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A Forth implementation running on the Atto VM
C
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README.md

README.md

frink

About

Frink is an implementation of the Forth programming language, with the Atto virtual machine as its compile target. Frink reads .fk, such as those in test/ and compiles them down to Atto bytecode.

I plan to allow the compile/run process to be done directly from Frink, without having to run Atto, or generate bytecode. This will be added eventually, but right now, it can only compile to bytecode.

Usage

Frink depends on Atto to build. After cloning this repository, running make will clone the Atto repository and build it automatically. Running make distclean all will remove the old Atto lib, and download and build fresh version of the repository.

After building frink, compile frink files with ./frink some/file.fk. This will generate out.ato, which can be run by the Atto virtual machine executable.

Language

Frink is an implementation of Forth, and as such is a stack based language. There are a bunch of standard Forth-ish words, like dup swap, pop, ....

Constants

In Frink you can define constants, which are immutable values, probably used frequently in code. They basically act like #define does in C. They are set with constant <name> <value> and can be used throughout the code instead of using the actual value. Value can be either a string or a number. Here's an example of how to use them: constant number 42 number .cr

Vars

Vars are sort-of kind-of like pointers in C (sort of). They cannot be accessed directly, but must be set and read with the special words set and value. A var is declared by var <name> Here's an example: var x 1 x set ( sets the var) x .cr ( doesn't print 1!) ( prints something like `Var@0xbf8cdb20') x value .cr ( prints 1)

License

Copyright (c) 2010, 2011 Erik Price

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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