Struct parsel::ast::Empty

pub struct Empty;

Always parses succesfully, consuming no tokens. Emits nothing when printed.

This type exists because syn::parse::Nothing doesn’t implement ToTokens.

Implementations

impl Empty

pub const fn new() -> Self

Trait Implementations

impl Clone for Empty

fn clone(&self) -> Empty

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Empty

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

Formats the value using the given formatter.

impl Default for Empty

fn default() -> Empty

Returns the “default value” for a type.

impl Display for Empty

fn fmt(&self, _formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromStr for Empty

type Err = Error

The associated error which can be returned from parsing.

fn from_str(string: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl Hash for Empty

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Empty

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl Parse for Empty

fn parse(_input: ParseStream<'_>) -> Result<Self>

impl PartialEq for Empty

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

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

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.

impl PartialOrd for Empty

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

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

fn lt(&self, other: &Rhs) -> bool

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

fn le(&self, other: &Rhs) -> bool

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

fn gt(&self, other: &Rhs) -> bool

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

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 ToTokens for Empty

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

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.

impl Copy for Empty

impl Eq for Empty

impl StructuralPartialEq for Empty