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

    pub struct Ident(_);

An identifier (`ident`).

## Implementations

### `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 (including keywords, e.g. `self` or `fn`). 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` 1.47.0[src]

Same as `Ident::new`, but creates a raw identifier (`r#ident`). The `string` argument be a valid identifier permitted by the language (including keywords, e.g. `fn`). Keywords which are usable in path segments (e.g. `self`, `super`) are not supported, and will cause a panic.

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

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

#### `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]

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

Returns a copy of the value. Read more

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

Performs copy-assignment from `source`. Read more

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

#### `pub 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.

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

Formats the value using the given formatter. Read more

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

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

Performs the conversion.

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

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

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

## Auto Trait Implementations

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

### `impl !Send for Ident`[src]

### `impl !Sync for Ident`[src]

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

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

## Blanket Implementations

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

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

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

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

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

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

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

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

Performs the conversion.

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

#### `pub 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.

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

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

#### `pub 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]

#### `pub 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 = Infallible`

The type returned in the event of a conversion error.

#### `pub 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.

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

Performs the conversion.