Struct rustc_resolve::late::DiagnosticMetadata

struct DiagnosticMetadata<'ast> {
    current_trait_assoc_items: Option<&'ast [P<AssocItem>]>,
    current_self_type: Option<Ty>,
    current_self_item: Option<NodeId>,
    current_item: Option<&'ast Item>,
    currently_processing_generics: bool,
    current_function: Option<(FnKind<'ast>, Span)>,
    unused_labels: FxHashMap<NodeId, Span>,
    current_type_ascription: Vec<Span>,
    current_let_binding: Option<(Span, Option<Span>, Option<Span>)>,
    in_if_condition: Option<&'ast Expr>,
    current_trait_object: Option<&'ast [GenericBound]>,
    current_where_predicate: Option<&'ast WherePredicate>,
}

Fields

current_trait_assoc_items: Option<&'ast [P<AssocItem>]>

The current trait’s associated items’ ident, used for diagnostic suggestions.

current_self_type: Option<Ty>

The current self type if inside an impl (used for better errors).

current_self_item: Option<NodeId>

The current self item if inside an ADT (used for better errors).

current_item: Option<&'ast Item>

The current trait (used to suggest).

currently_processing_generics: bool

When processing generics and encountering a type not found, suggest introducing a type param.

current_function: Option<(FnKind<'ast>, Span)>

The current enclosing (non-closure) function (used for better errors).

unused_labels: FxHashMap<NodeId, Span>

A list of labels as of yet unused. Labels will be removed from this map when they are used (in a break or continue statement)

current_type_ascription: Vec<Span>

Only used for better errors on fn(): fn().

current_let_binding: Option<(Span, Option<Span>, Option<Span>)>

Only used for better errors on let <pat>: <expr, not type>;.

in_if_condition: Option<&'ast Expr>

Used to detect possible if let written without let and to provide structured suggestion.

current_trait_object: Option<&'ast [GenericBound]>

If we are currently in a trait object definition. Used to point at the bounds when encountering a struct or enum.

current_where_predicate: Option<&'ast WherePredicate>

Given where <T as Bar>::Baz: String, suggest where T: Bar<Baz = String>.

Trait Implementations

impl<'ast> Default for DiagnosticMetadata<'ast>

fn default() -> DiagnosticMetadata<'ast>

Returns the “default value” for a type.