PLambda 1.1.1

Description:

PLambda 1.1.1

PLambda
An early prototype of a workable version of JLambda for Python.
To be used mainly as a part of the IOP imaude system.
JLambda and PLambda are essentially network command and control
languages. JLambda for controlling Java processes, and PLambda for
python processes. JLambda is over 14 years old, whereas PLambda
is just a pup.
Note that Python is not Java so there will be some differences, but
hopefully the spirit will shine through.
PLambda, like JLambda, is a fast, efficient, minimalistic, call-by-value, lexically scoped Lisp or
Scheme like language with closures built upon the underlying data structures of the language it rests upon.
The interpreter is implemented via CPS (continuation passing style).

Guide for JLambda Afficionados

https://github.com/SRI-CSL/PLambda/blob/master/GUIDE.md



Install
There is a pip package, but that will move along at a lazier pace than developing directly from
the repository.


pip install plambda




Dependencies
This master is currently using Python 3.7 but most recent Python 3 versions should work. Travis tests it on 3.5, 3.6, 3.7 and 3.8.
I make no effort to support Python 2, but there is an old branch called 2.7 which might serve your twisted purpose.
You will need the antlr4 runtime:


pip install antlr4-python3-runtime


Though this is done by doing make develop described next.


Develop
Checkout the repository and do:


make develop


To run the tests you can do:


make check




Manuals
The jlambda manual can be found here: https://github.com/SRI-CSL/iopc/blob/master/doc/jlambda_manual.pdf?raw=true
The iop manual can be found here:
https://github.com/SRI-CSL/iopc/blob/master/doc/iop_manual.pdf?raw=true


Websites
The jlambda webpage lives over here: http://jlambda.com/~iop/jlambda.html
The iop webpage lives over here: http://jlambda.com/~iop/
The main client of the iop system is SRI International’s Pathway Logic: http://pl.csl.sri.com/


Recipe to add an operator

Add it to the grammar plambda.antlr4.PLambda.g4
Process the grammar with make antlr4
Add the operator to the plambda.eval.SymbolTable
Add the operator to the plambda.eval.Interpreter
Add some tests to tests/language.py