Highly customizable language front-end, aimed to be a base for custom DSL evaluators.
Developer note: I've created this library to use in many of my projects and decided to publish the source code, because it may help somebody to write a DSL compiler or evaluator can get benefit from Python ecosystem, within a reasonable time.
I couldn't write documentation because of my tight schedule in these days. But I see the code as self-explanatory, feel free to read it if you're interested.
In the meantime, please note that this project is still in development.
- Built on top of Lark Parser Toolkit
-
- LALR(1), Earley and CYK parsing algorithms are supported by Lark; XFormula uses LALR(1) by default
- Automatic EBNF grammar generator via declarative Python functions (The final grammar generated using the default features can be found in out/Grammar.lark file)
- Modular featurization system to manipulate grammar and parser context dynamically.
- A ready-to-use compact dialect that supports some general purpose data types
and basic symbols
(See
xformula.syntax.astpackage)
See xformula.syntax.core.features package and
xformula.syntax.core.operations.default_operator_precedences module for more
information about the default behaviours.