Struct syntax::ast::Arm

pub struct Arm {
    pub attrs: Vec<Attribute>,
    pub pats: Vec<P<Pat>>,
    pub guard: Option<P<Expr>>,
    pub body: P<Expr>,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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An arm of a 'match'.

E.g. 0..=10 => { println!("match!") } as in

match 123 {
    0..=10 => { println!("match!") },
    _ => { println!("no match!") },
}

Fields

attrs: Vec<Attribute>

🔬 This is a nightly-only experimental API. (rustc_private)

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pats: Vec<P<Pat>>

🔬 This is a nightly-only experimental API. (rustc_private)

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guard: Option<P<Expr>>

🔬 This is a nightly-only experimental API. (rustc_private)

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body: P<Expr>

🔬 This is a nightly-only experimental API. (rustc_private)

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Trait Implementations

impl Clone for Arm

fn clone(&self) -> Arm

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Encodable for Arm

fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

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impl Decodable for Arm

fn decode<__D: Decoder>(d: &mut __D) -> Result<Arm, __D::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

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impl Debug for Arm

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl HasAttrs for Arm

Important traits for &'a mut [u8]

impl<'a> Write for &'a mut [u8]impl<'a> Read for &'a [u8]

fn attrs(&self) -> &[Attribute]

🔬 This is a nightly-only experimental API. (rustc_private)

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fn map_attrs<F>(self, f: F) -> Self where     F: FnOnce(Vec<Attribute>) -> Vec<Attribute>,

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impl ToTokens for Arm

Important traits for Vec<u8>

impl Write for Vec<u8>

fn to_tokens(&self, _cx: &ExtCtxt) -> Vec<TokenTree>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?