fastobo-syntax 0.3.6

# `fastobo-syntax` [![Star me](https://img.shields.io/github/stars/fastobo/fastobo-syntax.svg?style=social&label=Star&maxAge=3600)](https://github.com/fastobo/fastobo-syntax/stargazers)

*PEG Syntax and pest parser for the OBO flat file format 1.4*

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## Overview

This library is a strict implementation of the [OBO flat file format 1.4](http://owlcollab.github.io/oboformat/doc/obo-syntax.html)
syntax using the [`pest`](https://pest.rs/) parser generator. It was outsourced from
[`fastobo`](https://github.com/fastobo/fastobo/) to reduce compilation time, since deriving the `OboParser` from
[`grammar.pest`](https://github.com/fastobo/fastobo-syntax/blob/master/src/grammar.pest) takes some time.

The parser itself is reexported in [`fastobo::parser`](https://docs.rs/fastobo/latest/fastobo/parser/), so there
is probably no need to depend on this crate directly.


## Strictness

The syntax is a strict implementation of the 1.4 format, with the following exceptions:

* `property_value` clauses can have a value with is not quote-enclosed. This is a workaround
  to support some ontology files using `obo2owl` or the `owlapi` to generate their OBO
  counterpart, which does not quote-enclose property values
  ([owlcs/owlapi#833](https://github.com/owlcs/owlapi/pull/833)).
* ISO-8601 datetimes can only be parsed from the canonical format (`ỲYYY-MM-DDTHH:MM:SS`)
  with an optional timezone. Week dates and calendar dates are not supported.


## See also

* [`fastobo`](https://crates.io/crates/fastobo): Abstract Syntax Tree and data
  structures for the OBO format version 1.4.
* [`fastobo-py`](https://pypi.org/project/fastobo/): Idiomatic Python bindings
  to the `fastobo` crate.


## Feedback

Found a bug ? Have an enhancement request ? Head over to the
[GitHub issue tracker](https://github.com/fastobo/fastobo-syntax/issues) of the project if
you need to report or ask something. If you are filling in on a bug, please include as much
information as you can about the issue, and try to recreate the same bug in a simple, easily
reproducible situation.


## About

This project was developed by [Martin Larralde](https://github.com/althonos)
as part of a Master's Degree internship in the [BBOP team](http://berkeleybop.org/) of the
[Lawrence Berkeley National Laboratory](https://www.lbl.gov/), under the supervision of
[Chris Mungall](http://biosciences.lbl.gov/profiles/chris-mungall/). Cite this project as:

*Larralde M.* **Developing Python and Rust libraries to improve the ontology ecosystem**
*\[version 1; not peer reviewed\].* F1000Research 2019, 8(ISCB Comm J):1500 (poster)
([https://doi.org/10.7490/f1000research.1117405.1](https://doi.org/10.7490/f1000research.1117405.1))