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plans: tick keep-interpreter box, update progress log
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giles
2026-04-25 18:32:52 +00:00
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plans/prolog-on-sx.md
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@@ -82,12 +82,13 @@ Representation choices (finalise in phase 1, document here):
### Phase 7 — compiler (later, optional)
- [x] Compile clauses to SX continuations for speed
- [ ] Keep interpreter as the reference
- [x] Keep interpreter as the reference
## Progress log
_Newest first. Agent appends on every commit._
- 2026-04-25 — `pl-compiled-matches-interp?` cross-validator in `compiler.sx`: loads source into both a plain and a compiled DB, runs the same goal, returns true iff solution counts match. `tests/cross_validate.sx` applies this to 17 goals across append/member/ancestor/cut/arithmetic/if-then-else, locking the interpreter as the reference against which any future compiler change must agree. Total **551** (+17).
- 2026-04-25 — Clause compiler (`lib/prolog/compiler.sx`): `pl-compile-clause` converts parse-AST clauses to SX closures `(fn (goal trail db cut-box k) bool)`. Pre-collects var names at compile time; `pl-cmp-build-term` reconstructs fresh runtime terms per call. `pl-compile-db!` compiles all clauses in a DB and stores them in `:compiled` table. `pl-solve-user!` in runtime.sx auto-dispatches to compiled lambdas when present, falls back to interpreted. `pl-try-compiled-clauses!` mirrors `pl-try-clauses!` cut semantics. 17 tests in `tests/compiler.sx`. Total **534** (+17).
- 2026-04-25 — `predsort/3` (insertion-sort with 3-arg comparator predicate, deduplicates `=` pairs), `term_variables/2` (collect unbound vars left-to-right, dedup by id), arithmetic extensions (`floor/1`, `ceiling/1`, `truncate/1`, `round/1`, `sign/1`, `sqrt/1`, `pow/2`, `**/2`, `^/2`, `integer/1`, `float/1`, `float_integer_part/1`, `float_fractional_part/1`). 21 tests in `tests/advanced.sx`. Total **517** (+21).
- 2026-04-25 — `sub_atom/5` (non-deterministic substring enumeration; CPS loop over all (start,sublen) pairs; trail-undo only on backtrack) + `aggregate_all/3` (6 templates: count/bag/sum/max/min/set; uses `pl-collect-solutions`). 25 tests in `tests/string_agg.sx`. Total **496** (+25).