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Flexible Scheme objects with message passing and prototypes
- Author: John Croisant <email@example.com>
- Source Repository: https://github.com/jacius/protolk/
- Issue Tracker: https://github.com/jacius/protolk/issues/
- Wiki: https://github.com/jacius/protolk/wiki/
Protolk is not a new language or dialect. It offers a Scheme record type and collection of procedures that can be seamlessly integrated with other Scheme code. Some optional reader extensions are also available, to add some syntax sugar for convenience.
Protolk is designed with four core principles in mind:
- Simplicity: Protolk's object model is very simple: an object holds its own properties and methods, it inherits properties and methods from an (optional) base object, and it performs actions in response to messages. That's all there is to it. However...
- Extensibility: ... it's easy to build complex and interesting behavior on top of that simple object model. You can extend, customize, or replace pretty much anything about Protolk, including much of the inheritance system!
- Flexibility: Objects can be modified in any way at any time. You don't have to declare ahead of time what properties or methods an object will have, or redefine an entire class just to add a property or method to a single object.
- Encapsulation: Objects maintain a separation between their private state and their public interfaces. Properties are only (directly) read and written by the object itself. Methods are public by nature, but there are ways to implement private methods.
Protolk itself has no runtime requirements beyond the standard library provided by Chicken 4.7.0.
Protolk's documentation is currently hosted on its project wiki:
Protolk is made available under the following terms (the BSD 2-Clause License):
Protolk: flexible Scheme objects with message passing and prototypes Copyright © 2012 John Croisant. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.