: proof that vm.sx transpiles (preamble has stubs)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 12:18:41 +00:00