Struct proc_macro2::Punct

pub struct Punct { /* private fields */ }

A Punct is a single punctuation character like +, - or #.

Multicharacter operators like += are represented as two instances of Punct with different forms of Spacing returned.

Implementations

impl Punct

pub fn new(ch: char, spacing: Spacing) -> Self

Creates a new Punct from the given character and spacing.

The ch argument must be a valid punctuation character permitted by the language, otherwise the function will panic.

The returned Punct will have the default span of Span::call_site() which can be further configured with the set_span method below.

pub fn as_char(&self) -> char

Returns the value of this punctuation character as char.

pub fn spacing(&self) -> Spacing

Returns the spacing of this punctuation character, indicating whether it’s immediately followed by another Punct in the token stream, so they can potentially be combined into a multicharacter operator (Joint), or it’s followed by some other token or whitespace (Alone) so the operator has certainly ended.

pub fn span(&self) -> Span

Returns the span for this punctuation character.

pub fn set_span(&mut self, span: Span)

Configure the span for this punctuation character.

Trait Implementations

impl Clone for Punct

fn clone(&self) -> Punct

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Punct

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

Formats the value using the given formatter.

impl Display for Punct

Prints the punctuation character as a string that should be losslessly convertible back into the same character.

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

Formats the value using the given formatter.

impl From<Punct> for TokenTree

fn from(g: Punct) -> Self

Converts to this type from the input type.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 12 bytes