Struct MintView 

pub struct MintView {
    pub issuer: PublicKey,
    pub layers: u32,
    pub oldest: u64,
    pub policy: Policy,
    pub schedule: Option<Schedule>,
    pub paused: bool,
}

What a holder knows about one mint: enough to tell, without asking it, whether a note can move now and when it dies.

A note’s layer follows from its serial: generations are consecutive, so a note of generation g sits at position g − oldest. A view holds the layers as the mint’s info gave them, and no clock moves it: a note counts as expired only once the info says its layer was dropped. After a rotation, read the info again.

Fields

issuer: PublicKey

The mint’s issuer key.

layers: u32

How many layers the mint has.

oldest: u64

Generation of the first layer.

policy: Policy

The rules the mint enforces.

schedule: Option<Schedule>

The rotation schedule, if the mint has one.

paused: bool

Whether the mint was paused when the view was read.

Implementations

impl MintView

pub fn new(info: &MintInfo) -> Result<Self, NoLayers>

The view a mint’s info gives.

pub fn newest(&self) -> u64

Generation of the last layer, where transferred notes land.

pub fn position(&self, note: &Note) -> Option<u32>

Position of a note’s layer, 0 for the first, or None if the note belongs to another mint, has expired or is newer than this view.

pub fn state(&self, note: &Note) -> NoteState

Where a note stands.

pub fn until_rotation(&self, now: u64) -> Option<u64>

Seconds from Unix time now until the next scheduled rotation, if the mint has a schedule and is not paused. 0 once now reaches that rotation, however far past: as far as the view knows, the mint has not made it yet, so it is the one about to come.

pub fn expires_at(&self, note: &Note) -> Option<u64>

Unix time, in seconds, of the scheduled rotation that drops a note’s layer, counted from the next rotation the view names. None when the mint has no schedule or is paused, or the note is not live in the view.

Trait Implementations

impl Clone for MintView

fn clone(&self) -> MintView

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MintView

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MintView

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MintView

impl PartialEq for MintView

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for MintView

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MintView