Auto merge of #117507 - nnethercote:rustc_span, r=Nilstrieb

`rustc_span` cleanups

Just some things I found while looking over this crate.

r? `@oli-obk`

Author: bors

clippy_lints/src/attrs.rs

@@ -19,9 +19,8 @@ use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass, Level,
 use rustc_middle::lint::in_external_macro;
 use rustc_middle::ty;
 use rustc_session::{declare_lint_pass, declare_tool_lint, impl_lint_pass};
-use rustc_span::source_map::Span;
 use rustc_span::symbol::Symbol;
-use rustc_span::{sym, DUMMY_SP};
+use rustc_span::{sym, DUMMY_SP, Span};
 use semver::Version;
 
 static UNIX_SYSTEMS: &[&str] = &[

clippy_lints/src/booleans.rs

@@ -10,8 +10,7 @@ use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, UnOp};
 use rustc_lint::{LateContext, LateLintPass, Level};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 declare_clippy_lint! {
     /// ### What it does

clippy_lints/src/cargo/common_metadata.rs

@@ -3,7 +3,7 @@
 use cargo_metadata::Metadata;
 use clippy_utils::diagnostics::span_lint;
 use rustc_lint::LateContext;
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 
 use super::CARGO_COMMON_METADATA;
 

clippy_lints/src/cargo/feature_name.rs

@@ -1,7 +1,7 @@
 use cargo_metadata::Metadata;
 use clippy_utils::diagnostics::span_lint_and_help;
 use rustc_lint::LateContext;
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 
 use super::{NEGATIVE_FEATURE_NAMES, REDUNDANT_FEATURE_NAMES};
 

clippy_lints/src/cargo/multiple_crate_versions.rs

@@ -6,7 +6,7 @@ use if_chain::if_chain;
 use itertools::Itertools;
 use rustc_hir::def_id::LOCAL_CRATE;
 use rustc_lint::LateContext;
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 
 use super::MULTIPLE_CRATE_VERSIONS;
 

clippy_lints/src/cargo/wildcard_dependencies.rs

@@ -2,7 +2,7 @@ use cargo_metadata::Metadata;
 use clippy_utils::diagnostics::span_lint;
 use if_chain::if_chain;
 use rustc_lint::LateContext;
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 
 use super::WILDCARD_DEPENDENCIES;
 

clippy_lints/src/cognitive_complexity.rs

@@ -12,8 +12,7 @@ use rustc_hir::{Body, Expr, ExprKind, FnDecl};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map::Span;
-use rustc_span::{sym, BytePos};
+use rustc_span::{sym, BytePos, Span};
 
 declare_clippy_lint! {
     /// ### What it does

clippy_lints/src/derive.rs

@@ -17,8 +17,7 @@ use rustc_middle::ty::{
 };
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 declare_clippy_lint! {
     /// ### What it does

clippy_lints/src/doc.rs

@@ -30,8 +30,8 @@ use rustc_resolve::rustdoc::{
 use rustc_session::parse::ParseSess;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::edition::Edition;
-use rustc_span::source_map::{BytePos, FilePathMapping, SourceMap, Span};
-use rustc_span::{sym, FileName, Pos};
+use rustc_span::{sym, BytePos, FileName, Pos, Span};
+use rustc_span::source_map::{FilePathMapping, SourceMap};
 use std::ops::Range;
 use std::{io, thread};
 use url::Url;

clippy_lints/src/escape.rs

@@ -8,7 +8,7 @@ use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::ty::{self, TraitRef, Ty};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::kw;
 use rustc_target::spec::abi::Abi;