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)

An arm of a 'match'.

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

match n {
    0...10 => { println!("match!") },
    // ..
}

Fields

attrs: Vec<Attribute>

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

pats: Vec<P<Pat>>

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

guard: Option<P<Expr>>

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

body: P<Expr>

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

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 PartialEq for Arm

fn eq(&self, __arg_0: &Arm) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Arm) -> bool

This method tests for !=.

impl Eq for Arm

impl Encodable for Arm

fn encode<__S: Encoder>(&self, __arg_0: &mut __S) -> Result<(), __S::Error>

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

deprecated in favor of rustc-serialize on crates.io

impl Decodable for Arm

fn decode<__D: Decoder>(__arg_0: &mut __D) -> Result<Arm, __D::Error>

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

deprecated in favor of rustc-serialize on crates.io

impl Hash for Arm

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the state given, updating the hasher as necessary.

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher

Feeds a slice of this type into the state provided.

impl Debug for Arm

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl HasAttrs for Arm

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

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

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

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

impl ToTokens for Arm

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

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