ItemKind in rustdoc_json_types - Rust
Description: The fundamental kind of an item. Unlike `ItemEnum`, this does not carry any additional info.

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## ItemKind

# Enum ItemKind

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    pub enum ItemKind {
    Show 24 variants    Module,
        ExternCrate,
        Use,
        Struct,
        StructField,
        Union,
        Enum,
        Variant,
        Function,
        TypeAlias,
        Constant,
        Trait,
        TraitAlias,
        Impl,
        Static,
        ExternType,
        Macro,
        ProcAttribute,
        ProcDerive,
        AssocConst,
        AssocType,
        Primitive,
        Keyword,
        Attribute,
    }

Expand description

The fundamental kind of an item. Unlike `ItemEnum`, this does not carry any additional info.

Part of `ItemSummary`.

## Variants§

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### Module

A module declaration, e.g. `mod foo;` or `mod foo {}`

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### ExternCrate

A crate imported via the `extern crate` syntax.

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### Use

An import of 1 or more items into scope, using the `use` keyword.

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### Struct

A `struct` declaration.

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### StructField

A field of a struct.

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### Union

A `union` declaration.

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### Enum

An `enum` declaration.

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### Variant

A variant of a enum.

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### Function

A function declaration, e.g. `fn f() {}`

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### TypeAlias

A type alias declaration, e.g. `type Pig = std::borrow::Cow<'static, str>;`

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### Constant

The declaration of a constant, e.g. `const GREETING: &str = "Hi :3";`

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### Trait

A `trait` declaration.

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### TraitAlias

A trait alias declaration, e.g. `trait Int = Add + Sub + Mul + Div;`

See the tracking issue

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### Impl

An `impl` block.

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### Static

A `static` declaration.

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### ExternType

`type`s from an `extern` block.

See the tracking issue

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### Macro

A macro declaration.

Corresponds to either `ItemEnum::Macro(_)` or `ItemEnum::ProcMacro(ProcMacro { kind: MacroKind::Bang })`

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### ProcAttribute

A procedural macro attribute.

Corresponds to `ItemEnum::ProcMacro(ProcMacro { kind: MacroKind::Attr })`

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### ProcDerive

A procedural macro usable in the `#[derive()]` attribute.

Corresponds to `ItemEnum::ProcMacro(ProcMacro { kind: MacroKind::Derive })`

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### AssocConst

An associated constant of a trait or a type.

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### AssocType

An associated type of a trait or a type.

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### Primitive

A primitive type, e.g. `u32`.

`Item`s of this kind only come from the core library.

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### Keyword

A keyword declaration.

`Item`s of this kind only come from the come library and exist solely to carry documentation for the respective keywords.

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### Attribute

An attribute declaration.

`Item`s of this kind only come from the core library and exist solely to carry documentation for the respective builtin attributes.

## Trait Implementations§

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### impl Clone for ItemKind

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#### fn clone(&self) -> ItemKind

Returns a duplicate of the value. Read more
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#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
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### impl Debug for ItemKind

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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### impl<'de> Deserialize<'de> for ItemKind

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#### fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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### impl Hash for ItemKind

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#### fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given `Hasher`. Read more
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#### fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given `Hasher`. Read more
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### impl PartialEq for ItemKind

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#### fn eq(&self, other: &ItemKind) -> bool

Tests for `self` and `other` values to be equal, and is used by `==`.
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#### fn ne(&self, other: &Rhs) -> bool

Tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl Serialize for ItemKind

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#### fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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### impl Copy for ItemKind

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### impl Eq for ItemKind

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### impl StructuralPartialEq for ItemKind

## Auto Trait Implementations§

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### impl Freeze for ItemKind

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### impl RefUnwindSafe for ItemKind

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### impl Send for ItemKind

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### impl Sync for ItemKind

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### impl Unpin for ItemKind

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### impl UnsafeUnpin for ItemKind

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### impl UnwindSafe for ItemKind

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

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

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### impl<T> ToOwned for T
where T: Clone,

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#### type Owned = T

The resulting type after obtaining ownership.
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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

## 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: 1 byte

Size for each variant:

- `Module`: 0 bytes
- `ExternCrate`: 0 bytes
- `Use`: 0 bytes
- `Struct`: 0 bytes
- `StructField`: 0 bytes
- `Union`: 0 bytes
- `Enum`: 0 bytes
- `Variant`: 0 bytes
- `Function`: 0 bytes
- `TypeAlias`: 0 bytes
- `Constant`: 0 bytes
- `Trait`: 0 bytes
- `TraitAlias`: 0 bytes
- `Impl`: 0 bytes
- `Static`: 0 bytes
- `ExternType`: 0 bytes
- `Macro`: 0 bytes
- `ProcAttribute`: 0 bytes
- `ProcDerive`: 0 bytes
- `AssocConst`: 0 bytes
- `AssocType`: 0 bytes
- `Primitive`: 0 bytes
- `Keyword`: 0 bytes
- `Attribute`: 0 bytes