This is a parser for Applesoft BASIC intended for use with language servers. It is built using the Tree-sitter system. Bindings are available for several languages. The following pre-built packages are available:

• Parsing Applesoft with C++
• Parsing Applesoft with Rust
• Parsing Applesoft with WASM
• Parsing Applesoft with Node

For details on parser usage and design see the wiki.

The build products are generated using `script/build.py, see docstring within for dependencies.

This is a cascaded build. The starting files are token_list.txt, grammar-src.js, and scanner-src.c. These are used by token_processor.py to produce grammar.js and src/scanner.c (a simplified TextMate grammar is also generated here). These are used by tree-sitter generate to produce src/parser.c and, in turn, the bindings for various languages. These are used by tree-sitter build to produce the WASM parser.

The build.py script produces a case insensitive parser that accepts extended CALL syntax, but can be easily modified to produce a more strict parser.

1. Applesoft BASIC Programmer's Reference Manual - Volume 1
2. Applesoft BASIC Programmer's Reference Manual - Volume 2