Struct Grid 

pub struct Grid { /* private fields */ }

One asset’s grid: its size decimals, and whether its prices take the perp or the spot ceiling.

Implementations

impl Grid

pub const fn perp(sz_decimals: u32) -> Grid

A perp, main dex or HIP-3, by its szDecimals in meta.

pub const fn spot(sz_decimals: u32) -> Grid

A spot pair, by its base token’s szDecimals in spotMeta.

pub const fn sz_decimals(self) -> u32

pub const fn price_places(self) -> u32

Places a price may use: six (perp) or eight (spot), less the size decimals.

pub fn tick(self, price: Dec, round: Round) -> Option<Dec>

price on the grid, rounded as asked, once: at the coarser of the places allowed and five significant figures, and never past the whole part (a whole price is always taken). Rounding to the places and then to the figures would round twice: to the nearest, 81800.45 would become 81801, not 81800. None when nothing positive is left.

pub fn price(self, price: Dec, side: Side) -> Option<Dec>

A limit price for side, never worse for the trader than asked: a buy rounds down and a sell up.

pub fn is_on_grid(self, price: Dec) -> bool

Whether the venue takes price exactly as written.

pub fn size(self, size: Dec) -> Option<Dec>

A size cut toward zero to the size decimals. None when nothing is left.

pub fn market_bound( self, reference: Dec, slippage: Dec, side: Side, ) -> Result<Dec, TradeError>

The worst price a market order takes: reference moved by slippage (a fraction, 0.01 for 1%) on the side that costs more, then rounded back toward reference, so the bound is never looser than asked.

pub fn least_size(self, price: Dec) -> Option<Dec>

The smallest size worth MINIMUM_ORDER_VALUE at price, rounded up to the size decimals.

pub fn meets_minimum(price: Dec, size: Dec) -> bool

Whether size at price is worth the venue’s minimum.

Trait Implementations

impl Clone for Grid

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Grid

impl Debug for Grid

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

Formats the value using the given formatter.

impl Eq for Grid

impl Hash for Grid

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 Grid

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Grid