quantsupport 0.1.6

Rust quantitative finance library for derivatives pricing, yield-curve bootstrapping, AAD risk, Monte Carlo exposure, and XVA.
Documentation 
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use std::cell::{Ref, RefMut};

use crate::{
    ad::dual::DualFwd,
    core::{marketdatahandling::constructedelementstore::SharedElement, pillars::Pillars},
    indices::marketindex::MarketIndex,
    volatility::volatilitycube::VolatilityCube,
};

/// [`ADVolatilityCubeElement`] is a trait to identify AD-enable volatility cubes.
pub trait ADVolatilityCubeElement: VolatilityCube<DualFwd> + Pillars<DualFwd> + Send + Sync {}

/// [`VolatilityCubeElement`] is a handle to a particular [`ADVolatilityCubeElement`].
#[derive(Clone)]
pub struct VolatilityCubeElement {
    market_index: MarketIndex,
    cube: SharedElement<dyn ADVolatilityCubeElement>,
}

impl VolatilityCubeElement {
    /// Creates a new [`VolatilityCubeElement`] with the specified market index and surface.
    #[must_use]
    pub fn new(
        market_index: MarketIndex,
        cube: SharedElement<dyn ADVolatilityCubeElement>,
    ) -> Self {
        Self { market_index, cube }
    }

    /// Returns the market index associated with the volatility surface element.
    #[must_use]
    pub const fn market_index(&self) -> &MarketIndex {
        &self.market_index
    }

    /// Returns a reference to the surface associated with the volatility surface element.
    #[must_use]
    pub fn cube(&self) -> Ref<'_, dyn ADVolatilityCubeElement> {
        self.cube.borrow()
    }

    /// Returns a mutable reference to the surface associated with the volatility surface element.
    pub fn cube_mut(&mut self) -> RefMut<'_, dyn ADVolatilityCubeElement> {
        self.cube.borrow_mut()
    }
}