Rollup merge of #136344 - zachs18:dot_notation_more_defkinds_3, r=davidtwco
Suggest replacing `.` with `::` in more error diagnostics. First commit makes the existing "help: use the path separator to refer to an item" also work when the base is a type alias, not just a trait/module/struct. The existing unconditional `DefKind::Mod | DefKind::Trait` match arm is changed to a conditional `DefKind::Mod | DefKind::Trait | DefKind::TyAlias` arm that only matches if the `path_sep` suggestion-adding closure succeeds, so as not to stop the later `DefKind::TyAlias`-specific suggestions if the path-sep suggestion does not apply. This shouldn't change behavior for `Mod` or `Trait` (due to the default arm's `return false` etc). This commit also updates `tests/ui/resolve/issue-22692.rs` to reflect this, and also renames it to something more meaningful. This commit also makes the `bad_struct_syntax_suggestion` closure take `err` as a parameter instead of capturing it, since otherwise caused borrowing errors due to the change to using `path_sep` in a pattern guard. <details> <summary> Type alias diagnostic example </summary> ```rust type S = String; fn main() { let _ = S.new; } ``` ```diff error[E0423]: expected value, found type alias `S` --> diag7.rs:4:13 | 4 | let _ = S.new; | ^ | - = note: can't use a type alias as a constructor + help: use the path separator to refer to an item + | +4 | let _ = S::new; + | ~~ ``` </details> Second commit adds some cases for `enum`s, where if there is a field/method expression where the field/method has the name of a unit/tuple variant, we assume the user intended to create that variant[^1] and suggest replacing the `.` from the field/method suggestion with a `::` path separator. If no such variant is found (or if the error is not a field/method expression), we give the existing suggestion that suggests adding `::TupleVariant(/* fields */)` after the enum. <details> <summary> Enum diagnostic example </summary> ```rust enum Foo { A(u32), B, C { x: u32 }, } fn main() { let _ = Foo.A(42); // changed let _ = Foo.B; // changed let _ = Foo.D(42); // no change let _ = Foo.D; // no change let _ = Foo(42); // no change } ``` ```diff error[E0423]: expected value, found enum `Foo` --> diag8.rs:8:13 | 8 | let _ = Foo.A(42); // changed | ^^^ | note: the enum is defined here --> diag8.rs:1:1 | 1 | / enum Foo { 2 | | A(u32), 3 | | B, 4 | | C { x: u32 }, 5 | | } | |_^ -help: you might have meant to use the following enum variant - | -8 | let _ = Foo::B.A(42); // changed - | ~~~~~~ -help: alternatively, the following enum variant is available +help: use the path separator to refer to a variant | -8 | let _ = (Foo::A(/* fields */)).A(42); // changed - | ~~~~~~~~~~~~~~~~~~~~~~ +8 | let _ = Foo::A(42); // changed + | ~~ error[E0423]: expected value, found enum `Foo` --> diag8.rs:9:13 | 9 | let _ = Foo.B; // changed | ^^^ | note: the enum is defined here --> diag8.rs:1:1 | 1 | / enum Foo { 2 | | A(u32), 3 | | B, 4 | | C { x: u32 }, 5 | | } | |_^ -help: you might have meant to use the following enum variant - | -9 | let _ = Foo::B.B; // changed - | ~~~~~~ -help: alternatively, the following enum variant is available +help: use the path separator to refer to a variant | -9 | let _ = (Foo::A(/* fields */)).B; // changed - | ~~~~~~~~~~~~~~~~~~~~~~ +9 | let _ = Foo::B; // changed + | ~~ error[E0423]: expected value, found enum `Foo` --> diag8.rs:10:13 | 10 | let _ = Foo.D(42); // no change | ^^^ | note: the enum is defined here --> diag8.rs:1:1 | 1 | / enum Foo { 2 | | A(u32), 3 | | B, 4 | | C { x: u32 }, 5 | | } | |_^ help: you might have meant to use the following enum variant | 10 | let _ = Foo::B.D(42); // no change | ~~~~~~ help: alternatively, the following enum variant is available | 10 | let _ = (Foo::A(/* fields */)).D(42); // no change | ~~~~~~~~~~~~~~~~~~~~~~ error[E0423]: expected value, found enum `Foo` --> diag8.rs:11:13 | 11 | let _ = Foo.D; // no change | ^^^ | note: the enum is defined here --> diag8.rs:1:1 | 1 | / enum Foo { 2 | | A(u32), 3 | | B, 4 | | C { x: u32 }, 5 | | } | |_^ help: you might have meant to use the following enum variant | 11 | let _ = Foo::B.D; // no change | ~~~~~~ help: alternatively, the following enum variant is available | 11 | let _ = (Foo::A(/* fields */)).D; // no change | ~~~~~~~~~~~~~~~~~~~~~~ error[E0423]: expected function, tuple struct or tuple variant, found enum `Foo` --> diag8.rs:12:13 | 12 | let _ = Foo(42); // no change | ^^^ help: try to construct one of the enum's variants: `Foo::A` | = help: you might have meant to construct the enum's non-tuple variant note: the enum is defined here --> diag8.rs:1:1 | 1 | / enum Foo { 2 | | A(u32), 3 | | B, 4 | | C { x: u32 }, 5 | | } | |_^ error: aborting due to 5 previous errors ``` </details> [^1]: or if it's a field expression and a tuple variant, that they meant to refer the variant constructor.
This commit is contained in:
commit
82279108e1
@ -8,7 +8,7 @@ use rustc_ast::ptr::P;
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use rustc_ast::visit::{FnCtxt, FnKind, LifetimeCtxt, Visitor, walk_ty};
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use rustc_ast::{
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self as ast, AssocItemKind, DUMMY_NODE_ID, Expr, ExprKind, GenericParam, GenericParamKind,
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Item, ItemKind, MethodCall, NodeId, Path, Ty, TyKind,
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Item, ItemKind, MethodCall, NodeId, Path, PathSegment, Ty, TyKind,
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};
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use rustc_ast_pretty::pprust::where_bound_predicate_to_string;
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use rustc_data_structures::fx::{FxHashSet, FxIndexSet};
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@ -1529,7 +1529,7 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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Applicability::MaybeIncorrect,
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);
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true
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} else if kind == DefKind::Struct
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} else if matches!(kind, DefKind::Struct | DefKind::TyAlias)
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&& let Some(lhs_source_span) = lhs_span.find_ancestor_inside(expr.span)
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&& let Ok(snippet) = this.r.tcx.sess.source_map().span_to_snippet(lhs_source_span)
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{
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@ -1566,7 +1566,7 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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}
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};
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let mut bad_struct_syntax_suggestion = |this: &mut Self, def_id: DefId| {
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let bad_struct_syntax_suggestion = |this: &mut Self, err: &mut Diag<'_>, def_id: DefId| {
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let (followed_by_brace, closing_brace) = this.followed_by_brace(span);
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match source {
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@ -1740,12 +1740,10 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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}
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}
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(
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Res::Def(kind @ (DefKind::Mod | DefKind::Trait), _),
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Res::Def(kind @ (DefKind::Mod | DefKind::Trait | DefKind::TyAlias), _),
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PathSource::Expr(Some(parent)),
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) => {
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if !path_sep(self, err, parent, kind) {
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return false;
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}
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) if path_sep(self, err, parent, kind) => {
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return true;
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}
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(
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Res::Def(DefKind::Enum, def_id),
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@ -1777,13 +1775,13 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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let (ctor_def, ctor_vis, fields) = if let Some(struct_ctor) = struct_ctor {
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if let PathSource::Expr(Some(parent)) = source {
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if let ExprKind::Field(..) | ExprKind::MethodCall(..) = parent.kind {
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bad_struct_syntax_suggestion(self, def_id);
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bad_struct_syntax_suggestion(self, err, def_id);
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return true;
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}
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}
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struct_ctor
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} else {
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bad_struct_syntax_suggestion(self, def_id);
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bad_struct_syntax_suggestion(self, err, def_id);
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return true;
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};
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@ -1861,7 +1859,7 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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err.span_label(span, "constructor is not visible here due to private fields");
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}
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(Res::Def(DefKind::Union | DefKind::Variant, def_id), _) if ns == ValueNS => {
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bad_struct_syntax_suggestion(self, def_id);
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bad_struct_syntax_suggestion(self, err, def_id);
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}
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(Res::Def(DefKind::Ctor(_, CtorKind::Const), def_id), _) if ns == ValueNS => {
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match source {
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@ -2471,31 +2469,73 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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def_id: DefId,
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span: Span,
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) {
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let Some(variants) = self.collect_enum_ctors(def_id) else {
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let Some(variant_ctors) = self.collect_enum_ctors(def_id) else {
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err.note("you might have meant to use one of the enum's variants");
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return;
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};
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let suggest_only_tuple_variants =
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matches!(source, PathSource::TupleStruct(..)) || source.is_call();
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if suggest_only_tuple_variants {
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// If the expression is a field-access or method-call, try to find a variant with the field/method name
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// that could have been intended, and suggest replacing the `.` with `::`.
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// Otherwise, suggest adding `::VariantName` after the enum;
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// and if the expression is call-like, only suggest tuple variants.
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let (suggest_path_sep_dot_span, suggest_only_tuple_variants) = match source {
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// `Type(a, b)` in a pattern, only suggest adding a tuple variant after `Type`.
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PathSource::TupleStruct(..) => (None, true),
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PathSource::Expr(Some(expr)) => match &expr.kind {
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// `Type(a, b)`, only suggest adding a tuple variant after `Type`.
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ExprKind::Call(..) => (None, true),
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// `Type.Foo(a, b)`, suggest replacing `.` -> `::` if variant `Foo` exists and is a tuple variant,
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// otherwise suggest adding a variant after `Type`.
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ExprKind::MethodCall(box MethodCall {
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receiver,
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span,
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seg: PathSegment { ident, .. },
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..
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}) => {
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let dot_span = receiver.span.between(*span);
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let found_tuple_variant = variant_ctors.iter().any(|(path, _, ctor_kind)| {
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*ctor_kind == CtorKind::Fn
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&& path.segments.last().is_some_and(|seg| seg.ident == *ident)
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});
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(found_tuple_variant.then_some(dot_span), false)
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}
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// `Type.Foo`, suggest replacing `.` -> `::` if variant `Foo` exists and is a unit or tuple variant,
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// otherwise suggest adding a variant after `Type`.
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ExprKind::Field(base, ident) => {
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let dot_span = base.span.between(ident.span);
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let found_tuple_or_unit_variant = variant_ctors.iter().any(|(path, ..)| {
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path.segments.last().is_some_and(|seg| seg.ident == *ident)
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});
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(found_tuple_or_unit_variant.then_some(dot_span), false)
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}
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_ => (None, false),
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},
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_ => (None, false),
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};
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if let Some(dot_span) = suggest_path_sep_dot_span {
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err.span_suggestion_verbose(
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dot_span,
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"use the path separator to refer to a variant",
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"::",
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Applicability::MaybeIncorrect,
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);
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} else if suggest_only_tuple_variants {
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// Suggest only tuple variants regardless of whether they have fields and do not
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// suggest path with added parentheses.
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let mut suggestable_variants = variants
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let mut suggestable_variants = variant_ctors
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.iter()
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.filter(|(.., kind)| *kind == CtorKind::Fn)
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.map(|(variant, ..)| path_names_to_string(variant))
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.collect::<Vec<_>>();
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suggestable_variants.sort();
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let non_suggestable_variant_count = variants.len() - suggestable_variants.len();
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let non_suggestable_variant_count = variant_ctors.len() - suggestable_variants.len();
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let source_msg = if source.is_call() {
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"to construct"
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} else if matches!(source, PathSource::TupleStruct(..)) {
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let source_msg = if matches!(source, PathSource::TupleStruct(..)) {
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"to match against"
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} else {
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unreachable!()
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"to construct"
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};
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if !suggestable_variants.is_empty() {
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@ -2514,7 +2554,7 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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}
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// If the enum has no tuple variants..
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if non_suggestable_variant_count == variants.len() {
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if non_suggestable_variant_count == variant_ctors.len() {
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err.help(format!("the enum has no tuple variants {source_msg}"));
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}
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@ -2537,7 +2577,7 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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}
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};
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let mut suggestable_variants = variants
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let mut suggestable_variants = variant_ctors
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.iter()
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.filter(|(_, def_id, kind)| !needs_placeholder(*def_id, *kind))
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.map(|(variant, _, kind)| (path_names_to_string(variant), kind))
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@ -2564,7 +2604,7 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
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);
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}
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let mut suggestable_variants_with_placeholders = variants
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let mut suggestable_variants_with_placeholders = variant_ctors
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.iter()
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.filter(|(_, def_id, kind)| needs_placeholder(*def_id, *kind))
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.map(|(variant, _, kind)| (path_names_to_string(variant), kind))
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|
@ -3619,7 +3619,6 @@ ui/resolve/issue-21221-1.rs
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ui/resolve/issue-21221-2.rs
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ui/resolve/issue-21221-3.rs
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ui/resolve/issue-21221-4.rs
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ui/resolve/issue-22692.rs
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ui/resolve/issue-2330.rs
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ui/resolve/issue-23305.rs
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ui/resolve/issue-2356.rs
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|
123
tests/ui/resolve/dot-notation-type-namespace-suggest-path-sep.rs
Normal file
123
tests/ui/resolve/dot-notation-type-namespace-suggest-path-sep.rs
Normal file
@ -0,0 +1,123 @@
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// see also https://github.com/rust-lang/rust/issues/22692
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type Alias = Vec<u32>;
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mod foo {
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fn bar() {}
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}
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fn main() {
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let _ = String.new();
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//~^ ERROR expected value, found struct `String`
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//~| HELP use the path separator
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let _ = String.default;
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//~^ ERROR expected value, found struct `String`
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//~| HELP use the path separator
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let _ = Vec::<()>.with_capacity(1);
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//~^ ERROR expected value, found struct `Vec`
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//~| HELP use the path separator
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let _ = Alias.new();
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//~^ ERROR expected value, found type alias `Alias`
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//~| HELP use the path separator
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let _ = Alias.default;
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//~^ ERROR expected value, found type alias `Alias`
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//~| HELP use the path separator
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let _ = foo.bar;
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//~^ ERROR expected value, found module `foo`
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//~| HELP use the path separator
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}
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macro_rules! Type {
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() => {
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::std::cell::Cell
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//~^ ERROR expected value, found struct `std::cell::Cell`
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//~| ERROR expected value, found struct `std::cell::Cell`
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//~| ERROR expected value, found struct `std::cell::Cell`
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};
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(alias) => {
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Alias
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//~^ ERROR expected value, found type alias `Alias`
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//~| ERROR expected value, found type alias `Alias`
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//~| ERROR expected value, found type alias `Alias`
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};
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}
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macro_rules! create {
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(type method) => {
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Vec.new()
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//~^ ERROR expected value, found struct `Vec`
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//~| HELP use the path separator
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};
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(type field) => {
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Vec.new
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//~^ ERROR expected value, found struct `Vec`
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//~| HELP use the path separator
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};
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(macro method) => {
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Type!().new(0)
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//~^ HELP use the path separator
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};
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(macro method alias) => {
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Type!(alias).new(0)
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//~^ HELP use the path separator
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};
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}
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macro_rules! check_ty {
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($Ty:ident) => {
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$Ty.foo
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//~^ ERROR expected value, found type alias `Alias`
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//~| HELP use the path separator
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};
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}
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macro_rules! check_ident {
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($Ident:ident) => {
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Alias.$Ident
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//~^ ERROR expected value, found type alias `Alias`
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//~| HELP use the path separator
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};
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}
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macro_rules! check_ty_ident {
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($Ty:ident, $Ident:ident) => {
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$Ty.$Ident
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//~^ ERROR expected value, found type alias `Alias`
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//~| HELP use the path separator
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};
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}
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fn interaction_with_macros() {
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//
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// Verify that we do not only suggest to replace `.` with `::` if the receiver is a
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// macro call but that we also correctly suggest to surround it with angle brackets.
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//
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Type!().get();
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//~^ HELP use the path separator
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|
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Type! {}.get;
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//~^ HELP use the path separator
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Type!(alias).get();
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//~^ HELP use the path separator
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|
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Type! {alias}.get;
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//~^ HELP use the path separator
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|
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//
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// Ensure that the suggestion is shown for expressions inside of macro definitions.
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//
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|
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let _ = create!(type method);
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let _ = create!(type field);
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let _ = create!(macro method);
|
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let _ = create!(macro method alias);
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|
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let _ = check_ty!(Alias);
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let _ = check_ident!(foo);
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let _ = check_ty_ident!(Alias, foo);
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}
|
@ -0,0 +1,251 @@
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error[E0423]: expected value, found struct `String`
|
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--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:10:13
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|
|
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LL | let _ = String.new();
|
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| ^^^^^^
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||||
|
|
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help: use the path separator to refer to an item
|
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|
|
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LL - let _ = String.new();
|
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LL + let _ = String::new();
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `String`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:14:13
|
||||
|
|
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LL | let _ = String.default;
|
||||
| ^^^^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = String.default;
|
||||
LL + let _ = String::default;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `Vec`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:18:13
|
||||
|
|
||||
LL | let _ = Vec::<()>.with_capacity(1);
|
||||
| ^^^^^^^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = Vec::<()>.with_capacity(1);
|
||||
LL + let _ = Vec::<()>::with_capacity(1);
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:22:13
|
||||
|
|
||||
LL | let _ = Alias.new();
|
||||
| ^^^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = Alias.new();
|
||||
LL + let _ = Alias::new();
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:26:13
|
||||
|
|
||||
LL | let _ = Alias.default;
|
||||
| ^^^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = Alias.default;
|
||||
LL + let _ = Alias::default;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found module `foo`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:30:13
|
||||
|
|
||||
LL | let _ = foo.bar;
|
||||
| ^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = foo.bar;
|
||||
LL + let _ = foo::bar;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `std::cell::Cell`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:37:9
|
||||
|
|
||||
LL | ::std::cell::Cell
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
...
|
||||
LL | Type!().get();
|
||||
| ------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type!().get();
|
||||
LL + <Type!()>::get();
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `std::cell::Cell`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:37:9
|
||||
|
|
||||
LL | ::std::cell::Cell
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
...
|
||||
LL | Type! {}.get;
|
||||
| -------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type! {}.get;
|
||||
LL + <Type! {}>::get;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:43:9
|
||||
|
|
||||
LL | Alias
|
||||
| ^^^^^
|
||||
...
|
||||
LL | Type!(alias).get();
|
||||
| ------------ in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type!(alias).get();
|
||||
LL + <Type!(alias)>::get();
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:43:9
|
||||
|
|
||||
LL | Alias
|
||||
| ^^^^^
|
||||
...
|
||||
LL | Type! {alias}.get;
|
||||
| ------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type! {alias}.get;
|
||||
LL + <Type! {alias}>::get;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `Vec`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:52:9
|
||||
|
|
||||
LL | Vec.new()
|
||||
| ^^^
|
||||
...
|
||||
LL | let _ = create!(type method);
|
||||
| -------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `create` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Vec.new()
|
||||
LL + Vec::new()
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `Vec`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:57:9
|
||||
|
|
||||
LL | Vec.new
|
||||
| ^^^
|
||||
...
|
||||
LL | let _ = create!(type field);
|
||||
| ------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `create` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Vec.new
|
||||
LL + Vec::new
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `std::cell::Cell`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:37:9
|
||||
|
|
||||
LL | ::std::cell::Cell
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
...
|
||||
LL | let _ = create!(macro method);
|
||||
| --------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` which comes from the expansion of the macro `create` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type!().new(0)
|
||||
LL + <Type!()>::new(0)
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:43:9
|
||||
|
|
||||
LL | Alias
|
||||
| ^^^^^
|
||||
...
|
||||
LL | let _ = create!(macro method alias);
|
||||
| --------------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` which comes from the expansion of the macro `create` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type!(alias).new(0)
|
||||
LL + <Type!(alias)>::new(0)
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:73:9
|
||||
|
|
||||
LL | $Ty.foo
|
||||
| ^^^
|
||||
...
|
||||
LL | let _ = check_ty!(Alias);
|
||||
| ---------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `check_ty` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - $Ty.foo
|
||||
LL + $Ty::foo
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:80:9
|
||||
|
|
||||
LL | Alias.$Ident
|
||||
| ^^^^^
|
||||
...
|
||||
LL | let _ = check_ident!(foo);
|
||||
| ----------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `check_ident` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Alias.$Ident
|
||||
LL + <Alias>::$Ident
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found type alias `Alias`
|
||||
--> $DIR/dot-notation-type-namespace-suggest-path-sep.rs:87:9
|
||||
|
|
||||
LL | $Ty.$Ident
|
||||
| ^^^
|
||||
...
|
||||
LL | let _ = check_ty_ident!(Alias, foo);
|
||||
| --------------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `check_ty_ident` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - $Ty.$Ident
|
||||
LL + <$Ty>::$Ident
|
||||
|
|
||||
|
||||
error: aborting due to 17 previous errors
|
||||
|
||||
For more information about this error, try `rustc --explain E0423`.
|
58
tests/ui/resolve/enum-expected-value-suggest-variants.rs
Normal file
58
tests/ui/resolve/enum-expected-value-suggest-variants.rs
Normal file
@ -0,0 +1,58 @@
|
||||
enum Foo {
|
||||
//~^ HELP consider importing this tuple variant
|
||||
A(u32),
|
||||
B(u32),
|
||||
}
|
||||
|
||||
enum Bar {
|
||||
C(u32),
|
||||
D(u32),
|
||||
E,
|
||||
F,
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let _: Foo = Foo(0);
|
||||
//~^ ERROR expected function
|
||||
//~| HELP try to construct one of the enum's variants
|
||||
|
||||
let _: Foo = Foo.A(0);
|
||||
//~^ ERROR expected value, found enum `Foo`
|
||||
//~| HELP use the path separator to refer to a variant
|
||||
|
||||
let _: Foo = Foo.Bad(0);
|
||||
//~^ ERROR expected value, found enum `Foo`
|
||||
//~| HELP the following enum variants are available
|
||||
|
||||
let _: Bar = Bar(0);
|
||||
//~^ ERROR expected function
|
||||
//~| HELP try to construct one of the enum's variants
|
||||
//~| HELP you might have meant to construct one of the enum's non-tuple variants
|
||||
|
||||
let _: Bar = Bar.C(0);
|
||||
//~^ ERROR expected value, found enum `Bar`
|
||||
//~| HELP use the path separator to refer to a variant
|
||||
|
||||
let _: Bar = Bar.E;
|
||||
//~^ ERROR expected value, found enum `Bar`
|
||||
//~| HELP use the path separator to refer to a variant
|
||||
|
||||
let _: Bar = Bar.Bad(0);
|
||||
//~^ ERROR expected value, found enum `Bar`
|
||||
//~| HELP you might have meant to use one of the following enum variants
|
||||
//~| HELP alternatively, the following enum variants are also available
|
||||
|
||||
let _: Bar = Bar.Bad;
|
||||
//~^ ERROR expected value, found enum `Bar`
|
||||
//~| HELP you might have meant to use one of the following enum variants
|
||||
//~| HELP alternatively, the following enum variants are also available
|
||||
|
||||
match Foo::A(42) {
|
||||
A(..) => {}
|
||||
//~^ ERROR cannot find tuple struct or tuple variant `A` in this scope
|
||||
Foo(..) => {}
|
||||
//~^ ERROR expected tuple struct or tuple variant
|
||||
//~| HELP try to match against one of the enum's variants
|
||||
_ => {}
|
||||
}
|
||||
}
|
234
tests/ui/resolve/enum-expected-value-suggest-variants.stderr
Normal file
234
tests/ui/resolve/enum-expected-value-suggest-variants.stderr
Normal file
@ -0,0 +1,234 @@
|
||||
error[E0423]: expected value, found enum `Foo`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:19:18
|
||||
|
|
||||
LL | let _: Foo = Foo.A(0);
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:1:1
|
||||
|
|
||||
LL | / enum Foo {
|
||||
LL | |
|
||||
LL | | A(u32),
|
||||
LL | | B(u32),
|
||||
LL | | }
|
||||
| |_^
|
||||
help: use the path separator to refer to a variant
|
||||
|
|
||||
LL - let _: Foo = Foo.A(0);
|
||||
LL + let _: Foo = Foo::A(0);
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found enum `Foo`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:23:18
|
||||
|
|
||||
LL | let _: Foo = Foo.Bad(0);
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:1:1
|
||||
|
|
||||
LL | / enum Foo {
|
||||
LL | |
|
||||
LL | | A(u32),
|
||||
LL | | B(u32),
|
||||
LL | | }
|
||||
| |_^
|
||||
help: the following enum variants are available
|
||||
|
|
||||
LL - let _: Foo = Foo.Bad(0);
|
||||
LL + let _: Foo = (Foo::A(/* fields */)).Bad(0);
|
||||
|
|
||||
LL - let _: Foo = Foo.Bad(0);
|
||||
LL + let _: Foo = (Foo::B(/* fields */)).Bad(0);
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found enum `Bar`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:32:18
|
||||
|
|
||||
LL | let _: Bar = Bar.C(0);
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:7:1
|
||||
|
|
||||
LL | / enum Bar {
|
||||
LL | | C(u32),
|
||||
LL | | D(u32),
|
||||
LL | | E,
|
||||
LL | | F,
|
||||
LL | | }
|
||||
| |_^
|
||||
help: use the path separator to refer to a variant
|
||||
|
|
||||
LL - let _: Bar = Bar.C(0);
|
||||
LL + let _: Bar = Bar::C(0);
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found enum `Bar`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:36:18
|
||||
|
|
||||
LL | let _: Bar = Bar.E;
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:7:1
|
||||
|
|
||||
LL | / enum Bar {
|
||||
LL | | C(u32),
|
||||
LL | | D(u32),
|
||||
LL | | E,
|
||||
LL | | F,
|
||||
LL | | }
|
||||
| |_^
|
||||
help: use the path separator to refer to a variant
|
||||
|
|
||||
LL - let _: Bar = Bar.E;
|
||||
LL + let _: Bar = Bar::E;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found enum `Bar`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:40:18
|
||||
|
|
||||
LL | let _: Bar = Bar.Bad(0);
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:7:1
|
||||
|
|
||||
LL | / enum Bar {
|
||||
LL | | C(u32),
|
||||
LL | | D(u32),
|
||||
LL | | E,
|
||||
LL | | F,
|
||||
LL | | }
|
||||
| |_^
|
||||
help: you might have meant to use one of the following enum variants
|
||||
|
|
||||
LL | let _: Bar = Bar::E.Bad(0);
|
||||
| +++
|
||||
LL | let _: Bar = Bar::F.Bad(0);
|
||||
| +++
|
||||
help: alternatively, the following enum variants are also available
|
||||
|
|
||||
LL - let _: Bar = Bar.Bad(0);
|
||||
LL + let _: Bar = (Bar::C(/* fields */)).Bad(0);
|
||||
|
|
||||
LL - let _: Bar = Bar.Bad(0);
|
||||
LL + let _: Bar = (Bar::D(/* fields */)).Bad(0);
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found enum `Bar`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:45:18
|
||||
|
|
||||
LL | let _: Bar = Bar.Bad;
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:7:1
|
||||
|
|
||||
LL | / enum Bar {
|
||||
LL | | C(u32),
|
||||
LL | | D(u32),
|
||||
LL | | E,
|
||||
LL | | F,
|
||||
LL | | }
|
||||
| |_^
|
||||
help: you might have meant to use one of the following enum variants
|
||||
|
|
||||
LL | let _: Bar = Bar::E.Bad;
|
||||
| +++
|
||||
LL | let _: Bar = Bar::F.Bad;
|
||||
| +++
|
||||
help: alternatively, the following enum variants are also available
|
||||
|
|
||||
LL - let _: Bar = Bar.Bad;
|
||||
LL + let _: Bar = (Bar::C(/* fields */)).Bad;
|
||||
|
|
||||
LL - let _: Bar = Bar.Bad;
|
||||
LL + let _: Bar = (Bar::D(/* fields */)).Bad;
|
||||
|
|
||||
|
||||
error[E0531]: cannot find tuple struct or tuple variant `A` in this scope
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:51:9
|
||||
|
|
||||
LL | A(..) => {}
|
||||
| ^ not found in this scope
|
||||
|
|
||||
help: consider importing this tuple variant
|
||||
|
|
||||
LL + use Foo::A;
|
||||
|
|
||||
|
||||
error[E0532]: expected tuple struct or tuple variant, found enum `Foo`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:53:9
|
||||
|
|
||||
LL | Foo(..) => {}
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:1:1
|
||||
|
|
||||
LL | / enum Foo {
|
||||
LL | |
|
||||
LL | | A(u32),
|
||||
LL | | B(u32),
|
||||
LL | | }
|
||||
| |_^
|
||||
help: try to match against one of the enum's variants
|
||||
|
|
||||
LL | Foo::A(..) => {}
|
||||
| +++
|
||||
LL | Foo::B(..) => {}
|
||||
| +++
|
||||
|
||||
error[E0423]: expected function, tuple struct or tuple variant, found enum `Foo`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:15:18
|
||||
|
|
||||
LL | let _: Foo = Foo(0);
|
||||
| ^^^
|
||||
|
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:1:1
|
||||
|
|
||||
LL | / enum Foo {
|
||||
LL | |
|
||||
LL | | A(u32),
|
||||
LL | | B(u32),
|
||||
LL | | }
|
||||
| |_^
|
||||
help: try to construct one of the enum's variants
|
||||
|
|
||||
LL | let _: Foo = Foo::A(0);
|
||||
| +++
|
||||
LL | let _: Foo = Foo::B(0);
|
||||
| +++
|
||||
|
||||
error[E0423]: expected function, tuple struct or tuple variant, found enum `Bar`
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:27:18
|
||||
|
|
||||
LL | let _: Bar = Bar(0);
|
||||
| ^^^
|
||||
|
|
||||
= help: you might have meant to construct one of the enum's non-tuple variants
|
||||
note: the enum is defined here
|
||||
--> $DIR/enum-expected-value-suggest-variants.rs:7:1
|
||||
|
|
||||
LL | / enum Bar {
|
||||
LL | | C(u32),
|
||||
LL | | D(u32),
|
||||
LL | | E,
|
||||
LL | | F,
|
||||
LL | | }
|
||||
| |_^
|
||||
help: try to construct one of the enum's variants
|
||||
|
|
||||
LL | let _: Bar = Bar::C(0);
|
||||
| +++
|
||||
LL | let _: Bar = Bar::D(0);
|
||||
| +++
|
||||
|
||||
error: aborting due to 10 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0423, E0531, E0532.
|
||||
For more information about an error, try `rustc --explain E0423`.
|
@ -1,60 +0,0 @@
|
||||
fn main() {
|
||||
let _ = String.new();
|
||||
//~^ ERROR expected value, found struct `String`
|
||||
//~| HELP use the path separator
|
||||
|
||||
let _ = String.default;
|
||||
//~^ ERROR expected value, found struct `String`
|
||||
//~| HELP use the path separator
|
||||
|
||||
let _ = Vec::<()>.with_capacity(1);
|
||||
//~^ ERROR expected value, found struct `Vec`
|
||||
//~| HELP use the path separator
|
||||
}
|
||||
|
||||
macro_rules! Type {
|
||||
() => {
|
||||
::std::cell::Cell
|
||||
//~^ ERROR expected value, found struct `std::cell::Cell`
|
||||
//~| ERROR expected value, found struct `std::cell::Cell`
|
||||
//~| ERROR expected value, found struct `std::cell::Cell`
|
||||
};
|
||||
}
|
||||
|
||||
macro_rules! create {
|
||||
(type method) => {
|
||||
Vec.new()
|
||||
//~^ ERROR expected value, found struct `Vec`
|
||||
//~| HELP use the path separator
|
||||
};
|
||||
(type field) => {
|
||||
Vec.new
|
||||
//~^ ERROR expected value, found struct `Vec`
|
||||
//~| HELP use the path separator
|
||||
};
|
||||
(macro method) => {
|
||||
Type!().new(0)
|
||||
//~^ HELP use the path separator
|
||||
};
|
||||
}
|
||||
|
||||
fn interaction_with_macros() {
|
||||
//
|
||||
// Verify that we do not only suggest to replace `.` with `::` if the receiver is a
|
||||
// macro call but that we also correctly suggest to surround it with angle brackets.
|
||||
//
|
||||
|
||||
Type!().get();
|
||||
//~^ HELP use the path separator
|
||||
|
||||
Type! {}.get;
|
||||
//~^ HELP use the path separator
|
||||
|
||||
//
|
||||
// Ensure that the suggestion is shown for expressions inside of macro definitions.
|
||||
//
|
||||
|
||||
let _ = create!(type method);
|
||||
let _ = create!(type field);
|
||||
let _ = create!(macro method);
|
||||
}
|
@ -1,119 +0,0 @@
|
||||
error[E0423]: expected value, found struct `String`
|
||||
--> $DIR/issue-22692.rs:2:13
|
||||
|
|
||||
LL | let _ = String.new();
|
||||
| ^^^^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = String.new();
|
||||
LL + let _ = String::new();
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `String`
|
||||
--> $DIR/issue-22692.rs:6:13
|
||||
|
|
||||
LL | let _ = String.default;
|
||||
| ^^^^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = String.default;
|
||||
LL + let _ = String::default;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `Vec`
|
||||
--> $DIR/issue-22692.rs:10:13
|
||||
|
|
||||
LL | let _ = Vec::<()>.with_capacity(1);
|
||||
| ^^^^^^^^^
|
||||
|
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - let _ = Vec::<()>.with_capacity(1);
|
||||
LL + let _ = Vec::<()>::with_capacity(1);
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `std::cell::Cell`
|
||||
--> $DIR/issue-22692.rs:17:9
|
||||
|
|
||||
LL | ::std::cell::Cell
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
...
|
||||
LL | Type!().get();
|
||||
| ------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type!().get();
|
||||
LL + <Type!()>::get();
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `std::cell::Cell`
|
||||
--> $DIR/issue-22692.rs:17:9
|
||||
|
|
||||
LL | ::std::cell::Cell
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
...
|
||||
LL | Type! {}.get;
|
||||
| -------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type! {}.get;
|
||||
LL + <Type! {}>::get;
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `Vec`
|
||||
--> $DIR/issue-22692.rs:26:9
|
||||
|
|
||||
LL | Vec.new()
|
||||
| ^^^
|
||||
...
|
||||
LL | let _ = create!(type method);
|
||||
| -------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `create` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Vec.new()
|
||||
LL + Vec::new()
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `Vec`
|
||||
--> $DIR/issue-22692.rs:31:9
|
||||
|
|
||||
LL | Vec.new
|
||||
| ^^^
|
||||
...
|
||||
LL | let _ = create!(type field);
|
||||
| ------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `create` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Vec.new
|
||||
LL + Vec::new
|
||||
|
|
||||
|
||||
error[E0423]: expected value, found struct `std::cell::Cell`
|
||||
--> $DIR/issue-22692.rs:17:9
|
||||
|
|
||||
LL | ::std::cell::Cell
|
||||
| ^^^^^^^^^^^^^^^^^
|
||||
...
|
||||
LL | let _ = create!(macro method);
|
||||
| --------------------- in this macro invocation
|
||||
|
|
||||
= note: this error originates in the macro `Type` which comes from the expansion of the macro `create` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
help: use the path separator to refer to an item
|
||||
|
|
||||
LL - Type!().new(0)
|
||||
LL + <Type!()>::new(0)
|
||||
|
|
||||
|
||||
error: aborting due to 8 previous errors
|
||||
|
||||
For more information about this error, try `rustc --explain E0423`.
|
Loading…
x
Reference in New Issue
Block a user