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Issue #393 - HARDFORK to give cash back upon canceling an order

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This commit is contained in:
Daniel Larimer 2015-10-23 13:26:11 -04:00
parent 44b2198f97
commit 6e554260e5
1 changed files with 24 additions and 3 deletions
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27
libraries/chain/market_evaluator.cpp
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@ -92,12 +92,33 @@ asset limit_order_cancel_evaluator::do_apply(const limit_order_cancel_operation&
auto quote_asset = _order->sell_price.quote.asset_id; auto quote_asset = _order->sell_price.quote.asset_id;
auto refunded = _order->amount_for_sale(); auto refunded = _order->amount_for_sale();
db().cancel_order(*_order, false /* don't create a virtual op*/); if( true ) // HARD FORK d.head_block_time() >
{
const auto& fees = d.current_fee_schedule();
asset create_fee = fees.calculate_fee( limit_order_create_operation() );
// then the create fee was only the network fee and not the
// full create_fee
const auto& gprops = d.get_global_properties();
auto cashback_percent = GRAPHENE_100_PERCENT - gprops.parameters.network_percent_of_fee;
auto cashback_amount = (create_fee.amount * cashback_percent) / GRAPHENE_100_PERCENT;
create_fee.amount -= cashback_amount;
const auto& core_asset_data = asset_id_type(0)(d).dynamic_asset_data_id(d);
d.modify( core_asset_data, [&]( asset_dynamic_data_object& addo ) {
addo.accumulated_fees -= create_fee.amount;
});
d.adjust_balance( o.fee_paying_account, create_fee );
}
d.cancel_order(*_order, false /* don't create a virtual op*/);
// Possible optimization: order can be called by canceling a limit order iff the canceled order was at the top of the book. // Possible optimization: order can be called by canceling a limit order iff the canceled order was at the top of the book.
// Do I need to check calls in both assets? // Do I need to check calls in both assets?
db().check_call_orders(base_asset(d)); d.check_call_orders(base_asset(d));
db().check_call_orders(quote_asset(d)); d.check_call_orders(quote_asset(d));
return refunded; return refunded;
} FC_CAPTURE_AND_RETHROW( (o) ) } } FC_CAPTURE_AND_RETHROW( (o) ) }