pest-ast

pest-ast is an add-on to the pest parsing library that provides a structured way to convert dynamically typed Pest Parse Trees into strongly typed Abstract Syntax Trees (ASTs). It includes a derive macro to automate this conversion, helping developers reduce repetitive code and improve type safety in their parsers.

Key Features

• Automatic AST Derivation — Provides a derive macro to automatically generate conversion code from pest parse trees to custom AST types.
• Strong Typing — Converts pest's dynamically typed parse tree nodes into strongly typed Rust structures for better compile-time safety.
• Future Grammar Integration — Plans to optionally validate source grammars statically to prevent runtime errors.
• Trait Framework — Built on the from-pest crate which provides the foundational trait system for parse tree conversions.

Philosophy

pest-ast aims to bridge the gap between pest's flexible parse trees and the rigor of typed ASTs, making parser development more ergonomic and less error-prone through automation and strong typing.