Monorepo: golang-lean (TGC) + octive-lean (TOC) + tsm-lean (TSM) + common-lean (cross-language apex).
4b6fcec565
Symbolic computation via a persistent Python subprocess: new `.sym`
Value variant carries (srepr, pretty), `OctiveLean.SymPyBridge` owns
the subprocess and round-trips expressions, and `evalBinOp`/unary
negation route through SymPy when either operand is `.sym`. Corpus
adds sym_basic, sym_solve_simplify, sym_calc; demos add Lorenz,
Van der Pol, gravity, SymToolboxDemo, Lab7Interp.
DSL surface changes from `octave! ... octave_end` to `octave! { ... }`.
RosettaStone rewritten against the new syntax; PlotDemo updated.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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||
|---|---|---|
| .github/workflows | ||
| corpus | ||
| docs | ||
| OctiveLean | ||
| widget/js | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| CONTRIBUTING.md | ||
| CorpusCheck.lean | ||
| justfile | ||
| Lab7Interp.m | ||
| lake-manifest.json | ||
| lakefile.toml | ||
| lean-toolchain | ||
| Main.lean | ||
| NumericalTutorial.lean | ||
| OctiveLean.lean | ||
| PlotDemo.lean | ||
| README.md | ||
| RosettaStone.lean | ||
| Sim_Gravity.m | ||
| Sim_Lorenz.m | ||
| Sim_VanDerPol.m | ||
| SymToolboxDemo.m | ||
| tutorial.m | ||
octive-lean
A Lean 4 reimplementation of GNU Octave — the MATLAB-compatible numerical language — aiming to be more versatile than upstream.
Build
lake build
Requires the Lean toolchain pinned in lean-toolchain. elan will pick it up automatically.
Run
# REPL
lake exe octive-lean
# Run an .m script
lake exe octive-lean path/to/script.m
# Verify the corpus against expected outputs
lake build corpus-check
lake exe corpus-check
Layout
| Path | What's there |
|---|---|
OctiveLean/ |
Library: Lexer, Parser, AST, Eval, Builtins, REPL, BigStep, PlotSVG, … |
Main.lean |
Entry point — REPL or file runner |
CorpusCheck.lean |
Test driver for corpus/ |
corpus/ |
.m test cases paired with .expected outputs |
NumericalTutorial.lean, RosettaStone.lean |
Lean-side tutorials and Octave⇄Lean translations |
PlotDemo.lean, widget/ |
Plotting via ProofWidgets + SVG |
octave-upstream/ |
Shallow clone of GNU Octave (gitignored, used as reference) |
Status
Working interpreter: matrices, arithmetic, control flow, functions (incl. recursion, closures, anonymous @(x)), cell arrays, structs, printf-family, REPL, file execution. See corpus/ for what's covered.
Tests
lake build && lake exe corpus-check
Pass --update to regenerate .expected files after intentional behavior changes.