Struct TrapCode

pub struct TrapCode(/* private fields */);

A trap code describing the reason for a trap.

All trap instructions have an explicit trap code.

Implementations

impl TrapCode

pub const STACK_OVERFLOW: TrapCode = _

The current stack space was exhausted.

pub const INTEGER_OVERFLOW: TrapCode = _

An integer arithmetic operation caused an overflow.

pub const HEAP_OUT_OF_BOUNDS: TrapCode = _

A heap_addr instruction detected an out-of-bounds error.

Note that not all out-of-bounds heap accesses are reported this way; some are detected by a segmentation fault on the heap unmapped or offset-guard pages.

pub const INTEGER_DIVISION_BY_ZERO: TrapCode = _

An integer division by zero.

pub const BAD_CONVERSION_TO_INTEGER: TrapCode = _

Failed float-to-int conversion.

pub const fn user(code: u8) -> Option<TrapCode>

Create a user-defined trap code.

Returns None if code is zero or too large and is reserved by Cranelift.

pub const fn unwrap_user(code: u8) -> TrapCode

Alias for TrapCode::user with a panic built-in.

pub const fn as_raw(&self) -> NonZeroU8

Returns the raw byte representing this trap.

pub const fn from_raw(byte: NonZeroU8) -> TrapCode

Creates a trap code from its raw byte, likely returned by TrapCode::as_raw previously.

pub const fn non_user_traps() -> &'static [TrapCode]

Returns a slice of all traps except TrapCode::User traps

Trait Implementations

impl Clone for TrapCode

fn clone(&self) -> TrapCode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TrapCode

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

Formats the value using the given formatter.

impl Display for TrapCode

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

Formats the value using the given formatter.

impl FromStr for TrapCode

type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for TrapCode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TrapCode

fn eq(&self, other: &TrapCode) -> 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 Copy for TrapCode

impl Eq for TrapCode

impl StructuralPartialEq for TrapCode