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Fix useless attribute suggestion

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flip1995 2020-01-08 17:31:06 +01:00
parent c789caa454
commit 9ea17d42a7
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GPG key ID: 693086869D506637
1 changed files with 11 additions and 2 deletions
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13
clippy_lints/src/utils/mod.rs
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@ -42,8 +42,8 @@ use rustc_hir::def_id::{DefId, CRATE_DEF_INDEX, LOCAL_CRATE};
use rustc_hir::Node;
use rustc_hir::*;
use rustc_span::hygiene::ExpnKind;
use rustc_span::source_map::{Span, DUMMY_SP};
use rustc_span::symbol::{kw, Symbol};
use rustc_span::{BytePos, Pos, Span, DUMMY_SP};
use smallvec::SmallVec;
use syntax::ast::{self, Attribute, LitKind};
use syntax::attr;
@ -554,7 +554,16 @@ pub fn last_line_of_span<T: LintContext>(cx: &T, span: Span) -> Span {
let source_map_and_line = cx.sess().source_map().lookup_line(span.lo()).unwrap();
let line_no = source_map_and_line.line;
let line_start = &source_map_and_line.sf.lines[line_no];
Span::new(*line_start, span.hi(), span.ctxt())
let span = Span::new(*line_start, span.hi(), span.ctxt());
if_chain! {
if let Some(snip) = snippet_opt(cx, span);
if let Some(first_ch_pos) = snip.find(|c: char| !c.is_whitespace());
then {
span.with_lo(span.lo() + BytePos::from_usize(first_ch_pos))
} else {
span
}
}
}
/// Like `snippet_block`, but add braces if the expr is not an `ExprKind::Block`.