Enum rustc_builtin_macros::format_foreign::printf::Substitution

pub(crate) enum Substitution<'a> {
    Format(Format<'a>),
    Escape((usize, usize)),
}

Represents a single printf-style substitution.

Variants

Format(Format<'a>)

A formatted output substitution with its internal byte offset.

Escape((usize, usize))

A literal %% escape, with its start and end indices.

Implementations

impl<'a> Substitution<'a>

pub(crate) fn as_str(&self) -> &str

pub(crate) fn position(&self) -> InnerSpan

pub(crate) fn set_position(&mut self, start: usize, end: usize)

pub(crate) fn translate(&self) -> Result<String, Option<String>>

Translate this substitution into an equivalent Rust formatting directive.

This ignores cases where the substitution does not have an exact equivalent, or where the substitution would be unnecessary.

Trait Implementations

impl<'a> Clone for Substitution<'a>

fn clone(&self) -> Substitution<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Substitution<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for Substitution<'a>

fn eq(&self, other: &Substitution<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> StructuralPartialEq for Substitution<'a>

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: 96 bytes

Size for each variant:

• Format: 96 bytes
• Escape: 16 bytes