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GUEST: step 5 — lib/guest/ast.sx canonical AST shapes (kit + tests)

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Defines the 10 canonical node kinds called out in the brief — literal,
var, app, lambda, let, letrec, if, match-clause, module, import — plus
predicates, ast-kind dispatch, and per-field accessors. Each node is a
tagged keyword-headed list: (:literal V), (:var N), (:app FN ARGS), …

Also lib/guest/tests/ast.sx — 33 tests exercising every constructor +
predicate + accessor, runnable via (gast-tests-run!) which returns the
{:passed :failed :total} dict the shared conformance driver expects.

PARTIAL — pending real consumers. The brief calls Step 5 "Optional —
guests may keep their own AST" and forcing lua/prolog to switch their
internal AST shape risks regressing 775 passing tests for tooling that
nothing yet calls. Both internal ASTs are untouched; lua still 185/185,
prolog still 590/590. Datalog-on-sx (in flight, see plans/datalog-on-sx.md)
will be the natural first real consumer; lua/prolog converters can land
when a cross-language tool wants them.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
giles
2026-05-07 17:35:49 +00:00
parent 69a0886214
commit a774cd26c1
4 changed files with 157 additions and 2 deletions
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2
lib/prolog/scoreboard.json
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@@ -3,5 +3,5 @@
"total_failed": 0,
"total": 590,
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"generated": "2026-05-07T17:07:57+00:00"
"generated": "2026-05-07T17:35:23+00:00"
}