Minimize pub usage in source_map.rs.

Most notably, this commit changes the `pub use crate::*;` in that file
to `use crate::*;`. This requires a lot of `use` items in other crates
to be adjusted, because everything defined within `rustc_span::*` was
also available via `rustc_span::source_map::*`, which is bizarre.

The commit also removes `SourceMap::span_to_relative_line_string`, which
is unused.

compiler/rustc_ast_lowering/src/expr.rs

@@ -15,9 +15,10 @@ use rustc_hir as hir;
 use rustc_hir::def::Res;
 use rustc_hir::definitions::DefPathData;
 use rustc_session::errors::report_lit_error;
-use rustc_span::source_map::{respan, DesugaringKind, Span, Spanned};
+use rustc_span::source_map::{respan, Spanned};
 use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::DUMMY_SP;
+use rustc_span::{DesugaringKind, Span};
 use thin_vec::{thin_vec, ThinVec};
 
 impl<'hir> LoweringContext<'_, 'hir> {

compiler/rustc_ast_lowering/src/item.rs

@@ -16,9 +16,8 @@ use rustc_hir::PredicateOrigin;
 use rustc_index::{Idx, IndexSlice, IndexVec};
 use rustc_middle::ty::{ResolverAstLowering, TyCtxt};
 use rustc_span::edit_distance::find_best_match_for_name;
-use rustc_span::source_map::DesugaringKind;
 use rustc_span::symbol::{kw, sym, Ident};
-use rustc_span::{Span, Symbol};
+use rustc_span::{DesugaringKind, Span, Symbol};
 use rustc_target::spec::abi;
 use smallvec::{smallvec, SmallVec};
 use thin_vec::ThinVec;

compiler/rustc_ast_lowering/src/lib.rs

@@ -71,9 +71,8 @@ use rustc_middle::{
 };
 use rustc_session::parse::{add_feature_diagnostics, feature_err};
 use rustc_span::hygiene::MacroKind;
-use rustc_span::source_map::DesugaringKind;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
-use rustc_span::{Span, DUMMY_SP};
+use rustc_span::{DesugaringKind, Span, DUMMY_SP};
 use smallvec::SmallVec;
 use std::collections::hash_map::Entry;
 use thin_vec::ThinVec;

compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -9,9 +9,8 @@ use rustc_middle::{
     hir::place::PlaceBase,
     mir::{self, BindingForm, Local, LocalDecl, LocalInfo, LocalKind, Location},
 };
-use rustc_span::source_map::DesugaringKind;
 use rustc_span::symbol::{kw, Symbol};
-use rustc_span::{sym, BytePos, Span};
+use rustc_span::{sym, BytePos, DesugaringKind, Span};
 use rustc_target::abi::FieldIdx;
 
 use crate::diagnostics::BorrowedContentSource;

compiler/rustc_borrowck/src/diagnostics/var_name.rs

@@ -6,8 +6,8 @@ use crate::Upvar;
 use rustc_index::IndexSlice;
 use rustc_middle::mir::{Body, Local};
 use rustc_middle::ty::{RegionVid, TyCtxt};
-use rustc_span::source_map::Span;
 use rustc_span::symbol::Symbol;
+use rustc_span::Span;
 
 impl<'tcx> RegionInferenceContext<'tcx> {
     pub(crate) fn get_var_name_and_span_for_region(

compiler/rustc_builtin_macros/src/deriving/generic/ty.rs

@@ -6,9 +6,10 @@ pub use Ty::*;
 use rustc_ast::ptr::P;
 use rustc_ast::{self as ast, Expr, GenericArg, GenericParamKind, Generics, SelfKind};
 use rustc_expand::base::ExtCtxt;
-use rustc_span::source_map::{respan, DUMMY_SP};
+use rustc_span::source_map::respan;
 use rustc_span::symbol::{kw, Ident, Symbol};
 use rustc_span::Span;
+use rustc_span::DUMMY_SP;
 use thin_vec::ThinVec;
 
 /// A path, e.g., `::std::option::Option::<i32>` (global). Has support

compiler/rustc_codegen_llvm/src/context.rs

@@ -26,8 +26,8 @@ use rustc_middle::{bug, span_bug};
 use rustc_session::config::{BranchProtection, CFGuard, CFProtection};
 use rustc_session::config::{CrateType, DebugInfo, PAuthKey, PacRet};
 use rustc_session::Session;
-use rustc_span::source_map::Span;
 use rustc_span::source_map::Spanned;
+use rustc_span::Span;
 use rustc_target::abi::{
     call::FnAbi, HasDataLayout, PointeeInfo, Size, TargetDataLayout, VariantIdx,
 };

compiler/rustc_codegen_ssa/src/mir/block.rs

@@ -17,8 +17,7 @@ use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, ValidityRequirement};
 use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
 use rustc_middle::ty::{self, Instance, Ty};
 use rustc_session::config::OptLevel;
-use rustc_span::source_map::Span;
-use rustc_span::{sym, Symbol};
+use rustc_span::{sym, Span, Symbol};
 use rustc_target::abi::call::{ArgAbi, FnAbi, PassMode, Reg};
 use rustc_target::abi::{self, HasDataLayout, WrappingRange};
 use rustc_target::spec::abi::Abi;

compiler/rustc_codegen_ssa/src/mir/rvalue.rs

@@ -13,7 +13,7 @@ use rustc_middle::ty::cast::{CastTy, IntTy};
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, TyAndLayout};
 use rustc_middle::ty::{self, adjustment::PointerCoercion, Instance, Ty, TyCtxt};
 use rustc_session::config::OptLevel;
-use rustc_span::source_map::{Span, DUMMY_SP};
+use rustc_span::{Span, DUMMY_SP};
 use rustc_target::abi::{self, FIRST_VARIANT};
 
 impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {

compiler/rustc_const_eval/src/const_eval/eval_queries.rs

@@ -10,7 +10,7 @@ use rustc_middle::traits::Reveal;
 use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::ty::print::with_no_trimmed_paths;
 use rustc_middle::ty::{self, TyCtxt};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_target::abi::{self, Abi};
 
 use super::{CanAccessStatics, CompileTimeEvalContext, CompileTimeInterpreter};

compiler/rustc_const_eval/src/const_eval/mod.rs

@@ -6,7 +6,7 @@ use rustc_middle::mir;
 use rustc_middle::mir::interpret::{EvalToValTreeResult, GlobalId};
 use rustc_middle::query::TyCtxtAt;
 use rustc_middle::ty::{self, Ty, TyCtxt};
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 
 mod error;
 mod eval_queries;

compiler/rustc_const_eval/src/const_eval/valtrees.rs

@@ -10,7 +10,7 @@ use crate::interpret::{
 use rustc_middle::mir;
 use rustc_middle::ty::layout::{LayoutCx, LayoutOf, TyAndLayout};
 use rustc_middle::ty::{self, ScalarInt, Ty, TyCtxt};
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 use rustc_target::abi::VariantIdx;
 
 #[instrument(skip(ecx), level = "debug")]

compiler/rustc_driver_impl/src/lib.rs

@@ -43,8 +43,9 @@ use rustc_session::cstore::MetadataLoader;
 use rustc_session::getopts::{self, Matches};
 use rustc_session::lint::{Lint, LintId};
 use rustc_session::{config, EarlyErrorHandler, Session};
-use rustc_span::source_map::{FileLoader, FileName};
+use rustc_span::source_map::FileLoader;
 use rustc_span::symbol::sym;
+use rustc_span::FileName;
 use rustc_target::json::ToJson;
 use rustc_target::spec::{Target, TargetTriple};
 

compiler/rustc_expand/src/placeholders.rs

@@ -4,8 +4,8 @@ use rustc_ast::mut_visit::*;
 use rustc_ast::ptr::P;
 use rustc_ast::token::Delimiter;
 use rustc_data_structures::fx::FxHashMap;
-use rustc_span::source_map::DUMMY_SP;
 use rustc_span::symbol::Ident;
+use rustc_span::DUMMY_SP;
 use smallvec::{smallvec, SmallVec};
 use thin_vec::ThinVec;
 

compiler/rustc_hir_analysis/src/check/mod.rs

@@ -90,9 +90,8 @@ use rustc_middle::ty::error::{ExpectedFound, TypeError};
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_middle::ty::{GenericArgs, GenericArgsRef};
 use rustc_session::parse::feature_err;
-use rustc_span::source_map::DUMMY_SP;
 use rustc_span::symbol::{kw, Ident};
-use rustc_span::{self, def_id::CRATE_DEF_ID, BytePos, Span, Symbol};
+use rustc_span::{self, def_id::CRATE_DEF_ID, BytePos, Span, Symbol, DUMMY_SP};
 use rustc_target::abi::VariantIdx;
 use rustc_target::spec::abi::Abi;
 use rustc_trait_selection::traits::error_reporting::suggestions::ReturnsVisitor;

compiler/rustc_hir_analysis/src/constrained_generic_params.rs

@@ -1,7 +1,7 @@
 use rustc_data_structures::fx::FxHashSet;
 use rustc_middle::ty::visit::{TypeSuperVisitable, TypeVisitable, TypeVisitor};
 use rustc_middle::ty::{self, Ty, TyCtxt};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use std::ops::ControlFlow;
 
 #[derive(Clone, PartialEq, Eq, Hash, Debug)]

compiler/rustc_hir_typeck/src/closure.rs

@@ -14,8 +14,7 @@ use rustc_middle::ty::visit::{TypeVisitable, TypeVisitableExt};
 use rustc_middle::ty::GenericArgs;
 use rustc_middle::ty::{self, Ty, TyCtxt, TypeSuperVisitable, TypeVisitor};
 use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 use rustc_target::spec::abi::Abi;
 use rustc_trait_selection::traits;
 use rustc_trait_selection::traits::error_reporting::ArgKind;

compiler/rustc_hir_typeck/src/diverges.rs

@@ -1,5 +1,4 @@
-use rustc_span::source_map::DUMMY_SP;
-use rustc_span::{self, Span};
+use rustc_span::{self, Span, DUMMY_SP};
 use std::{cmp, ops};
 
 /// Tracks whether executing a node may exit normally (versus

compiler/rustc_hir_typeck/src/expr.rs

@@ -52,8 +52,9 @@ use rustc_session::errors::ExprParenthesesNeeded;
 use rustc_session::parse::feature_err;
 use rustc_span::edit_distance::find_best_match_for_name;
 use rustc_span::hygiene::DesugaringKind;
-use rustc_span::source_map::{Span, Spanned};
+use rustc_span::source_map::Spanned;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
+use rustc_span::Span;
 use rustc_target::abi::{FieldIdx, FIRST_VARIANT};
 use rustc_target::spec::abi::Abi::RustIntrinsic;
 use rustc_trait_selection::infer::InferCtxtExt;

compiler/rustc_hir_typeck/src/pat.rs

@@ -17,8 +17,9 @@ use rustc_middle::ty::{self, Adt, BindingMode, Ty, TypeVisitableExt};
 use rustc_session::lint::builtin::NON_EXHAUSTIVE_OMITTED_PATTERNS;
 use rustc_span::edit_distance::find_best_match_for_name;
 use rustc_span::hygiene::DesugaringKind;
-use rustc_span::source_map::{Span, Spanned};
+use rustc_span::source_map::Spanned;
 use rustc_span::symbol::{kw, sym, Ident};
+use rustc_span::Span;
 use rustc_span::{BytePos, DUMMY_SP};
 use rustc_target::abi::FieldIdx;
 use rustc_trait_selection::traits::{ObligationCause, Pattern};

compiler/rustc_infer/src/infer/canonical/mod.rs

@@ -27,7 +27,7 @@ use rustc_index::IndexVec;
 use rustc_middle::ty::fold::TypeFoldable;
 use rustc_middle::ty::GenericArg;
 use rustc_middle::ty::{self, List, Ty, TyCtxt};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 pub use rustc_middle::infer::canonical::*;
 pub use substitute::CanonicalExt;

compiler/rustc_infer/src/infer/error_reporting/nice_region_error/mod.rs

@@ -3,7 +3,7 @@ use crate::infer::lexical_region_resolve::RegionResolutionError;
 use crate::infer::lexical_region_resolve::RegionResolutionError::*;
 use rustc_errors::{DiagnosticBuilder, ErrorGuaranteed};
 use rustc_middle::ty::{self, TyCtxt};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 mod different_lifetimes;
 pub mod find_anon_type;

compiler/rustc_interface/src/interface.rs

@@ -21,8 +21,9 @@ use rustc_session::config::{
 use rustc_session::filesearch::sysroot_candidates;
 use rustc_session::parse::ParseSess;
 use rustc_session::{lint, CompilerIO, EarlyErrorHandler, Session};
-use rustc_span::source_map::{FileLoader, FileName};
+use rustc_span::source_map::FileLoader;
 use rustc_span::symbol::sym;
+use rustc_span::FileName;
 use std::path::PathBuf;
 use std::result;
 use std::sync::Arc;

compiler/rustc_middle/src/lint.rs

@@ -9,9 +9,8 @@ use rustc_session::lint::{
     FutureIncompatibilityReason, Level, Lint, LintId,
 };
 use rustc_session::Session;
-use rustc_span::hygiene::MacroKind;
-use rustc_span::source_map::{DesugaringKind, ExpnKind};
-use rustc_span::{symbol, Span, Symbol, DUMMY_SP};
+use rustc_span::hygiene::{ExpnKind, MacroKind};
+use rustc_span::{symbol, DesugaringKind, Span, Symbol, DUMMY_SP};
 
 use crate::ty::TyCtxt;
 

compiler/rustc_middle/src/mir/mono.rs

@@ -10,8 +10,8 @@ use rustc_hir::ItemId;
 use rustc_index::Idx;
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::config::OptLevel;
-use rustc_span::source_map::Span;
 use rustc_span::symbol::Symbol;
+use rustc_span::Span;
 use std::fmt;
 use std::hash::Hash;
 

compiler/rustc_middle/src/traits/query.rs

@@ -10,7 +10,7 @@ use crate::infer::canonical::{Canonical, QueryResponse};
 use crate::ty::error::TypeError;
 use crate::ty::GenericArg;
 use crate::ty::{self, Ty, TyCtxt};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 pub mod type_op {
     use crate::ty::fold::TypeFoldable;

compiler/rustc_monomorphize/src/collector.rs

@@ -186,8 +186,9 @@ use rustc_middle::{middle::codegen_fn_attrs::CodegenFnAttrFlags, mir::visit::TyC
 use rustc_session::config::EntryFnType;
 use rustc_session::lint::builtin::LARGE_ASSIGNMENTS;
 use rustc_session::Limit;
-use rustc_span::source_map::{dummy_spanned, respan, Span, Spanned, DUMMY_SP};
+use rustc_span::source_map::{dummy_spanned, respan, Spanned};
 use rustc_span::symbol::{sym, Ident};
+use rustc_span::{Span, DUMMY_SP};
 use rustc_target::abi::Size;
 use std::path::PathBuf;
 

compiler/rustc_parse/src/parser/expr.rs

@@ -32,10 +32,10 @@ use rustc_macros::Subdiagnostic;
 use rustc_session::errors::{report_lit_error, ExprParenthesesNeeded};
 use rustc_session::lint::builtin::BREAK_WITH_LABEL_AND_LOOP;
 use rustc_session::lint::BuiltinLintDiagnostics;
-use rustc_span::source_map::{self, Span, Spanned};
+use rustc_span::source_map::{self, Spanned};
 use rustc_span::symbol::kw::PathRoot;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
-use rustc_span::{BytePos, Pos};
+use rustc_span::{BytePos, Pos, Span};
 use thin_vec::{thin_vec, ThinVec};
 
 /// Possibly accepts an `token::Interpolated` expression (a pre-parsed expression

compiler/rustc_parse/src/parser/item.rs

@@ -22,9 +22,9 @@ use rustc_errors::{
 };
 use rustc_span::edit_distance::edit_distance;
 use rustc_span::edition::Edition;
-use rustc_span::source_map::{self, Span};
+use rustc_span::source_map;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
-use rustc_span::DUMMY_SP;
+use rustc_span::{Span, DUMMY_SP};
 use std::fmt::Write;
 use std::mem;
 use thin_vec::{thin_vec, ThinVec};

compiler/rustc_parse/src/parser/mod.rs

@@ -36,8 +36,8 @@ use rustc_errors::{
     Applicability, DiagnosticBuilder, ErrorGuaranteed, FatalError, IntoDiagnostic, MultiSpan,
 };
 use rustc_session::parse::ParseSess;
-use rustc_span::source_map::{Span, DUMMY_SP};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
+use rustc_span::{Span, DUMMY_SP};
 use std::ops::Range;
 use std::{mem, slice};
 use thin_vec::ThinVec;

compiler/rustc_parse/src/parser/pat.rs

@@ -20,8 +20,9 @@ use rustc_ast::{
 use rustc_ast_pretty::pprust;
 use rustc_errors::{Applicability, DiagnosticBuilder, ErrorGuaranteed, IntoDiagnostic, PResult};
 use rustc_session::errors::ExprParenthesesNeeded;
-use rustc_span::source_map::{respan, Span, Spanned};
+use rustc_span::source_map::{respan, Spanned};
 use rustc_span::symbol::{kw, sym, Ident};
+use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
 #[derive(PartialEq, Copy, Clone)]

compiler/rustc_parse/src/parser/path.rs

@@ -10,8 +10,8 @@ use rustc_ast::{
     Path, PathSegment, QSelf,
 };
 use rustc_errors::{Applicability, IntoDiagnostic, PResult};
-use rustc_span::source_map::{BytePos, Span};
 use rustc_span::symbol::{kw, sym, Ident};
+use rustc_span::{BytePos, Span};
 use std::mem;
 use thin_vec::ThinVec;
 use tracing::debug;

compiler/rustc_parse/src/parser/stmt.rs

@@ -20,8 +20,8 @@ use rustc_ast::{AttrStyle, AttrVec, LocalKind, MacCall, MacCallStmt, MacStmtStyl
 use rustc_ast::{Block, BlockCheckMode, Expr, ExprKind, HasAttrs, Local, Stmt};
 use rustc_ast::{StmtKind, DUMMY_NODE_ID};
 use rustc_errors::{Applicability, DiagnosticBuilder, ErrorGuaranteed, PResult};
-use rustc_span::source_map::{BytePos, Span};
 use rustc_span::symbol::{kw, sym, Ident};
+use rustc_span::{BytePos, Span};
 
 use std::borrow::Cow;
 use std::mem;

compiler/rustc_parse/src/parser/ty.rs

@@ -18,9 +18,8 @@ use rustc_ast::{
     TraitObjectSyntax, Ty, TyKind,
 };
 use rustc_errors::{Applicability, PResult};
-use rustc_span::source_map::Span;
 use rustc_span::symbol::{kw, sym, Ident};
-use rustc_span::Symbol;
+use rustc_span::{Span, Symbol};
 use thin_vec::{thin_vec, ThinVec};
 
 /// Any `?`, `!`, or `~const` modifiers that appear at the start of a bound.

compiler/rustc_session/src/config.rs

@@ -18,10 +18,9 @@ use rustc_target::spec::{Target, TargetTriple, TargetWarnings, TARGETS};
 
 use rustc_feature::UnstableFeatures;
 use rustc_span::edition::{Edition, DEFAULT_EDITION, EDITION_NAME_LIST, LATEST_STABLE_EDITION};
-use rustc_span::source_map::{FileName, FilePathMapping};
+use rustc_span::source_map::FilePathMapping;
 use rustc_span::symbol::{sym, Symbol};
-use rustc_span::SourceFileHashAlgorithm;
-use rustc_span::{FileNameDisplayPreference, RealFileName};
+use rustc_span::{FileName, FileNameDisplayPreference, RealFileName, SourceFileHashAlgorithm};
 
 use rustc_errors::emitter::HumanReadableErrorType;
 use rustc_errors::{ColorConfig, DiagnosticArgValue, HandlerFlags, IntoDiagnosticArg};

compiler/rustc_session/src/session.rs

@@ -31,8 +31,8 @@ use rustc_errors::{
 use rustc_macros::HashStable_Generic;
 pub use rustc_span::def_id::StableCrateId;
 use rustc_span::edition::Edition;
-use rustc_span::source_map::{FileLoader, RealFileLoader, SourceMap, Span};
-use rustc_span::{SourceFileHashAlgorithm, Symbol};
+use rustc_span::source_map::{FileLoader, RealFileLoader, SourceMap};
+use rustc_span::{SourceFileHashAlgorithm, Span, Symbol};
 use rustc_target::asm::InlineAsmArch;
 use rustc_target::spec::{CodeModel, PanicStrategy, RelocModel, RelroLevel};
 use rustc_target::spec::{

compiler/rustc_span/src/source_map.rs

@@ -9,20 +9,15 @@
 //! within the `SourceMap`, which upon request can be converted to line and column
 //! information, source code snippets, etc.
 
-pub use crate::hygiene::{ExpnData, ExpnKind};
-pub use crate::*;
-
+use crate::*;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::stable_hasher::{Hash128, Hash64, StableHasher};
 use rustc_data_structures::sync::{IntoDynSyncSend, Lrc, MappedReadGuard, ReadGuard, RwLock};
 use std::cmp;
-use std::hash::Hash;
-use std::path::{self, Path, PathBuf};
-
 use std::fs;
-use std::io;
-use std::io::BorrowedBuf;
-use std::io::Read;
+use std::hash::Hash;
+use std::io::{self, BorrowedBuf, Read};
+use std::path::{self, Path, PathBuf};
 
 #[cfg(test)]
 mod tests;
@@ -41,7 +36,7 @@ pub fn original_sp(sp: Span, enclosing_sp: Span) -> Span {
     }
 }
 
-pub mod monotonic {
+mod monotonic {
     use std::ops::{Deref, DerefMut};
 
     /// A `MonotonicVec` is a `Vec` which can only be grown.
@@ -51,18 +46,14 @@ pub mod monotonic {
     // field is inaccessible
     pub struct MonotonicVec<T>(Vec<T>);
     impl<T> MonotonicVec<T> {
-        pub fn new(val: Vec<T>) -> MonotonicVec<T> {
-            MonotonicVec(val)
-        }
-
-        pub fn push(&mut self, val: T) {
+        pub(super) fn push(&mut self, val: T) {
             self.0.push(val);
         }
     }
 
     impl<T> Default for MonotonicVec<T> {
         fn default() -> Self {
-            MonotonicVec::new(vec![])
+            MonotonicVec(vec![])
         }
     }
 
@@ -207,7 +198,7 @@ impl StableSourceFileId {
 //
 
 #[derive(Default)]
-pub(super) struct SourceMapFiles {
+struct SourceMapFiles {
     source_files: monotonic::MonotonicVec<Lrc<SourceFile>>,
     stable_id_to_source_file: FxHashMap<StableSourceFileId, Lrc<SourceFile>>,
 }
@@ -466,33 +457,6 @@ impl SourceMap {
         self.span_to_string(sp, FileNameDisplayPreference::Remapped)
     }
 
-    /// Format the span location suitable for pretty printing annotations with relative line numbers
-    pub fn span_to_relative_line_string(&self, sp: Span, relative_to: Span) -> String {
-        if self.files.borrow().source_files.is_empty() || sp.is_dummy() || relative_to.is_dummy() {
-            return "no-location".to_string();
-        }
-
-        let lo = self.lookup_char_pos(sp.lo());
-        let hi = self.lookup_char_pos(sp.hi());
-        let offset = self.lookup_char_pos(relative_to.lo());
-
-        if lo.file.name != offset.file.name || !relative_to.contains(sp) {
-            return self.span_to_embeddable_string(sp);
-        }
-
-        let lo_line = lo.line.saturating_sub(offset.line);
-        let hi_line = hi.line.saturating_sub(offset.line);
-
-        format!(
-            "{}:+{}:{}: +{}:{}",
-            lo.file.name.display(FileNameDisplayPreference::Remapped),
-            lo_line,
-            lo.col.to_usize() + 1,
-            hi_line,
-            hi.col.to_usize() + 1,
-        )
-    }
-
     /// Format the span location to be printed in diagnostics. Must not be emitted
     /// to build artifacts as this may leak local file paths. Use span_to_embeddable_string
     /// for string suitable for embedding.

compiler/rustc_trait_selection/src/traits/query/dropck_outlives.rs

@@ -5,7 +5,7 @@ use crate::traits::{Normalized, ObligationCause, ObligationCtxt};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_middle::traits::query::{DropckConstraint, DropckOutlivesResult};
 use rustc_middle::ty::{self, EarlyBinder, ParamEnvAnd, Ty, TyCtxt};
-use rustc_span::source_map::{Span, DUMMY_SP};
+use rustc_span::{Span, DUMMY_SP};
 
 /// This returns true if the type `ty` is "trivial" for
 /// dropck-outlives -- that is, if it doesn't require any types to

compiler/rustc_trait_selection/src/traits/query/type_op/custom.rs

@@ -6,8 +6,7 @@ use rustc_errors::ErrorGuaranteed;
 use rustc_infer::infer::region_constraints::RegionConstraintData;
 use rustc_middle::traits::query::NoSolution;
 use rustc_middle::ty::{TyCtxt, TypeFoldable};
-use rustc_span::source_map::DUMMY_SP;
-use rustc_span::Span;
+use rustc_span::{Span, DUMMY_SP};
 
 use std::fmt;
 

compiler/rustc_trait_selection/src/traits/query/type_op/implied_outlives_bounds.rs

@@ -10,7 +10,7 @@ use rustc_middle::infer::canonical::CanonicalQueryResponse;
 use rustc_middle::traits::ObligationCause;
 use rustc_middle::ty::{self, ParamEnvAnd, Ty, TyCtxt, TypeVisitableExt};
 use rustc_span::def_id::CRATE_DEF_ID;
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 use smallvec::{smallvec, SmallVec};
 
 #[derive(Copy, Clone, Debug, HashStable, TypeFoldable, TypeVisitable)]

compiler/rustc_traits/src/evaluate_obligation.rs

@@ -1,7 +1,7 @@
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_middle::query::Providers;
 use rustc_middle::ty::{ParamEnvAnd, TyCtxt};
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 use rustc_trait_selection::traits::query::CanonicalPredicateGoal;
 use rustc_trait_selection::traits::{
     EvaluationResult, Obligation, ObligationCause, OverflowError, SelectionContext, TraitQueryMode,

src/librustdoc/clean/types/tests.rs

@@ -1,9 +1,8 @@
 use super::*;
 
 use rustc_resolve::rustdoc::{unindent_doc_fragments, DocFragment, DocFragmentKind};
-use rustc_span::create_default_session_globals_then;
-use rustc_span::source_map::DUMMY_SP;
 use rustc_span::symbol::Symbol;
+use rustc_span::{create_default_session_globals_then, DUMMY_SP};
 
 fn create_doc_fragment(s: &str) -> Vec<DocFragment> {
     vec![DocFragment {

src/librustdoc/html/render/context.rs

@@ -10,8 +10,7 @@ use rustc_hir::def_id::{DefIdMap, LOCAL_CRATE};
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
 use rustc_span::edition::Edition;
-use rustc_span::source_map::FileName;
-use rustc_span::{sym, Symbol};
+use rustc_span::{sym, FileName, Symbol};
 
 use super::print_item::{full_path, item_path, print_item};
 use super::search_index::build_index;

src/librustdoc/html/sources.rs

@@ -13,8 +13,7 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_hir::def_id::LOCAL_CRATE;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
-use rustc_span::source_map::FileName;
-use rustc_span::sym;
+use rustc_span::{sym, FileName};
 
 use std::cell::RefCell;
 use std::ffi::OsStr;

src/librustdoc/markdown.rs

@@ -4,7 +4,7 @@ use std::io::prelude::*;
 use std::path::Path;
 
 use rustc_span::edition::Edition;
-use rustc_span::source_map::DUMMY_SP;
+use rustc_span::DUMMY_SP;
 
 use crate::config::{Options, RenderOptions};
 use crate::doctest::{Collector, GlobalTestOptions};

src/tools/clippy/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] = &[

src/tools/clippy/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

src/tools/clippy/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;
 

src/tools/clippy/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};
 

src/tools/clippy/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;
 

src/tools/clippy/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;
 

src/tools/clippy/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

src/tools/clippy/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

src/tools/clippy/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;

src/tools/clippy/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;
 

src/tools/clippy/clippy_lints/src/formatting.rs

@@ -6,7 +6,7 @@ use rustc_ast::ast::{BinOpKind, Block, Expr, ExprKind, StmtKind, UnOp};
 use rustc_lint::{EarlyContext, EarlyLintPass, LintContext};
 use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/implicit_hasher.rs

@@ -10,7 +10,7 @@ use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::ty::{Ty, TypeckResults};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::sym;
 
 use if_chain::if_chain;

src/tools/clippy/clippy_lints/src/item_name_repetitions.rs

@@ -7,7 +7,7 @@ use clippy_utils::str_utils::{camel_case_split, count_match_end, count_match_sta
 use rustc_hir::{EnumDef, FieldDef, Item, ItemKind, OwnerId, Variant, VariantData};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::Symbol;
 
 declare_clippy_lint! {

src/tools/clippy/clippy_lints/src/large_enum_variant.rs

@@ -9,7 +9,7 @@ use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::lint::in_external_macro;
 use rustc_middle::ty::{Adt, Ty};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/len_zero.rs

@@ -15,7 +15,8 @@ use rustc_hir::{
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::{self, AssocKind, FnSig, Ty};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::{Span, Spanned, Symbol};
+use rustc_span::{Span, Symbol};
+use rustc_span::source_map::Spanned;
 use rustc_span::symbol::sym;
 
 declare_clippy_lint! {

src/tools/clippy/clippy_lints/src/lifetimes.rs

@@ -20,7 +20,7 @@ use rustc_middle::hir::nested_filter as middle_nested_filter;
 use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::{kw, Ident, Symbol};
 
 declare_clippy_lint! {

src/tools/clippy/clippy_lints/src/loops/manual_find.rs

@@ -10,7 +10,7 @@ use rustc_hir::def::Res;
 use rustc_hir::lang_items::LangItem;
 use rustc_hir::{BindingAnnotation, Block, Expr, ExprKind, HirId, Node, Pat, PatKind, Stmt, StmtKind};
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 pub(super) fn check<'tcx>(
     cx: &LateContext<'tcx>,

src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs

@@ -9,7 +9,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_hir::{Expr, Pat, PatKind};
 use rustc_lint::LateContext;
 use rustc_middle::ty;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 /// Check for unnecessary `if let` usage in a for loop where only the `Some` or `Ok` variant of the
 /// iterator element is used.

src/tools/clippy/clippy_lints/src/loops/mod.rs

@@ -24,7 +24,7 @@ use clippy_utils::msrvs::Msrv;
 use rustc_hir::{Expr, ExprKind, LoopSource, Pat};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use utils::{make_iterator_snippet, IncrementVisitor, InitializeVisitor};
 
 declare_clippy_lint! {

src/tools/clippy/clippy_lints/src/loops/mut_range_bound.rs

@@ -9,7 +9,7 @@ use rustc_infer::infer::TyCtxtInferExt;
 use rustc_lint::LateContext;
 use rustc_middle::mir::FakeReadCause;
 use rustc_middle::ty;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 pub(super) fn check(cx: &LateContext<'_>, arg: &Expr<'_>, body: &Expr<'_>) {
     if_chain! {

src/tools/clippy/clippy_lints/src/map_unit_fn.rs

@@ -8,8 +8,7 @@ use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::{self, Ty};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/mem_replace.rs

@@ -11,7 +11,7 @@ use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::sym;
 
 declare_clippy_lint! {

src/tools/clippy/clippy_lints/src/methods/expect_fun_call.rs

@@ -6,7 +6,7 @@ use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
 use rustc_middle::ty;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::sym;
 use std::borrow::Cow;
 

src/tools/clippy/clippy_lints/src/methods/filetype_is_file.rs

@@ -4,8 +4,7 @@ use clippy_utils::ty::is_type_diagnostic_item;
 use if_chain::if_chain;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::FILETYPE_IS_FILE;
 

src/tools/clippy/clippy_lints/src/methods/filter_map.rs

@@ -11,7 +11,7 @@ use rustc_hir::def::Res;
 use rustc_hir::{Closure, Expr, ExprKind, PatKind, PathSegment, QPath, UnOp};
 use rustc_lint::LateContext;
 use rustc_middle::ty::adjustment::Adjust;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::{sym, Ident, Symbol};
 use std::borrow::Cow;
 

src/tools/clippy/clippy_lints/src/methods/filter_map_identity.rs

@@ -3,8 +3,7 @@ use clippy_utils::{is_expr_untyped_identity_function, is_trait_method};
 use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::FILTER_MAP_IDENTITY;
 

src/tools/clippy/clippy_lints/src/methods/flat_map_identity.rs

@@ -3,8 +3,7 @@ use clippy_utils::{is_expr_untyped_identity_function, is_trait_method};
 use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::FLAT_MAP_IDENTITY;
 

src/tools/clippy/clippy_lints/src/methods/flat_map_option.rs

@@ -4,8 +4,7 @@ use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
 use rustc_middle::ty;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::FLAT_MAP_OPTION;
 use clippy_utils::ty::is_type_diagnostic_item;

src/tools/clippy/clippy_lints/src/methods/inspect_for_each.rs

@@ -2,8 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_help;
 use clippy_utils::is_trait_method;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::INSPECT_FOR_EACH;
 

src/tools/clippy/clippy_lints/src/methods/into_iter_on_ref.rs

@@ -6,7 +6,7 @@ use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
 use rustc_middle::ty::{self, Ty};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::{sym, Symbol};
 
 use super::INTO_ITER_ON_REF;

src/tools/clippy/clippy_lints/src/methods/map_identity.rs

@@ -4,8 +4,7 @@ use clippy_utils::{is_expr_untyped_identity_function, is_trait_method};
 use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::MAP_IDENTITY;
 

src/tools/clippy/clippy_lints/src/methods/open_options.rs

@@ -3,8 +3,8 @@ use clippy_utils::ty::is_type_diagnostic_item;
 use rustc_ast::ast::LitKind;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::LateContext;
-use rustc_span::source_map::{Span, Spanned};
-use rustc_span::sym;
+use rustc_span::source_map::Spanned;
+use rustc_span::{sym, Span};
 
 use super::NONSENSICAL_OPEN_OPTIONS;
 

src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs

@@ -9,8 +9,7 @@ use rustc_hir::intravisit::{walk_path, Visitor};
 use rustc_hir::{self, ExprKind, HirId, Node, PatKind, Path, QPath};
 use rustc_lint::LateContext;
 use rustc_middle::hir::nested_filter;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::MAP_UNWRAP_OR;
 

src/tools/clippy/clippy_lints/src/methods/or_fun_call.rs

@@ -7,7 +7,7 @@ use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_lint::LateContext;
 use rustc_middle::ty;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::{self, sym, Symbol};
 use {rustc_ast as ast, rustc_hir as hir};
 

src/tools/clippy/clippy_lints/src/methods/search_is_some.rs

@@ -8,7 +8,7 @@ use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_hir::PatKind;
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use rustc_span::symbol::sym;
 
 use super::SEARCH_IS_SOME;

src/tools/clippy/clippy_lints/src/methods/unnecessary_fold.rs

@@ -8,8 +8,7 @@ use rustc_hir as hir;
 use rustc_hir::PatKind;
 use rustc_lint::LateContext;
 use rustc_middle::ty;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 use super::UNNECESSARY_FOLD;
 

src/tools/clippy/clippy_lints/src/methods/wrong_self_convention.rs

@@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_help;
 use clippy_utils::ty::is_copy;
 use rustc_lint::LateContext;
 use rustc_middle::ty::Ty;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 use std::fmt;
 
 use super::WRONG_SELF_CONVENTION;

src/tools/clippy/clippy_lints/src/misc.rs

@@ -16,7 +16,7 @@ use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 use crate::ref_patterns::REF_PATTERNS;
 

src/tools/clippy/clippy_lints/src/misc_early/mod.rs

@@ -17,7 +17,7 @@ use rustc_data_structures::fx::FxHashMap;
 use rustc_lint::{EarlyContext, EarlyLintPass, LintContext};
 use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/misc_early/unneeded_wildcard_pattern.rs

@@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg;
 use rustc_ast::ast::{Pat, PatKind};
 use rustc_errors::Applicability;
 use rustc_lint::EarlyContext;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 use super::UNNEEDED_WILDCARD_PATTERN;
 

src/tools/clippy/clippy_lints/src/missing_doc.rs

@@ -16,8 +16,7 @@ use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::ty::Visibility;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::def_id::CRATE_DEF_ID;
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/missing_inline.rs

@@ -3,8 +3,7 @@ use rustc_ast::ast;
 use rustc_hir as hir;
 use rustc_lint::{self, LateContext, LateLintPass, LintContext};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/mut_key.rs

@@ -8,7 +8,7 @@ use rustc_middle::query::Key;
 use rustc_middle::ty::{Adt, 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::sym;
 use std::iter;
 

src/tools/clippy/clippy_lints/src/needless_for_each.rs

@@ -3,8 +3,7 @@ use rustc_hir::intravisit::{walk_expr, Visitor};
 use rustc_hir::{Closure, Expr, ExprKind, Stmt, StmtKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
-use rustc_span::{sym, Symbol};
+use rustc_span::{sym, Span, Symbol};
 
 use if_chain::if_chain;
 

src/tools/clippy/clippy_lints/src/neg_multiply.rs

@@ -8,7 +8,7 @@ use rustc_errors::Applicability;
 use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/non_expressive_names.rs

@@ -6,8 +6,7 @@ use rustc_ast::visit::{walk_block, walk_expr, walk_pat, Visitor};
 use rustc_lint::{EarlyContext, EarlyLintPass, LintContext};
 use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 use rustc_span::symbol::{Ident, Symbol};
 use std::cmp::Ordering;
 

src/tools/clippy/clippy_lints/src/operators/arithmetic_side_effects.rs

@@ -7,9 +7,9 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::Ty;
 use rustc_session::impl_lint_pass;
-use rustc_span::source_map::{Span, Spanned};
+use rustc_span::{Span, Symbol};
+use rustc_span::source_map::Spanned;
 use rustc_span::symbol::sym;
-use rustc_span::Symbol;
 use {rustc_ast as ast, rustc_hir as hir};
 
 const HARD_CODED_ALLOWED_BINARY: &[[&str; 2]] = &[["f32", "f32"], ["f64", "f64"], ["std::string::String", "str"]];

src/tools/clippy/clippy_lints/src/operators/bit_mask.rs

@@ -2,7 +2,7 @@ use clippy_utils::consts::{constant, Constant};
 use clippy_utils::diagnostics::span_lint;
 use rustc_hir::{BinOpKind, Expr, ExprKind};
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 use super::{BAD_BIT_MASK, INEFFECTIVE_BIT_MASK};
 

src/tools/clippy/clippy_lints/src/operators/const_comparisons.rs

@@ -8,7 +8,8 @@ use rustc_hir::{BinOpKind, Expr, ExprKind};
 use rustc_lint::LateContext;
 use rustc_middle::ty::layout::HasTyCtxt;
 use rustc_middle::ty::{Ty, TypeckResults};
-use rustc_span::source_map::{Span, Spanned};
+use rustc_span::Span;
+use rustc_span::source_map::Spanned;
 
 use clippy_utils::diagnostics::span_lint_and_note;
 use clippy_utils::source::snippet;

src/tools/clippy/clippy_lints/src/operators/double_comparison.rs

@@ -4,7 +4,7 @@ use clippy_utils::source::snippet_with_applicability;
 use rustc_errors::Applicability;
 use rustc_hir::{BinOpKind, Expr, ExprKind};
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 use super::DOUBLE_COMPARISONS;
 

src/tools/clippy/clippy_lints/src/operators/identity_op.rs

@@ -6,7 +6,7 @@ use rustc_errors::Applicability;
 use rustc_hir::{BinOpKind, Expr, ExprKind, Node};
 use rustc_lint::LateContext;
 use rustc_middle::ty;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 use super::IDENTITY_OP;
 

src/tools/clippy/clippy_lints/src/operators/numeric_arithmetic.rs

@@ -3,7 +3,7 @@ use clippy_utils::consts::constant_simple;
 use clippy_utils::diagnostics::span_lint;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
-use rustc_span::source_map::Span;
+use rustc_span::Span;
 
 #[derive(Default)]
 pub struct Context {

src/tools/clippy/clippy_lints/src/pattern_type_mismatch.rs

@@ -5,7 +5,7 @@ use rustc_middle::lint::in_external_macro;
 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::Span;
 
 declare_clippy_lint! {
     /// ### What it does

src/tools/clippy/clippy_lints/src/ptr.rs

@@ -21,8 +21,7 @@ use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::ty::{self, Binder, ClauseKind, ExistentialPredicate, List, PredicateKind, Ty};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::Span;
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 use rustc_span::symbol::Symbol;
 use rustc_target::spec::abi::Abi;
 use rustc_trait_selection::infer::InferCtxtExt as _;

src/tools/clippy/clippy_lints/src/ranges.rs

@@ -11,7 +11,8 @@ use rustc_hir::{BinOpKind, Expr, ExprKind, HirId};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::source_map::{Span, Spanned};
+use rustc_span::Span;
+use rustc_span::source_map::Spanned;
 use std::cmp::Ordering;
 
 declare_clippy_lint! {