add dispatch method to contract

contracts/currency/currency.cpp

@@ -18,11 +18,6 @@ struct CurrencyAccount {
    static Name tableId() { return Name("singlton"); }
 };
 
-void init()  {
-   ///        scope       key        value
-   Db::store( "currency", "account", CurrencyAccount( 1000ll*1000ll*1000ll ) );
-}
-
 
 void apply_currency_transfer() {
    const auto& transfer  = currentMessage<Transfer>();
@@ -47,5 +42,21 @@ void apply_currency_transfer() {
    Db::store( transfer.to, "account", to_account ); 
 }
 
+export "C" {
+    void init()  {
+       ///        scope       key        value
+       Db::store( "currency", "account", CurrencyAccount( 1000ll*1000ll*1000ll ) );
+    }
+
 
+//   void validate( uint64_t code, uint64_t action ) { }
+//   void precondition( uint64_t code, uint64_t action ) { }
+   /**
+    *  The apply method implements the dispatch of events to this contract
+    */
+   void apply( uint64_t code, uint64_t action ) {
+      assert( code == currentCode() );
+      if( action == "transfer" ) apply_currency_transfer();
+   }
+}
 

contracts/exchange/exchange.cpp

@@ -50,13 +50,6 @@ struct Account {
 };
 
 
-extern "C" {
-void init() {
-   setAuthority( "currencya", "transfer", "anyone" );
-   setAuthority( "currencyb", "transfer", "anyone" );
-   registerHandler( "apply", "currencya", "transfer" );
-   registerHandler( "apply", "currencyb", "transfer" );
-}
 
 /**
  *  This method is called after the "transfer" action of code
@@ -116,4 +109,26 @@ void apply_currencyb_transfer() {
    }
 }
 
-} // extern "C"
+
+export "C" {
+   void init() {
+      setAuthority( "currencya", "transfer", "anyone" );
+      setAuthority( "currencyb", "transfer", "anyone" );
+      registerHandler( "apply", "currencya", "transfer" );
+      registerHandler( "apply", "currencyb", "transfer" );
+   }
+
+//   void validate( uint64_t code, uint64_t action ) { }
+//   void precondition( uint64_t code, uint64_t action ) { }
+   /**
+    *  The apply method implements the dispatch of events to this contract
+    */
+   void apply( uint64_t code, uint64_t action ) {
+      if( code == "currencya" ) {
+        if( action == "transfer" ) apply_currencya_transfer();
+      } else if( code == "currencyb" ) {
+        if( action == "transfer" ) apply_currencyb_transfer();
+      } else {
+      }
+   }
+}