66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
|
#include <graphene/chain/fee_schedule.hpp>
|
||
|
|
|
||
|
|
namespace graphene { namespace chain {
|
||
|
|
|
||
|
|
fee_schedule::fee_schedule()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
fee_schedule fee_schedule::get_default()
|
||
|
|
{
|
||
|
|
fee_schedule result;
|
||
|
|
for( uint32_t i = 0; i < fee_parameters.count(); ++i )
|
||
|
|
{
|
||
|
|
fee_parameters x; x.set_which(i);
|
||
|
|
result.parameters.insert(x);
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct fee_schedule_validate_visitor
|
||
|
|
{
|
||
|
|
typedef result_type void;
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
void operator()( const T& p )const
|
||
|
|
{
|
||
|
|
p.validate();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
void fee_schedule::validate()const
|
||
|
|
{
|
||
|
|
for( const auto& f : parameters )
|
||
|
|
f.visit( fee_schedule_validate_visitor() );
|
||
|
|
}
|
||
|
|
|
||
|
|
struct calc_fee_visitor
|
||
|
|
{
|
||
|
|
typedef result_type asset;
|
||
|
|
|
||
|
|
const fee_parameters& param;
|
||
|
|
calc_fee_visitor( const fee_parameters& p ):param(p){}
|
||
|
|
|
||
|
|
template<typename OpType>
|
||
|
|
asset operator()( const OpType& op )const
|
||
|
|
{
|
||
|
|
return op.calculate_fee( param.get<typename OpType::fee_parameters_type>() );
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
asset fee_schedule::calculate_fee( const operation& op, const price& core_exchange_rate )const
|
||
|
|
{
|
||
|
|
fee_parameters params; params.set_which(op.which());
|
||
|
|
auto itr = parameters.find(params);
|
||
|
|
if( itr != parameters.end() ) params = *itr;
|
||
|
|
share_type base_value op.visit( calc_fee_visitor( params ) );
|
||
|
|
auto scaled = fc::uint128(base_value.value) * scale_factor;
|
||
|
|
scaled /= GRAPHENE_100_PERCENT;
|
||
|
|
FC_ASSERT( scaled <= GRAPHENE_MAX_SHARE_SUPPLY );
|
||
|
|
auto result = asset( scaled.to_uint64(), 0 ) * core_exchange_rate;
|
||
|
|
FC_ASSERT( result.amount <= GRAPHENE_MAX_SHARE_SUPPLY );
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
} } // graphene::chain
|