Files
GridFire/src/include/gridfire/reaction/reaction.h
Emily Boudreaux ced29d2f63 fix(engine_multiscale): resolved bug which prevented proper equilibrium abundances from being found
this was done by adjusting the scaling of the QSE operator() residuals from r = dy/dt to r=(dy/dt)/y
2025-10-22 09:54:10 -04:00

898 lines
37 KiB
C++

#pragma once
#include <string_view>
#include "fourdst/composition/atomicSpecies.h"
#include "fourdst/logging/logging.h"
#include "quill/Logger.h"
#include <unordered_map>
#include <vector>
#include <unordered_set>
#include "cppad/cppad.hpp"
#include "fourdst/composition/composition.h"
/**
* @file reaction.h
* @brief Defines classes for representing and managing nuclear reactions.
*
* This file contains the core data structures for handling nuclear reactions,
* including individual reactions from specific sources (`Reaction`), collections
* of reactions (`ReactionSet`), and logical reactions that aggregate rates from
* multiple sources (`LogicalReaclibReaction`, `LogicalReactionSet`).
*/
namespace gridfire::reaction {
enum class ReactionType {
WEAK,
REACLIB,
LOGICAL_REACLIB,
};
static std::unordered_map<ReactionType, std::string> ReactionTypeNames = {
{ReactionType::WEAK, "weak"},
{ReactionType::REACLIB, "reaclib"},
{ReactionType::LOGICAL_REACLIB, "logical_reaclib"},
};
static std::unordered_map<ReactionType, std::string> ReactionPhysicalTypeNames = {
{ReactionType::WEAK, "Weak"},
{ReactionType::REACLIB, "Strong"},
{ReactionType::LOGICAL_REACLIB, "Strong"},
};
/**
* @struct RateCoefficientSet
* @brief Holds the seven coefficients for the REACLIB rate equation.
*
* This struct stores the parameters (a0-a6) used to calculate reaction rates
* as a function of temperature.
*/
struct RateCoefficientSet {
double a0; ///< Coefficient a0
double a1; ///< Coefficient a1
double a2; ///< Coefficient a2
double a3; ///< Coefficient a3
double a4; ///< Coefficient a4
double a5; ///< Coefficient a5
double a6; ///< Coefficient a6
/**
* @brief Overloads the stream insertion operator for easy printing.
* @param os The output stream.
* @param r The RateCoefficientSet to print.
* @return The output stream.
*/
friend std::ostream& operator<<(std::ostream& os, const RateCoefficientSet& r) {
os << "[" << r.a0 << ", " << r.a1 << ", " << r.a2 << ", "
<< r.a3 << ", " << r.a4 << ", " << r.a5 << ", " << r.a6 << "]";
return os;
}
};
/**
* @class Reaction
* @brief Represents a single nuclear reaction from a specific data source.
*
* This class encapsulates all properties of a single nuclear reaction as defined
* in formats like REACLIB, including reactants, products, Q-value, and rate
* coefficients from a particular evaluation (source).
*
* Example:
* @code
* // Assuming species and rate coefficients are defined
* Reaction p_gamma_d(
* "H_1_H_1_to_H_2", "p(p,g)d", 1, {H_1, H_1}, {H_2}, 5.493, "st08", rate_coeffs
* );
* double rate = p_gamma_d.calculate_rate(0.1); // T9 = 0.1
* @endcode
*/
class Reaction {
public:
/**
* @brief Virtual destructor for correct polymorphic cleanup.
*/
virtual ~Reaction() = default;
/**
* @brief Compute the temperature- and composition-dependent reaction rate.
*
* This is the primary interface used by the network to obtain the rate of a single
* reaction at the given thermodynamic state and composition. The exact units and
* normalization are defined by the concrete implementation (e.g., REACLIB typically
* provides NA<sigma v> with units depending on the reaction order). Implementations may
* use density/electron properties for weak processes or screening, and the composition
* vector for multi-body reactions.
*
* @param T9 Temperature in GK (10^9 K).
* @param rho Mass density (g cm^-3). May be unused for some reaction types.
* @param Ye Electron fraction. May be unused depending on the reaction type.
* @param mue Electron chemical potential. May be unused depending on the reaction type.
* @param Y Composition vector (molar abundances or number fractions) indexed consistently
* with index_to_species_map.
* @param index_to_species_map Mapping from state-vector index to Species, used to interpret Y.
* @return The reaction rate for the forward direction, with units/normalization defined by the
* specific model (implementation must document its convention).
*/
[[nodiscard]] virtual double calculate_rate(
double T9,
double rho,
double Ye,
double mue,
const std::vector<double> &Y,
const std::unordered_map<size_t, fourdst::atomic::Species>& index_to_species_map
) const = 0;
/**
* @brief AD-enabled reaction rate for algorithmic differentiation.
*
* This overload mirrors calculate_rate(double, ...) but operates on CppAD types to
* enable derivative calculations w.r.t. its inputs.
*
* @param T9 Temperature in GK as CppAD::AD<double>.
* @param rho Mass density as CppAD::AD<double>.
* @param Ye Electron fraction as CppAD::AD<double>.
* @param mue Electron chemical potential as CppAD::AD<double>.
* @param Y Composition vector as CppAD::AD<double> values.
* @param index_to_species_map Mapping from state-vector index to Species, used to interpret Y.
* @return The reaction rate as a CppAD::AD<double> value.
*/
[[nodiscard]] virtual CppAD::AD<double> calculate_rate(
CppAD::AD<double> T9,
CppAD::AD<double> rho,
CppAD::AD<double> Ye,
CppAD::AD<double> mue,
const std::vector<CppAD::AD<double>>& Y,
const std::unordered_map<size_t, fourdst::atomic::Species>& index_to_species_map
) const = 0;
/**
* @brief A stable, unique identifier for this reaction instance.
* @return String view of the reaction ID (stable across runs and suitable for lookups).
*/
[[nodiscard]] virtual std::string_view id() const = 0;
/**
* @brief Ordered list of reactant species.
*
* Multiplicity is represented by duplicates, e.g., (p, p) would list H1 twice.
* @return Const reference to the vector of reactants.
*/
[[nodiscard]] virtual const std::vector<fourdst::atomic::Species>& reactants() const = 0;
/**
* @brief Ordered list of product species.
*
* Multiplicity is represented by duplicates if applicable.
* @return Const reference to the vector of products.
*/
[[nodiscard]] virtual const std::vector<fourdst::atomic::Species>& products() const = 0;
/**
* @brief True if the species appears as a reactant or a product.
* @param species Species to test.
* @return Whether the species participates in the reaction (either side).
*/
[[nodiscard]] virtual bool contains(const fourdst::atomic::Species& species) const = 0;
/**
* @brief True if the species appears among the reactants.
* @param species Species to test.
* @return Whether the species is a reactant.
*/
[[nodiscard]] virtual bool contains_reactant(const fourdst::atomic::Species& species) const = 0;
/**
* @brief True if the species appears among the products.
* @param species Species to test.
* @return Whether the species is a product.
*/
[[nodiscard]] virtual bool contains_product(const fourdst::atomic::Species& species) const = 0;
/**
* @brief Whether this object represents a reverse (backward) rate.
*
* Implementations may pair forward/reverse rates for detailed balance. This flag indicates
* that the parameterization corresponds to the reverse direction.
* @return True for a reverse rate, false for a forward rate.
*/
[[nodiscard]] virtual bool is_reverse() const = 0;
/**
* @brief Set of all unique species appearing in the reaction.
* @return Unordered set of all reactants and products (no duplicates).
*/
[[nodiscard]] virtual std::unordered_set<fourdst::atomic::Species> all_species() const = 0;
/**
* @brief Set of unique reactant species.
* @return Unordered set of reactant species (no duplicates).
*/
[[nodiscard]] virtual std::unordered_set<fourdst::atomic::Species> reactant_species() const = 0;
/**
* @brief Set of unique product species.
* @return Unordered set of product species (no duplicates).
*/
[[nodiscard]] virtual std::unordered_set<fourdst::atomic::Species> product_species() const = 0;
/**
* @brief Number of unique species involved in the reaction.
* @return Count of distinct species across reactants and products.
*/
[[nodiscard]] virtual size_t num_species() const = 0;
/**
* @brief Full stoichiometry map for this reaction.
*
* Coefficients are negative for reactants and positive for products; multiplicity is reflected
* in the magnitude (e.g., 2H -> He gives H: -2, He: +1).
* @return Map from Species to integer stoichiometric coefficient.
*/
[[nodiscard]] virtual std::unordered_map<fourdst::atomic::Species, int> stoichiometry() const = 0;
/**
* @brief Stoichiometric coefficient for a particular species.
* @param species Species for which to query the coefficient.
* @return Negative for reactants, positive for products, zero if absent.
*/
[[nodiscard]] virtual int stoichiometry(const fourdst::atomic::Species& species) const = 0;
/**
* @brief Stable content-based hash for this reaction.
*
* Intended for use in caches, sets, and order-independent hashing of Reaction collections.
* Implementations should produce the same value across processes for the same content and seed.
* @param seed Seed value to initialize/mix into the hash.
* @return 64-bit hash value.
*/
[[nodiscard]] virtual uint64_t hash(uint64_t seed) const = 0;
/**
* @brief Q-value of the reaction (typically MeV), positive if exothermic.
* @return Reaction Q-value used for energy accounting.
*/
[[nodiscard]] virtual double qValue() const = 0;
/**
* @brief Convenience: energy generation rate from this reaction (double version).
*
* Default implementation multiplies the scalar rate by the reaction Q-value. Electron
* quantities (Ye, mue) are ignored in this default, so override in derived classes if
* needed. Sign convention follows qValue().
*
* @param T9 Temperature in GK (10^9 K).
* @param rho Mass density (g cm^-3).
* @param Ye Electron fraction (ignored by default implementation).
* @param mue Electron chemical potential (ignored by default implementation).
* @param Y Composition vector.
* @param index_to_species_map Mapping from state-vector index to Species.
* @return Energy generation rate, typically rate * qValue().
*/
[[nodiscard]] virtual double calculate_energy_generation_rate(
const double T9,
const double rho,
const double Ye,
double mue,
const std::vector<double>& Y,
const std::unordered_map<size_t, fourdst::atomic::Species>& index_to_species_map
) const {
return calculate_rate(T9, rho, 0, 0, Y, index_to_species_map) * qValue();
}
/**
* @brief Convenience: AD-enabled energy generation rate (AD version).
*
* Default implementation multiplies the AD rate by the reaction Q-value. Electron
* quantities (Ye, mue) are ignored in this default, so override if they contribute.
*
* @param T9 Temperature in GK as CppAD::AD<double>.
* @param rho Mass density as CppAD::AD<double>.
* @param Ye Electron fraction as CppAD::AD<double> (ignored by default).
* @param mue Electron chemical potential as CppAD::AD<double> (ignored by default).
* @param Y Composition vector as CppAD::AD<double> values.
* @param index_to_species_map Mapping from state-vector index to Species.
* @return Energy generation rate as CppAD::AD<double>.
*/
[[nodiscard]] virtual CppAD::AD<double> calculate_energy_generation_rate(
const CppAD::AD<double>& T9,
const CppAD::AD<double>& rho,
const CppAD::AD<double> &Ye,
const CppAD::AD<double> &mue,
const std::vector<CppAD::AD<double>>& Y,
const std::unordered_map<size_t, fourdst::atomic::Species>& index_to_species_map
) const {
return calculate_rate(T9, rho, {}, {}, Y, index_to_species_map) * qValue();
}
/**
* @brief Logarithmic partial derivative of the rate with respect to temperature.
*
* Implementations return d(ln rate)/d(ln T9) or an equivalent measure (as documented by the
* concrete class), evaluated at the provided state.
*
* @param T9 Temperature in GK (10^9 K).
* @param rho Mass density (g cm^-3).
* @param Ye Electron fraction.
* @param mue Electron chemical potential.
* @param comp Composition object providing composition in a convenient form.
* @return The logarithmic temperature derivative of the rate.
*/
[[nodiscard]] virtual double calculate_log_rate_partial_deriv_wrt_T9(
double T9,
double rho,
double Ye,
double mue,
const fourdst::composition::Composition& comp
) const = 0;
/**
* @brief Category of this reaction (e.g., REACLIB, WEAK, LOGICAL_REACLIB).
* @return Enumerated reaction type for runtime dispatch and filtering.
*/
[[nodiscard]] virtual ReactionType type() const = 0;
/**
* @brief Polymorphic deep copy.
* @return A std::unique_ptr owning a new Reaction equal to this one.
*/
[[nodiscard]] virtual std::unique_ptr<Reaction> clone() const = 0;
friend std::ostream& operator<<(std::ostream& os, const Reaction& r) {
os << "Reaction(ID: " << r.id() << ")";
return os;
}
};
class ReaclibReaction : public Reaction {
public:
~ReaclibReaction() override = default;
/**
* @brief Constructs a Reaction object.
* @param id A unique identifier for the reaction.
* @param peName The name in (projectile, ejectile) notation (e.g., "p(p,g)d").
* @param chapter The REACLIB chapter number, defining reaction structure.
* @param reactants A vector of reactant species.
* @param products A vector of product species.
* @param qValue The Q-value of the reaction in MeV.
* @param label The source label for the rate data (e.g., "wc12", "st08").
* @param sets The set of rate coefficients.
* @param reverse True if this is a reverse reaction rate.
*/
ReaclibReaction(
std::string_view id,
std::string_view peName,
int chapter,
const std::vector<fourdst::atomic::Species> &reactants,
const std::vector<fourdst::atomic::Species> &products,
double qValue,
std::string_view label,
const RateCoefficientSet &sets,
bool reverse = false);
/**
* @brief Calculates the reaction rate for a given temperature.
* @param T9 The temperature in units of 10^9 K.
* @param rho Density [Not used in this implementation].
* @param Ye
* @param mue
* @param Y
* @param index_to_species_map
* @return The calculated reaction rate.
*/
[[nodiscard]] double calculate_rate(
double T9,
double rho,
double Ye,
double mue,
const std::vector<double> &Y,
const std::unordered_map<size_t,
fourdst::atomic::Species>& index_to_species_map
) const override;
/**
* @brief Calculates the reaction rate for a given temperature using CppAD types.
* @param T9 The temperature in units of 10^9 K, as a CppAD::AD<double>.
* @param rho Density, as a CppAD::AD<double> [Not used in this implementation].
* @param Ye
* @param mue
* @param Y Molar abundances of species, as a vector of CppAD::AD<double> [Not used in this implementation].
* @param index_to_species_map
* @return The calculated reaction rate, as a CppAD::AD<double>.
*/
[[nodiscard]] CppAD::AD<double> calculate_rate(
CppAD::AD<double> T9,
CppAD::AD<double> rho,
CppAD::AD<double> Ye,
CppAD::AD<double> mue, const std::vector<CppAD::AD<double>>& Y, const std::unordered_map<size_t, fourdst::atomic::Species>& index_to_species_map
) const override;
[[nodiscard]] double calculate_log_rate_partial_deriv_wrt_T9(
double T9,
double rho,
double Ye,
double mue,
const fourdst::composition::Composition& comp
) const override;
/**
* @brief Gets the reaction name in (projectile, ejectile) notation.
* @return The reaction name (e.g., "p(p,g)d").
*/
[[nodiscard]] virtual std::string_view peName() const { return m_peName; }
/**
* @brief Gets the REACLIB chapter number.
* @return The chapter number.
*/
[[nodiscard]] int chapter() const { return m_chapter; }
/**
* @brief Gets the source label for the rate data.
* @return The source label (e.g., "wc12w", "st08").
*/
[[nodiscard]] std::string_view sourceLabel() const { return m_sourceLabel; }
[[nodiscard]] ReactionType type() const override { return ReactionType::REACLIB; }
/**
* @brief Gets the set of rate coefficients.
* @return A const reference to the RateCoefficientSet.
*/
[[nodiscard]] const RateCoefficientSet& rateCoefficients() const { return m_rateCoefficients; }
/**
* @brief Checks if the reaction involves a given species as a reactant or product.
* @param species The species to check for.
* @return True if the species is involved, false otherwise.
*/
[[nodiscard]] bool contains(const fourdst::atomic::Species& species) const override;
/**
* @brief Checks if the reaction involves a given species as a reactant.
* @param species The species to check for.
* @return True if the species is a reactant, false otherwise.
*/
[[nodiscard]] bool contains_reactant(const fourdst::atomic::Species& species) const override;
/**
* @brief Checks if the reaction involves a given species as a product.
* @param species The species to check for.
* @return True if the species is a product, false otherwise.
*/
[[nodiscard]] bool contains_product(const fourdst::atomic::Species& species) const override;
/**
* @brief Gets a set of all unique species involved in the reaction.
* @return An unordered_set of all reactant and product species.
*/
[[nodiscard]] std::unordered_set<fourdst::atomic::Species> all_species() const override;
/**
* @brief Gets a set of all unique reactant species.
* @return An unordered_set of reactant species.
*/
[[nodiscard]] std::unordered_set<fourdst::atomic::Species> reactant_species() const override;
/**
* @brief Gets a set of all unique product species.
* @return An unordered_set of product species.
*/
[[nodiscard]] std::unordered_set<fourdst::atomic::Species> product_species() const override;
/**
* @brief Gets the number of unique species involved in the reaction.
* @return The count of unique species.
*/
[[nodiscard]] size_t num_species() const override;
/**
* @brief Calculates the stoichiometric coefficient for a given species.
* @param species The species for which to find the coefficient.
* @return The stoichiometric coefficient (negative for reactants, positive for products).
*/
[[nodiscard]] int stoichiometry(const fourdst::atomic::Species& species) const override;
/**
* @brief Gets a map of all species to their stoichiometric coefficients.
* @return An unordered_map from species to their integer coefficients.
*/
[[nodiscard]] std::unordered_map<fourdst::atomic::Species, int> stoichiometry() const override;
/**
* @brief Gets the unique identifier of the reaction.
* @return The reaction ID.
*/
[[nodiscard]] std::string_view id() const override { return m_id; }
/**
* @brief Gets the Q-value of the reaction.
* @return The Q-value in whatever units the reaction was defined in (usually MeV).
*/
[[nodiscard]] double qValue() const override { return m_qValue; }
/**
* @brief Gets the vector of reactant species.
* @return A const reference to the vector of reactants.
*/
[[nodiscard]] const std::vector<fourdst::atomic::Species>& reactants() const override { return m_reactants; }
/**
* @brief Gets the vector of product species.
* @return A const reference to the vector of products.
*/
[[nodiscard]] const std::vector<fourdst::atomic::Species>& products() const override { return m_products; }
/**
* @brief Checks if this is a reverse reaction rate.
* @return True if it is a reverse rate, false otherwise.
*/
[[nodiscard]] bool is_reverse() const override { return m_reverse; }
/**
* @brief Calculates the excess energy from the mass difference of reactants and products.
* @return The excess energy in MeV.
*/
[[nodiscard]] double excess_energy() const;
/**
* @brief Compares this reaction with another for equality based on their IDs.
* @param other The other Reaction to compare with.
* @return True if the reaction IDs are the same.
*/
bool operator==(const ReaclibReaction& other) const { return m_id == other.m_id; }
/**
* @brief Compares this reaction with another for inequality.
* @param other The other Reaction to compare with.
* @return True if the reactions are not equal.
*/
bool operator!=(const ReaclibReaction& other) const { return !(*this == other); }
/**
* @brief Computes a hash for the reaction based on its ID.
* @param seed The seed for the hash function.
* @return A 64-bit hash value.
* @details Uses the XXHash64 algorithm on the reaction's ID string.
*/
[[nodiscard]] uint64_t hash(uint64_t seed) const override;
[[nodiscard]] std::unique_ptr<Reaction> clone() const override;
friend std::ostream& operator<<(std::ostream& os, const ReaclibReaction& r) {
return os << "(ReaclibReaction:" << r.m_id << ")";
}
protected:
quill::Logger* m_logger = fourdst::logging::LogManager::getInstance().getLogger("log");
std::string m_id; ///< Unique identifier for the reaction (e.g., "h1+h1=>h2+e+nu").
std::string m_peName; ///< Name of the reaction in (projectile, ejectile) notation (e.g. "p(p,g)d").
int m_chapter; ///< Chapter number from the REACLIB database, defining the reaction structure.
double m_qValue = 0.0; ///< Q-value of the reaction in MeV.
std::vector<fourdst::atomic::Species> m_reactants; ///< Reactants of the reaction.
std::vector<fourdst::atomic::Species> m_products; ///< Products of the reaction.
std::string m_sourceLabel; ///< Source label for the rate data (e.g., "wc12w", "st08").
RateCoefficientSet m_rateCoefficients; ///< The seven rate coefficients.
bool m_reverse = false; ///< Flag indicating if this is a reverse reaction rate.
private:
/**
* @brief Template implementation for calculating the reaction rate.
* @tparam T The numeric type (double or CppAD::AD<double>).
* @param T9 The temperature in units of 10^9 K.
* @return The calculated reaction rate.
* @details The rate is calculated using the standard REACLIB formula:
* `rate = exp(a0 + a1/T9 + a2/T9^(1/3) + a3*T9^(1/3) + a4*T9 + a5*T9^(5/3) + a6*ln(T9))`
*/
template <typename T>
[[nodiscard]] T calculate_rate(const T T9) const {
const T T913 = CppAD::pow(T9, 1.0/3.0);
const T T953 = CppAD::pow(T9, 5.0/3.0);
const T logT9 = CppAD::log(T9);
const T exponent = m_rateCoefficients.a0 +
m_rateCoefficients.a1 / T9 +
m_rateCoefficients.a2 / T913 +
m_rateCoefficients.a3 * T913 +
m_rateCoefficients.a4 * T9 +
m_rateCoefficients.a5 * T953 +
m_rateCoefficients.a6 * logT9;
return CppAD::exp(exponent);
}
};
/**
* @class LogicalReaclibReaction
* @brief Represents a "logical" reaction that aggregates rates from multiple sources.
*
* A LogicalReaclibReaction shares the same reactants and products but combines rates
* from different evaluations (e.g., "wc12" and "st08" for the same physical
* reaction). The total rate is the sum of the individual rates.
* It inherits from Reaction, using the properties of the first provided reaction
* as its base properties (reactants, products, Q-value, etc.).
*/
class LogicalReaclibReaction final : public ReaclibReaction {
public:
/**
* @brief Constructs a LogicalReaction from a vector of `Reaction` objects.
* @param reactions A vector of reactions that represent the same logical process.
* @throws std::runtime_error if the provided reactions have inconsistent Q-values.
*/
explicit LogicalReaclibReaction(const std::vector<ReaclibReaction> &reactions);
/**
* @brief Adds another `Reaction` source to this logical reaction.
* @param reaction The reaction to add.
* @throws std::runtime_error if the reaction has a different `peName`, a duplicate
* source label, or an inconsistent Q-value.
*/
void add_reaction(const ReaclibReaction& reaction);
/**
* @brief Gets the number of source rates contributing to this logical reaction.
* @return The number of aggregated rates.
*/
[[nodiscard]] size_t size() const { return m_rates.size(); }
/**
* @brief Gets the list of source labels for the aggregated rates.
* @return A vector of source label strings.
*/
[[nodiscard]] std::vector<std::string> sources() const { return m_sources; }
/**
* @brief Calculates the total reaction rate by summing all source rates.
* @param T9 The temperature in units of 10^9 K.
* @param rho
* @param Ye
* @param mue
* @param Y
* @param index_to_species_map
* @return The total calculated reaction rate.
*/
[[nodiscard]] double calculate_rate(
double T9,
double rho,
double Ye,
double mue, const std::vector<double> &Y, const std::unordered_map<size_t, fourdst::atomic::Species>& index_to_species_map
) const override;
[[nodiscard]] double calculate_log_rate_partial_deriv_wrt_T9(
double T9,
double rho,
double Ye, double mue, const fourdst::composition::Composition& comp
) const override;
[[nodiscard]] ReactionType type() const override { return ReactionType::LOGICAL_REACLIB; }
[[nodiscard]] std::unique_ptr<Reaction> clone() const override;
/**
* @brief Calculates the total reaction rate using CppAD types.
* @param T9 The temperature in units of 10^9 K, as a CppAD::AD<double>.
* @param rho
* @param Ye
* @param mue
* @param Y
* @param index_to_species_map
* @return The total calculated reaction rate, as a CppAD::AD<double>.
*/
[[nodiscard]] CppAD::AD<double> calculate_rate(
CppAD::AD<double> T9,
CppAD::AD<double> rho,
CppAD::AD<double> Ye,
CppAD::AD<double> mue, const std::vector<CppAD::AD<double>>& Y, const std::unordered_map<size_t,fourdst::atomic::Species>& index_to_species_map
) const override;
/** @name Iterators
* Provides iterators to loop over the rate coefficient sets.
*/
///@{
auto begin() { return m_rates.begin(); }
[[nodiscard]] auto begin() const { return m_rates.cbegin(); }
auto end() { return m_rates.end(); }
[[nodiscard]] auto end() const { return m_rates.cend(); }
///@}
///
friend std::ostream& operator<<(std::ostream& os, const LogicalReaclibReaction& r) {
os << "(LogicalReaclibReaction: " << r.id() << ", reverse: " << r.is_reverse() << ")";
return os;
}
private:
std::vector<std::string> m_sources; ///< List of source labels.
std::vector<RateCoefficientSet> m_rates; ///< List of rate coefficient sets from each source.
private:
/**
* @brief Template implementation for calculating the total reaction rate.
* @tparam T The numeric type (double or CppAD::AD<double>).
* @param T9 The temperature in units of 10^9 K.
* @return The total calculated reaction rate.
* @details This method iterates through all stored `RateCoefficientSet`s,
* calculates the rate for each, and returns their sum.
*/
template <typename T>
[[nodiscard]] T calculate_rate(const T T9) const {
T sum = static_cast<T>(0.0);
const T T913 = CppAD::pow(T9, 1.0/3.0);
const T T953 = CppAD::pow(T9, 5.0/3.0);
const T logT9 = CppAD::log(T9);
// ReSharper disable once CppUseStructuredBinding
for (const auto& rate : m_rates) {
const T exponent = rate.a0 +
rate.a1 / T9 +
rate.a2 / T913 +
rate.a3 * T913 +
rate.a4 * T9 +
rate.a5 * T953 +
rate.a6 * logT9;
sum += CppAD::exp(exponent);
// return sum; // TODO: REMOVE THIS ITS FOR TESTING ONLY
}
return sum;
}
};
class ReactionSet final {
public:
/**
* @brief Constructs a ReactionSet from a vector of reactions.
* @param reactions The initial vector of Reaction objects.
*/
explicit ReactionSet(std::vector<std::unique_ptr<Reaction>>&& reactions);
explicit ReactionSet(const std::vector<Reaction*>& reactions);
ReactionSet();
/**
* @brief Copy constructor.
* @param other The ReactionSet to copy.
*/
ReactionSet(const ReactionSet& other);
/**
* @brief Copy assignment operator.
* @param other The ReactionSet to assign from.
* @return A reference to this ReactionSet.
*/
ReactionSet& operator=(const ReactionSet& other);
/**
* @brief Adds a reaction to the set.
* @param reaction The Reaction to add.
*/
void add_reaction(const Reaction& reaction);
void add_reaction(std::unique_ptr<Reaction>&& reaction);
/**
* @brief Removes a reaction from the set.
* @param reaction The Reaction to remove.
*/
void remove_reaction(const Reaction& reaction);
/**
* @brief Checks if the set contains a reaction with the given ID.
* @param id The ID of the reaction to find.
* @return True if the reaction is in the set, false otherwise.
*/
[[nodiscard]] bool contains(const std::string_view& id) const;
/**
* @brief Checks if the set contains the given reaction.
* @param reaction The Reaction to find.
* @return True if the reaction is in the set, false otherwise.
*/
[[nodiscard]] bool contains(const Reaction& reaction) const;
/**
* @brief Gets the number of reactions in the set.
* @return The size of the set.
*/
[[nodiscard]] size_t size() const { return m_reactions.size(); }
/**
* @brief Removes all reactions from the set.
*/
void clear();
/**
* @brief Checks if any reaction in the set involves the given species.
* @param species The species to check for.
* @return True if the species is involved in any reaction.
*/
[[nodiscard]] bool contains_species(const fourdst::atomic::Species& species) const;
/**
* @brief Checks if any reaction in the set contains the given species as a reactant.
* @param species The species to check for.
* @return True if the species is a reactant in any reaction.
*/
[[nodiscard]] bool contains_reactant(const fourdst::atomic::Species& species) const;
/**
* @brief Checks if any reaction in the set contains the given species as a product.
* @param species The species to check for.
* @return True if the species is a product in any reaction.
*/
[[nodiscard]] bool contains_product(const fourdst::atomic::Species& species) const;
/**
* @brief Accesses a reaction by its index.
* @param index The index of the reaction to access.
* @return A const reference to the Reaction.
* @throws std::out_of_range if the index is out of bounds.
*/
[[nodiscard]] const Reaction& operator[](size_t index) const;
/**
* @brief Accesses a reaction by its ID.
* @param id The ID of the reaction to access.
* @return A const reference to the Reaction.
* @throws std::out_of_range if no reaction with the given ID exists.
*/
[[nodiscard]] const Reaction& operator[](const std::string_view& id) const;
/**
* @brief Compares this set with another for equality.
* @param other The other ReactionSet to compare with.
* @return True if the sets are equal (same size and hash).
*/
bool operator==(const ReactionSet& other) const;
/**
* @brief Compares this set with another for inequality.
* @param other The other ReactionSet to compare with.
* @return True if the sets are not equal.
*/
bool operator!=(const ReactionSet& other) const;
/**
* @brief Computes a hash for the entire set.
* @param seed The seed for the hash function.
* @return A 64-bit hash value.
* @details The algorithm computes the hash of each individual reaction,
* sorts the hashes, and then computes a final hash over the sorted list
* of hashes. This ensures the hash is order-independent.
*/
[[nodiscard]] uint64_t hash(uint64_t seed) const;
/** @name Iterators
* Provides iterators to loop over the reactions in the set.
*/
///@{
auto begin() { return m_reactions.begin(); }
[[nodiscard]] auto begin() const { return m_reactions.cbegin(); }
auto end() { return m_reactions.end(); }
[[nodiscard]] auto end() const { return m_reactions.cend(); }
///@}
///
[[nodiscard]] std::unordered_set<fourdst::atomic::Species> getReactionSetSpecies() const;
friend std::ostream& operator<<(std::ostream& os, const ReactionSet& rs) {
os << "(ReactionSet: {";
int i = 0;
for (const auto& reaction : rs.m_reactions) {
os << *reaction;
if (i < rs.m_reactions.size() - 1) {
os << ", ";
}
}
os << "})";
return os;
}
private:
quill::Logger* m_logger = fourdst::logging::LogManager::getInstance().getLogger("log");
std::vector<std::unique_ptr<Reaction>> m_reactions;
std::string m_id;
std::unordered_map<std::string, size_t> m_reactionNameMap; ///< Maps reaction IDs to Reaction objects for quick lookup.
};
ReactionSet packReactionSet(const ReactionSet& reactionSet);
}