ValueOperationAbstraction.hpp

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#pragma once
 
#include <ext/array>
#include <ext/memory>
 
#include <common/TypeQualifiers.hpp>
 
#include <abstraction/ValueHolder.hpp>
#include <common/AbstractionHelpers.hpp>
 
namespace abstraction {
 
template < class ReturnType >
class ValueOperationAbstraction : virtual public OperationAbstraction {
public:
    template < typename ... ParamTypes, typename Callable >
    static inline std::shared_ptr < abstraction::Value > run_helper ( Callable callback, const ext::array < std::shared_ptr < abstraction::Value >, sizeof ... ( ParamTypes ) > & inputs ) {
        return std::make_shared < abstraction::ValueHolder < ReturnType > > ( abstraction::apply < ParamTypes ... > ( callback, inputs ), ! std::is_lvalue_reference_v < ReturnType > );
    }
 
    abstraction::TypeQualifiers::TypeQualifierSet getReturnTypeQualifiers ( ) const override {
        return abstraction::TypeQualifiers::typeQualifiers < ReturnType > ( );
    }
 
    ext::type_index getReturnTypeIndex ( ) const override {
        return ext::type_index ( typeid ( ReturnType ) );
    }
 
};
 
template < >
class ValueOperationAbstraction < void > : virtual public OperationAbstraction {
public:
    template < typename ... ParamTypes, typename Callable >
    static inline std::shared_ptr < abstraction::Value > run_helper ( Callable callback, const ext::array < std::shared_ptr < abstraction::Value >, sizeof ... ( ParamTypes ) > & inputs ) {
        abstraction::apply < ParamTypes ... > ( callback, inputs );
        return std::make_shared < abstraction::Void > ( );
    }
 
    ext::type_index getReturnTypeIndex ( ) const override;
 
    abstraction::TypeQualifiers::TypeQualifierSet getReturnTypeQualifiers ( ) const override;
};
 
} /* namespace abstraction */