Heraclitus

Heraclitus is an open source compiler frontend written in rust. It's going to be used as a basis for programming languages such as Amber and Flame.

Heraclitus - the compiler frontend

With heraclitus you can create your language by skipping the cumbersome lexing step and using convenience parsing methods that can get you started on your language much quicker.

The main construct that you need is the Compiler. The compiler will tokenize your code and assemble it in a way that you can use to create AST by implementing predefined trait that helps you parse your code.

It's pretty simple. In order to get started you need 3 steps:

1. Create lexing rules
2. Create your ast nodes and let them implement trait provided by this package
3. Create compiler and tie all the components together

Voilá! 🎉

Now you got yourself a ready to analyze / interpret / validate / compile AST.

Ready to get started?

Example

use heraclitus::prelude::*;
Compiler::new("HerbScript", rules);

It is recommended to use included prelude to import just the things we will actually need.

The Compiler requires lexer rules in order to exist.

let cc = Compiler::new("HerbScript", rules);
let tokens = cc.tokenize()?;

Change log 🚀

Version 1.2.8

Fix:

• Added support for UTF symbols

Version 1.2.6

Fix:

• Critical bug with non-tokenizable regions being tokenized

Version 1.2.5

Feature:

• Changed Logger API that improves adding code snippets
• Logger::new_err is now called Logger::new_err_at_position
• Logger::new_warn is now called Logger::new_warn_at_position
• Logger::new_info is now called Logger::new_info_at_position

Version 1.2.4

Fix:

• Bad token highlighting in Logger when showing a code snippet

Version 1.2.2

Fix:

• Major bug with a tokenised interpolation being parsed in a wrong way.
• Intensively used code is now inlined at compile time

Version 0.2.1

Feature:

• ErrorDetails::from_token_option(...) can now be used to create errors at location of given token

Version 0.2.0

Feature:

• Added compounds
• Logger can now display messages not related to code
• New method for retrieving current token
• New debug functionality

Fix:

• Changed string reference of all function parameters to impl AsRef<str>