From ef5f60285faa6444e293214bd0137511f4e40d0d Mon Sep 17 00:00:00 2001
From: Samuel Moelius <samuel.moelius@trailofbits.com>
Date: Fri, 18 Nov 2022 18:18:58 +0000
Subject: [PATCH] Move `line_span` to source.rs

---
 clippy_utils/src/lib.rs    | 20 +-------------------
 clippy_utils/src/source.rs | 22 +++++++++++++++++++---
 2 files changed, 20 insertions(+), 22 deletions(-)

diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs
index 670b740d841..b0063758dce 100644
--- a/clippy_utils/src/lib.rs
+++ b/clippy_utils/src/lib.rs
@@ -108,11 +108,10 @@ use rustc_middle::ty::{FloatTy, IntTy, UintTy};
 use rustc_semver::RustcVersion;
 use rustc_session::Session;
 use rustc_span::hygiene::{ExpnKind, MacroKind};
-use rustc_span::source_map::original_sp;
 use rustc_span::source_map::SourceMap;
 use rustc_span::sym;
 use rustc_span::symbol::{kw, Ident, Symbol};
-use rustc_span::{Span, DUMMY_SP};
+use rustc_span::Span;
 use rustc_target::abi::Integer;
 
 use crate::consts::{constant, Constant};
@@ -1302,23 +1301,6 @@ pub fn contains_return(expr: &hir::Expr<'_>) -> bool {
     .is_some()
 }
 
-/// Extends the span to the beginning of the spans line, incl. whitespaces.
-///
-/// ```rust
-///        let x = ();
-/// //             ^^
-/// // will be converted to
-///        let x = ();
-/// // ^^^^^^^^^^^^^^
-/// ```
-fn line_span<T: LintContext>(cx: &T, span: Span) -> Span {
-    let span = original_sp(span, DUMMY_SP);
-    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(|lines| lines[line_no]);
-    span.with_lo(line_start)
-}
-
 /// Gets the parent node, if any.
 pub fn get_parent_node(tcx: TyCtxt<'_>, id: HirId) -> Option<Node<'_>> {
     tcx.hir().parent_iter(id).next().map(|(_, node)| node)
diff --git a/clippy_utils/src/source.rs b/clippy_utils/src/source.rs
index d28bd92d708..eacfa91ba55 100644
--- a/clippy_utils/src/source.rs
+++ b/clippy_utils/src/source.rs
@@ -2,13 +2,12 @@
 
 #![allow(clippy::module_name_repetitions)]
 
-use crate::line_span;
 use rustc_errors::Applicability;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LintContext};
 use rustc_span::hygiene;
-use rustc_span::source_map::SourceMap;
-use rustc_span::{BytePos, Pos, Span, SpanData, SyntaxContext};
+use rustc_span::source_map::{original_sp, SourceMap};
+use rustc_span::{BytePos, Pos, Span, SpanData, SyntaxContext, DUMMY_SP};
 use std::borrow::Cow;
 
 /// Like `snippet_block`, but add braces if the expr is not an `ExprKind::Block`.
@@ -55,6 +54,23 @@ fn first_char_in_first_line<T: LintContext>(cx: &T, span: Span) -> Option<BytePo
     })
 }
 
+/// Extends the span to the beginning of the spans line, incl. whitespaces.
+///
+/// ```rust
+///        let x = ();
+/// //             ^^
+/// // will be converted to
+///        let x = ();
+/// // ^^^^^^^^^^^^^^
+/// ```
+fn line_span<T: LintContext>(cx: &T, span: Span) -> Span {
+    let span = original_sp(span, DUMMY_SP);
+    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(|lines| lines[line_no]);
+    span.with_lo(line_start)
+}
+
 /// Returns the indentation of the line of a span
 ///
 /// ```rust,ignore