https://github.com/digama0/olean-rs

parser/viewer for olean files (lean 3)
https://github.com/digama0/olean-rs

Last synced: 3 months ago
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parser/viewer for olean files (lean 3)

• Host: GitHub
• URL: https://github.com/digama0/olean-rs
• Owner: digama0
• Created: 2018-12-19T00:09:58.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-05-08T20:15:33.000Z (over 5 years ago)
• Last Synced: 2024-05-22T20:34:20.217Z (6 months ago)
• Language: Rust
• Homepage:
• Size: 80.1 KB
• Stars: 10
• Watchers: 4
• Forks: 5
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

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• awesome-rust-formalized-reasoning - olean-rs - parser/viewer for olean files. (Projects / Libraries)

README

        
[![Build Status](https://travis-ci.org/cipher1024/olean-rs.svg?branch=master)](https://travis-ci.org/cipher1024/olean-rs)

# olean-rs

Parser/viewer for olean files, written in Rust and Lean.

See `olean.lean` for the lean version, and build with `cargo` for the Rust version. Currently the Rust version is faster by a factor of a hundred or so, so I don't know if I will continue to keep the Lean version up to speed.

Why look at olean files? The `olean` file format is an unstable binary format used by lean for caching successfully parsed files. As such, it is much easier to parse from a third party position than a `lean` file. Second, although lean supports an export format, the format is quite lossy, essentially only representing the expressions that are defined in the file. By contrast, the `olean` file contains lots of other information like notation declarations, attributes, `protected` status and namespace locations (which are not accessible through lean metaprogramming), and VM code. So `olean` parsing is the first step to a number of other processing or analysis passes.

## Building the Rust project

```shell

rustup toolchain install nightly

rustup override set nightly

cargo build

```

## Getting Started

```

Usage: target/debug/olean-rs path/to/file.olean [options]

Options:

    -D, --dump FILE      dump olean parse

    -L                   give location of lean library

    -d, --deps lean.name view all dependents of the target file

    -p DIR               set current working directory

    -l lean.name         test lexer

    -t lean.name         testing

    -h, --help           print this help menu

```