Prybar is a universal interpreter front-end. Same interface, same REPL, different languages.
At Repl.it, we're in the business of running REPLs. As it happens to be, every language implements them differently. We wanted them to all behave the same: run code and drop into a REPL!
How it works
Prybar, written in Go, maintains a common command-line interface that calls into a select language backend. When possible, the language backends are implemented using cgo and the language's C-bindings. Otherwise, they make use of a small script written in the host language which starts a Prybar-compatible REPL.
Usage: ./prybar-LANG [FLAGS] [FILENAME]... -I interactive (use readline repl) -c string execute without printing result -e string evaluate and print result -i interactive (use language repl) -ps1 string repl prompt (default "--> ") -ps2 string repl continuation prompt (default "... ") -q don't print language version
|language||eval||eval expression||eval file||repl||repl like eval||set prompt|
Build and run
% make help usage: make all Build all Prybar binaries make prybar-LANG Build the Prybar binary for LANG make docker Run a shell with Prybar inside Docker make image Build a Docker image with Prybar for distribution make test Run integration tests make test-image Test Docker image for distribution make clean Remove build artifacts make help Show this message
Prybar uses Docker to make it easy to get started with development. First, you must install Docker. Then, run:
$ make docker
to create a Docker image containing the Prybar code and all of its
dependencies, and launch a shell inside of it. The Prybar source
repository will be synchronized with the working directory of the
container's filesystem, so you only need to re-run
make docker if
you change the Dockerfile or any of its scripts.
To build Prybar (this should be done inside
make docker unless you
have installed all of Prybar's dependencies on your system), run
make all. Then the
prybar-LANG binaries will be
available in the working directory and on
$PATH, one for each
LANG (see the
languages subdirectory of this
$ prybar-python3 -h
make image to create a Docker image containing not only Prybar's
dependencies and source code but also its compiled binaries, which can
be embedded inside other Docker images by means of
This image is automatically built and deployed to Docker
Hub every time a commit is merged to
Copyright (C) 2004-2018 Neoreason, Inc. et al.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
See the COPYING file for more information regarding the GNU General Public License.