pub enum ItemKind {
Show 17 variants ExternCrate(Option<Symbol>), Use(UseTree), Static(P<Ty>, MutabilityOption<P<Expr>>), Const(DefaultnessP<Ty>, Option<P<Expr>>), Fn(Box<Fn>), Mod(UnsafeModKind), ForeignMod(ForeignMod), GlobalAsm(Box<InlineAsm>), TyAlias(Box<TyAlias>), Enum(EnumDefGenerics), Struct(VariantDataGenerics), Union(VariantDataGenerics), Trait(Box<Trait>), TraitAlias(GenericsGenericBounds), Impl(Box<Impl>), MacCall(MacCall), MacroDef(MacroDef),
}

Variants

ExternCrate(Option<Symbol>)

An extern crate item, with the optional original crate name if the crate was renamed.

E.g., extern crate foo or extern crate foo_bar as foo.

Use(UseTree)

A use declaration item (use).

E.g., use foo;, use foo::bar; or use foo::bar as FooBar;.

Static(P<Ty>, MutabilityOption<P<Expr>>)

A static item (static).

E.g., static FOO: i32 = 42; or static FOO: &'static str = "bar";.

Const(DefaultnessP<Ty>, Option<P<Expr>>)

A constant item (const).

E.g., const FOO: i32 = 42;.

Fn(Box<Fn>)

A function declaration (fn).

E.g., fn foo(bar: usize) -> usize { .. }.

Mod(UnsafeModKind)

A module declaration (mod).

E.g., mod foo; or mod foo { .. }. unsafe keyword on modules is accepted syntactically for macro DSLs, but not semantically by Rust.

ForeignMod(ForeignMod)

An external module (extern).

E.g., extern {} or extern "C" {}.

GlobalAsm(Box<InlineAsm>)

Module-level inline assembly (from global_asm!()).

TyAlias(Box<TyAlias>)

A type alias (type).

E.g., type Foo = Bar<u8>;.

Enum(EnumDefGenerics)

An enum definition (enum).

E.g., enum Foo<A, B> { C<A>, D<B> }.

Struct(VariantDataGenerics)

A struct definition (struct).

E.g., struct Foo<A> { x: A }.

Union(VariantDataGenerics)

A union definition (union).

E.g., union Foo<A, B> { x: A, y: B }.

Trait(Box<Trait>)

A trait declaration (trait).

E.g., trait Foo { .. }, trait Foo<T> { .. } or auto trait Foo {}.

TraitAlias(GenericsGenericBounds)

Trait alias

E.g., trait Foo = Bar + Quux;.

Impl(Box<Impl>)

An implementation.

E.g., impl<A> Foo<A> { .. } or impl<A> Trait for Foo<A> { .. }.

MacCall(MacCall)

A macro invocation.

E.g., foo!(..).

MacroDef(MacroDef)

A macro definition.

Implementations

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Converts to this type from the input type.

Converts to this type from the input type.

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.

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

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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: 112 bytes

Size for each variant:

  • ExternCrate: 7 bytes
  • Use: 87 bytes
  • Static: 23 bytes
  • Const: 31 bytes
  • Fn: 15 bytes
  • Mod: 63 bytes
  • ForeignMod: 71 bytes
  • GlobalAsm: 15 bytes
  • TyAlias: 15 bytes
  • Enum: 103 bytes
  • Struct: 111 bytes
  • Union: 111 bytes
  • Trait: 15 bytes
  • TraitAlias: 103 bytes
  • Impl: 15 bytes
  • MacCall: 71 bytes
  • MacroDef: 23 bytes