feat: Haec — trope-particularity language front-end (grammar, elaboration, examples)#1
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design/grammar.ebnf (term formers, fix, 5 atomic effects + sugar); design/ elaboration.adoc (each construct → Trope IR edge + grade + its O2 lowering obligation); vendored design/trope-ir.schema.json (the IR contract Haec targets).
…ecker examples/*.haec with their *.ir.json; faithful record → p-sufficient, survey collapse → p-insufficient (witness=collapse), labelled fuse → p-sufficient. Each round-trips through trope-checker; tests/check-examples.py validates standalone.
Haec as one IR-producing front-end (not the checker, not the vocabulary); honest design-pass snapshot; compiler/ and lsp/ scaffolded as named future work.
De-template; identity; root-allow (design/, compiler/, lsp/, LICENSES/); LICENSES (MPL-2.0 + CC-BY-SA-4.0); Justfile import of build/just/trope.just (check).
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hyperpolymath
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June 22, 2026 08:54
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Haec — a trope-particularity language front-end (design pass)
Builds Haec into this repo per the build brief: the first front-end that lowers
programs to the Trope IR consumed by
trope-checker. Design pass — no compiler yet(HC-5: pin meaning before implementation).
What's here
design/grammar.ebnf— small surface: term formers,fix, the five atomiceffects (
attenuate/predicate/drop/sever/fuse) + sugar(
preserve/project/collapse/detach). The deceptive trio is unwritable (HC-3).design/elaboration.adoc— each construct → a Trope IR edge + grade, and itslowering-correctness obligation (calculus O2) as Haec's burden (stated, not
asserted-discharged).
examples/—*.haecprograms paired with the*.ir.jsonthey lower to:faithful record →
p-sufficient; survey collapse →p-insufficient(witness = thecollapse edge); labelled aggregate fuse →
p-sufficient. Each round-trips throughthe real trope-checker (schema-valid + expected verdict).
just checkvalidatesstandalone against the vendored IR schema.
compiler/andlsp/scaffolded withSTATUS.adocas named future work; docs(README/EXPLAINME/AUDIT/AFFIRMATION/ADR-0002) + a
trope-checkCI job.Verified
just check→ 3/3 examples lower to valid Trope IR. Round-trip verdicts confirmedagainst
trope-checker(just haec-roundtrip).Boundaries
Haec is one IR producer among many; it defines neither the checker (HC-1) nor the
vocabulary. Lowering correctness is Haec's obligation, per construct (deferred,
named). Code = MPL-2.0, prose docs = CC-BY-SA-4.0. Inherited estate CI may be red on
infra unrelated to this change; the
trope-checkjob is the relevant signal.Draft for review — not for merge yet. Depends conceptually on
hyperpolymath/trope-checker#1(the IR + checker).