diff options
| author | Michael Woerister <michaelwoerister@posteo> | 2018-02-14 16:11:02 +0100 |
|---|---|---|
| committer | Michael Woerister <michaelwoerister@posteo> | 2018-03-05 11:05:01 +0100 |
| commit | 542bc75deaaf4e84dcd7a196685bc1a1cb100d32 (patch) | |
| tree | af895d8de41f2569ac3235ab8b244e2853dfe54c /src/libsyntax/feature_gate.rs | |
| parent | e2746d870017c869b84fc56ecd63f5e4f9646c96 (diff) | |
| download | rust-542bc75deaaf4e84dcd7a196685bc1a1cb100d32.tar.gz rust-542bc75deaaf4e84dcd7a196685bc1a1cb100d32.zip | |
Turn features() into a query.
Diffstat (limited to 'src/libsyntax/feature_gate.rs')
| -rw-r--r-- | src/libsyntax/feature_gate.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs index 058df1d5169..45d82bc7af3 100644 --- a/src/libsyntax/feature_gate.rs +++ b/src/libsyntax/feature_gate.rs @@ -62,6 +62,7 @@ macro_rules! declare_features { &[$((stringify!($feature), $ver, $issue, set!($feature))),+]; /// A set of features to be used by later passes. + #[derive(Clone)] pub struct Features { /// `#![feature]` attrs for stable language features, for error reporting pub declared_stable_lang_features: Vec<(Symbol, Span)>, @@ -78,6 +79,12 @@ macro_rules! declare_features { $($feature: false),+ } } + + pub fn walk_feature_fields<F>(&self, mut f: F) + where F: FnMut(&str, bool) + { + $(f(stringify!($feature), self.$feature);)+ + } } }; |