Struct syn::Lifetime

pub struct Lifetime {
    pub apostrophe: Span,
    pub ident: Ident,
}

A Rust lifetime: 'a.

Lifetime names must conform to the following rules:

• Must start with an apostrophe.
• Must not consist of just an apostrophe: '.
• Character after the apostrophe must be _ or a Unicode code point with the XID_Start property.
• All following characters must be Unicode code points with the XID_Continue property.

This type is available if Syn is built with the "derive" or "full" feature.

Fields

apostrophe: Span

ident: Ident

Methods

impl Lifetime

pub fn new(symbol: &str, span: Span) -> Self

Panics

Panics if the lifetime does not conform to the bulleted rules above.

Invocation

# use proc_macro2::Span;
# use syn::Lifetime;
#
# fn f() -> Lifetime {
Lifetime::new("'a", Span::call_site())
# }

Trait Implementations

impl Token for Lifetime

fn peek(cursor: Cursor) -> bool

fn display() -> &'static str

impl Parse for Lifetime

fn parse(input: ParseStream) -> Result<Self>

impl Eq for Lifetime

impl Clone for Lifetime

fn clone(&self) -> Lifetime

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialOrd<Lifetime> for Lifetime

fn partial_cmp(&self, other: &Lifetime) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use] fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use] fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use] fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use] fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl PartialEq<Lifetime> for Lifetime

fn eq(&self, other: &Lifetime) -> bool

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Ord for Lifetime

fn cmp(&self, other: &Lifetime) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

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

Restrict a value to a certain interval.

impl From<Lifetime> for TypeParamBound

fn from(e: Lifetime) -> TypeParamBound

Performs the conversion.

impl Hash for Lifetime

fn hash<H: Hasher>(&self, h: &mut H)

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl Display for Lifetime

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

Formats the value using the given formatter.

impl ToTokens for Lifetime

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object.