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.

15 files changed, 16 insertions, 24 deletions

diff --git a/clippy_lints/src/methods/expect_fun_call.rs b/clippy_lints/src/methods/expect_fun_call.rs
index 40e487bf650..a49970b5351 100644
--- a/clippy_lints/src/methods/expect_fun_call.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/filetype_is_file.rs b/clippy_lints/src/methods/filetype_is_file.rs
index 3fef53739fb..7818be81119 100644
--- a/clippy_lints/src/methods/filetype_is_file.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/filter_map.rs b/clippy_lints/src/methods/filter_map.rs
index c9eaa185acc..597e0da238e 100644
--- a/clippy_lints/src/methods/filter_map.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/filter_map_identity.rs b/clippy_lints/src/methods/filter_map_identity.rs
index 20878f1e4df..8291c373f37 100644
--- a/clippy_lints/src/methods/filter_map_identity.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/flat_map_identity.rs b/clippy_lints/src/methods/flat_map_identity.rs
index 8849a4f4942..651ea34f9d0 100644
--- a/clippy_lints/src/methods/flat_map_identity.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/flat_map_option.rs b/clippy_lints/src/methods/flat_map_option.rs
index 172c397fbc8..0a4a381b861 100644
--- a/clippy_lints/src/methods/flat_map_option.rs
+++ b/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;
diff --git a/clippy_lints/src/methods/inspect_for_each.rs b/clippy_lints/src/methods/inspect_for_each.rs
index 23cc192c38e..ad4b6fa130e 100644
--- a/clippy_lints/src/methods/inspect_for_each.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/into_iter_on_ref.rs b/clippy_lints/src/methods/into_iter_on_ref.rs
index 8adf9e37059..bbd964c1099 100644
--- a/clippy_lints/src/methods/into_iter_on_ref.rs
+++ b/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;
diff --git a/clippy_lints/src/methods/map_identity.rs b/clippy_lints/src/methods/map_identity.rs
index 57581363cfa..bcfd0de8efe 100644
--- a/clippy_lints/src/methods/map_identity.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/open_options.rs b/clippy_lints/src/methods/open_options.rs
index c0f5a279945..65c986dcacc 100644
--- a/clippy_lints/src/methods/open_options.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/option_map_unwrap_or.rs b/clippy_lints/src/methods/option_map_unwrap_or.rs
index fcbe005fb28..605a89cd708 100644
--- a/clippy_lints/src/methods/option_map_unwrap_or.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/or_fun_call.rs b/clippy_lints/src/methods/or_fun_call.rs
index 942f3bd79a6..94527d67ac1 100644
--- a/clippy_lints/src/methods/or_fun_call.rs
+++ b/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};
 
diff --git a/clippy_lints/src/methods/search_is_some.rs b/clippy_lints/src/methods/search_is_some.rs
index 04ddaaa2f46..05a9a06c8c7 100644
--- a/clippy_lints/src/methods/search_is_some.rs
+++ b/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;
diff --git a/clippy_lints/src/methods/unnecessary_fold.rs b/clippy_lints/src/methods/unnecessary_fold.rs
index 6e23754bf46..6d51c4ab054 100644
--- a/clippy_lints/src/methods/unnecessary_fold.rs
+++ b/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;
 
diff --git a/clippy_lints/src/methods/wrong_self_convention.rs b/clippy_lints/src/methods/wrong_self_convention.rs
index 1fbf783b886..0a810a13f3f 100644
--- a/clippy_lints/src/methods/wrong_self_convention.rs
+++ b/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;