A Whitespace interpreter.
Project description
An interpreter written in Python for the imperative, stack based language called Whitespace.
Installation
Install it using:
$ pip install whitespace
You would now have access to an executable called whitespace. Type
$ whitespace -h
to learn more.
Usage
Let’s say you’ve written a Whitespace program and stored it in the file program.ws. Then, to execute that program, type:
$ whitespace program.ws
You can find example Whitespace programs at tests/fixtures. Be sure to run them to see what they do.
For example, here’s the factorial program and a sample execution:
$ whitespace fact.ws
Enter a number: 40
40! = 20397882081197443358640281739902897356800000000
Development
Get the source code.
$ git clone git@github.com:dwayne/whitespace-python.git
Create a virtual environment and activate it.
$ cd whitespace-python
$ pyvenv venv
$ . venv/bin/activate
Then, upgrade pip and setuptools and install the development dependencies.
(venv) $ pip install -U pip setuptools
(venv) $ pip install -r requirements-dev.txt
You’re now all set to begin development.
Testing
Tests are written using the unittest unit testing framework.
Run all tests.
(venv) $ python -m unittest
Run a specific test module.
(venv) $ python -m unittest tests.test_parser
Run a specific test case.
(venv) $ python -m unittest tests.test_parser.ParserTestCase
Run a specific test method.
(venv) $ python -m unittest tests.test_parser.ParserTestCase.test_it_parses_push
References
Credits
Thanks to Edwin Brady and Chris Morris for designing/developing this programming language (also developers of the Idris programming language). I’ve had lots of fun playing with it and writing interpreters (in Racket, Haskell, Ruby and now Python) for it.
Copyright
Copyright (c) 2016 Dwayne Crooks. See LICENSE for further details.
Change Log
1.0.0b2 (2016-09-03)
Added
A change log (guided by http://keepachangelog.com/)
Notes on installation, usage, development and testing to the README
A version badge from http://shields.io/
Begin tracking development dependencies
Changed
Explicitly list the packages to be included in the distribution
Stop including tests in the distribution
Stop using codecs.open since open does the job in Python 3
Consistently name test cases with a TestCase suffix
1.0.0b1 (2016-09-02)
Added
A fully tested parser with error handling and source location tracking
An interpreter
A CLI for running the interpreter
Fixed
Fix the console’s output buffering by flushing after every write
0.1.0.dev2 (2016-09-01)
Changed
Update MANIFEST.in and setup.py to ensure the correct files are included in the distribution
0.1.0.dev1 (2016-08-31)
Added
A virtual machine
A console abstraction to make it easier to test I/O
The stack manipulation, arithmetic, heap access, flow control and I/O instructions
0.0.1.dev1 (2016-08-31)
Birth!
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