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IdentOrIndex

Enum IdentOrIndex 

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pub enum IdentOrIndex {
    Ident {
        ident: Ident,
        attributes: Vec<Attribute>,
    },
    Index {
        index: usize,
        span: Span,
        attributes: Vec<Attribute>,
    },
}
Expand description

Reference to an enum variant’s field. Either by index or by ident.

enum Foo {
    Bar(u32), // will be IdentOrIndex::Index { index: 0, .. }
    Baz {
        a: u32, // will be IdentOrIndex::Ident { ident: "a", .. }
    },
}

Variants§

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Ident

The variant is a named field

Fields

§ident: Ident

The name of the field

§attributes: Vec<Attribute>

The attributes of the field

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Index

The variant is an unnamed field

Fields

§index: usize

The field index

§span: Span

The span of the field type

§attributes: Vec<Attribute>

The attributes of this field

Implementations§

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impl IdentOrIndex

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pub fn unwrap_ident(&self) -> Ident

Get the ident. Will panic if this is an IdentOrIndex::Index

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pub fn to_token_tree_with_prefix(&self, prefix: &str) -> TokenTree

Convert this ident into a TokenTree. If this is an Index, will return prefix + index instead.

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pub fn to_string_with_prefix(&self, prefix: &str) -> String

Return either the index or the ident of this field with a fixed prefix. The prefix will always be added.

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pub fn attributes(&self) -> &Vec<Attribute>

Returns the attributes of this field.

Trait Implementations§

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impl Clone for IdentOrIndex

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fn clone(&self) -> IdentOrIndex

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 IdentOrIndex

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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 Display for IdentOrIndex

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. 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.