Maximus Gorog 6592cd058d Add 'octive-lean/' from commit '4b6fcec565a170d7029d4ccba21be2ecd0512d13'

git-subtree-dir: octive-lean
git-subtree-mainline: fd3d42ae33
git-subtree-split: 4b6fcec565

2026-05-12 02:59:14 -06:00

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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.

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