# 1.29.0[−][src]Struct proc_macro::Ident

    pub struct Ident(_);

An identifier (`ident`).

## Methods

### `impl Ident`[src]

#### `pub fn new(string: &str, span: Span) -> Ident`[src]

Creates a new `Ident` with the given `string` as well as the specified `span`. The `string` argument must be a valid identifier permitted by the language, otherwise the function will panic.

Note that `span`, currently in rustc, configures the hygiene information for this identifier.

As of this time `Span::call_site()` explicitly opts-in to "call-site" hygiene meaning that identifiers created with this span will be resolved as if they were written directly at the location of the macro call, and other code at the macro call site will be able to refer to them as well.

Later spans like `Span::def_site()` will allow to opt-in to "definition-site" hygiene meaning that identifiers created with this span will be resolved at the location of the macro definition and other code at the macro call site will not be able to refer to them.

Due to the current importance of hygiene this constructor, unlike other tokens, requires a `Span` to be specified at construction.

#### `pub fn new_raw(string: &str, span: Span) -> Ident`[src]

🔬 This is a nightly-only experimental API. (`proc_macro_raw_ident` #54723)

Same as `Ident::new`, but creates a raw identifier (`r#ident`).

#### `pub fn span(&self) -> Span`[src]

Returns the span of this `Ident`, encompassing the entire string returned by `as_str`.

#### `pub fn set_span(&mut self, span: Span)`[src]

Configures the span of this `Ident`, possibly changing its hygiene context.

## Trait Implementations

### `impl Clone for Ident`[src]

#### `fn clone(&self) -> Ident`[src]

Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`1.0.0[src]

Performs copy-assignment from `source`. Read more

### `impl Debug for Ident`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl Display for Ident`[src]

Prints the identifier as a string that should be losslessly convertible back into the same identifier.

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl From<Ident> for TokenTree`[src]

#### `fn from(g: Ident) -> TokenTree`[src]

Performs the conversion.

### `impl ToString for Ident` 1.15.0[src]

#### `fn to_string(&self) -> String`[src]

Converts the given value to a `String`. Read more

## Auto Trait Implementations

### `impl RefUnwindSafe for Ident`

### `impl !Send for Ident`

### `impl !Sync for Ident`

### `impl Unpin for Ident`

### `impl UnwindSafe for Ident`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T`[src]

#### `fn from(t: T) -> T`[src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U`[src]

Performs the conversion.

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `fn to_owned(&self) -> T`[src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `fn clone_into(&self, target: &mut T)`[src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into` #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `impl<T> ToString for T where
T: Display + ?Sized,` [src]

#### `default fn to_string(&self) -> String`[src]

Converts the given value to a `String`. Read more

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = !`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

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

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.