use self::AttributeGate::*;
use abi::Abi;
-use ast::{self, NodeId, PatKind, RangeEnd};
+use ast::{self, NodeId, PatKind, RangeEnd, RangeSyntax};
use attr;
use codemap::Spanned;
use syntax_pos::Span;
// allow `'_` placeholder lifetimes
(active, underscore_lifetimes, "1.22.0", Some(44524)),
+
+ // allow `..=` in patterns (RFC 1192)
+ (active, dotdoteq_in_patterns, "1.22.0", Some(28237)),
);
declare_features! (
gate_feature_post!(&self, exclusive_range_pattern, pattern.span,
"exclusive range pattern syntax is experimental");
}
+ PatKind::Range(_, _, RangeEnd::Included(RangeSyntax::DotDotEq)) => {
+ gate_feature_post!(&self, dotdoteq_in_patterns, pattern.span,
+ "`..=` syntax in patterns is experimental");
+ }
_ => {}
}
visit::walk_pat(self, pattern)