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// Module declarations
pub mod basis;
pub mod utils;
pub mod diffusion_solver;
pub mod stokes_solver;

// Internal dependencies + re-exports
pub use diffusion_solver::{DiffussionParamsTimeDependent, DiffussionSolverTimeDependent, DiffussionSolverTimeIndependent, DiffussionParamsTimeIndependent};
pub use stokes_solver::{StokesParams1D, StokesParams2D, StaticPressureSolver};
use super::solver_trait::DiffEquationSolver;

/// # General Information
///
/// An enum representing every equation implemented by this library.
/// Used as a way of representing an equation without having to create an instance of a solver of it. May be deprecated in the future in favor of a intercative
/// approach from window interface.
///
/// # Arms
///
/// * `DiffussionSolverTimeIndependent` - Diffusion equation solver representation.
/// * `DiffussionSolverTimeDependent` - Diffusion equation solver with time derivative representation.
/// * `Stokes1DSolver` - Stokes in 1D solver representation.
/// * `Stokes2DSolver` - Stokes in 2D solver representation.
/// * `None` - Visuallization of mesh in simulation. No equation attached.
///
#[derive(Debug)]
pub enum Solver {
    DiffussionSolverTimeIndependent(DiffussionParamsTimeIndependent),
    DiffussionSolverTimeDependent(DiffussionParamsTimeDependent),
    Stokes1DSolver(StokesParams1D),
    Stokes2DSolver(StokesParams2D),
    None
}

#[derive(Debug)]
pub struct NoSolver();

impl DiffEquationSolver for NoSolver {

    fn solve(&mut self, _time_step: f64) -> Result<Vec<f64>, crate::Error> {
        Ok(vec![])
    }
}