mongodb-language-model

Parses a MongoDB query and creates an abstract syntax tree (AST) with part of speech tagging. Currently, only strict extended json syntax is supported and not all the cases are being created correctly and some may not be missing altogether.

This library is based on previous Node.js work by Thomas Rueckstiess on the mongodb-language-model repository. It has been ported from Node.js and PEGjs to Rust and pest.rs.

Usage

The module exposes a function parse(query: &str) -> Result<Expression, Error<Rule>> that takes a mongo JSON query string and returns the parsed AST structure.

lib.rs:

mongodb-language-model is a library for parsing the MongoDB language and returning an abstract syntax tree using pest.rs.

Example

use mongodb_language_model::*;

let input = r#"{ "$or": [ { "status": "A" }, { "qty": { "$lt": 30 } }] }"#;
let ast = parse(input).unwrap();