Rollup merge of #44689 - behnam:unicode, r=sfackler

[libstd_unicode] Expose UnicodeVersion type

In <https://github.com/rust-lang/rust/pull/42998>, we added an
uninstantiable type for the internal `UNICODE_VERSION` value,
`UnicodeVersion`, but it was not made public to the outside of the
crate, resulting in the value becoming less useful. Here we make the
type accessible from the outside.

Also add a run-pass test to make sure the type and value can be accessed
as intended.
This commit is contained in:
Guillaume Gomez 2017-09-19 21:50:23 +02:00 committed by GitHub
commit 23b4020156
2 changed files with 23 additions and 1 deletions

View File

@ -47,7 +47,7 @@ pub use core::char::CharTryFromError;
#[unstable(feature = "decode_utf8", issue = "33906")]
pub use core::char::{DecodeUtf8, decode_utf8};
#[unstable(feature = "unicode", issue = "27783")]
pub use tables::UNICODE_VERSION;
pub use tables::{UnicodeVersion, UNICODE_VERSION};
/// Returns an iterator that yields the lowercase equivalent of a `char`.
///

View File

@ -0,0 +1,22 @@
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(unicode)]
/// Tests access to the internal Unicode Version type and value.
pub fn main() {
check(std::char::UNICODE_VERSION);
}
pub fn check(unicode_version: std::char::UnicodeVersion) {
assert!(unicode_version.major >= 10);
}