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) -> Ident1.47.0[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 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]

impl Debug for Ident[src]

impl Display for Ident[src]

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

impl From<Ident> for TokenTree[src]

impl ToString for Ident1.15.0[src]

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
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

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

impl<T> ToString for T where
    T: Display + ?Sized
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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.

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.