Files
rose-ash/shared/sx/query_executor.py
giles f9f810ffd7 Complete Python eval removal: epoch protocol, scope consolidation, JIT fixes
Route all rendering through OCaml bridge — render_to_html no longer uses
Python async_eval. Fix register_components to parse &key params and &rest
children from defcomp forms. Remove all dead sx_ref.py imports.

Epoch protocol (prevents pipe desync):
- Every command prefixed with (epoch N), all responses tagged with epoch
- Both sides discard stale-epoch messages — desync structurally impossible
- OCaml main loop discards stale io-responses between commands

Consolidate scope primitives into sx_scope.ml:
- Single source of truth for scope-push!/pop!/peek, collect!/collected,
  emit!/emitted, context, and 12 other scope operations
- Removes duplicate registrations from sx_server.ml (including bugs where
  scope-emit! and clear-collected! were registered twice with different impls)
- Bind scope prims into env so JIT VM finds them via OP_GLOBAL_GET

JIT VM fixes:
- Trampoline thunks before passing args to CALL_PRIM
- as_list resolves thunks via _sx_trampoline_fn
- len handles all value types (Bool, Number, RawHTML, SxExpr, Spread, etc.)

Other fixes:
- ~cssx/tw signature: (tokens) → (&key tokens) to match callers
- Minimal Python evaluator in html.py for sync sx() Jinja function
- Python scope primitive stubs (thread-local) for non-OCaml paths
- Reader macro resolution via OcamlSync instead of sx_ref.py

Tests: 1114 OCaml, 1078 JS, 35 Python regression, 6/6 Playwright SSR

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-24 16:14:40 +00:00

105 lines
3.3 KiB
Python

"""
Execute defquery / defaction definitions.
Unlike fragment handlers (which produce SX markup via ``async_eval_to_sx``),
query/action defs produce **data** (dicts, lists, scalars) that get
JSON-serialized by the calling blueprint. Uses ``async_eval()`` with
the I/O primitive pipeline so ``(service ...)`` calls are awaited inline.
"""
from __future__ import annotations
from typing import Any
from .types import QueryDef, ActionDef, NIL
async def execute_query(query_def: QueryDef, params: dict[str, str]) -> Any:
"""Execute a defquery and return a JSON-serializable result.
Parameters are bound from request query string args.
"""
from .jinja_bridge import get_component_env, _get_request_context
import os
env = dict(get_component_env())
env.update(query_def.closure)
# Bind params from request args (try kebab-case and snake_case)
for param in query_def.params:
snake = param.replace("-", "_")
val = params.get(param, params.get(snake, NIL))
# Coerce type=int for common patterns
if isinstance(val, str) and val.lstrip("-").isdigit():
val = int(val)
env[param] = val
if os.environ.get("SX_USE_OCAML") == "1":
from .ocaml_bridge import get_bridge
from .parser import serialize, parse_all
from .pages import _wrap_with_env
bridge = await get_bridge()
sx_text = _wrap_with_env(query_def.body, env)
ctx = {"_helper_service": ""}
raw = await bridge.eval(sx_text, ctx=ctx)
if raw:
parsed = parse_all(raw)
result = parsed[0] if parsed else None
else:
result = None
return _normalize(result)
from .async_eval import async_eval
ctx = _get_request_context()
result = await async_eval(query_def.body, env, ctx)
return _normalize(result)
async def execute_action(action_def: ActionDef, payload: dict[str, Any]) -> Any:
"""Execute a defaction and return a JSON-serializable result.
Parameters are bound from the JSON request body.
"""
from .jinja_bridge import get_component_env, _get_request_context
import os
env = dict(get_component_env())
env.update(action_def.closure)
# Bind params from JSON payload (try kebab-case and snake_case)
for param in action_def.params:
snake = param.replace("-", "_")
val = payload.get(param, payload.get(snake, NIL))
env[param] = val
if os.environ.get("SX_USE_OCAML") == "1":
from .ocaml_bridge import get_bridge
from .parser import serialize, parse_all
from .pages import _wrap_with_env
bridge = await get_bridge()
sx_text = _wrap_with_env(action_def.body, env)
ctx = {"_helper_service": ""}
raw = await bridge.eval(sx_text, ctx=ctx)
if raw:
parsed = parse_all(raw)
result = parsed[0] if parsed else None
else:
result = None
return _normalize(result)
from .async_eval import async_eval
ctx = _get_request_context()
result = await async_eval(action_def.body, env, ctx)
return _normalize(result)
def _normalize(value: Any) -> Any:
"""Ensure result is JSON-serializable (strip NIL, convert sets, etc)."""
if value is NIL or value is None:
return None
if isinstance(value, set):
return list(value)
return value