CrystalScript
CrystalScript is project built around providing a simple scripting language for the flash platform. It is written in AS3, and is aimed at being easy to incorporate into other projects (games, IDEs, interactive apps, as a plugin system, etc).
Authors
Design and Code by Jon 'Jonanin' Morton.
Tons of help, inspiration, and guidance by Jasper 'magcius' St. Pierre of Mecheye Independent Studios.
Project Overview
There are many different sections to the CrystalScript project, the are detailed below. These are general descriptions of what the completed project should look like, not necessarily how the current implementation functions. More information and details in the docs directory.
Parser
The parser includes the Tokenizer (Lexer), the AST tree generator (or 'parser'), and the AST tree optimizer. It also is responsible for performing syntax checking and reporting. Overall, the parser deals with all aspects relating to the scipt text and grammar.
Virtual Machine
This portion of the project includes a code generator that will emit optimized bytecode for a simple register based CrystalScript VM. While much slower than generating pure AVM2 bytecode, this option is easier to implement, test, and integrate into existing projects
AVM2
The AVM2 section aims to compile CrystalScript code directly into optimized AVM2 bytecode. It will include a dynamic loader (e.g. through loadBytes()) that will be responsible for executing generated AVM2 bytecode.
Editor
Eventually we would like to provide an AS3 editor component that provides a syntax highlighting text editor that will make it easier to write CrystalScript code.
Standard Library
It is a major goal to provide a feature-rich, easy to use standard library that contains all of the functions and other functionality expected in a modern scripting language.
Project Status
Currently, the progress as far as what is described above is minimal. The basic parser works and generates an AST for a subset of what will eventually be the full language, and some avm2 progress has been made (though none on the actual bytecode generator)