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Remove trait

This commit is contained in:
Jane Lusby 2020-02-22 08:28:56 -08:00
parent b44b4ca602
commit 494dd0b719
1 changed files with 26 additions and 45 deletions
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71
src/librustc_lint/builtin.rs
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@ -738,52 +738,33 @@ impl EarlyLintPass for DeprecatedAttr {
}
}
trait UnusedDocCommentExt {
fn warn_if_doc(
&self,
cx: &EarlyContext<'_>,
node_span: Span,
node_kind: &str,
attrs: &[ast::Attribute],
);
}
fn warn_if_doc(cx: &EarlyContext<'_>, node_span: Span, node_kind: &str, attrs: &[ast::Attribute]) {
let mut attrs = attrs.into_iter().peekable();
impl UnusedDocCommentExt for UnusedDocComment {
fn warn_if_doc(
&self,
cx: &EarlyContext<'_>,
node_span: Span,
node_kind: &str,
attrs: &[ast::Attribute],
) {
let mut attrs = attrs.into_iter().peekable();
// Accumulate a single span for sugared doc comments.
let mut sugared_span: Option<Span> = None;
// Accumulate a single span for sugared doc comments.
let mut sugared_span: Option<Span> = None;
while let Some(attr) = attrs.next() {
if attr.is_doc_comment() {
sugared_span =
Some(sugared_span.map_or_else(|| attr.span, |span| span.with_hi(attr.span.hi())));
}
while let Some(attr) = attrs.next() {
if attr.is_doc_comment() {
sugared_span = Some(
sugared_span.map_or_else(|| attr.span, |span| span.with_hi(attr.span.hi())),
if attrs.peek().map(|next_attr| next_attr.is_doc_comment()).unwrap_or_default() {
continue;
}
let span = sugared_span.take().unwrap_or_else(|| attr.span);
if attr.is_doc_comment() || attr.check_name(sym::doc) {
cx.struct_span_lint(UNUSED_DOC_COMMENTS, span, |lint| {
let mut err = lint.build("unused doc comment");
err.span_label(
node_span,
format!("rustdoc does not generate documentation for {}", node_kind),
);
}
if attrs.peek().map(|next_attr| next_attr.is_doc_comment()).unwrap_or_default() {
continue;
}
let span = sugared_span.take().unwrap_or_else(|| attr.span);
if attr.is_doc_comment() || attr.check_name(sym::doc) {
cx.struct_span_lint(UNUSED_DOC_COMMENTS, span, |lint| {
let mut err = lint.build("unused doc comment");
err.span_label(
node_span,
format!("rustdoc does not generate documentation for {}", node_kind),
);
err.emit();
});
}
err.emit();
});
}
}
}
@ -797,16 +778,16 @@ impl EarlyLintPass for UnusedDocComment {
ast::StmtKind::Semi(..) | ast::StmtKind::Expr(..) | ast::StmtKind::Mac(..) => return,
};
self.warn_if_doc(cx, stmt.span, kind, stmt.kind.attrs());
warn_if_doc(cx, stmt.span, kind, stmt.kind.attrs());
}
fn check_arm(&mut self, cx: &EarlyContext<'_>, arm: &ast::Arm) {
let arm_span = arm.pat.span.with_hi(arm.body.span.hi());
self.warn_if_doc(cx, arm_span, "match arms", &arm.attrs);
warn_if_doc(cx, arm_span, "match arms", &arm.attrs);
}
fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &ast::Expr) {
self.warn_if_doc(cx, expr.span, "expressions", &expr.attrs);
warn_if_doc(cx, expr.span, "expressions", &expr.attrs);
}
}