diff options
Diffstat (limited to 'compiler/rustc_resolve/src/diagnostics.rs')
| -rw-r--r-- | compiler/rustc_resolve/src/diagnostics.rs | 137 |
1 files changed, 82 insertions, 55 deletions
diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs index 2cfde2f62d8..cd1a9b934cf 100644 --- a/compiler/rustc_resolve/src/diagnostics.rs +++ b/compiler/rustc_resolve/src/diagnostics.rs @@ -5,10 +5,8 @@ use rustc_ast::{self as ast, Crate, ItemKind, ModKind, NodeId, Path, CRATE_NODE_ use rustc_ast::{MetaItemKind, NestedMetaItem}; use rustc_ast_pretty::pprust; use rustc_data_structures::fx::FxHashSet; -use rustc_errors::{ - pluralize, Applicability, Diagnostic, DiagnosticBuilder, ErrorGuaranteed, MultiSpan, -}; -use rustc_errors::{struct_span_err, SuggestionStyle}; +use rustc_errors::{pluralize, report_ambiguity_error, struct_span_err, SuggestionStyle}; +use rustc_errors::{Applicability, Diagnostic, DiagnosticBuilder, ErrorGuaranteed, MultiSpan}; use rustc_feature::BUILTIN_ATTRIBUTES; use rustc_hir::def::Namespace::{self, *}; use rustc_hir::def::{self, CtorKind, CtorOf, DefKind, NonMacroAttrKind, PerNS}; @@ -17,8 +15,9 @@ use rustc_hir::PrimTy; use rustc_middle::bug; use rustc_middle::ty::TyCtxt; use rustc_session::lint::builtin::ABSOLUTE_PATHS_NOT_STARTING_WITH_CRATE; +use rustc_session::lint::builtin::AMBIGUOUS_GLOB_IMPORTS; use rustc_session::lint::builtin::MACRO_EXPANDED_MACRO_EXPORTS_ACCESSED_BY_ABSOLUTE_PATHS; -use rustc_session::lint::BuiltinLintDiagnostics; +use rustc_session::lint::{AmbiguityErrorDiag, BuiltinLintDiagnostics}; use rustc_session::Session; use rustc_span::edit_distance::find_best_match_for_name; use rustc_span::edition::Edition; @@ -135,7 +134,23 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } for ambiguity_error in &self.ambiguity_errors { - self.report_ambiguity_error(ambiguity_error); + let diag = self.ambiguity_diagnostics(ambiguity_error); + if ambiguity_error.warning { + let NameBindingKind::Import { import, .. } = ambiguity_error.b1.0.kind else { + unreachable!() + }; + self.lint_buffer.buffer_lint_with_diagnostic( + AMBIGUOUS_GLOB_IMPORTS, + import.root_id, + ambiguity_error.ident.span, + diag.msg.to_string(), + BuiltinLintDiagnostics::AmbiguousGlobImports { diag }, + ); + } else { + let mut err = struct_span_err!(self.tcx.sess, diag.span, E0659, "{}", &diag.msg); + report_ambiguity_error(&mut err, diag); + err.emit(); + } } let mut reported_spans = FxHashSet::default(); @@ -228,7 +243,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { (TypeNS, _) => "type", }; - let msg = format!("the name `{}` is defined multiple times", name); + let msg = format!("the name `{name}` is defined multiple times"); let mut err = match (old_binding.is_extern_crate(), new_binding.is_extern_crate()) { (true, true) => struct_span_err!(self.tcx.sess, span, E0259, "{}", msg), @@ -250,11 +265,11 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { container )); - err.span_label(span, format!("`{}` re{} here", name, new_participle)); + err.span_label(span, format!("`{name}` re{new_participle} here")); if !old_binding.span.is_dummy() && old_binding.span != span { err.span_label( self.tcx.sess.source_map().guess_head_span(old_binding.span), - format!("previous {} of the {} `{}` here", old_noun, old_kind, name), + format!("previous {old_noun} of the {old_kind} `{name}` here"), ); } @@ -343,15 +358,15 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { binding_span: Span, ) { let suggested_name = if name.as_str().chars().next().unwrap().is_uppercase() { - format!("Other{}", name) + format!("Other{name}") } else { - format!("other_{}", name) + format!("other_{name}") }; let mut suggestion = None; match import.kind { ImportKind::Single { type_ns_only: true, .. } => { - suggestion = Some(format!("self as {}", suggested_name)) + suggestion = Some(format!("self as {suggested_name}")) } ImportKind::Single { source, .. } => { if let Some(pos) = @@ -587,11 +602,11 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { let sugg_msg = "try using a local generic parameter instead"; let name = self.tcx.item_name(def_id); let (span, snippet) = if span.is_empty() { - let snippet = format!("<{}>", name); + let snippet = format!("<{name}>"); (span, snippet) } else { let span = sm.span_through_char(span, '<').shrink_to_hi(); - let snippet = format!("{}, ", name); + let snippet = format!("{name}, "); (span, snippet) }; // Suggest the modification to the user @@ -652,7 +667,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { name, ); for sp in target_sp { - err.span_label(sp, format!("pattern doesn't bind `{}`", name)); + err.span_label(sp, format!("pattern doesn't bind `{name}`")); } for sp in origin_sp { err.span_label(sp, "variable not in all patterns"); @@ -679,8 +694,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { if import_suggestions.is_empty() { let help_msg = format!( "if you meant to match on a variant or a `const` item, consider \ - making the path in the pattern qualified: `path::to::ModOrType::{}`", - name, + making the path in the pattern qualified: `path::to::ModOrType::{name}`", ); err.span_help(span, help_msg); } @@ -938,8 +952,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { let mut err = self.tcx.sess.struct_span_err_with_code( span, format!( - "item `{}` is an associated {}, which doesn't match its trait `{}`", - name, kind, trait_path, + "item `{name}` is an associated {kind}, which doesn't match its trait `{trait_path}`", ), code, ); @@ -1395,7 +1408,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { let head_span = source_map.guess_head_span(span); err.subdiagnostic(ConsiderAddingADerive { span: head_span.shrink_to_lo(), - suggestion: format!("#[derive(Default)]\n") + suggestion: "#[derive(Default)]\n".to_string(), }); } for ns in [Namespace::MacroNS, Namespace::TypeNS, Namespace::ValueNS] { @@ -1412,10 +1425,10 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { "a function-like macro".to_string() } Res::Def(DefKind::Macro(MacroKind::Attr), _) | Res::NonMacroAttr(..) => { - format!("an attribute: `#[{}]`", ident) + format!("an attribute: `#[{ident}]`") } Res::Def(DefKind::Macro(MacroKind::Derive), _) => { - format!("a derive macro: `#[derive({})]`", ident) + format!("a derive macro: `#[derive({ident})]`") } Res::ToolMod => { // Don't confuse the user with tool modules. @@ -1436,7 +1449,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { if !import.span.is_dummy() { err.span_note( import.span, - format!("`{}` is imported here, but it is {}", ident, desc), + format!("`{ident}` is imported here, but it is {desc}"), ); // Silence the 'unused import' warning we might get, // since this diagnostic already covers that import. @@ -1444,7 +1457,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { return; } } - err.note(format!("`{}` is in scope, but it is {}", ident, desc)); + err.note(format!("`{ident}` is in scope, but it is {desc}")); return; } } @@ -1540,20 +1553,15 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } } - fn report_ambiguity_error(&self, ambiguity_error: &AmbiguityError<'_>) { - let AmbiguityError { kind, ident, b1, b2, misc1, misc2 } = *ambiguity_error; + fn ambiguity_diagnostics(&self, ambiguity_error: &AmbiguityError<'_>) -> AmbiguityErrorDiag { + let AmbiguityError { kind, ident, b1, b2, misc1, misc2, .. } = *ambiguity_error; let (b1, b2, misc1, misc2, swapped) = if b2.span.is_dummy() && !b1.span.is_dummy() { // We have to print the span-less alternative first, otherwise formatting looks bad. (b2, b1, misc2, misc1, true) } else { (b1, b2, misc1, misc2, false) }; - - let mut err = struct_span_err!(self.tcx.sess, ident.span, E0659, "`{ident}` is ambiguous"); - err.span_label(ident.span, "ambiguous name"); - err.note(format!("ambiguous because of {}", kind.descr())); - - let mut could_refer_to = |b: NameBinding<'_>, misc: AmbiguityErrorMisc, also: &str| { + let could_refer_to = |b: NameBinding<'_>, misc: AmbiguityErrorMisc, also: &str| { let what = self.binding_description(b, ident, misc == AmbiguityErrorMisc::FromPrelude); let note_msg = format!("`{ident}` could{also} refer to {what}"); @@ -1579,16 +1587,35 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { AmbiguityErrorMisc::FromPrelude | AmbiguityErrorMisc::None => {} } - err.span_note(b.span, note_msg); - for (i, help_msg) in help_msgs.iter().enumerate() { - let or = if i == 0 { "" } else { "or " }; - err.help(format!("{}{}", or, help_msg)); - } + ( + b.span, + note_msg, + help_msgs + .iter() + .enumerate() + .map(|(i, help_msg)| { + let or = if i == 0 { "" } else { "or " }; + format!("{or}{help_msg}") + }) + .collect::<Vec<_>>(), + ) }; - - could_refer_to(b1, misc1, ""); - could_refer_to(b2, misc2, " also"); - err.emit(); + let (b1_span, b1_note_msg, b1_help_msgs) = could_refer_to(b1, misc1, ""); + let (b2_span, b2_note_msg, b2_help_msgs) = could_refer_to(b2, misc2, " also"); + + AmbiguityErrorDiag { + msg: format!("`{ident}` is ambiguous"), + span: ident.span, + label_span: ident.span, + label_msg: "ambiguous name".to_string(), + note_msg: format!("ambiguous because of {}", kind.descr()), + b1_span, + b1_note_msg, + b1_help_msgs, + b2_span, + b2_note_msg, + b2_help_msgs, + } } /// If the binding refers to a tuple struct constructor with fields, @@ -1626,7 +1653,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { let descr = get_descr(binding); let mut err = struct_span_err!(self.tcx.sess, ident.span, E0603, "{} `{}` is private", descr, ident); - err.span_label(ident.span, format!("private {}", descr)); + err.span_label(ident.span, format!("private {descr}")); if let Some((this_res, outer_ident)) = outermost_res { let import_suggestions = self.lookup_import_candidates( @@ -1718,7 +1745,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { if next_binding.is_none() && let Some(span) = non_exhaustive { note_span.push_span_label( span, - format!("cannot be constructed because it is `#[non_exhaustive]`"), + "cannot be constructed because it is `#[non_exhaustive]`", ); } err.span_note(note_span, msg); @@ -1811,7 +1838,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { _ => format!("`{parent}`"), }; - let mut msg = format!("could not find `{}` in {}", ident, parent); + let mut msg = format!("could not find `{ident}` in {parent}"); if ns == TypeNS || ns == ValueNS { let ns_to_try = if ns == TypeNS { ValueNS } else { TypeNS }; let binding = if let Some(module) = module { @@ -1926,12 +1953,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { let suggestion = match_span.map(|span| { ( vec![(span, String::from(""))], - format!("`{}` is defined here, but is not a type", ident), + format!("`{ident}` is defined here, but is not a type"), Applicability::MaybeIncorrect, ) }); - (format!("use of undeclared type `{}`", ident), suggestion) + (format!("use of undeclared type `{ident}`"), suggestion) } else { let mut suggestion = None; if ident.name == sym::alloc { @@ -1953,7 +1980,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { }, ) }); - (format!("use of undeclared crate or module `{}`", ident), suggestion) + (format!("use of undeclared crate or module `{ident}`"), suggestion) } } @@ -2137,16 +2164,16 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { let module_name = crate_module.kind.name().unwrap(); let import_snippet = match import.kind { ImportKind::Single { source, target, .. } if source != target => { - format!("{} as {}", source, target) + format!("{source} as {target}") } - _ => format!("{}", ident), + _ => format!("{ident}"), }; let mut corrections: Vec<(Span, String)> = Vec::new(); if !import.is_nested() { // Assume this is the easy case of `use issue_59764::foo::makro;` and just remove // intermediate segments. - corrections.push((import.span, format!("{}::{}", module_name, import_snippet))); + corrections.push((import.span, format!("{module_name}::{import_snippet}"))); } else { // Find the binding span (and any trailing commas and spaces). // ie. `use a::b::{c, d, e};` @@ -2213,11 +2240,11 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { start_point, if has_nested { // In this case, `start_snippet` must equal '{'. - format!("{}{}, ", start_snippet, import_snippet) + format!("{start_snippet}{import_snippet}, ") } else { // In this case, add a `{`, then the moved import, then whatever // was there before. - format!("{{{}, {}", import_snippet, start_snippet) + format!("{{{import_snippet}, {start_snippet}") }, )); @@ -2634,9 +2661,9 @@ fn show_candidates( "item" }; let plural_descr = - if descr.ends_with('s') { format!("{}es", descr) } else { format!("{}s", descr) }; + if descr.ends_with('s') { format!("{descr}es") } else { format!("{descr}s") }; - let mut msg = format!("{}these {} exist but are inaccessible", prefix, plural_descr); + let mut msg = format!("{prefix}these {plural_descr} exist but are inaccessible"); let mut has_colon = false; let mut spans = Vec::new(); @@ -2657,7 +2684,7 @@ fn show_candidates( let mut multi_span = MultiSpan::from_spans(spans.iter().map(|(_, sp)| *sp).collect()); for (name, span) in spans { - multi_span.push_span_label(span, format!("`{}`: not accessible", name)); + multi_span.push_span_label(span, format!("`{name}`: not accessible")); } for note in inaccessible_path_strings.iter().flat_map(|cand| cand.3.as_ref()) { |