oxsdatatypes

oxsdatatypes is an implementation of some XML Schema Definition Language Datatypes. Its main aim is to ease the implementation of SPARQL and XPath.

Usage example:

use std::str::FromStr;
use oxsdatatypes::Decimal;

assert!(Decimal::from_str("22.2").unwrap() > Decimal::from_str("21").unwrap());

Each datatype is represented by a Rust struct.

Each datatype provides:

• FromStr implementation to parse a datatype string serialization following its lexical mapping.

• Display implementation to serialize a datatype following its canonical mapping.

• is_identical_with method following its identity relation.

• PartialEq, and Eq if possible, implementations following its equality relation.

• PartialOrd, and Ord if possible, implementations following its order relation.

• From and TryFrom implementations to implement XPath casting.

• Various methods implementing XPath functions.

• from_be_bytes and to_be_bytes methods for serialization.

DateTime::now behavior

The DateTime::now() function needs special OS support. Currently:

• If the custom-now feature is enabled, a function computing now must be set:

  use oxsdatatypes::Duration;
  
  #[no_mangle]
  fn custom_ox_now() -> Duration {
    unimplemented!("now implementation")
  }
  

• For wasm32-unknown-unknown if the js feature is enabled the Date.now() ECMAScript API is used.
• For zkvm there is no access to IO functions so the function returns start of unix time (Jan 1, 1970)
• For all other targets SystemTime::now() is used.

License

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.

Contribution

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