Rollup merge of #123896 - JeanCASPAR:rustc_resolve-to-session-diagnostic, r=jieyouxu

Migrate some diagnostics in `rustc_resolve` to session diagnostic

Hello, I migrated some diagnostics in `rustc_resolve` to session diagnostic.

r? ``@davidtwco``
This commit is contained in:
许杰友 Jieyou Xu (Joe) 2024-04-15 16:56:15 +01:00 committed by GitHub
commit 18e6bb2851
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GPG Key ID: B5690EEEBB952194
6 changed files with 794 additions and 277 deletions

View File

@ -11,6 +11,8 @@ resolve_added_macro_use =
resolve_ancestor_only =
visibilities can only be restricted to ancestor modules
resolve_arguments_macro_use_not_allowed = arguments to `macro_use` are not allowed here
resolve_associated_const_with_similar_name_exists =
there is an associated constant with a similar name
@ -20,6 +22,10 @@ resolve_associated_fn_with_similar_name_exists =
resolve_associated_type_with_similar_name_exists =
there is an associated type with a similar name
resolve_attempt_to_define_builtin_macro_twice =
attempted to define built-in macro more than once
.note = previously defined here
resolve_attempt_to_use_non_constant_value_in_constant =
attempt to use a non-constant value in a constant
@ -32,6 +38,11 @@ resolve_attempt_to_use_non_constant_value_in_constant_with_suggestion =
resolve_attempt_to_use_non_constant_value_in_constant_without_suggestion =
this would need to be a `{$suggestion}`
resolve_attributes_starting_with_rustc_are_reserved =
attributes starting with `rustc` are reserved for use by the `rustc` compiler
resolve_bad_macro_import = bad macro import
resolve_binding_in_never_pattern =
never patterns cannot contain variable bindings
.suggestion = use a wildcard `_` instead
@ -62,12 +73,19 @@ resolve_cannot_determine_macro_resolution =
cannot determine resolution for the {$kind} `{$path}`
.note = import resolution is stuck, try simplifying macro imports
resolve_cannot_find_builtin_macro_with_name =
cannot find a built-in macro with name `{$ident}`
resolve_cannot_find_ident_in_this_scope =
cannot find {$expected} `{$ident}` in this scope
resolve_cannot_glob_import_possible_crates =
cannot glob-import all possible crates
resolve_cannot_use_through_an_import =
cannot use {$article} {$descr} through an import
.note = the {$descr} imported here
resolve_change_import_binding =
you can use `as` to change the binding name of the import
@ -80,6 +98,12 @@ resolve_consider_adding_macro_export =
resolve_consider_declaring_with_pub =
consider declaring type or module `{$ident}` with `pub`
resolve_consider_making_the_field_public =
{ $number_of_fields ->
[one] consider making the field publicly accessible
*[other] consider making the fields publicly accessible
}
resolve_consider_marking_as_pub =
consider marking `{$ident}` as `pub` in the imported module
@ -100,17 +124,44 @@ resolve_const_param_in_non_trivial_anon_const =
resolve_const_param_in_ty_of_const_param =
const parameters may not be used in the type of const parameters
resolve_expected_found =
resolve_constructor_private_if_any_field_private =
a constructor is private if any of the fields is private
resolve_elided_anonymous_lifetime_report_error =
`&` without an explicit lifetime name cannot be used here
.label = explicit lifetime name needed here
resolve_elided_anonymous_lifetime_report_error_suggestion =
consider introducing a higher-ranked lifetime here
resolve_expected_module_found =
expected module, found {$res} `{$path_str}`
.label = not a module
resolve_explicit_anonymous_lifetime_report_error =
`'_` cannot be used here
.label = `'_` is a reserved lifetime name
resolve_explicit_unsafe_traits =
unsafe traits like `{$ident}` should be implemented explicitly
resolve_extern_crate_loading_macro_not_at_crate_root =
an `extern crate` loading macros must be at the crate root
resolve_extern_crate_self_requires_renaming =
`extern crate self;` requires renaming
.suggestion = rename the `self` crate to be able to import it
resolve_forward_declared_generic_param =
generic parameters with a default cannot use forward declared identifiers
.label = defaulted generic parameters cannot be forward declared
resolve_found_an_item_configured_out =
found an item that was configured out
resolve_generic_arguments_in_macro_path =
generic arguments in macro path
resolve_generic_params_from_outer_item =
can't use {$is_self ->
[true] `Self`
@ -135,7 +186,6 @@ resolve_generic_params_from_outer_item_static = a `static` is a separate item fr
resolve_generic_params_from_outer_item_ty_param = type parameter from outer item
resolve_ident_bound_more_than_once_in_parameter_list =
identifier `{$identifier}` is bound more than once in this parameter list
.label = used as parameter more than once
@ -144,8 +194,18 @@ resolve_ident_bound_more_than_once_in_same_pattern =
identifier `{$identifier}` is bound more than once in the same pattern
.label = used in a pattern more than once
resolve_ident_imported_here_but_it_is_desc =
`{$imported_ident}` is imported here, but it is {$imported_ident_desc}
resolve_ident_in_scope_but_it_is_desc =
`{$imported_ident}` is in scope, but it is {$imported_ident_desc}
resolve_implicit_elided_lifetimes_not_allowed_here = implicit elided lifetime not allowed here
resolve_imported_crate = `$crate` may not be imported
resolve_imported_macro_not_found = imported macro not found
resolve_imports_cannot_refer_to =
imports cannot refer to {$what}
@ -161,6 +221,13 @@ resolve_is_not_directly_importable =
`{$target}` is not directly importable
.label = cannot be imported directly
resolve_is_private =
{$ident_descr} `{$ident}` is private
.label = private {$ident_descr}
resolve_item_was_behind_feature =
the item is gated behind the `{$feature}` feature
resolve_items_in_traits_are_not_importable =
items in traits are not importable
@ -183,11 +250,23 @@ resolve_lowercase_self =
resolve_macro_defined_later =
a macro with the same name exists, but it appears later at here
resolve_macro_expanded_extern_crate_cannot_shadow_extern_arguments =
macro-expanded `extern crate` items cannot shadow names passed with `--extern`
resolve_macro_expected_found =
expected {$expected}, found {$found} `{$macro_path}`
.label = not {$article} {$expected}
resolve_macro_extern_deprecated =
`#[macro_escape]` is a deprecated synonym for `#[macro_use]`
.help = try an outer attribute: `#[macro_use]`
resolve_macro_use_extern_crate_self = `#[macro_use]` is not supported on `extern crate self`
resolve_macro_use_name_already_in_use =
`{$name}` is already in scope
.note = macro-expanded `#[macro_use]`s may not shadow existing macros (see RFC 1560)
resolve_method_not_member_of_trait =
method `{$method}` is not a member of trait `{$trait_}`
.label = not a member of trait `{$trait_}`
@ -197,11 +276,45 @@ resolve_missing_macro_rules_name = maybe you have forgotten to define a name for
resolve_module_only =
visibility must resolve to a module
resolve_name_defined_multiple_time =
the name `{$name}` is defined multiple times
.note = `{$name}` must be defined only once in the {$descr} namespace of this {$container}
resolve_name_defined_multiple_time_old_binding_definition =
previous definition of the {$old_kind} `{$name}` here
resolve_name_defined_multiple_time_old_binding_import =
previous import of the {$old_kind} `{$name}` here
resolve_name_defined_multiple_time_redefined =
`{$name}` redefined here
resolve_name_defined_multiple_time_reimported =
`{$name}` reimported here
resolve_name_is_already_used_as_generic_parameter =
the name `{$name}` is already used for a generic parameter in this item's generic parameters
.label = already used
.first_use_of_name = first use of `{$name}`
resolve_name_reserved_in_attribute_namespace =
name `{$ident}` is reserved in attribute namespace
resolve_note_and_refers_to_the_item_defined_here =
{$first ->
[true] {$dots ->
[true] the {$binding_descr} `{$binding_name}` is defined here...
*[false] the {$binding_descr} `{$binding_name}` is defined here
}
*[false] {$dots ->
[true] ...and refers to the {$binding_descr} `{$binding_name}` which is defined here...
*[false] ...and refers to the {$binding_descr} `{$binding_name}` which is defined here
}
}
resolve_outer_ident_is_not_publicly_reexported =
{$outer_ident_descr} `{$outer_ident}` is not publicly re-exported
resolve_param_in_enum_discriminant =
generic parameters may not be used in enum discriminant values
.label = cannot perform const operation using `{$name}`
@ -217,6 +330,8 @@ resolve_param_in_ty_of_const_param =
the type of const parameters must not depend on other generic parameters
.label = the type must not depend on the parameter `{$name}`
resolve_pattern_doesnt_bind_name = pattern doesn't bind `{$name}`
resolve_proc_macro_same_crate = can't use a procedural macro from the same crate that defines it
.help = you can define integration tests in a directory named `tests`
@ -233,6 +348,8 @@ resolve_relative_2018 =
resolve_remove_surrounding_derive =
remove from the surrounding `derive()`
resolve_remove_unnecessary_import = remove unnecessary import
resolve_self_import_can_only_appear_once_in_the_list =
`self` import can only appear once in an import list
.label = can only appear once in an import list
@ -254,16 +371,43 @@ resolve_self_in_generic_param_default =
generic parameters cannot use `Self` in their defaults
.label = `Self` in generic parameter default
resolve_similarly_named_defined_here =
similarly named {$candidate_descr} `{$candidate}` defined here
resolve_single_item_defined_here =
{$candidate_descr} `{$candidate}` defined here
resolve_static_lifetime_is_reserved = invalid lifetime parameter name: `{$lifetime}`
.label = 'static is a reserved lifetime name
resolve_suggestion_import_ident_directly =
import `{$ident}` directly
resolve_suggestion_import_ident_through_reexport =
import `{$ident}` through the re-export
resolve_tool_module_imported =
cannot use a tool module through an import
.note = the tool module imported here
resolve_tool_only_accepts_identifiers =
`{$tool}` only accepts identifiers
.label = not an identifier
resolve_tool_was_already_registered =
tool `{$tool}` was already registered
.label = already registered here
resolve_trait_impl_duplicate =
duplicate definitions with name `{$name}`:
.label = duplicate definition
.old_span_label = previous definition here
.trait_item_span = item in trait
resolve_trait_impl_mismatch =
item `{$name}` is an associated {$kind}, which doesn't match its trait `{$trait_path}`
.label = does not match trait
.trait_impl_mismatch_label_item = item in trait
resolve_try_using_similarly_named_label =
try using similarly named label
@ -284,12 +428,18 @@ resolve_undeclared_label =
use of undeclared label `{$name}`
.label = undeclared label `{$name}`
resolve_underscore_lifetime_is_reserved = `'_` cannot be used here
.label = `'_` is a reserved lifetime name
resolve_unexpected_res_change_ty_to_const_param_sugg =
you might have meant to write a const parameter here
resolve_unexpected_res_use_at_op_in_slice_pat_with_range_sugg =
if you meant to collect the rest of the slice in `{$ident}`, use the at operator
resolve_unnamed_crate_root_import =
crate root imports need to be explicitly named: `use crate as name;`
resolve_unreachable_label =
use of unreachable label `{$name}`
.label = unreachable label `{$name}`
@ -312,3 +462,8 @@ resolve_variable_bound_with_different_mode =
variable `{$variable_name}` is bound inconsistently across alternatives separated by `|`
.label = bound in different ways
.first_binding_span = first binding
resolve_variable_is_not_bound_in_all_patterns =
variable `{$name}` is not bound in all patterns
resolve_variable_not_in_all_patterns = variable not in all patterns

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@ -19,7 +19,6 @@ use rustc_ast::{self as ast, AssocItem, AssocItemKind, MetaItemKind, StmtKind};
use rustc_ast::{Block, ForeignItem, ForeignItemKind, Impl, Item, ItemKind, NodeId};
use rustc_attr as attr;
use rustc_data_structures::sync::Lrc;
use rustc_errors::{codes::*, struct_span_code_err, Applicability};
use rustc_expand::expand::AstFragment;
use rustc_hir::def::{self, *};
use rustc_hir::def_id::{DefId, LocalDefId, CRATE_DEF_ID};
@ -529,11 +528,7 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
}
if ident.name == kw::Crate {
self.r.dcx().span_err(
ident.span,
"crate root imports need to be explicitly named: \
`use crate as name;`",
);
self.r.dcx().emit_err(errors::UnnamedCrateRootImport { span: ident.span });
}
let kind = ImportKind::Single {
@ -848,16 +843,7 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
let expansion = parent_scope.expansion;
let (used, module, binding) = if orig_name.is_none() && ident.name == kw::SelfLower {
self.r
.dcx()
.struct_span_err(item.span, "`extern crate self;` requires renaming")
.with_span_suggestion(
item.span,
"rename the `self` crate to be able to import it",
"extern crate self as name;",
Applicability::HasPlaceholders,
)
.emit();
self.r.dcx().emit_err(errors::ExternCrateSelfRequiresRenaming { span: sp });
return;
} else if orig_name == Some(kw::SelfLower) {
Some(self.r.graph_root)
@ -897,9 +883,11 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
if parent == self.r.graph_root {
if let Some(entry) = self.r.extern_prelude.get(&ident.normalize_to_macros_2_0()) {
if expansion != LocalExpnId::ROOT && orig_name.is_some() && !entry.is_import() {
let msg = "macro-expanded `extern crate` items cannot \
shadow names passed with `--extern`";
self.r.dcx().span_err(item.span, msg);
self.r.dcx().emit_err(
errors::MacroExpandedExternCrateCannotShadowExternArguments {
span: item.span,
},
);
// `return` is intended to discard this binding because it's an
// unregistered ambiguity error which would result in a panic
// caused by inconsistency `path_res`
@ -1030,10 +1018,7 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
allow_shadowing: bool,
) {
if self.r.macro_use_prelude.insert(name, binding).is_some() && !allow_shadowing {
let msg = format!("`{name}` is already in scope");
let note =
"macro-expanded `#[macro_use]`s may not shadow existing macros (see RFC 1560)";
self.r.dcx().struct_span_err(span, msg).with_note(note).emit();
self.r.dcx().emit_err(errors::MacroUseNameAlreadyInUse { span, name });
}
}
@ -1044,13 +1029,9 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
for attr in &item.attrs {
if attr.has_name(sym::macro_use) {
if self.parent_scope.module.parent.is_some() {
struct_span_code_err!(
self.r.dcx(),
item.span,
E0468,
"an `extern crate` loading macros must be at the crate root"
)
.emit();
self.r.dcx().emit_err(errors::ExternCrateLoadingMacroNotAtCrateRoot {
span: item.span,
});
}
if let ItemKind::ExternCrate(Some(orig_name)) = item.kind {
if orig_name == kw::SelfLower {
@ -1058,7 +1039,7 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
}
}
let ill_formed = |span| {
struct_span_code_err!(self.r.dcx(), span, E0466, "bad macro import").emit();
self.r.dcx().emit_err(errors::BadMacroImport { span });
};
match attr.meta() {
Some(meta) => match meta.kind {
@ -1143,13 +1124,7 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
allow_shadowing,
);
} else {
struct_span_code_err!(
self.r.dcx(),
ident.span,
E0469,
"imported macro not found"
)
.emit();
self.r.dcx().emit_err(errors::ImportedMacroNotFound { span: ident.span });
}
}
}
@ -1160,18 +1135,16 @@ impl<'a, 'b, 'tcx> BuildReducedGraphVisitor<'a, 'b, 'tcx> {
fn contains_macro_use(&mut self, attrs: &[ast::Attribute]) -> bool {
for attr in attrs {
if attr.has_name(sym::macro_escape) {
let msg = "`#[macro_escape]` is a deprecated synonym for `#[macro_use]`";
let mut err = self.r.dcx().struct_span_warn(attr.span, msg);
if let ast::AttrStyle::Inner = attr.style {
err.help("try an outer attribute: `#[macro_use]`");
}
err.emit();
let inner_attribute = matches!(attr.style, ast::AttrStyle::Inner).then_some(());
self.r
.dcx()
.emit_warn(errors::MacroExternDeprecated { span: attr.span, inner_attribute });
} else if !attr.has_name(sym::macro_use) {
continue;
}
if !attr.is_word() {
self.r.dcx().span_err(attr.span, "arguments to `macro_use` are not allowed here");
self.r.dcx().emit_err(errors::ArgumentsMacroUseNotAllowed { span: attr.span });
}
return true;
}

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@ -6,8 +6,8 @@ use rustc_ast::{MetaItemKind, NestedMetaItem};
use rustc_ast_pretty::pprust;
use rustc_data_structures::fx::FxHashSet;
use rustc_errors::{
codes::*, pluralize, report_ambiguity_error, struct_span_code_err, Applicability, Diag,
DiagCtxt, ErrorGuaranteed, MultiSpan, SuggestionStyle,
codes::*, report_ambiguity_error, struct_span_code_err, Applicability, Diag, DiagCtxt,
ErrorGuaranteed, MultiSpan, SuggestionStyle,
};
use rustc_feature::BUILTIN_ATTRIBUTES;
use rustc_hir::def::Namespace::{self, *};
@ -29,10 +29,9 @@ use rustc_span::symbol::{kw, sym, Ident, Symbol};
use rustc_span::{BytePos, Span, SyntaxContext};
use thin_vec::{thin_vec, ThinVec};
use crate::errors::{AddedMacroUse, ChangeImportBinding, ChangeImportBindingSuggestion};
use crate::errors::{
ConsiderAddingADerive, ExplicitUnsafeTraits, MacroDefinedLater, MacroSuggMovePosition,
MaybeMissingMacroRulesName,
self, AddedMacroUse, ChangeImportBinding, ChangeImportBindingSuggestion, ConsiderAddingADerive,
ExplicitUnsafeTraits, MacroDefinedLater, MacroSuggMovePosition, MaybeMissingMacroRulesName,
};
use crate::imports::{Import, ImportKind};
use crate::late::{PatternSource, Rib};
@ -226,16 +225,6 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
ModuleKind::Block => "block",
};
let old_noun = match old_binding.is_import_user_facing() {
true => "import",
false => "definition",
};
let new_participle = match new_binding.is_import_user_facing() {
true => "imported",
false => "defined",
};
let (name, span) =
(ident.name, self.tcx.sess.source_map().guess_head_span(new_binding.span));
@ -254,35 +243,51 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
(TypeNS, _) => "type",
};
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_code_err!(self.dcx(), span, E0259, "{}", msg),
let code = match (old_binding.is_extern_crate(), new_binding.is_extern_crate()) {
(true, true) => E0259,
(true, _) | (_, true) => match new_binding.is_import() && old_binding.is_import() {
true => struct_span_code_err!(self.dcx(), span, E0254, "{}", msg),
false => struct_span_code_err!(self.dcx(), span, E0260, "{}", msg),
true => E0254,
false => E0260,
},
_ => match (old_binding.is_import_user_facing(), new_binding.is_import_user_facing()) {
(false, false) => struct_span_code_err!(self.dcx(), span, E0428, "{}", msg),
(true, true) => struct_span_code_err!(self.dcx(), span, E0252, "{}", msg),
_ => struct_span_code_err!(self.dcx(), span, E0255, "{}", msg),
(false, false) => E0428,
(true, true) => E0252,
_ => E0255,
},
};
err.note(format!(
"`{}` must be defined only once in the {} namespace of this {}",
name,
ns.descr(),
container
));
let label = match new_binding.is_import_user_facing() {
true => errors::NameDefinedMultipleTimeLabel::Reimported { span, name },
false => errors::NameDefinedMultipleTimeLabel::Redefined { span, name },
};
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 {old_noun} of the {old_kind} `{name}` here"),
);
}
let old_binding_label =
(!old_binding.span.is_dummy() && old_binding.span != span).then(|| {
let span = self.tcx.sess.source_map().guess_head_span(old_binding.span);
match old_binding.is_import_user_facing() {
true => errors::NameDefinedMultipleTimeOldBindingLabel::Import {
span,
name,
old_kind,
},
false => errors::NameDefinedMultipleTimeOldBindingLabel::Definition {
span,
name,
old_kind,
},
}
});
let mut err = self
.dcx()
.create_err(errors::NameDefinedMultipleTime {
span,
descr: ns.descr(),
container,
label,
old_binding_label,
})
.with_code(code);
// See https://github.com/rust-lang/rust/issues/32354
use NameBindingKind::Import;
@ -330,20 +335,20 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
match import {
Some((import, span, true)) if should_remove_import && import.is_nested() => {
self.add_suggestion_for_duplicate_nested_use(&mut err, import, span)
self.add_suggestion_for_duplicate_nested_use(&mut err, import, span);
}
Some((import, _, true)) if should_remove_import && !import.is_glob() => {
// Simple case - remove the entire import. Due to the above match arm, this can
// only be a single use so just remove it entirely.
err.tool_only_span_suggestion(
import.use_span_with_attributes,
"remove unnecessary import",
"",
Applicability::MaybeIncorrect,
err.subdiagnostic(
self.tcx.dcx(),
errors::ToolOnlyRemoveUnnecessaryImport {
span: import.use_span_with_attributes,
},
);
}
Some((import, span, _)) => {
self.add_suggestion_for_rename_of_use(&mut err, name, import, span)
self.add_suggestion_for_rename_of_use(&mut err, name, import, span);
}
_ => {}
}
@ -444,7 +449,6 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
binding_span: Span,
) {
assert!(import.is_nested());
let message = "remove unnecessary import";
// Two examples will be used to illustrate the span manipulations we're doing:
//
@ -460,22 +464,20 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
// previous imports.
if found_closing_brace {
if let Some(span) = extend_span_to_previous_binding(self.tcx.sess, span) {
err.tool_only_span_suggestion(span, message, "", Applicability::MaybeIncorrect);
err.subdiagnostic(self.dcx(), errors::ToolOnlyRemoveUnnecessaryImport { span });
} else {
// Remove the entire line if we cannot extend the span back, this indicates an
// `issue_52891::{self}` case.
err.span_suggestion(
import.use_span_with_attributes,
message,
"",
Applicability::MaybeIncorrect,
err.subdiagnostic(
self.dcx(),
errors::RemoveUnnecessaryImport { span: import.use_span_with_attributes },
);
}
return;
}
err.span_suggestion(span, message, "", Applicability::MachineApplicable);
err.subdiagnostic(self.dcx(), errors::RemoveUnnecessaryImport { span });
}
pub(crate) fn lint_if_path_starts_with_module(
@ -571,14 +573,21 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
resolution_error: ResolutionError<'a>,
) -> Diag<'_> {
match resolution_error {
ResolutionError::GenericParamsFromOuterItem(outer_res, has_generic_params, def_kind) => {
ResolutionError::GenericParamsFromOuterItem(
outer_res,
has_generic_params,
def_kind,
) => {
use errs::GenericParamsFromOuterItemLabel as Label;
let static_or_const = match def_kind {
DefKind::Static{ .. } => Some(errs::GenericParamsFromOuterItemStaticOrConst::Static),
DefKind::Static { .. } => {
Some(errs::GenericParamsFromOuterItemStaticOrConst::Static)
}
DefKind::Const => Some(errs::GenericParamsFromOuterItemStaticOrConst::Const),
_ => None,
};
let is_self = matches!(outer_res, Res::SelfTyParam { .. } | Res::SelfTyAlias { .. });
let is_self =
matches!(outer_res, Res::SelfTyParam { .. } | Res::SelfTyAlias { .. });
let mut err = errs::GenericParamsFromOuterItem {
span,
label: None,
@ -677,18 +686,14 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
let origin_sp = origin.iter().copied().collect::<Vec<_>>();
let msp = MultiSpan::from_spans(target_sp.clone());
let mut err = struct_span_code_err!(
self.dcx(),
msp,
E0408,
"variable `{}` is not bound in all patterns",
name,
);
let mut err = self
.dcx()
.create_err(errors::VariableIsNotBoundInAllPatterns { multispan: msp, name });
for sp in target_sp {
err.span_label(sp, format!("pattern doesn't bind `{name}`"));
err.subdiagnostic(self.dcx(), errors::PatternDoesntBindName { span: sp, name });
}
for sp in origin_sp {
err.span_label(sp, "variable not in all patterns");
err.subdiagnostic(self.dcx(), errors::VariableNotInAllPatterns { span: sp });
}
if could_be_path {
let import_suggestions = self.lookup_import_candidates(
@ -961,17 +966,16 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
code,
trait_item_span,
trait_path,
} => {
self.dcx().struct_span_err(
} => self
.dcx()
.create_err(errors::TraitImplMismatch {
span,
format!(
"item `{name}` is an associated {kind}, which doesn't match its trait `{trait_path}`",
),
)
.with_code(code)
.with_span_label(span, "does not match trait")
.with_span_label(trait_item_span, "item in trait")
}
name,
kind,
trait_path,
trait_item_span,
})
.with_code(code),
ResolutionError::TraitImplDuplicate { name, trait_item_span, old_span } => self
.dcx()
.create_err(errs::TraitImplDuplicate { span, name, trait_item_span, old_span }),
@ -1005,7 +1009,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
ResolutionError::FailedToResolve { segment: None, label, suggestion, module: None },
),
VisResolutionError::ExpectedFound(span, path_str, res) => {
self.dcx().create_err(errs::ExpectedFound { span, res, path_str })
self.dcx().create_err(errs::ExpectedModuleFound { span, res, path_str })
}
VisResolutionError::Indeterminate(span) => {
self.dcx().create_err(errs::Indeterminate(span))
@ -1532,17 +1536,23 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
};
if let crate::NameBindingKind::Import { import, .. } = binding.kind {
if !import.span.is_dummy() {
err.span_note(
import.span,
format!("`{ident}` is imported here, but it is {desc}"),
);
let note = errors::IdentImporterHereButItIsDesc {
span: import.span,
imported_ident: ident,
imported_ident_desc: &desc,
};
err.subdiagnostic(self.tcx.dcx(), note);
// Silence the 'unused import' warning we might get,
// since this diagnostic already covers that import.
self.record_use(ident, binding, Used::Other);
return;
}
}
err.note(format!("`{ident}` is in scope, but it is {desc}"));
let note = errors::IdentInScopeButItIsDesc {
imported_ident: ident,
imported_ident_desc: &desc,
};
err.subdiagnostic(self.tcx.dcx(), note);
return;
}
}
@ -1582,20 +1592,18 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
// | ^
return false;
}
let prefix = match suggestion.target {
SuggestionTarget::SimilarlyNamed => "similarly named ",
SuggestionTarget::SingleItem => "",
let span = self.tcx.sess.source_map().guess_head_span(def_span);
let candidate_descr = suggestion.res.descr();
let candidate = suggestion.candidate;
let label = match suggestion.target {
SuggestionTarget::SimilarlyNamed => {
errors::DefinedHere::SimilarlyNamed { span, candidate_descr, candidate }
}
SuggestionTarget::SingleItem => {
errors::DefinedHere::SingleItem { span, candidate_descr, candidate }
}
};
err.span_label(
self.tcx.sess.source_map().guess_head_span(def_span),
format!(
"{}{} `{}` defined here",
prefix,
suggestion.res.descr(),
suggestion.candidate,
),
);
err.subdiagnostic(self.tcx.dcx(), label);
}
let (span, sugg, post) = if let SuggestionTarget::SimilarlyNamed = suggestion.target
@ -1749,16 +1757,9 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
|b: NameBinding<'_>| if b.is_import() { &import_descr } else { &nonimport_descr };
// Print the primary message.
let descr = get_descr(binding);
let mut err = struct_span_code_err!(
self.dcx(),
ident.span,
E0603,
"{} `{}` is private",
descr,
ident
);
err.span_label(ident.span, format!("private {descr}"));
let ident_descr = get_descr(binding);
let mut err =
self.dcx().create_err(errors::IsPrivate { span: ident.span, ident_descr, ident });
let mut not_publicly_reexported = false;
if let Some((this_res, outer_ident)) = outermost_res {
@ -1782,10 +1783,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
// If we suggest importing a public re-export, don't point at the definition.
if point_to_def && ident.span != outer_ident.span {
not_publicly_reexported = true;
err.span_label(
outer_ident.span,
format!("{} `{outer_ident}` is not publicly re-exported", this_res.descr()),
);
let label = errors::OuterIdentIsNotPubliclyReexported {
span: outer_ident.span,
outer_ident_descr: this_res.descr(),
outer_ident,
};
err.subdiagnostic(self.tcx.dcx(), label);
}
}
@ -1799,18 +1802,15 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
{
non_exhaustive = Some(attr.span);
} else if let Some(span) = ctor_fields_span {
err.span_label(span, "a constructor is private if any of the fields is private");
let label = errors::ConstructorPrivateIfAnyFieldPrivate { span };
err.subdiagnostic(self.tcx.dcx(), label);
if let Res::Def(_, d) = res
&& let Some(fields) = self.field_visibility_spans.get(&d)
{
err.multipart_suggestion_verbose(
format!(
"consider making the field{} publicly accessible",
pluralize!(fields.len())
),
fields.iter().map(|span| (*span, "pub ".to_string())).collect(),
Applicability::MaybeIncorrect,
);
let spans = fields.iter().map(|span| *span).collect();
let sugg =
errors::ConsiderMakingTheFieldPublic { spans, number_of_fields: fields.len() };
err.subdiagnostic(self.tcx.dcx(), sugg);
}
}
@ -1893,13 +1893,6 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
NameBindingKind::Res(_) | NameBindingKind::Module(_) => {}
}
let first = binding == first_binding;
let msg = format!(
"{and_refers_to}the {item} `{name}`{which} is defined here{dots}",
and_refers_to = if first { "" } else { "...and refers to " },
item = get_descr(binding),
which = if first { "" } else { " which" },
dots = if next_binding.is_some() { "..." } else { "" },
);
let def_span = self.tcx.sess.source_map().guess_head_span(binding.span);
let mut note_span = MultiSpan::from_span(def_span);
if !first && binding.vis.is_public() {
@ -1919,7 +1912,14 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
"cannot be constructed because it is `#[non_exhaustive]`",
);
}
err.span_note(note_span, msg);
let note = errors::NoteAndRefersToTheItemDefinedHere {
span: note_span,
binding_descr: get_descr(binding),
binding_name: name,
first,
dots: next_binding.is_some(),
};
err.subdiagnostic(self.tcx.dcx(), note);
}
// We prioritize shorter paths, non-core imports and direct imports over the alternatives.
sugg_paths.sort_by_key(|(p, reexport)| (p.len(), p[0] == "core", *reexport));
@ -1933,15 +1933,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
continue;
}
let path = sugg.join("::");
err.span_suggestion_verbose(
dedup_span,
format!(
"import `{ident}` {}",
if reexport { "through the re-export" } else { "directly" }
),
path,
Applicability::MachineApplicable,
);
let sugg = if reexport {
errors::ImportIdent::ThroughReExport { span: dedup_span, ident, path }
} else {
errors::ImportIdent::Directly { span: dedup_span, ident, path }
};
err.subdiagnostic(self.tcx.dcx(), sugg);
break;
}
@ -2521,13 +2518,15 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
continue;
}
err.span_note(name.span, "found an item that was configured out");
let note = errors::FoundItemConfigureOut { span: name.span };
err.subdiagnostic(self.tcx.dcx(), note);
if let MetaItemKind::List(nested) = &cfg.kind
&& let NestedMetaItem::MetaItem(meta_item) = &nested[0]
&& let MetaItemKind::NameValue(feature_name) = &meta_item.kind
{
err.note(format!("the item is gated behind the `{}` feature", feature_name.symbol));
let note = errors::ItemWasBehindFeature { feature: feature_name.symbol };
err.subdiagnostic(self.tcx.dcx(), note);
}
}
}

View File

@ -1,4 +1,4 @@
use rustc_errors::{codes::*, Applicability};
use rustc_errors::{codes::*, Applicability, MultiSpan};
use rustc_macros::{Diagnostic, Subdiagnostic};
use rustc_span::{
symbol::{Ident, Symbol},
@ -495,8 +495,8 @@ pub(crate) struct Relative2018 {
pub(crate) struct AncestorOnly(#[primary_span] pub(crate) Span);
#[derive(Diagnostic)]
#[diag(resolve_expected_found, code = E0577)]
pub(crate) struct ExpectedFound {
#[diag(resolve_expected_module_found, code = E0577)]
pub(crate) struct ExpectedModuleFound {
#[primary_span]
#[label]
pub(crate) span: Span,
@ -525,8 +525,10 @@ pub(crate) struct ModuleOnly(#[primary_span] pub(crate) Span);
#[diag(resolve_macro_expected_found)]
pub(crate) struct MacroExpectedFound<'a> {
#[primary_span]
#[label]
pub(crate) span: Span,
pub(crate) found: &'a str,
pub(crate) article: &'static str,
pub(crate) expected: &'a str,
pub(crate) macro_path: &'a str,
#[subdiagnostic]
@ -801,3 +803,421 @@ pub(crate) struct UnexpectedResUseAtOpInSlicePatWithRangeSugg {
pub ident: Ident,
pub snippet: String,
}
#[derive(Diagnostic)]
#[diag(resolve_extern_crate_loading_macro_not_at_crate_root, code = E0468)]
pub(crate) struct ExternCrateLoadingMacroNotAtCrateRoot {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_bad_macro_import, code = E0466)]
pub(crate) struct BadMacroImport {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_extern_crate_self_requires_renaming)]
pub(crate) struct ExternCrateSelfRequiresRenaming {
#[primary_span]
#[suggestion(code = "extern crate self as name;", applicability = "has-placeholders")]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_macro_use_name_already_in_use)]
#[note]
pub(crate) struct MacroUseNameAlreadyInUse {
#[primary_span]
pub(crate) span: Span,
pub(crate) name: Symbol,
}
#[derive(Diagnostic)]
#[diag(resolve_imported_macro_not_found, code = E0469)]
pub(crate) struct ImportedMacroNotFound {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_macro_extern_deprecated)]
pub(crate) struct MacroExternDeprecated {
#[primary_span]
pub(crate) span: Span,
#[help]
pub inner_attribute: Option<()>,
}
#[derive(Diagnostic)]
#[diag(resolve_arguments_macro_use_not_allowed)]
pub(crate) struct ArgumentsMacroUseNotAllowed {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_unnamed_crate_root_import)]
pub(crate) struct UnnamedCrateRootImport {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_macro_expanded_extern_crate_cannot_shadow_extern_arguments)]
pub(crate) struct MacroExpandedExternCrateCannotShadowExternArguments {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_elided_anonymous_lifetime_report_error, code = E0637)]
pub(crate) struct ElidedAnonymousLivetimeReportError {
#[primary_span]
#[label]
pub(crate) span: Span,
#[subdiagnostic]
pub(crate) suggestion: Option<ElidedAnonymousLivetimeReportErrorSuggestion>,
}
#[derive(Subdiagnostic)]
#[multipart_suggestion(
resolve_elided_anonymous_lifetime_report_error_suggestion,
applicability = "machine-applicable"
)]
pub(crate) struct ElidedAnonymousLivetimeReportErrorSuggestion {
#[suggestion_part(code = "for<'a> ")]
pub(crate) lo: Span,
#[suggestion_part(code = "'a ")]
pub(crate) hi: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_explicit_anonymous_lifetime_report_error, code = E0637)]
pub(crate) struct ExplicitAnonymousLivetimeReportError {
#[primary_span]
#[label]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_implicit_elided_lifetimes_not_allowed_here, code = E0726)]
pub(crate) struct ImplicitElidedLifetimeNotAllowedHere {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_underscore_lifetime_is_reserved, code = E0637)]
pub(crate) struct UnderscoreLifetimeIsReserved {
#[primary_span]
#[label]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_static_lifetime_is_reserved, code = E0262)]
pub(crate) struct StaticLifetimeIsReserved {
#[primary_span]
#[label]
pub(crate) span: Span,
pub(crate) lifetime: Ident,
}
#[derive(Diagnostic)]
#[diag(resolve_attempt_to_define_builtin_macro_twice, code = E0773)]
pub(crate) struct AttemptToDefineBuiltinMacroTwice {
#[primary_span]
pub(crate) span: Span,
#[note]
pub(crate) note_span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_variable_is_not_bound_in_all_patterns, code = E0408)]
pub(crate) struct VariableIsNotBoundInAllPatterns {
#[primary_span]
pub(crate) multispan: MultiSpan,
pub(crate) name: Symbol,
}
#[derive(Subdiagnostic, Debug, Clone)]
#[label(resolve_pattern_doesnt_bind_name)]
pub(crate) struct PatternDoesntBindName {
#[primary_span]
pub(crate) span: Span,
pub(crate) name: Symbol,
}
#[derive(Subdiagnostic, Debug, Clone)]
#[label(resolve_variable_not_in_all_patterns)]
pub(crate) struct VariableNotInAllPatterns {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_name_defined_multiple_time)]
#[note]
pub(crate) struct NameDefinedMultipleTime {
#[primary_span]
pub(crate) span: Span,
pub(crate) descr: &'static str,
pub(crate) container: &'static str,
#[subdiagnostic]
pub(crate) label: NameDefinedMultipleTimeLabel,
#[subdiagnostic]
pub(crate) old_binding_label: Option<NameDefinedMultipleTimeOldBindingLabel>,
}
#[derive(Subdiagnostic)]
pub(crate) enum NameDefinedMultipleTimeLabel {
#[label(resolve_name_defined_multiple_time_reimported)]
Reimported {
#[primary_span]
span: Span,
name: Symbol,
},
#[label(resolve_name_defined_multiple_time_redefined)]
Redefined {
#[primary_span]
span: Span,
name: Symbol,
},
}
#[derive(Subdiagnostic)]
pub(crate) enum NameDefinedMultipleTimeOldBindingLabel {
#[label(resolve_name_defined_multiple_time_old_binding_import)]
Import {
#[primary_span]
span: Span,
name: Symbol,
old_kind: &'static str,
},
#[label(resolve_name_defined_multiple_time_old_binding_definition)]
Definition {
#[primary_span]
span: Span,
name: Symbol,
old_kind: &'static str,
},
}
#[derive(Diagnostic)]
#[diag(resolve_is_private, code = E0603)]
pub(crate) struct IsPrivate<'a> {
#[primary_span]
#[label]
pub(crate) span: Span,
pub(crate) ident_descr: &'a str,
pub(crate) ident: Ident,
}
#[derive(Diagnostic)]
#[diag(resolve_generic_arguments_in_macro_path)]
pub(crate) struct GenericArgumentsInMacroPath {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_attributes_starting_with_rustc_are_reserved)]
pub(crate) struct AttributesStartingWithRustcAreReserved {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_cannot_use_through_an_import)]
pub(crate) struct CannotUseThroughAnImport {
#[primary_span]
pub(crate) span: Span,
pub(crate) article: &'static str,
pub(crate) descr: &'static str,
#[note]
pub(crate) binding_span: Option<Span>,
}
#[derive(Diagnostic)]
#[diag(resolve_name_reserved_in_attribute_namespace)]
pub(crate) struct NameReservedInAttributeNamespace {
#[primary_span]
pub(crate) span: Span,
pub(crate) ident: Ident,
}
#[derive(Diagnostic)]
#[diag(resolve_cannot_find_builtin_macro_with_name)]
pub(crate) struct CannotFindBuiltinMacroWithName {
#[primary_span]
pub(crate) span: Span,
pub(crate) ident: Ident,
}
#[derive(Diagnostic)]
#[diag(resolve_tool_was_already_registered)]
pub(crate) struct ToolWasAlreadyRegistered {
#[primary_span]
pub(crate) span: Span,
pub(crate) tool: Ident,
#[label]
pub(crate) old_ident_span: Span,
}
#[derive(Diagnostic)]
#[diag(resolve_tool_only_accepts_identifiers)]
pub(crate) struct ToolOnlyAcceptsIdentifiers {
#[label]
#[primary_span]
pub(crate) span: Span,
pub(crate) tool: Symbol,
}
#[derive(Subdiagnostic)]
pub(crate) enum DefinedHere {
#[label(resolve_similarly_named_defined_here)]
SimilarlyNamed {
#[primary_span]
span: Span,
candidate_descr: &'static str,
candidate: Symbol,
},
#[label(resolve_single_item_defined_here)]
SingleItem {
#[primary_span]
span: Span,
candidate_descr: &'static str,
candidate: Symbol,
},
}
#[derive(Subdiagnostic)]
#[label(resolve_outer_ident_is_not_publicly_reexported)]
pub(crate) struct OuterIdentIsNotPubliclyReexported {
#[primary_span]
pub(crate) span: Span,
pub(crate) outer_ident_descr: &'static str,
pub(crate) outer_ident: Ident,
}
#[derive(Subdiagnostic)]
#[label(resolve_constructor_private_if_any_field_private)]
pub(crate) struct ConstructorPrivateIfAnyFieldPrivate {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Subdiagnostic)]
#[multipart_suggestion(
resolve_consider_making_the_field_public,
applicability = "maybe-incorrect",
style = "verbose"
)]
pub(crate) struct ConsiderMakingTheFieldPublic {
#[suggestion_part(code = "pub ")]
pub(crate) spans: Vec<Span>,
pub(crate) number_of_fields: usize,
}
#[derive(Subdiagnostic)]
pub(crate) enum ImportIdent {
#[suggestion(
resolve_suggestion_import_ident_through_reexport,
code = "{path}",
applicability = "machine-applicable",
style = "verbose"
)]
ThroughReExport {
#[primary_span]
span: Span,
ident: Ident,
path: String,
},
#[suggestion(
resolve_suggestion_import_ident_directly,
code = "{path}",
applicability = "machine-applicable",
style = "verbose"
)]
Directly {
#[primary_span]
span: Span,
ident: Ident,
path: String,
},
}
#[derive(Subdiagnostic)]
#[note(resolve_note_and_refers_to_the_item_defined_here)]
pub(crate) struct NoteAndRefersToTheItemDefinedHere<'a> {
#[primary_span]
pub(crate) span: MultiSpan,
pub(crate) binding_descr: &'a str,
pub(crate) binding_name: Ident,
pub(crate) first: bool,
pub(crate) dots: bool,
}
#[derive(Subdiagnostic)]
#[suggestion(resolve_remove_unnecessary_import, code = "", applicability = "maybe-incorrect")]
pub(crate) struct RemoveUnnecessaryImport {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Subdiagnostic)]
#[suggestion(
resolve_remove_unnecessary_import,
code = "",
applicability = "maybe-incorrect",
style = "tool-only"
)]
pub(crate) struct ToolOnlyRemoveUnnecessaryImport {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Subdiagnostic)]
#[note(resolve_ident_imported_here_but_it_is_desc)]
pub(crate) struct IdentImporterHereButItIsDesc<'a> {
#[primary_span]
pub(crate) span: Span,
pub(crate) imported_ident: Ident,
pub(crate) imported_ident_desc: &'a str,
}
#[derive(Subdiagnostic)]
#[note(resolve_ident_in_scope_but_it_is_desc)]
pub(crate) struct IdentInScopeButItIsDesc<'a> {
pub(crate) imported_ident: Ident,
pub(crate) imported_ident_desc: &'a str,
}
#[derive(Subdiagnostic)]
#[note(resolve_found_an_item_configured_out)]
pub(crate) struct FoundItemConfigureOut {
#[primary_span]
pub(crate) span: Span,
}
#[derive(Subdiagnostic)]
#[note(resolve_item_was_behind_feature)]
pub(crate) struct ItemWasBehindFeature {
pub(crate) feature: Symbol,
}
#[derive(Diagnostic)]
#[diag(resolve_trait_impl_mismatch)]
pub(crate) struct TraitImplMismatch {
#[primary_span]
#[label]
pub(crate) span: Span,
pub(crate) name: Symbol,
pub(crate) kind: &'static str,
pub(crate) trait_path: String,
#[label(resolve_trait_impl_mismatch_label_item)]
pub(crate) trait_item_span: Span,
}

View File

@ -6,8 +6,7 @@
//! If you wonder why there's no `early.rs`, that's because it's split into three files -
//! `build_reduced_graph.rs`, `macros.rs` and `imports.rs`.
use crate::errors::ImportsCannotReferTo;
use crate::{path_names_to_string, rustdoc, BindingError, Finalize, LexicalScopeBinding};
use crate::{errors, path_names_to_string, rustdoc, BindingError, Finalize, LexicalScopeBinding};
use crate::{BindingKey, Used};
use crate::{Module, ModuleOrUniformRoot, NameBinding, ParentScope, PathResult};
use crate::{ResolutionError, Resolver, Segment, UseError};
@ -16,9 +15,7 @@ use rustc_ast::ptr::P;
use rustc_ast::visit::{walk_list, AssocCtxt, BoundKind, FnCtxt, FnKind, Visitor};
use rustc_ast::*;
use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap};
use rustc_errors::{
codes::*, struct_span_code_err, Applicability, DiagArgValue, IntoDiagArg, StashKey,
};
use rustc_errors::{codes::*, Applicability, DiagArgValue, IntoDiagArg, StashKey};
use rustc_hir::def::Namespace::{self, *};
use rustc_hir::def::{self, CtorKind, DefKind, LifetimeRes, NonMacroAttrKind, PartialRes, PerNS};
use rustc_hir::def_id::{DefId, LocalDefId, CRATE_DEF_ID, LOCAL_CRATE};
@ -1666,18 +1663,8 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
);
}
LifetimeRibKind::AnonymousReportError => {
let (msg, note) = if elided {
(
"`&` without an explicit lifetime name cannot be used here",
"explicit lifetime name needed here",
)
} else {
("`'_` cannot be used here", "`'_` is a reserved lifetime name")
};
let mut diag =
struct_span_code_err!(self.r.dcx(), lifetime.ident.span, E0637, "{}", msg,);
diag.span_label(lifetime.ident.span, note);
if elided {
let mut suggestion = None;
for rib in self.lifetime_ribs[i..].iter().rev() {
if let LifetimeRibKind::Generics {
span,
@ -1685,19 +1672,23 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
..
} = &rib.kind
{
diag.multipart_suggestion(
"consider introducing a higher-ranked lifetime here",
vec![
(span.shrink_to_lo(), "for<'a> ".into()),
(lifetime.ident.span.shrink_to_hi(), "'a ".into()),
],
Applicability::MachineApplicable,
);
suggestion =
Some(errors::ElidedAnonymousLivetimeReportErrorSuggestion {
lo: span.shrink_to_lo(),
hi: lifetime.ident.span.shrink_to_hi(),
});
break;
}
}
}
diag.emit();
self.r.dcx().emit_err(errors::ElidedAnonymousLivetimeReportError {
span: lifetime.ident.span,
suggestion,
});
} else {
self.r.dcx().emit_err(errors::ExplicitAnonymousLivetimeReportError {
span: lifetime.ident.span,
});
};
self.record_lifetime_res(lifetime.id, LifetimeRes::Error, elision_candidate);
return;
}
@ -1863,13 +1854,11 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
// async fn foo(_: std::cell::Ref<u32>) { ... }
LifetimeRibKind::AnonymousCreateParameter { report_in_path: true, .. }
| LifetimeRibKind::AnonymousWarn(_) => {
let mut err =
self.r.dcx().create_err(errors::ImplicitElidedLifetimeNotAllowedHere {
span: path_span,
});
let sess = self.r.tcx.sess;
let mut err = struct_span_code_err!(
sess.dcx(),
path_span,
E0726,
"implicit elided lifetime not allowed here"
);
rustc_errors::add_elided_lifetime_in_path_suggestion(
sess.source_map(),
&mut err,
@ -2313,7 +2302,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
let report_error = |this: &Self, ns| {
if this.should_report_errs() {
let what = if ns == TypeNS { "type parameters" } else { "local variables" };
this.r.dcx().emit_err(ImportsCannotReferTo { span: ident.span, what });
this.r.dcx().emit_err(errors::ImportsCannotReferTo { span: ident.span, what });
}
};
@ -2633,29 +2622,19 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
}
if param.ident.name == kw::UnderscoreLifetime {
struct_span_code_err!(
self.r.dcx(),
param.ident.span,
E0637,
"`'_` cannot be used here"
)
.with_span_label(param.ident.span, "`'_` is a reserved lifetime name")
.emit();
self.r
.dcx()
.emit_err(errors::UnderscoreLifetimeIsReserved { span: param.ident.span });
// Record lifetime res, so lowering knows there is something fishy.
self.record_lifetime_param(param.id, LifetimeRes::Error);
continue;
}
if param.ident.name == kw::StaticLifetime {
struct_span_code_err!(
self.r.dcx(),
param.ident.span,
E0262,
"invalid lifetime parameter name: `{}`",
param.ident,
)
.with_span_label(param.ident.span, "'static is a reserved lifetime name")
.emit();
self.r.dcx().emit_err(errors::StaticLifetimeIsReserved {
span: param.ident.span,
lifetime: param.ident,
});
// Record lifetime res, so lowering knows there is something fishy.
self.record_lifetime_param(param.id, LifetimeRes::Error);
continue;

View File

@ -14,7 +14,7 @@ use rustc_ast_pretty::pprust;
use rustc_attr::StabilityLevel;
use rustc_data_structures::intern::Interned;
use rustc_data_structures::sync::Lrc;
use rustc_errors::{codes::*, struct_span_code_err, Applicability, StashKey};
use rustc_errors::{Applicability, StashKey};
use rustc_expand::base::{Annotatable, DeriveResolutions, Indeterminate, ResolverExpand};
use rustc_expand::base::{SyntaxExtension, SyntaxExtensionKind};
use rustc_expand::compile_declarative_macro;
@ -123,20 +123,18 @@ pub(crate) fn registered_tools(tcx: TyCtxt<'_>, (): ()) -> RegisteredTools {
match nested_meta.ident() {
Some(ident) => {
if let Some(old_ident) = registered_tools.replace(ident) {
let msg = format!("{} `{}` was already registered", "tool", ident);
tcx.dcx()
.struct_span_err(ident.span, msg)
.with_span_label(old_ident.span, "already registered here")
.emit();
tcx.dcx().emit_err(errors::ToolWasAlreadyRegistered {
span: ident.span,
tool: ident,
old_ident_span: old_ident.span,
});
}
}
None => {
let msg = format!("`{}` only accepts identifiers", sym::register_tool);
let span = nested_meta.span();
tcx.dcx()
.struct_span_err(span, msg)
.with_span_label(span, "not an identifier")
.emit();
tcx.dcx().emit_err(errors::ToolOnlyAcceptsIdentifiers {
span: nested_meta.span(),
tool: sym::register_tool,
});
}
}
}
@ -485,13 +483,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
// Report errors for the resolved macro.
for segment in &path.segments {
if let Some(args) = &segment.args {
self.dcx().span_err(args.span(), "generic arguments in macro path");
self.dcx().emit_err(errors::GenericArgumentsInMacroPath { span: args.span() });
}
if kind == MacroKind::Attr && segment.ident.as_str().starts_with("rustc") {
self.dcx().span_err(
segment.ident.span,
"attributes starting with `rustc` are reserved for use by the `rustc` compiler",
);
self.dcx().emit_err(errors::AttributesStartingWithRustcAreReserved {
span: segment.ident.span,
});
}
}
@ -535,6 +532,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
let mut err = MacroExpectedFound {
span: path.span,
expected,
article,
found: res.descr(),
macro_path: &path_str,
remove_surrounding_derive: None,
@ -550,10 +548,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
err.add_as_non_derive = Some(AddAsNonDerive { macro_path: &path_str });
}
self.dcx()
.create_err(err)
.with_span_label(path.span, format!("not {article} {expected}"))
.emit();
self.dcx().emit_err(err);
return Ok((self.dummy_ext(kind), Res::Err));
}
@ -872,13 +867,13 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
) {
if let Some(Res::NonMacroAttr(kind)) = res {
if kind != NonMacroAttrKind::Tool && binding.map_or(true, |b| b.is_import()) {
let msg =
format!("cannot use {} {} through an import", kind.article(), kind.descr());
let mut err = self.dcx().struct_span_err(span, msg);
if let Some(binding) = binding {
err.span_note(binding.span, format!("the {} imported here", kind.descr()));
}
err.emit();
let binding_span = binding.map(|binding| binding.span);
self.dcx().emit_err(errors::CannotUseThroughAnImport {
span,
article: kind.article(),
descr: kind.descr(),
binding_span,
});
}
}
}
@ -889,10 +884,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
if ident.name == sym::cfg || ident.name == sym::cfg_attr {
let macro_kind = self.get_macro(res).map(|macro_data| macro_data.ext.macro_kind());
if macro_kind.is_some() && sub_namespace_match(macro_kind, Some(MacroKind::Attr)) {
self.dcx().span_err(
ident.span,
format!("name `{ident}` is reserved in attribute namespace"),
);
self.dcx()
.emit_err(errors::NameReservedInAttributeNamespace { span: ident.span, ident });
}
}
}
@ -916,19 +909,17 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
rule_spans = Vec::new();
}
BuiltinMacroState::AlreadySeen(span) => {
struct_span_code_err!(
self.dcx(),
item.span,
E0773,
"attempted to define built-in macro more than once"
)
.with_span_note(span, "previously defined here")
.emit();
self.dcx().emit_err(errors::AttemptToDefineBuiltinMacroTwice {
span: item.span,
note_span: span,
});
}
}
} else {
let msg = format!("cannot find a built-in macro with name `{}`", item.ident);
self.dcx().span_err(item.span, msg);
self.dcx().emit_err(errors::CannotFindBuiltinMacroWithName {
span: item.span,
ident: item.ident,
});
}
}