Enum PanicCall 

pub enum PanicCall<'a> {
    DefaultMessage,
    Str2015(&'a Expr<'a>),
    Display(&'a Expr<'a>),
    Format(&'a Expr<'a>),
}

A call to a function in std::rt or core::panicking that results in a panic, typically part of a panic!() expansion (often wrapped in a block) but may be called directly by other macros such as assert.

Variants

DefaultMessage

Str2015(&'a Expr<'a>)

A string literal or any &str in edition 2015/2018 - panic!("message") or panic!(message).

In edition 2021+ panic!("message") will be a PanicCall::Format and panic!(message) a compile error.

Display(&'a Expr<'a>)

A single argument that implements Display - panic!("{}", object).

panic!("{object}") will still be a PanicCall::Format.

Format(&'a Expr<'a>)

Anything else - panic!("error {}: {}", a, b), panic!("on edition 2021+").

See FormatArgsStorage::get to examine the contents of the formatting.

Implementations

impl<'a> PanicCall<'a>

pub fn parse(expr: &'a Expr<'a>) -> Option<Self>

pub fn is_default_message(&self) -> bool

Trait Implementations

impl<'a> Debug for PanicCall<'a>

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

Formats the value using the given formatter.

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: 16 bytes

Size for each variant:

• DefaultMessage: 0 bytes
• Str2015: 8 bytes
• Display: 8 bytes
• Format: 8 bytes