apple-quant-algorithmic 0.4.0

Apple Quant's algorithmic library.
Documentation 
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use rust_decimal::Decimal;
use smallvec::SmallVec;

use crate::{
	instrument::{InstrumentData, InstrumentSpec},
	timestamp::{Timestamp, Timestamped, TradeTimestamp, TradeTimestamped},
	aggregation::Aggregator, aggregation_std::StdTrades, price::AbsolutePrice,
	volume::AggressiveVolume,
};

pub type TradeTradeTimestampListInline<IS, const N: usize> = SmallVec<[TradeTradeTimestamp<IS>; N]>;

pub type TradeTradeTimestampList<IS> = Vec<TradeTradeTimestamp<IS>>;

#[derive(Debug)]
pub struct RuntimeTrade {
	pub price: Decimal,
	pub volume: Decimal,
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct Trade<IS: InstrumentSpec> {
	pub price: AbsolutePrice<IS>,
	pub aggressive_volume: AggressiveVolume<IS>,
}

impl<IS: InstrumentSpec> Trade<IS> {
	pub fn as_runtime(
		&self,
	) -> RuntimeTrade {
		RuntimeTrade {
			price: self.price.as_decimal(),
			volume: self.aggressive_volume
				.as_directional_intent_volume()
				.directional_intent.as_decimal(),
		}
	}
}

/// Collection of both price and timestamp information.
#[derive(Debug, Clone, Copy, Eq)]
pub struct TradeTradeTimestamp<IS: InstrumentSpec> {
	trade: Trade<IS>,
	trade_timestamp: TradeTimestamp,
}

impl<IS: InstrumentSpec> TradeTradeTimestamp<IS> {
	pub fn new(
		trade: Trade<IS>,
		trade_timestamp: TradeTimestamp,
	) -> Self {
		Self { trade, trade_timestamp }
	}

	pub fn trade(
		&self,
	) -> &Trade<IS> {
		&self.trade
	}
}

impl<IS: InstrumentSpec> TradeTimestamped for TradeTradeTimestamp<IS> {
	fn trade_timestamp(
		&self,
	) -> TradeTimestamp {
		self.trade_timestamp
	}
}

impl<IS: InstrumentSpec> Timestamped for TradeTradeTimestamp<IS> {
	fn timestamp(
		&self,
	) -> Timestamp {
		self.trade_timestamp.timestamp()
	}
}

impl<
	'instrument_data,
	'aggregated_data,
	IS: InstrumentSpec + 'aggregated_data,
> Aggregator<
	'instrument_data,
	'aggregated_data,
	Self,
	StdTrades<'instrument_data, IS>,
	IS,
> for TradeTradeTimestamp<IS> {
	fn hot_data<'iter>(
		instrument_data: &'instrument_data InstrumentData<
			'instrument_data,
			'aggregated_data,
			IS,
		>,
		_recent_aggregated_data_backward: impl Iterator<Item = &'iter Self>,
	) -> StdTrades<'instrument_data, IS>
	where
		Self: 'iter,
	{
		StdTrades::<'instrument_data, IS>::new_aggregate::<Self>(instrument_data)
	}

	fn aggregate_hot(
		aggregator_data: &StdTrades<'instrument_data, IS>,
	) -> impl Iterator<Item = Self> {
		aggregator_data.iter().cloned()
	}
}

impl<IS: InstrumentSpec> Ord for TradeTradeTimestamp<IS> {
	fn cmp(
		&self,
		other: &Self,
	) -> std::cmp::Ordering {
		self.trade_timestamp.cmp(&other.trade_timestamp)
	}
}

impl<IS: InstrumentSpec> PartialOrd for TradeTradeTimestamp<IS> {
	fn partial_cmp(
		&self,
		other: &Self,
	) -> Option<std::cmp::Ordering> {
		self.trade_timestamp.partial_cmp(&other.trade_timestamp)
	}
}

impl<IS: InstrumentSpec> PartialEq for TradeTradeTimestamp<IS> {
	fn eq(
		&self,
		other: &Self,
	) -> bool {
		self.trade_timestamp.eq(&other.trade_timestamp)
	}
}