https://github.com/txus/calc

Simple arithmetic language interpreter with JIT compilation, using LLVM.
https://github.com/txus/calc

Last synced: 3 months ago
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Simple arithmetic language interpreter with JIT compilation, using LLVM.

• Host: GitHub
• URL: https://github.com/txus/calc
• Owner: txus
• Created: 2013-06-23T18:55:23.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2013-07-23T15:56:49.000Z (over 11 years ago)
• Last Synced: 2024-08-03T18:14:08.833Z (6 months ago)
• Language: C
• Homepage: https://github.com/txus/calc
• Size: 141 KB
• Stars: 25
• Watchers: 4
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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• AwesomeInterpreter - calc

README

        
# calc

Calc is a proof of concept to implement a simple arithmetic language

interpreter with JIT compilation, using either LLVM or a more low-level JIT

based on GNU Lightning.

A fun weekend project, if you ask me!

# Install

You need LLVM and GNU Lightning installed. On Mac OSX:

    $ brew install llvm

Unfortunately the version of Lightning in Homebrew is broken. Download and

install lightning from its [mirror git repository][lightning].

Now:

    $ git clone git://github.com/txus/calc.git calc

    $ cd calc

    $ make

You get the `calc` executable.

## Usage

Using the AST-walking interpreter:

    $ ./calc "3 * (4 + 5)"

Using the LLVM JIT compiler:

    $ ./calc --llvm "3 * (4 + 5)"

Using the lower-level, GNU-lightning based JIT compiler:

    $ ./calc --jit "3 * (4 + 5)"

## Syntax

It's just integers, these operators: `+ - * /`, and parentheses for precedence.

## Who's this

This was made by [Josep M. Bach (Txus)](http://txustice.me) under the MIT

license. I'm [@txustice][twitter] on twitter (where you should probably follow

me!).

[twitter]: https://twitter.com/txustice

[lightning]: https://github.com/bonzini/lightning