Auto merge of #13213 - Alexendoo:multispan-sugg, r=y21

Remove `multispan_sugg[_with_applicability]`

They're thin wrappers over the corresponding diag method so we should just use that instead

changelog: none

12 files changed, 75 insertions, 82 deletions

diff --git a/clippy_lints/src/loops/for_kv_map.rs b/clippy_lints/src/loops/for_kv_map.rs
index 6922533fbe9..185d834beca 100644
--- a/clippy_lints/src/loops/for_kv_map.rs
+++ b/clippy_lints/src/loops/for_kv_map.rs
@@ -1,8 +1,9 @@
 use super::FOR_KV_MAP;
-use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet;
 use clippy_utils::ty::is_type_diagnostic_item;
 use clippy_utils::{pat_is_wild, sugg};
+use rustc_errors::Applicability;
 use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, Pat, PatKind};
 use rustc_lint::LateContext;
 use rustc_middle::ty;
@@ -40,13 +41,13 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, pat: &'tcx Pat<'_>, arg: &'tcx
                     format!("you seem to want to iterate on a map's {kind}s"),
                     |diag| {
                         let map = sugg::Sugg::hir(cx, arg, "map");
-                        multispan_sugg(
-                            diag,
+                        diag.multipart_suggestion(
                             "use the corresponding method",
                             vec![
                                 (pat_span, snippet(cx, new_pat_span, kind).into_owned()),
                                 (arg_span, format!("{}.{kind}s{mutbl}()", map.maybe_par())),
                             ],
+                            Applicability::MachineApplicable,
                         );
                     },
                 );
diff --git a/clippy_lints/src/loops/manual_while_let_some.rs b/clippy_lints/src/loops/manual_while_let_some.rs
index b00a082bb8c..57434f35544 100644
--- a/clippy_lints/src/loops/manual_while_let_some.rs
+++ b/clippy_lints/src/loops/manual_while_let_some.rs
@@ -1,4 +1,4 @@
-use clippy_utils::diagnostics::{multispan_sugg_with_applicability, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet;
 use clippy_utils::{match_def_path, paths, SpanlessEq};
 use rustc_errors::Applicability;
@@ -38,11 +38,10 @@ fn report_lint(cx: &LateContext<'_>, pop_span: Span, pop_stmt_kind: PopStmt<'_>,
             };
 
             let loop_replacement = format!("while let Some({}) = {}.pop()", pat, snippet(cx, receiver_span, ".."));
-            multispan_sugg_with_applicability(
-                diag,
+            diag.multipart_suggestion(
                 "consider using a `while..let` loop",
+                vec![(loop_span, loop_replacement), (pop_span, pop_replacement)],
                 Applicability::MachineApplicable,
-                [(loop_span, loop_replacement), (pop_span, pop_replacement)],
             );
         },
     );
diff --git a/clippy_lints/src/loops/needless_range_loop.rs b/clippy_lints/src/loops/needless_range_loop.rs
index de7ec81bc01..e18e4374667 100644
--- a/clippy_lints/src/loops/needless_range_loop.rs
+++ b/clippy_lints/src/loops/needless_range_loop.rs
@@ -1,11 +1,12 @@
 use super::NEEDLESS_RANGE_LOOP;
-use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet;
 use clippy_utils::ty::has_iter_method;
 use clippy_utils::visitors::is_local_used;
 use clippy_utils::{contains_name, higher, is_integer_const, sugg, SpanlessEq};
 use rustc_ast::ast;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
+use rustc_errors::Applicability;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::intravisit::{walk_expr, Visitor};
 use rustc_hir::{BinOpKind, BorrowKind, Closure, Expr, ExprKind, HirId, Mutability, Pat, PatKind, QPath};
@@ -145,8 +146,7 @@ pub(super) fn check<'tcx>(
                         arg.span,
                         format!("the loop variable `{}` is used to index `{indexed}`", ident.name),
                         |diag| {
-                            multispan_sugg(
-                                diag,
+                            diag.multipart_suggestion(
                                 "consider using an iterator and enumerate()",
                                 vec![
                                     (pat.span, format!("({}, <item>)", ident.name)),
@@ -155,6 +155,7 @@ pub(super) fn check<'tcx>(
                                         format!("{indexed}.{method}().enumerate(){method_1}{method_2}"),
                                     ),
                                 ],
+                                Applicability::HasPlaceholders,
                             );
                         },
                     );
@@ -171,10 +172,10 @@ pub(super) fn check<'tcx>(
                         arg.span,
                         format!("the loop variable `{}` is only used to index `{indexed}`", ident.name),
                         |diag| {
-                            multispan_sugg(
-                                diag,
+                            diag.multipart_suggestion(
                                 "consider using an iterator",
                                 vec![(pat.span, "<item>".to_string()), (arg.span, repl)],
+                                Applicability::HasPlaceholders,
                             );
                         },
                     );
diff --git a/clippy_lints/src/loops/unused_enumerate_index.rs b/clippy_lints/src/loops/unused_enumerate_index.rs
index 40ccfec02be..51e21aa9734 100644
--- a/clippy_lints/src/loops/unused_enumerate_index.rs
+++ b/clippy_lints/src/loops/unused_enumerate_index.rs
@@ -1,7 +1,8 @@
 use super::UNUSED_ENUMERATE_INDEX;
-use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet;
 use clippy_utils::{pat_is_wild, sugg};
+use rustc_errors::Applicability;
 use rustc_hir::def::DefKind;
 use rustc_hir::{Expr, ExprKind, Pat, PatKind};
 use rustc_lint::LateContext;
@@ -28,13 +29,13 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, pat: &Pat<'tcx>, arg: &Expr<'_
             "you seem to use `.enumerate()` and immediately discard the index",
             |diag| {
                 let base_iter = sugg::Sugg::hir(cx, self_arg, "base iter");
-                multispan_sugg(
-                    diag,
+                diag.multipart_suggestion(
                     "remove the `.enumerate()` call",
                     vec![
                         (pat.span, snippet(cx, elem.span, "..").into_owned()),
                         (arg.span, base_iter.to_string()),
                     ],
+                    Applicability::MachineApplicable,
                 );
             },
         );
diff --git a/clippy_lints/src/manual_strip.rs b/clippy_lints/src/manual_strip.rs
index 686ecccf829..324ad25752a 100644
--- a/clippy_lints/src/manual_strip.rs
+++ b/clippy_lints/src/manual_strip.rs
@@ -1,11 +1,12 @@
 use clippy_config::msrvs::{self, Msrv};
 use clippy_config::Conf;
 use clippy_utils::consts::{constant, Constant};
-use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet;
 use clippy_utils::usage::mutated_variables;
 use clippy_utils::{eq_expr_value, higher, match_def_path, paths};
 use rustc_ast::ast::LitKind;
+use rustc_errors::Applicability;
 use rustc_hir::def::Res;
 use rustc_hir::intravisit::{walk_expr, Visitor};
 use rustc_hir::{BinOpKind, BorrowKind, Expr, ExprKind};
@@ -14,6 +15,7 @@ use rustc_middle::ty;
 use rustc_session::impl_lint_pass;
 use rustc_span::source_map::Spanned;
 use rustc_span::Span;
+use std::iter;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -108,19 +110,19 @@ impl<'tcx> LateLintPass<'tcx> for ManualStrip {
                     format!("stripping a {kind_word} manually"),
                     |diag| {
                         diag.span_note(test_span, format!("the {kind_word} was tested here"));
-                        multispan_sugg(
-                            diag,
+                        diag.multipart_suggestion(
                             format!("try using the `strip_{kind_word}` method"),
-                            vec![(
+                            iter::once((
                                 test_span,
                                 format!(
                                     "if let Some(<stripped>) = {}.strip_{kind_word}({}) ",
                                     snippet(cx, target_arg.span, ".."),
                                     snippet(cx, pattern.span, "..")
                                 ),
-                            )]
-                            .into_iter()
-                            .chain(strippings.into_iter().map(|span| (span, "<stripped>".into()))),
+                            ))
+                            .chain(strippings.into_iter().map(|span| (span, "<stripped>".into())))
+                            .collect(),
+                            Applicability::HasPlaceholders,
                         );
                     },
                 );
@@ -183,9 +185,9 @@ fn peel_ref<'a>(expr: &'a Expr<'_>) -> &'a Expr<'a> {
     }
 }
 
-// Find expressions where `target` is stripped using the length of `pattern`.
-// We'll suggest replacing these expressions with the result of the `strip_{prefix,suffix}`
-// method.
+/// Find expressions where `target` is stripped using the length of `pattern`.
+/// We'll suggest replacing these expressions with the result of the `strip_{prefix,suffix}`
+/// method.
 fn find_stripping<'tcx>(
     cx: &LateContext<'tcx>,
     strip_kind: StripKind,
diff --git a/clippy_lints/src/matches/match_ref_pats.rs b/clippy_lints/src/matches/match_ref_pats.rs
index aba4c85c59e..5445ee1f042 100644
--- a/clippy_lints/src/matches/match_ref_pats.rs
+++ b/clippy_lints/src/matches/match_ref_pats.rs
@@ -1,4 +1,4 @@
-use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::{snippet, walk_span_to_context};
 use clippy_utils::sugg::Sugg;
 use core::iter::once;
@@ -54,7 +54,11 @@ where
 
     span_lint_and_then(cx, MATCH_REF_PATS, expr.span, title, |diag| {
         if !expr.span.from_expansion() {
-            multispan_sugg(diag, msg, first_sugg.chain(remaining_suggs));
+            diag.multipart_suggestion(
+                msg,
+                first_sugg.chain(remaining_suggs).collect(),
+                Applicability::MachineApplicable,
+            );
         }
     });
 }
diff --git a/clippy_lints/src/methods/bind_instead_of_map.rs b/clippy_lints/src/methods/bind_instead_of_map.rs
index 20f3722e173..2a8a5fcc3b6 100644
--- a/clippy_lints/src/methods/bind_instead_of_map.rs
+++ b/clippy_lints/src/methods/bind_instead_of_map.rs
@@ -1,5 +1,5 @@
 use super::{contains_return, BIND_INSTEAD_OF_MAP};
-use clippy_utils::diagnostics::{multispan_sugg_with_applicability, span_lint_and_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then};
 use clippy_utils::peel_blocks;
 use clippy_utils::source::{snippet, snippet_with_context};
 use clippy_utils::visitors::find_all_ret_expressions;
@@ -136,15 +136,16 @@ impl BindInsteadOfMap {
             return false;
         };
         span_lint_and_then(cx, BIND_INSTEAD_OF_MAP, expr.span, msg, |diag| {
-            multispan_sugg_with_applicability(
-                diag,
-                "try",
+            diag.multipart_suggestion(
+                format!("use `{}` instead", self.good_method_name),
+                std::iter::once((span, self.good_method_name.into()))
+                    .chain(
+                        suggs
+                            .into_iter()
+                            .map(|(span1, span2)| (span1, snippet(cx, span2, "_").into())),
+                    )
+                    .collect(),
                 Applicability::MachineApplicable,
-                std::iter::once((span, self.good_method_name.into())).chain(
-                    suggs
-                        .into_iter()
-                        .map(|(span1, span2)| (span1, snippet(cx, span2, "_").into())),
-                ),
             );
         });
         true
diff --git a/clippy_lints/src/methods/unused_enumerate_index.rs b/clippy_lints/src/methods/unused_enumerate_index.rs
index 8b8a965b9f0..3004d9c4233 100644
--- a/clippy_lints/src/methods/unused_enumerate_index.rs
+++ b/clippy_lints/src/methods/unused_enumerate_index.rs
@@ -1,4 +1,4 @@
-use clippy_utils::diagnostics::{multispan_sugg_with_applicability, span_lint_hir_and_then};
+use clippy_utils::diagnostics::span_lint_hir_and_then;
 use clippy_utils::source::{snippet, snippet_opt};
 use clippy_utils::{expr_or_init, is_trait_method, pat_is_wild};
 use rustc_errors::Applicability;
@@ -97,10 +97,8 @@ pub(super) fn check(cx: &LateContext<'_>, call_expr: &Expr<'_>, recv: &Expr<'_>,
             enumerate_span,
             "you seem to use `.enumerate()` and immediately discard the index",
             |diag| {
-                multispan_sugg_with_applicability(
-                    diag,
+                diag.multipart_suggestion(
                     "remove the `.enumerate()` call",
-                    Applicability::MachineApplicable,
                     vec![
                         (closure_param.span, new_closure_param),
                         (
@@ -108,6 +106,7 @@ pub(super) fn check(cx: &LateContext<'_>, call_expr: &Expr<'_>, recv: &Expr<'_>,
                             String::new(),
                         ),
                     ],
+                    Applicability::MachineApplicable,
                 );
             },
         );
diff --git a/clippy_lints/src/needless_pass_by_value.rs b/clippy_lints/src/needless_pass_by_value.rs
index f2e00cef7e9..a0bbf6b14b2 100644
--- a/clippy_lints/src/needless_pass_by_value.rs
+++ b/clippy_lints/src/needless_pass_by_value.rs
@@ -1,4 +1,4 @@
-use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::is_self;
 use clippy_utils::ptr::get_spans;
 use clippy_utils::source::{snippet, snippet_opt};
@@ -278,9 +278,12 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue {
                         }
                     }
 
-                    let spans = vec![(input.span, format!("&{}", snippet(cx, input.span, "_")))];
-
-                    multispan_sugg(diag, "consider taking a reference instead", spans);
+                    diag.span_suggestion(
+                        input.span,
+                        "consider taking a reference instead",
+                        format!("&{}", snippet(cx, input.span, "_")),
+                        Applicability::MaybeIncorrect,
+                    );
                 };
 
                 span_lint_and_then(
diff --git a/clippy_lints/src/operators/op_ref.rs b/clippy_lints/src/operators/op_ref.rs
index c2b27c9b229..82b9d10fbeb 100644
--- a/clippy_lints/src/operators/op_ref.rs
+++ b/clippy_lints/src/operators/op_ref.rs
@@ -1,4 +1,4 @@
-use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::get_enclosing_block;
 use clippy_utils::source::snippet;
 use clippy_utils::ty::{implements_trait, is_copy};
@@ -64,10 +64,10 @@ pub(crate) fn check<'tcx>(
                         |diag| {
                             let lsnip = snippet(cx, l.span, "...").to_string();
                             let rsnip = snippet(cx, r.span, "...").to_string();
-                            multispan_sugg(
-                                diag,
+                            diag.multipart_suggestion(
                                 "use the values directly",
                                 vec![(left.span, lsnip), (right.span, rsnip)],
+                                Applicability::MachineApplicable,
                             );
                         },
                     );
diff --git a/clippy_lints/src/semicolon_block.rs b/clippy_lints/src/semicolon_block.rs
index 7615c21276d..09f1c112352 100644
--- a/clippy_lints/src/semicolon_block.rs
+++ b/clippy_lints/src/semicolon_block.rs
@@ -1,5 +1,5 @@
 use clippy_config::Conf;
-use clippy_utils::diagnostics::{multispan_sugg_with_applicability, span_lint_and_then};
+use clippy_utils::diagnostics::span_lint_and_then;
 use rustc_errors::Applicability;
 use rustc_hir::{Block, Expr, ExprKind, Stmt, StmtKind};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
@@ -92,11 +92,10 @@ impl SemicolonBlock {
             semi_span,
             "consider moving the `;` inside the block for consistent formatting",
             |diag| {
-                multispan_sugg_with_applicability(
-                    diag,
+                diag.multipart_suggestion(
                     "put the `;` here",
+                    vec![(remove_span, String::new()), (insert_span, ";".to_owned())],
                     Applicability::MachineApplicable,
-                    [(remove_span, String::new()), (insert_span, ";".to_owned())],
                 );
             },
         );
@@ -124,11 +123,10 @@ impl SemicolonBlock {
             block.span,
             "consider moving the `;` outside the block for consistent formatting",
             |diag| {
-                multispan_sugg_with_applicability(
-                    diag,
+                diag.multipart_suggestion(
                     "put the `;` here",
+                    vec![(remove_span, String::new()), (insert_span, ";".to_owned())],
                     Applicability::MachineApplicable,
-                    [(remove_span, String::new()), (insert_span, ";".to_owned())],
                 );
             },
         );
diff --git a/clippy_lints/src/utils/internal_lints/metadata_collector.rs b/clippy_lints/src/utils/internal_lints/metadata_collector.rs
index 2fc66c56036..7f9173df005 100644
--- a/clippy_lints/src/utils/internal_lints/metadata_collector.rs
+++ b/clippy_lints/src/utils/internal_lints/metadata_collector.rs
@@ -85,10 +85,6 @@ const SUGGESTION_DIAG_METHODS: [(&str, bool); 9] = [
     ("tool_only_multipart_suggestion", true),
     ("span_suggestions", true),
 ];
-const SUGGESTION_FUNCTIONS: [&[&str]; 2] = [
-    &["clippy_utils", "diagnostics", "multispan_sugg"],
-    &["clippy_utils", "diagnostics", "multispan_sugg_with_applicability"],
-];
 const DEPRECATED_LINT_TYPE: [&str; 3] = ["clippy_lints", "deprecated_lints", "ClippyDeprecatedLint"];
 
 /// The index of the applicability name of `paths::APPLICABILITY_VALUES`
@@ -1060,33 +1056,21 @@ impl<'a, 'hir> Visitor<'hir> for IsMultiSpanScanner<'a, 'hir> {
             return;
         }
 
-        match &expr.kind {
-            ExprKind::Call(fn_expr, _args) => {
-                let found_function = SUGGESTION_FUNCTIONS
-                    .iter()
-                    .any(|func_path| match_function_call(self.cx, fn_expr, func_path).is_some());
-                if found_function {
-                    // These functions are all multi part suggestions
-                    self.add_single_span_suggestion();
-                }
-            },
-            ExprKind::MethodCall(path, recv, _, _arg_span) => {
-                let (self_ty, _) = walk_ptrs_ty_depth(self.cx.typeck_results().expr_ty(recv));
-                if match_type(self.cx, self_ty, &paths::DIAG) {
-                    let called_method = path.ident.name.as_str().to_string();
-                    for (method_name, is_multi_part) in &SUGGESTION_DIAG_METHODS {
-                        if *method_name == called_method {
-                            if *is_multi_part {
-                                self.add_multi_part_suggestion();
-                            } else {
-                                self.add_single_span_suggestion();
-                            }
-                            break;
+        if let ExprKind::MethodCall(path, recv, _, _arg_span) = &expr.kind {
+            let (self_ty, _) = walk_ptrs_ty_depth(self.cx.typeck_results().expr_ty(recv));
+            if match_type(self.cx, self_ty, &paths::DIAG) {
+                let called_method = path.ident.name.as_str().to_string();
+                for (method_name, is_multi_part) in &SUGGESTION_DIAG_METHODS {
+                    if *method_name == called_method {
+                        if *is_multi_part {
+                            self.add_multi_part_suggestion();
+                        } else {
+                            self.add_single_span_suggestion();
                         }
+                        break;
                     }
                 }
-            },
-            _ => {},
+            }
         }
 
         intravisit::walk_expr(self, expr);