Migrate compiler/rustc_hir_typeck/src/callee.rs to translatable diagnostics

compiler/rustc_hir_typeck/messages.ftl

@@ -33,6 +33,10 @@ hir_typeck_expected_default_return_type = expected `()` because of default retur
 
 hir_typeck_expected_return_type = expected `{$expected}` because of return type
 
+hir_typeck_explicit_destructor = explicit use of destructor method
+    .label = explicit destructor calls not allowed
+    .suggestion = consider using `drop` function
+
 hir_typeck_field_multiply_specified_in_initializer =
     field `{$ident}` specified more than once
     .label = used more than once
@@ -52,8 +56,10 @@ hir_typeck_functional_record_update_on_non_struct =
 
 hir_typeck_help_set_edition_cargo = set `edition = "{$edition}"` in `Cargo.toml`
 hir_typeck_help_set_edition_standalone = pass `--edition {$edition}` to `rustc`
-hir_typeck_lang_start_expected_sig_note = the `start` lang item should have the signature `fn(fn() -> T, isize, *const *const u8, u8) -> isize`
 
+hir_typeck_invalid_callee = expected function, found {$ty}
+
+hir_typeck_lang_start_expected_sig_note = the `start` lang item should have the signature `fn(fn() -> T, isize, *const *const u8, u8) -> isize`
 hir_typeck_lang_start_incorrect_number_params = incorrect number of parameters for the `start` lang item
 hir_typeck_lang_start_incorrect_number_params_note_expected_count = the `start` lang item should have four parameters, but found {$found_param_count}
 
@@ -66,6 +72,9 @@ hir_typeck_lang_start_incorrect_ret_ty = the return type of the `start` lang ite
 hir_typeck_method_call_on_unknown_raw_pointee =
     cannot call a method on a raw pointer with an unknown pointee type
 
+hir_typeck_missing_fn_lang_items = failed to find an overloaded call trait for closure call
+    .help = make sure the `fn`/`fn_mut`/`fn_once` lang items are defined and have correctly defined `call`/`call_mut`/`call_once` methods
+
 hir_typeck_missing_parentheses_in_range = can't call method `{$method_name}` on type `{$ty_str}`
 
 hir_typeck_no_associated_item = no {$item_kind} named `{$item_name}` found for {$ty_prefix} `{$ty_str}`{$trait_missing_method ->
@@ -86,6 +95,9 @@ hir_typeck_return_stmt_outside_of_fn_body =
     .encl_body_label = the {$statement_kind} is part of this body...
     .encl_fn_label = ...not the enclosing function body
 
+hir_typeck_rustcall_incorrect_args =
+    functions with the "rust-call" ABI must take a single non-self tuple argument
+
 hir_typeck_struct_expr_non_exhaustive =
     cannot create non-exhaustive {$what} using struct expression
 

compiler/rustc_hir_typeck/src/callee.rs

@@ -2,9 +2,9 @@ use super::method::probe::ProbeScope;
 use super::method::MethodCallee;
 use super::{Expectation, FnCtxt, TupleArgumentsFlag};
 
-use crate::type_error_struct;
+use crate::errors;
 use rustc_ast::util::parser::PREC_POSTFIX;
-use rustc_errors::{struct_span_err, Applicability, Diagnostic, ErrorGuaranteed, StashKey};
+use rustc_errors::{Applicability, Diagnostic, ErrorGuaranteed, StashKey};
 use rustc_hir as hir;
 use rustc_hir::def::{self, CtorKind, DefKind, Namespace, Res};
 use rustc_hir::def_id::DefId;
@@ -44,23 +44,15 @@ pub fn check_legal_trait_for_method_call(
     trait_id: DefId,
 ) {
     if tcx.lang_items().drop_trait() == Some(trait_id) {
-        let mut err = struct_span_err!(tcx.sess, span, E0040, "explicit use of destructor method");
-        err.span_label(span, "explicit destructor calls not allowed");
-
-        let (sp, suggestion) = receiver
-            .and_then(|s| tcx.sess.source_map().span_to_snippet(s).ok())
-            .filter(|snippet| !snippet.is_empty())
-            .map(|snippet| (expr_span, format!("drop({snippet})")))
-            .unwrap_or_else(|| (span, "drop".to_string()));
-
-        err.span_suggestion(
-            sp,
-            "consider using `drop` function",
-            suggestion,
-            Applicability::MaybeIncorrect,
-        );
-
-        err.emit();
+        let sugg = if let Some(receiver) = receiver.filter(|s| !s.is_empty()) {
+            errors::ExplicitDestructorCallSugg::Snippet {
+                lo: expr_span.shrink_to_lo(),
+                hi: receiver.shrink_to_hi().to(expr_span.shrink_to_hi()),
+            }
+        } else {
+            errors::ExplicitDestructorCallSugg::Empty(span)
+        };
+        tcx.sess.emit_err(errors::ExplicitDestructorCall { span, sugg });
     }
 }
 
@@ -387,6 +379,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 // Unit testing: function items annotated with
                 // `#[rustc_evaluate_where_clauses]` trigger special output
                 // to let us test the trait evaluation system.
+                // Untranslatable diagnostics are okay for rustc internals
+                #[allow(rustc::untranslatable_diagnostic)]
+                #[allow(rustc::diagnostic_outside_of_impl)]
                 if self.tcx.has_attr(def_id, sym::rustc_evaluate_where_clauses) {
                     let predicates = self.tcx.predicates_of(def_id);
                     let predicates = predicates.instantiate(self.tcx, args);
@@ -478,10 +473,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 );
                 self.require_type_is_sized(ty, sp, traits::RustCall);
             } else {
-                self.tcx.sess.span_err(
-                        sp,
-                        "functions with the \"rust-call\" ABI must take a single non-self tuple argument",
-                    );
+                self.tcx.sess.emit_err(errors::RustCallIncorrectArgs { span: sp });
             }
         }
 
@@ -610,17 +602,16 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         }
 
         let callee_ty = self.resolve_vars_if_possible(callee_ty);
-        let mut err = type_error_struct!(
-            self.tcx.sess,
-            callee_expr.span,
-            callee_ty,
-            E0618,
-            "expected function, found {}",
-            match &unit_variant {
+        let mut err = self.tcx.sess.create_err(errors::InvalidCallee {
+            span: callee_expr.span,
+            ty: match &unit_variant {
                 Some((_, kind, path)) => format!("{kind} `{path}`"),
                 None => format!("`{callee_ty}`"),
-            }
-        );
+            },
+        });
+        if callee_ty.references_error() {
+            err.downgrade_to_delayed_bug();
+        }
 
         self.identify_bad_closure_def_and_call(
             &mut err,
@@ -891,15 +882,7 @@ impl<'a, 'tcx> DeferredCallResolution<'tcx> {
             None => {
                 // This can happen if `#![no_core]` is used and the `fn/fn_mut/fn_once`
                 // lang items are not defined (issue #86238).
-                let mut err = fcx.inh.tcx.sess.struct_span_err(
-                    self.call_expr.span,
-                    "failed to find an overloaded call trait for closure call",
-                );
-                err.help(
-                    "make sure the `fn`/`fn_mut`/`fn_once` lang items are defined \
-                     and have correctly defined `call`/`call_mut`/`call_once` methods",
-                );
-                err.emit();
+                fcx.inh.tcx.sess.emit_err(errors::MissingFnLangItems { span: self.call_expr.span });
             }
         }
     }

compiler/rustc_hir_typeck/src/errors.rs

@@ -54,6 +54,13 @@ impl IntoDiagnosticArg for ReturnLikeStatementKind {
     }
 }
 
+#[derive(Diagnostic)]
+#[diag(hir_typeck_rustcall_incorrect_args)]
+pub struct RustCallIncorrectArgs {
+    #[primary_span]
+    pub span: Span,
+}
+
 #[derive(Diagnostic)]
 #[diag(hir_typeck_yield_expr_outside_of_generator, code = "E0627")]
 pub struct YieldExprOutsideOfGenerator {
@@ -76,6 +83,14 @@ pub struct MethodCallOnUnknownRawPointee {
     pub span: Span,
 }
 
+#[derive(Diagnostic)]
+#[diag(hir_typeck_missing_fn_lang_items)]
+#[help]
+pub struct MissingFnLangItems {
+    #[primary_span]
+    pub span: Span,
+}
+
 #[derive(Diagnostic)]
 #[diag(hir_typeck_functional_record_update_on_non_struct, code = "E0436")]
 pub struct FunctionalRecordUpdateOnNonStruct {
@@ -129,6 +144,29 @@ pub enum ExpectedReturnTypeLabel<'tcx> {
     },
 }
 
+#[derive(Diagnostic)]
+#[diag(hir_typeck_explicit_destructor, code = "E0040")]
+pub struct ExplicitDestructorCall {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+    #[subdiagnostic]
+    pub sugg: ExplicitDestructorCallSugg,
+}
+
+#[derive(Subdiagnostic)]
+pub enum ExplicitDestructorCallSugg {
+    #[suggestion(hir_typeck_suggestion, code = "drop", applicability = "maybe-incorrect")]
+    Empty(#[primary_span] Span),
+    #[multipart_suggestion(hir_typeck_suggestion, style = "short")]
+    Snippet {
+        #[suggestion_part(code = "drop(")]
+        lo: Span,
+        #[suggestion_part(code = ")")]
+        hi: Span,
+    },
+}
+
 #[derive(Diagnostic)]
 #[diag(hir_typeck_missing_parentheses_in_range, code = "E0689")]
 pub struct MissingParenthesesInRange {
@@ -252,6 +290,14 @@ impl HelpUseLatestEdition {
     }
 }
 
+#[derive(Diagnostic)]
+#[diag(hir_typeck_invalid_callee, code = "E0618")]
+pub struct InvalidCallee {
+    #[primary_span]
+    pub span: Span,
+    pub ty: String,
+}
+
 #[derive(Subdiagnostic)]
 pub enum OptionResultRefMismatch {
     #[suggestion(

tests/ui/error-codes/E0040.stderr

@@ -2,10 +2,12 @@ error[E0040]: explicit use of destructor method
   --> $DIR/E0040.rs:16:7
    |
 LL |     x.drop();
-   |     --^^^^--
-   |     | |
-   |     | explicit destructor calls not allowed
-   |     help: consider using `drop` function: `drop(x)`
+   |       ^^^^ explicit destructor calls not allowed
+   |
+help: consider using `drop` function
+   |
+LL |     drop(x);
+   |     +++++ ~
 
 error: aborting due to previous error
 

tests/ui/explicit/explicit-call-to-dtor.stderr

@@ -2,10 +2,12 @@ error[E0040]: explicit use of destructor method
   --> $DIR/explicit-call-to-dtor.rs:15:7
    |
 LL |     x.drop();
-   |     --^^^^--
-   |     | |
-   |     | explicit destructor calls not allowed
-   |     help: consider using `drop` function: `drop(x)`
+   |       ^^^^ explicit destructor calls not allowed
+   |
+help: consider using `drop` function
+   |
+LL |     drop(x);
+   |     +++++ ~
 
 error: aborting due to previous error
 

tests/ui/explicit/explicit-call-to-supertrait-dtor.stderr

@@ -2,10 +2,12 @@ error[E0040]: explicit use of destructor method
   --> $DIR/explicit-call-to-supertrait-dtor.rs:22:14
    |
 LL |         self.drop();
-   |         -----^^^^--
-   |         |    |
-   |         |    explicit destructor calls not allowed
-   |         help: consider using `drop` function: `drop(self)`
+   |              ^^^^ explicit destructor calls not allowed
+   |
+help: consider using `drop` function
+   |
+LL |         drop(self);
+   |         +++++    ~
 
 error: aborting due to previous error