Struct rustc_mir::interpret::InitMask

pub struct InitMask {
    blocks: Vec<u64>,
    len: Size,
}

A bitmask where each bit refers to the byte with the same index. If the bit is true, the byte is initialized. If it is false the byte is uninitialized.

Fields

blocks: Vec<u64>

len: Size

Implementations

impl InitMask

pub const BLOCK_SIZE: u64

pub fn new(size: Size, state: bool) -> InitMask

pub fn is_range_initialized(
    &self,
    start: Size,
    end: Size
) -> Result<(), Range<Size>>

Checks whether the range start..end (end-exclusive) is entirely initialized.

Returns Ok(()) if it's initialized. Otherwise returns a range of byte indexes for the first contiguous span of the uninitialized access.

pub fn set_range(&mut self, start: Size, end: Size, new_state: bool)

pub fn set_range_inbounds(&mut self, start: Size, end: Size, new_state: bool)

pub fn get(&self, i: Size) -> bool

pub fn set(&mut self, i: Size, new_state: bool)

pub fn grow(&mut self, amount: Size, new_state: bool)

Trait Implementations

impl Clone for InitMask

fn clone(&self) -> InitMask

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for InitMask

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

Formats the value using the given formatter.

impl Eq for InitMask

impl Hash for InitMask

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl Ord for InitMask

fn cmp(&self, other: &InitMask) -> Ordering

This method returns an [Ordering] between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<InitMask> for InitMask

fn eq(&self, other: &InitMask) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<InitMask> for InitMask

fn partial_cmp(&self, other: &InitMask) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &InitMask) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &InitMask) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &InitMask) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &InitMask) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.