Struct OutPoint

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

Implementations

impl OutPoint

pub fn new(tx_hash: Byte32, index: u32) -> Self

Creates a new OutPoint.

pub fn null() -> Self

Creates a new null OutPoint.

pub fn is_null(&self) -> bool

Checks whether self is a null OutPoint.

pub fn to_cell_key(&self) -> Vec<u8>

Generates a binary data to be used as a key for indexing cells in storage.

Notice

The difference between Self::as_slice() and Self::to_cell_key() is the byteorder of the field index.

• Uses little endian for the field index in serialization.

  Because in the real world, the little endian machines make up the majority, we can cast it as a number without re-order the bytes.

• Uses big endian for the field index to index cells in storage.

  So we can use tx_hash as key prefix to seek the cells from storage in the forward order, so as to traverse cells in the forward order too.

impl OutPoint

pub const TOTAL_SIZE: usize = 36usize

pub const FIELD_SIZES: [usize; 2] = _

pub const FIELD_COUNT: usize = 2usize

pub fn tx_hash(&self) -> Byte32

pub fn index(&self) -> Uint32

pub fn as_reader<'r>(&'r self) -> OutPointReader<'r>

Trait Implementations

impl Clone for OutPoint

fn clone(&self) -> OutPoint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OutPoint

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

Formats the value using the given formatter.

impl Default for OutPoint

fn default() -> Self

Returns the “default value” for a type.

impl Display for OutPoint

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

Formats the value using the given formatter.

impl Entity for OutPoint

const NAME: &'static str = "OutPoint"

type Builder = OutPointBuilder

fn new_unchecked(data: Bytes) -> Self

fn as_bytes(&self) -> Bytes

fn as_slice(&self) -> &[u8]

fn from_slice(slice: &[u8]) -> VerificationResult<Self>

fn from_compatible_slice(slice: &[u8]) -> VerificationResult<Self>

fn new_builder() -> Self::Builder

fn as_builder(self) -> Self::Builder

impl Hash for OutPoint

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 LowerHex for OutPoint

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

Formats the value using the given formatter.

impl Ord for OutPoint

fn cmp(&self, other: &Self) -> 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 OutPoint

fn eq(&self, other: &Self) -> 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 OutPoint

fn partial_cmp(&self, other: &Self) -> 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 Eq for OutPoint