jsonparser

A hand written JSON parser in Rust in under 500 lines of code.

This parser reads JSON source from a string and construct a custom JSONValue object in memory.

enumJSONValue{Null,True,False,Number(f64),String(String),Array(Vec<JSONValue>),Object(HashMap<String,JSONValue>),}

All the source code is in the src/main.rs file, including:

• Enum definitions for JSONValue and JSONParseError
• The Parser
• Unit tests
• Quick benchmarks

There is an accompanying blog post for this on my website at https://krishkrish.com/blog/json-parser-in-rust

Usage

To use this parser, you can call the parse function with a JSON source string.

let json = r#"{ "name": "John Doe", "age": 30, "is_student": false, "marks": [90, 80, 85], "address": { "street": "123 Main St", "city": "New York" }}"#;let json_value = jsonparser::parse(json).unwrap();

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

• JSON.org
• serde-rs's json-benchmark