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§JSON streaming parser

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JSON event parser is a simple streaming JSON parser and serializer implementation in Rust.

It does not aims to be the fastest JSON parser possible but to be a simple implementation.

If you want fast and battle-tested code you might prefer to use json, serde_json or simd-json.

Reader example:

use json_event_parser::{FromReadJsonReader, JsonEvent};

let json = b"{\"foo\": 1}";
let mut reader = FromReadJsonReader::new(json.as_slice());
assert_eq!(reader.read_next_event()?, JsonEvent::StartObject);
assert_eq!(reader.read_next_event()?, JsonEvent::ObjectKey("foo".into()));
assert_eq!(reader.read_next_event()?, JsonEvent::Number("1".into()));
assert_eq!(reader.read_next_event()?, JsonEvent::EndObject);
assert_eq!(reader.read_next_event()?, JsonEvent::Eof);

Writer example:

use json_event_parser::{ToWriteJsonWriter, JsonEvent};

let mut writer = ToWriteJsonWriter::new(Vec::new());

assert_eq!(writer.finish()?.as_slice(), b"{\"foo\":1}");


This project is licensed under either of

  • Apache License, Version 2.0, (LICENSE-APACHE or <http://www.apache.org/licenses/LICENSE-2.0>)
  • MIT license (LICENSE-MIT or <http://opensource.org/licenses/MIT>)

at your option.


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in json-event-parser by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.