Struct rustc_span::symbol::Ident

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pub struct Ident {
    pub name: Symbol,
    pub span: Span,
}

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§name: Symbol§span: Span

Implementations§

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impl Ident

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pub const fn new(name: Symbol, span: Span) -> Ident

Constructs a new identifier from a symbol and a span.

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pub const fn with_dummy_span(name: Symbol) -> Ident

Constructs a new identifier with a dummy span.

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pub fn empty() -> Ident

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pub fn from_str(string: &str) -> Ident

Maps a string to an identifier with a dummy span.

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pub fn from_str_and_span(string: &str, span: Span) -> Ident

Maps a string and a span to an identifier.

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pub fn with_span_pos(self, span: Span) -> Ident

Replaces lo and hi with those from span, but keep hygiene context.

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pub fn without_first_quote(self) -> Ident

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pub fn normalize_to_macros_2_0(self) -> Ident

“Normalize” ident for use in comparisons using “item hygiene”. Identifiers with same string value become same if they came from the same macro 2.0 macro (e.g., macro item, but not macro_rules item) and stay different if they came from different macro 2.0 macros. Technically, this operation strips all non-opaque marks from ident’s syntactic context.

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pub fn normalize_to_macro_rules(self) -> Ident

“Normalize” ident for use in comparisons using “local variable hygiene”. Identifiers with same string value become same if they came from the same non-transparent macro (e.g., macro or macro_rules! items) and stay different if they came from different non-transparent macros. Technically, this operation strips all transparent marks from ident’s syntactic context.

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pub fn as_str(&self) -> &str

Access the underlying string. This is a slowish operation because it requires locking the symbol interner.

Note that the lifetime of the return value is a lie. See Symbol::as_str() for details.

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impl Ident

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pub fn is_special(self) -> bool

Returns true for reserved identifiers used internally for elided lifetimes, unnamed method parameters, crate root module, error recovery etc.

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pub fn is_used_keyword(self) -> bool

Returns true if the token is a keyword used in the language.

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pub fn is_unused_keyword(self) -> bool

Returns true if the token is a keyword reserved for possible future use.

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pub fn is_reserved(self) -> bool

Returns true if the token is either a special identifier or a keyword.

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pub fn is_path_segment_keyword(self) -> bool

A keyword or reserved identifier that can be used as a path segment.

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pub fn is_raw_guess(self) -> bool

We see this identifier in a normal identifier position, like variable name or a type. How was it written originally? Did it use the raw form? Let’s try to guess.

Trait Implementations§

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impl Clone for Ident

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fn clone(&self) -> Ident

Returns a copy 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 Ident

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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<__D: Decoder> Decodable<__D> for Ident

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fn decode(__decoder: &mut __D) -> Self

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impl Display for Ident

This implementation is supposed to be used in error messages, so it’s expected to be identical to printing the original identifier token written in source code (token_to_string), except that AST identifiers don’t keep the rawness flag, so we have to guess it.

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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<__E: Encoder> Encodable<__E> for Ident

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fn encode(&self, __encoder: &mut __E)

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impl Hash for Ident

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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<__CTX> HashStable<__CTX> for Identwhere __CTX: HashStableContext,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl PartialEq<Ident> for Ident

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fn eq(&self, rhs: &Self) -> bool

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for Ident

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impl Eq for Ident

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impl StructuralEq for Ident

Auto Trait Implementations§

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impl RefUnwindSafe for Ident

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impl !Send for Ident

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impl !Sync for Ident

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impl Unpin for Ident

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impl UnwindSafe for Ident

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> 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 Twhere 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 Twhere 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 Twhere T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere 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 Twhere 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.

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: 12 bytes