1 use crate::symbol::{Symbol, sym};
5 /// The edition of the compiler (RFC 2052)
6 #[derive(Clone, Copy, Hash, PartialEq, PartialOrd, Debug, RustcEncodable, RustcDecodable, Eq)]
8 // editions must be kept in order, oldest to newest
15 // when adding new editions, be sure to update:
17 // - Update the `ALL_EDITIONS` const
18 // - Update the EDITION_NAME_LIST const
19 // - add a `rust_####()` function to the session
20 // - update the enum in Cargo's sources as well
23 // must be in order from oldest to newest
24 pub const ALL_EDITIONS: &[Edition] = &[Edition::Edition2015, Edition::Edition2018];
26 pub const EDITION_NAME_LIST: &str = "2015|2018";
28 pub const DEFAULT_EDITION: Edition = Edition::Edition2015;
30 impl fmt::Display for Edition {
31 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
33 Edition::Edition2015 => "2015",
34 Edition::Edition2018 => "2018",
41 pub fn lint_name(&self) -> &'static str {
43 Edition::Edition2015 => "rust_2015_compatibility",
44 Edition::Edition2018 => "rust_2018_compatibility",
48 pub fn feature_name(&self) -> Symbol {
50 Edition::Edition2015 => sym::rust_2015_preview,
51 Edition::Edition2018 => sym::rust_2018_preview,
55 pub fn is_stable(&self) -> bool {
57 Edition::Edition2015 => true,
58 Edition::Edition2018 => true,
63 impl FromStr for Edition {
65 fn from_str(s: &str) -> Result<Self, ()> {
67 "2015" => Ok(Edition::Edition2015),
68 "2018" => Ok(Edition::Edition2018),