+++ /dev/null
-# forth.jl
-
-A hobby implementation of a FORTH-like system atop the Julia scientific
-computing language. It will almost certainly never be useful for any purpose
-besides that which it has already fulfilled: forcing me to think quite
-carefully about how forth works.
-
-This package owes a massive debt to the existence of the literate programming
-project [JonesForth] (https://rwmj.wordpress.com/2010/08/07/jonesforth-git-repository/),
-which was an amazing read. To a large degree my package is simply a port of
-that project from x86 assembly + forth to julia + forth, although the mapping
-is in a few places non-trivial due to the fact that julia is a high level
-language. A huge proportion (say 80%) of the library code in src/lib.4th is
-directly copied from JonesForth. (The fact that it was possible to reuse this
-code was satisfying in its own right!) I've added some additional core
-definitions and modified some of the others to be a little bit closer to the
-behaviour of ANS forth (or at least FORTH 83).
-
-There's quite a lot to say about the implementation, especially due to its
-high-level grounding, but that will have to wait for another time.
-
-## Installation
-
-forth.jl is not (and probably will never be) a registered julia package. To
-install it, you will therefore need to use the following command:
-
- julia> Pkg.clone("https://github.com/tgvaughan/forth.jl")
-
-## Usage
-
-To start the interpreter/compiler running, simply enter the following at
-the julia prompt:
-
- julia> import forth
- julia> forth.run()
-
-The first thing the interpreter will do is compile the core definitions in
-the library file. Once this is complete you can start entering forth commands:
-
- : star 42 emit ; ok
- star * ok
-
-There's an example Mandelbrot Set drawing program included in the examples
-directory. To run it, you'll have to locate this directory on your system (its
-location depends on what OS you happen to be using and how julia is installed).
-Once found, use the INCLUDE word to compile its definitions. For example, on
-my system I can run the example in this way:
-
- include /home/tim/.julia/v0.4/forth/examples/mandelbrot.4th
- Enter 'mandel' to draw the Mandelbrot Set. ok
- mandel
- *
-
- **
- ********
- *********
- *****
- *** ********************
- ****************************** ****
- **********************************
- ***************************************
- ********************************************
- ** * *******************************************
- ************* *********************************************
- ****************** ********************************************
- ******************* ********************************************
- ** * * *******************************************************************
- ******************* *******************************************
- ***************** ********************************************
- ************* ********************************************
- ** * ********************************************
- ********************************************
- **************************************
- ***********************************
- ****************************** ****
- ** ********************
- *****
- *******
- *********
- **
- ok
-
-To exit, enter ^D on a blank line or use the `bye` word.
-
-## License
-
-This package is free software and is distributed under version 3.0 of the GNU
-General Public License, which may be found in the file LICENSE in this
-directory.
The Lambda Lab / projects / forth.jl.git / blobdiff