bjoernager/rust
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Cleanup Resolver::disallowed_shadowing.

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This commit is contained in:
Jeffrey Seyfried 2016-10-31 06:48:59 +00:00
parent f5a702dc78
commit 6c4b551403
2 changed files with 11 additions and 11 deletions
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14
src/librustc_resolve/lib.rs
View file

@ -77,7 +77,7 @@ use std::mem::replace;
use std::rc::Rc;
use resolve_imports::{ImportDirective, NameResolution};
use macros::{InvocationData, LegacyBinding, LegacyScope};
use macros::{InvocationData, LegacyBinding};
// NB: This module needs to be declared first so diagnostics are
// registered before they are used.
@ -1067,7 +1067,7 @@ pub struct Resolver<'a> {
privacy_errors: Vec<PrivacyError<'a>>,
ambiguity_errors: Vec<AmbiguityError<'a>>,
disallowed_shadowing: Vec<(Name, Span, LegacyScope<'a>)>,
disallowed_shadowing: Vec<&'a LegacyBinding<'a>>,
arenas: &'a ResolverArenas<'a>,
dummy_binding: &'a NameBinding<'a>,
@ -3364,11 +3364,11 @@ impl<'a> Resolver<'a> {
fn report_shadowing_errors(&mut self) {
let mut reported_errors = FnvHashSet();
for (name, span, scope) in replace(&mut self.disallowed_shadowing, Vec::new()) {
if self.resolve_macro_name(scope, name, false).is_some() &&
reported_errors.insert((name, span)) {
let msg = format!("`{}` is already in scope", name);
self.session.struct_span_err(span, &msg)
for binding in replace(&mut self.disallowed_shadowing, Vec::new()) {
if self.resolve_macro_name(binding.parent, binding.name, false).is_some() &&
reported_errors.insert((binding.name, binding.span)) {
let msg = format!("`{}` is already in scope", binding.name);
self.session.struct_span_err(binding.span, &msg)
.note("macro-expanded `macro_rules!`s may not shadow \
existing macros (see RFC 1560)")
.emit();

8
src/librustc_resolve/macros.rs
View file

@ -74,10 +74,10 @@ impl<'a> LegacyScope<'a> {
}
pub struct LegacyBinding<'a> {
parent: LegacyScope<'a>,
name: ast::Name,
pub parent: LegacyScope<'a>,
pub name: ast::Name,
ext: Rc<SyntaxExtension>,
span: Span,
pub span: Span,
}
pub type LegacyImports = FnvHashMap<ast::Name, (Rc<SyntaxExtension>, Span)>;
@ -213,7 +213,7 @@ impl<'a> Resolver<'a> {
LegacyScope::Binding(binding) => {
if binding.name == name {
if record_used && relative_depth > 0 {
self.disallowed_shadowing.push((name, binding.span, binding.parent));
self.disallowed_shadowing.push(binding);
}
return Some(binding.ext.clone());
}