Struct OrderBook 

pub struct OrderBook { /* private fields */ }

Order book for peer-to-peer trades.

Implementations

impl OrderBook

pub fn new() -> Self

pub fn create_order( &mut self, seller: &str, sell_currency: &str, sell_amount: u64, buy_currency: &str, price: u64, ) -> SellOrder

Create a new sell order and add it to the book.

Returns the created order. The caller must ensure the seller has sufficient balance before listing — the order book does not escrow.

pub fn list_offers( &self, currency_pair: Option<(&str, &str)>, ) -> Vec<&SellOrder>

List all active orders, optionally filtered by currency pair.

When currency_pair is Some((sell, buy)), only orders matching that exact pair are returned.

pub fn cancel_order( &mut self, id: &str, seller: &str, ) -> Result<SellOrder, PaymentError>

Cancel an order. Only the original seller can cancel.

pub fn execute_swap( &mut self, id: &str, buyer: &str, ledger: &mut WebLedger, ) -> Result<SwapResult, PaymentError>

Execute a swap against an existing sell order.

Atomic: debits the buyer in buy_currency, credits the seller in buy_currency, debits the seller in sell_currency, credits the buyer in sell_currency, then removes the order.

Trait Implementations

impl Clone for OrderBook

fn clone(&self) -> OrderBook

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OrderBook

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

Formats the value using the given formatter.

impl Default for OrderBook

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for OrderBook

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for OrderBook

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

where __S: Serializer,

Serialize this value into the given Serde serializer.