[][src]Struct syntax::source_map::symbol::Symbol

pub struct Symbol(SymbolIndex);
⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

An interned string.

Internally, a Symbol is implemented as an index, and all operations (including hashing, equality, and ordering) operate on that index. The use of rustc_index::newtype_index! means that Option<Symbol> only takes up 4 bytes, because rustc_index::newtype_index! reserves the last 256 values for tagging purposes.

Note that Symbol cannot directly be a rustc_index::newtype_index! because it implements fmt::Debug, Encodable, and Decodable in special ways.

Methods

impl Symbol[src]

pub fn intern(string: &str) -> Symbol[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

Maps a string to its interned representation.

pub fn with<F, R>(self, f: F) -> R where
    F: FnOnce(&str) -> R, 
[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

Access the symbol's chars. This is a slowish operation because it requires locking the symbol interner.

pub fn as_str(self) -> SymbolStr[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

Convert to a SymbolStr. This is a slowish operation because it requires locking the symbol interner.

pub fn as_u32(self) -> u32[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

impl Symbol[src]

pub fn is_doc_keyword(self) -> bool[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

Used for sanity checking rustdoc keyword sections.

pub fn is_path_segment_keyword(self) -> bool[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

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

pub fn is_bool_lit(self) -> bool[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

Returns true if the symbol is true or false.

pub fn can_be_raw(self) -> bool[src]

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

This symbol can be a raw identifier.

Trait Implementations

impl<CTX> HashStable<CTX> for Symbol[src]

impl Eq for Symbol[src]

impl Encodable for Symbol[src]

impl Debug for Symbol[src]

impl Display for Symbol[src]

impl StructuralPartialEq for Symbol[src]

impl PartialEq<Symbol> for Symbol[src]

impl Clone for Symbol[src]

impl StructuralEq for Symbol[src]

impl Ord for Symbol[src]

impl<CTX> ToStableHashKey<CTX> for Symbol[src]

type KeyType = SymbolStr

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

impl PartialOrd<Symbol> for Symbol[src]

impl Hash for Symbol[src]

impl Decodable for Symbol[src]

impl Copy for Symbol[src]

impl PartialEq<Symbol> for Path[src]

Auto Trait Implementations

impl Send for Symbol

impl Sync for Symbol

impl Unpin for Symbol

impl UnwindSafe for Symbol

impl RefUnwindSafe for Symbol

Blanket Implementations

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

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

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

type Owned = T

The resulting type after obtaining ownership.

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

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

type Error = !

The type returned in the event of a conversion error.

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.

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

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

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

impl<T> Erased for T[src]

impl<T> Encodable for T where
    T: UseSpecializedEncodable + ?Sized
[src]

impl<T> Decodable for T where
    T: UseSpecializedDecodable
[src]

impl<E> SpecializationError for E[src]

impl<Q, K> Equivalent<K> for Q where
    K: Borrow<Q> + ?Sized,
    Q: Eq + ?Sized
[src]