Implement virtual op for settlement cancel #250

libraries/app/impacted.cpp

@@ -37,7 +37,10 @@ struct get_impacted_account_visitor
    }
 
    void operator()( const limit_order_create_operation& op ) {}
-   void operator()( const limit_order_cancel_operation& op ) {}
+   void operator()( const limit_order_cancel_operation& op )
+   {
+      _impacted.insert( op.fee_paying_account );
+   }
    void operator()( const call_order_update_operation& op ) {}
    void operator()( const fill_order_operation& op )
    {
@@ -182,6 +185,12 @@ struct get_impacted_account_visitor
       for( const auto& in : op.inputs )
          add_authority_accounts( _impacted, in.owner );
    }
+
+   void operator()( const asset_settle_cancel_operation& op )
+   {
+      _impacted.insert( op.account );
+   }
+
 };
 
 void operation_get_impacted_accounts( const operation& op, flat_set<account_id_type>& result )

libraries/chain/db_market.cpp

@@ -93,7 +93,11 @@ void database::cancel_order(const force_settlement_object& order, bool create_vi
 
    if( create_virtual_op )
    {
-      // TODO: create virtual op
+      asset_settle_cancel_operation vop;
+      vop.settlement = order.id;
+      vop.account = order.owner;
+      vop.amount = order.balance;
+      push_applied_operation( vop );
    }
 }
 
@@ -109,7 +113,10 @@ void database::cancel_order( const limit_order_object& order, bool create_virtua
 
    if( create_virtual_op )
    {
-      // TODO: create a virtual cancel operation
+      limit_order_cancel_operation vop;
+      vop.order = order.id;
+      vop.fee_paying_account = order.seller;
+      push_applied_operation( vop );
    }
 
    remove(order);

libraries/chain/include/graphene/chain/protocol/asset_ops.hpp

@@ -189,6 +189,29 @@ namespace graphene { namespace chain {
       void            validate()const;
    };
 
+   /**
+    * Virtual op generated when force settlement is cancelled.
+    */
+
+   struct asset_settle_cancel_operation : public base_operation
+   {
+      struct fee_parameters_type { };
+
+      asset           fee;
+      force_settlement_id_type settlement;
+      /// Account requesting the force settlement. This account pays the fee
+      account_id_type account;
+      /// Amount of asset to force settle. This must be a market-issued asset
+      asset           amount;
+      extensions_type extensions;
+
+      account_id_type fee_payer()const { return account; }
+      void            validate()const {}
+
+      share_type calculate_fee(const fee_parameters_type& params)const
+      { return 0; }
+   };
+
    /**
     * @ingroup operations
     */
@@ -407,6 +430,7 @@ FC_REFLECT( graphene::chain::bitasset_options,
 FC_REFLECT( graphene::chain::asset_create_operation::fee_parameters_type, (symbol3)(symbol4)(long_symbol)(price_per_kbyte) )
 FC_REFLECT( graphene::chain::asset_global_settle_operation::fee_parameters_type, (fee) )
 FC_REFLECT( graphene::chain::asset_settle_operation::fee_parameters_type, (fee) )
+FC_REFLECT( graphene::chain::asset_settle_cancel_operation::fee_parameters_type, )
 FC_REFLECT( graphene::chain::asset_fund_fee_pool_operation::fee_parameters_type, (fee) )
 FC_REFLECT( graphene::chain::asset_update_operation::fee_parameters_type, (fee)(price_per_kbyte) )
 FC_REFLECT( graphene::chain::asset_update_bitasset_operation::fee_parameters_type, (fee) )
@@ -447,6 +471,7 @@ FC_REFLECT( graphene::chain::asset_update_feed_producers_operation,
 FC_REFLECT( graphene::chain::asset_publish_feed_operation,
             (fee)(publisher)(asset_id)(feed)(extensions) )
 FC_REFLECT( graphene::chain::asset_settle_operation, (fee)(account)(amount)(extensions) )
+FC_REFLECT( graphene::chain::asset_settle_cancel_operation, (fee)(settlement)(account)(amount)(extensions) )
 FC_REFLECT( graphene::chain::asset_global_settle_operation, (fee)(issuer)(asset_to_settle)(settle_price)(extensions) )
 FC_REFLECT( graphene::chain::asset_issue_operation,
             (fee)(issuer)(asset_to_issue)(issue_to_account)(memo)(extensions) )

libraries/chain/include/graphene/chain/protocol/operations.hpp

@@ -28,7 +28,7 @@ namespace graphene { namespace chain {
             limit_order_create_operation,
             limit_order_cancel_operation,
             call_order_update_operation,
-            fill_order_operation,
+            fill_order_operation,           // VIRTUAL
             account_create_operation,
             account_update_operation,
             account_whitelist_operation,
@@ -65,7 +65,9 @@ namespace graphene { namespace chain {
             override_transfer_operation,
             transfer_to_blind_operation,
             blind_transfer_operation,
-            transfer_from_blind_operation
+            transfer_from_blind_operation,
+
+            asset_settle_cancel_operation  // VIRTUAL
          > operation;
 
    /// @} // operations group