Module const_panic::fmt

Formatting-related items

Panic formatting for custom types can be done in these ways (in increasing order of verbosity):

• Using the PanicFmt derive macro (requires the opt-in "derive" feature)
• Using the impl_panicfmt macro (requires the default-enabled "non_basic" feature)
• Using the flatten_panicvals macro (requires the default-enabled "non_basic" feature)
• Manually implementing the PanicFmt trait as described in its docs.

Re-exports

pub use self::Delimiter::CloseBrace;

pub use self::Delimiter::CloseBracket;

pub use self::Delimiter::CloseParen;

pub use self::Delimiter::Empty as EmptyDelimiter;

pub use self::Delimiter::OpenBrace;

pub use self::Delimiter::OpenBracket;

pub use self::Delimiter::OpenParen;

Structs

ComputePvCountnon_basic

For computing the PanicFmt::PV_COUNT of a struct or enum variant, with the call method.

FmtArg

Carries all of the configuration for formatting functions.

IsCustomType

Marker type used as the PanicFmt::Kind for user-defined types.

IsPanicFmt

A marker type that proves that S implements PanicFmt<This = T, Kind = K>.

IsStdType

Marker type used as the PanicFmt::Kind associated type for std types.

PackedFmtArgnon_basic

A version of FmtArg which occupies less space, but needs to be unpacked to be used.

Separatornon_basic

For alternate flag-aware separation of fields, collection elements, etc.

Enums

Delimiternon_basic

For outputting an alternate flag-aware delimiter.

FmtKind

What kind of formatting to do, either Display or Debug.

IsLastnon_basic

For telling Separator whether it comes after the last field or not.

NumberFmt

What integers are formatted as.

TypeDelimnon_basic

Whether a struct or variant is Tupled or Braced.

Constants

COMMA_SEPnon_basic

An alternate-flag-aware comma separator for use between fields or elements.

COMMA_TERMnon_basic

An alternate-flag-aware comma for use after the last field or element.

INDENTATION_STEPnon_basic

How much indentation (in spaces) is added with FmtArg::indent, and removed with FmtArg::unindent.

SHORT_STRING_CAP

The capacity of a ShortString.

Traits

PanicFmt

Trait for types that can be formatted by const panics.

Type Definitions

ShortStringnon_basic

A stack allocated string type that’s convertible into PanicVal<'static>, with SHORT_STRING_CAP capacity.