("recursion_limit", CrateLevel),
];
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Debug)]
pub enum AttributeType {
/// Normal, builtin attribute that is consumed
/// by the compiler before the unused_attribute check
impl<'a> Context<'a> {
fn gate_feature(&self, feature: &str, span: Span, explain: &str) {
- if !self.has_feature(feature) {
+ let has_feature = self.has_feature(feature);
+ debug!("gate_feature(feature = {:?}, span = {:?}); has? {}", feature, span, has_feature);
+ if !has_feature {
emit_feature_err(self.span_handler, feature, span, explain);
}
}
}
fn visit_attribute(&mut self, attr: &ast::Attribute) {
+ debug!("visit_attribute(attr = {:?})", attr);
let name = &*attr.name();
for &(n, ty) in KNOWN_ATTRIBUTES {
if n == name {
if let Gated(gate, desc) = ty {
self.gate_feature(gate, attr.span, desc);
}
+ debug!("visit_attribute: {:?} is known, {:?}", name, ty);
return;
}
}