Trait proc_macro_faithful_display::FaithfulDisplay

pub trait FaithfulDisplay {
    // Required method
    fn faithful_fmt(
        &self,
        f: &mut Formatter<'_>,
        prev_span: Span
    ) -> Result<Span, Error>;
}

A more faithful Display.

This trait works by accumulating a Span as it formats tokens. By recomputing on the fly on the layout of each token, it’s possible to insert newlines and spaces to respect the initial formatting.

Required Methods

fn faithful_fmt( &self, f: &mut Formatter<'_>, prev_span: Span ) -> Result<Span, Error>

Display a token in a faithful way.

Implementations on Foreign Types

impl FaithfulDisplay for TokenTree

fn faithful_fmt( &self, f: &mut Formatter<'_>, prev_span: Span ) -> Result<Span, Error>

impl FaithfulDisplay for Group

fn faithful_fmt( &self, f: &mut Formatter<'_>, prev_span: Span ) -> Result<Span, Error>

impl FaithfulDisplay for Ident

fn faithful_fmt( &self, f: &mut Formatter<'_>, prev_span: Span ) -> Result<Span, Error>

impl FaithfulDisplay for Literal

fn faithful_fmt( &self, f: &mut Formatter<'_>, prev_span: Span ) -> Result<Span, Error>

impl FaithfulDisplay for Punct

fn faithful_fmt( &self, f: &mut Formatter<'_>, prev_span: Span ) -> Result<Span, Error>

impl FaithfulDisplay for TokenStream

fn faithful_fmt( &self, f: &mut Formatter<'_>, prev_span: Span ) -> Result<Span, Error>

Implementors