Struct FatPointer

pub struct FatPointer {
    pub offset: u32,
    pub memory_page: u32,
    pub start: u32,
    pub length: u32,
}

Fields

offset: u32

memory_page: u32

start: u32

length: u32

Implementations

impl FatPointer

pub const FAT_POINTER_PACKED_WIDTH: u32 = 128u32

pub const fn empty() -> Self

pub const fn from_u256(value: U256) -> Self

pub fn validate(self, is_fresh: bool) -> FatPointerValidationException

pub const fn validate_in_bounds(&self) -> bool

IMPORTANT: when we create a pointer in VM using checked routine we know that start and length form a good combination in terms of no overflows and spanning only addressable region, so we only need to check that offset < length

pub const fn validate_as_slice(&self) -> bool

We allow to pass empty (offset == length) slices in Far call / Ret

pub const fn is_trivial(&self) -> bool

special case when we supply empty slice, that is formally NOT addressable

pub const fn to_u256(self) -> U256

Trait Implementations

impl Clone for FatPointer

fn clone(&self) -> FatPointer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FatPointer

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

Formats the value using the given formatter.

impl Hash for FatPointer

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 Ord for FatPointer

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FatPointer

fn eq(&self, other: &FatPointer) -> 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 PartialOrd for FatPointer

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for FatPointer

impl Eq for FatPointer

impl StructuralPartialEq for FatPointer