pub enum ImportKind<'a> {
    Single {
        source: Ident,
        target: Ident,
        source_bindings: PerNS<Cell<Result<&'a NameBinding<'a>, Determinacy>>>,
        target_bindings: PerNS<Cell<Option<&'a NameBinding<'a>>>>,
        type_ns_only: bool,
        nested: bool,
        id: NodeId,
    },
    Glob {
        is_prelude: bool,
        max_vis: Cell<Option<Visibility>>,
        id: NodeId,
    },
    ExternCrate {
        source: Option<Symbol>,
        target: Ident,
        id: NodeId,
    },
    MacroUse,
    MacroExport,
}
Expand description

Contains data for specific kinds of imports.

Variants§

§

Single

Fields

§source: Ident

source in use prefix::source as target.

§target: Ident

target in use prefix::source as target.

§source_bindings: PerNS<Cell<Result<&'a NameBinding<'a>, Determinacy>>>

Bindings to which source refers to.

§target_bindings: PerNS<Cell<Option<&'a NameBinding<'a>>>>

Bindings introduced by target.

§type_ns_only: bool

true for ...::{self [as target]} imports, false otherwise.

§nested: bool

Did this import result from a nested import? ie. use foo::{bar, baz};

§id: NodeId

The ID of the UseTree that imported this Import.

In the case where the Import was expanded from a “nested” use tree, this id is the ID of the leaf tree. For example:

use foo::bar::{a, b}

If this is the import for foo::bar::a, we would have the ID of the UseTree for a in this field.

§

Glob

Fields

§is_prelude: bool
§

ExternCrate

Fields

§source: Option<Symbol>
§target: Ident
§

MacroUse

§

MacroExport

Trait Implementations§

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more

Manually implement Debug for ImportKind because the source/target_bindings contain Cells which can introduce infinite loops while printing.

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 104 bytes

Size for each variant:

  • Single: 103 bytes
  • Glob: 11 bytes
  • ExternCrate: 23 bytes
  • MacroUse: 0 bytes
  • MacroExport: 0 bytes