Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
3c6ea49d0e
This PR adds a comprehensive public API for constructing maximally shared expression applications and performing beta reduction in the `Sym` framework. These functions were previously defined locally in the VC generator and cbv tactic, and are needed by downstream `SymM`-based tools. New functions in `Lean.Meta.Sym.Internal` (generic over `MonadShareCommon`): - `mkAppS₆` through `mkAppS₁₁` (higher-arity application builders) - `mkAppRangeS`, `mkAppNS` (forward application over arrays/ranges) - `mkAppRevRangeS`, `mkAppRevS` (reversed application over arrays/ranges) New public functions in `Lean.Meta.Sym` (`SymM`): - `betaRevS` and `betaS` (beta reduction with max sharing) - `mkForallFVarsS` (forall abstraction with max sharing) The `AlphaShareBuilderM`-specific `mkAppRevRangeS` in `InstantiateS.lean` is replaced by the generic version from `Internal`, and the internal `betaRevS` is renamed to `betaRevS'`. The `Cbv.mkAppNS` now delegates to `Internal.mkAppNS`. --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com> |
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