cwFlow,cwFlowTypes : Changes to fix problems with communicating between connected variables.

Added _set_var_template(), _var_setter()

cwFlow.cpp

@@ -183,7 +183,17 @@ namespace cw
       return rc;
     }
 
-    
+    void _connect_vars( variable_t* src_var, variable_t* in_var )
+    {
+      // connect in_var into src_var's outgoing var chain
+      in_var->connect_link  = src_var->connect_link;
+      src_var->connect_link = in_var;
+
+      assert( src_var->value != nullptr );
+          
+      in_var->value    = src_var->value;
+      in_var->src_var = src_var;
+    }
 
     rc_t _setup_input( flow_t* p, instance_t* in_inst, const char* in_var_label, const char* src_label_arg )
     {
@@ -244,14 +254,7 @@ namespace cw
         goto errLabel;
       }
 
-
+      _connect_vars( src_var, in_var );
-      // connect in_var into src_var's outgoing var chain
-      in_var->connect_link = src_var->connect_link;
-      src_var->connect_link = in_var;
-      
-
-      in_var->value   = src_var->value;
-      
 
       //cwLogInfo("'%s:%s' connected to source '%s:%s' %p.", in_inst->label, in_var_label, src_inst->label, suffix, in_var->value );
       
@@ -301,8 +304,8 @@ namespace cw
           if( max_vid == kInvalidId || var->vid > max_vid )
             max_vid = var->vid;
 
-          if( var->chIdx != kAnyChIdx && var->chIdx > max_chIdx )
+          if( var->chIdx != kAnyChIdx && (var->chIdx+1) > max_chIdx )
-            max_chIdx = var->chIdx;
+            max_chIdx = (var->chIdx + 1);
 
         }
       }
@@ -332,17 +335,19 @@ namespace cw
               variable_t* v0 = inst->varMapA[idx];
               rc = cwLogError(kInvalidStateRC,"The variable '%s' id:%i ch:%i and '%s' id:%i ch:%i share the same variable map position on instance: %s. This is usually cased by duplicate variable id's.",
                               v0->label,v0->vid,v0->chIdx, var->label,var->vid,var->chIdx,inst->label);
+
               goto errLabel;
             }
 
             // assign this variable to a map position
             inst->varMapA[ idx ] = var;
 
-            if( var->value == nullptr )
+            if( var->chIdx != kAnyChIdx && var->value == nullptr )
             {
               rc = cwLogError(kInvalidStateRC,"The value of the variable '%s' ch:%i on instance:'%s' has not been set.",var->label,var->chIdx,inst->label);
               goto errLabel;
             }
+
           }
         
       }
@@ -352,6 +357,49 @@ namespace cw
       
     }
 
+    void _complete_input_connections( instance_t* inst )
+    {
+      for(variable_t* var=inst->varL; var!=nullptr; var=var->var_link)
+        if(var->chIdx == kAnyChIdx && is_connected_to_external_proc(var) )
+        {
+
+          variable_t* base_src_var = var->src_var;
+
+          // since 'var' is on the 'any' channel the 'src' var must also be on the 'any' channel
+          assert( base_src_var->chIdx == kAnyChIdx );
+          
+          printf("%s %s\n",inst->label,var->label);
+          for(variable_t* in_var = var->ch_link; in_var != nullptr; in_var=in_var->ch_link)
+          {
+            
+            
+            variable_t* svar = base_src_var;
+            for(; svar!=nullptr; svar=svar->ch_link)
+              if( svar->chIdx == in_var->chIdx )
+                break;
+
+            _connect_vars( svar==nullptr ? base_src_var : svar, in_var);
+          }
+        }
+    }
+    
+    rc_t _call_value_func_on_all_variables( instance_t* inst )
+    {
+      rc_t rc  = kOkRC;
+      rc_t rc1 = kOkRC;
+      
+      for(unsigned i=0; i<inst->varMapN; ++i)
+        if( inst->varMapA[i] != nullptr && inst->varMapA[i]->vid != kInvalidId )
+        {
+          variable_t* var = inst->varMapA[i];
+          
+          if((rc = var->inst->class_desc->members->value( var->inst, var )) != kOkRC )
+            rc1 = cwLogError(rc,"The proc instance '%s' reported an invalid valid on variable:%s chIdx:%i.", var->inst->label, var->label, var->chIdx );
+        }
+      
+      return rc1;
+    }
+
     rc_t _preset_channelize_vars( instance_t* inst, const char* type_src_label, const char* preset_label, const object_t* preset_cfg )
     {
       rc_t rc = kOkRC;
@@ -384,12 +432,12 @@ namespace cw
         if( value->is_list() )
         {
           for(unsigned chIdx=0; chIdx<value->child_count(); ++chIdx)
-            if((rc = var_channelize( inst, value_label, chIdx, value->child_ele(chIdx), dummy )) != kOkRC )
+            if((rc = var_channelize( inst, value_label, chIdx, value->child_ele(chIdx), kInvalidId, dummy )) != kOkRC )
               goto errLabel;
         }
         else // otherwise a single value was given
         {          
-          if((rc = var_channelize( inst, value_label, kAnyChIdx, value, dummy )) != kOkRC )
+          if((rc = var_channelize( inst, value_label, kAnyChIdx, value, kInvalidId, dummy )) != kOkRC )
             goto errLabel;
         }
         
@@ -626,7 +674,7 @@ namespace cw
       // that were expressed with a list have numeric channel indexes assigned.
 
 
-      // TODO: Should the 'all' variable be removed for variables that have numeric channel indexes.
+      // TODO: Should the 'all' variable be removed for variables that have numeric channel indexes?
 
       // connect the variable lists in the instance 'in' dictionary
       if( pvars.in_dict != nullptr )
@@ -681,6 +729,11 @@ namespace cw
       if((rc =_create_instance_var_map( inst )) != kOkRC )
         goto errLabel;
       
+      _complete_input_connections(inst);
+      
+      if((rc = _call_value_func_on_all_variables( inst )) != kOkRC )
+        goto errLabel;
+      
       // insert an instance in the network
       if( p->network_tail == nullptr )
       {
@@ -787,7 +840,7 @@ namespace cw
       variable_t* var  = nullptr;
 
       // locate the proc instance
-      if((inst = instance_find(p,inst_label)) != nullptr )
+      if((inst = instance_find(p,inst_label)) == nullptr )
       {
         rc = cwLogError(kInvalidIdRC,"Unknown proc instance label '%s'.", cwStringNullGuard(inst_label));
         goto errLabel;
@@ -886,7 +939,7 @@ cw::rc_t cw::flow::create( handle_t&          hRef,
     // create the instance
     if( (rc= _create_instance( p, inst_cfg ) ) != kOkRC )
     {
-      rc = cwLogError(rc,"The instantiation at network index %i is invalid.",i);
+      rc = cwLogError(rc,"The instantiation at proc index %i is invalid.",i);
       goto errLabel;
       
     }
@@ -983,6 +1036,7 @@ cw::rc_t cw::flow::apply_preset( handle_t h, const char* presetLabel )
         goto errLabel;
       }
 
+      // if the preset value is a string then look it up in the class dictionary
       if( preset_value_cfg->is_string() )
       {
         const char* class_preset_label;
@@ -990,10 +1044,15 @@ cw::rc_t cw::flow::apply_preset( handle_t h, const char* presetLabel )
         _class_preset_channelize_vars(inst, class_preset_label );
       }
       else
+        // if the preset value is a dict then apply it directly
         if( preset_value_cfg->is_dict() )
         {
-          printf("Not implemented.\n");
+          if((rc =  _preset_channelize_vars( inst, "network", presetLabel, preset_value_cfg )) != kOkRC )
-          assert(0);
+          {
+            rc = cwLogError(rc,"The preset  '%s' application failed on instance '%s'.", presetLabel, inst_label );
+            goto errLabel;
+          }
+          
         }
         else
         {

cwFlowTypes.cpp

@@ -437,29 +437,143 @@ namespace cw
     rc_t _var_broadcast_new_value( variable_t* var )
     {
       rc_t rc = kOkRC;
-
+      /*
       // notify each connected var that the value has changed
       for(variable_t* con_var = var->connect_link; con_var!=nullptr; con_var=con_var->connect_link)
         if((rc = con_var->inst->class_desc->members->value( con_var->inst, con_var )) != kOkRC )
           break;
+      */
+      return rc;
+    }
+
+    template< typename T >
+    void _var_setter( variable_t* var, T val )
+    {
+      cwLogError(kAssertFailRC,"Unimplemented variable setter.");
+      assert(0);
+    }
+
+    template<>
+    void _var_setter<bool>( variable_t* var, bool val )
+    {
+      var->local_value.u.b   = val;
+      var->local_value.flags = kBoolTFl;
+      cwLogMod("%s.%s ch:%i %i (bool).",var->inst->label,var->label,var->chIdx,val);
+    }
+
+    template<>
+    void _var_setter<unsigned>( variable_t* var, unsigned val )
+    {
+      var->local_value.u.u   = val;
+      var->local_value.flags = kUIntTFl;
+      cwLogMod("%s.%s ch:%i %i (uint).",var->inst->label,var->label,var->chIdx,val);
+    }
+
+    template<>
+    void _var_setter<int>( variable_t* var, int val )
+    {
+      var->local_value.u.i   = val;
+      var->local_value.flags = kIntTFl;
+      cwLogMod("%s.%s ch:%i %i (int).",var->inst->label,var->label,var->chIdx,val);
+    }
+
+    template<>
+    void _var_setter<float>( variable_t* var, float val )
+    {
+      var->local_value.u.f   = val;
+      var->local_value.flags = kFloatTFl;
+      cwLogMod("%s.%s ch:%i %f (float).",var->inst->label,var->label,var->chIdx,val);
+    }
+
+    template<>
+    void _var_setter<double>( variable_t* var, double val )
+    {
+      var->local_value.u.d   = val;
+      var->local_value.flags = kDoubleTFl;
+      cwLogMod("%s.%s ch:%i %f (double).",var->inst->label,var->label,var->chIdx,val);
+    }
+
+    template<>
+    void _var_setter<const char*>( variable_t* var, const char* val )
+    {      
+      var->local_value.u.s   = mem::duplStr(val);
+      var->local_value.flags = kStringTFl;
+      cwLogMod("%s.%s ch:%i %s (string).",var->inst->label,var->label,var->chIdx,val);
+    }
+
+    template<>
+    void _var_setter<abuf_t*>( variable_t* var, abuf_t* val )
+    {
+      var->local_value.u.abuf   = val;
+      var->local_value.flags = kABufTFl;
+      cwLogMod("%s.%s ch:%i %s (abuf).",var->inst->label,var->label,var->chIdx,abuf==nullptr ? "null" : "valid");
+    }
+    
+    template<>
+    void _var_setter<fbuf_t*>( variable_t* var, fbuf_t* val )
+    {
+      var->local_value.u.fbuf = val;
+      var->local_value.flags  = kFBufTFl;
+      cwLogMod("%s.%s ch:%i %s (fbuf).",var->inst->label,var->label,var->chIdx,fbuf==nullptr ? "null" : "valid");
+    }
+    
+    template< typename T >
+    rc_t _var_set_template( variable_t* var, unsigned typeFlag, T val )
+    {
+      rc_t rc;
+
+      if((rc = _validate_var_assignment( var, typeFlag )) != kOkRC )
+        return rc;
+
+      // If the instance is fully initialized ...
+      if( var->inst->varMapA != nullptr )
+      {
+        // ... then inform the proc. that the value changed
+        // (we don't want to do call to occur if we are inside or prior to 'proc.create()' 
+        // call because calls' to 'proc.value()' will see the instance in a incomplete state)
+        rc = var->inst->class_desc->members->value( var->inst, var );
+      }
+
+      if( rc == kOkRC )
+      {
+        // release the current value
+        _value_release(&var->local_value);
+
+        // set the new local value
+        _var_setter(var,val);
+
+        // make the var point to the local value
+        var->value = &var->local_value;
+
+      
+        // send the value to connected downstream proc's
+        rc = _var_broadcast_new_value( var );
+      }
       
       return rc;
     }
+    
 
     rc_t _var_set( variable_t* var, bool val )
     {
       rc_t rc;
       if((rc = _validate_var_assignment( var, kBoolTFl )) != kOkRC )
         return rc;
+
+      if((rc = var->inst->class_desc->members->value( var->inst, var )) == kOkRC )
+      {
+
+        _value_release(&var->local_value);
+        var->local_value.u.b   = val;
+        var->local_value.flags = kBoolTFl;
+        var->value             = &var->local_value;
+
+        cwLogMod("%s.%s ch:%i %i (bool).",var->inst->label,var->label,var->chIdx,val);
+
+        rc = _var_broadcast_new_value( var );
+      }
       
-      _value_release(&var->local_value);
+      return rc;
-      var->local_value.u.b   = val;
-      var->local_value.flags = kBoolTFl;
-      var->value             = &var->local_value;
-
-      cwLogMod("%s.%s ch:%i %i (bool).",var->inst->label,var->label,var->chIdx,val);
-
-      return _var_broadcast_new_value( var );        
     }
     
     rc_t _var_set( variable_t* var, unsigned val )
@@ -467,16 +581,20 @@ namespace cw
       rc_t rc;
       if((rc = _validate_var_assignment( var, kUIntTFl )) != kOkRC )
         return rc;
-      
-      _value_release(&var->local_value);
-      var->local_value.u.u   = val;
-      var->local_value.flags = kUIntTFl;
-      var->value             = &var->local_value;
 
-      cwLogMod("%s.%s ch:%i %i (uint_t).",var->inst->label,var->label,var->chIdx,val);
+      if((rc = var->inst->class_desc->members->value( var->inst, var )) == kOkRC )
+      {
+        _value_release(&var->local_value);
+        var->local_value.u.u   = val;
+        var->local_value.flags = kUIntTFl;
+        var->value             = &var->local_value;
+
+        cwLogMod("%s.%s ch:%i %i (uint_t).",var->inst->label,var->label,var->chIdx,val);
       
-      return _var_broadcast_new_value( var );
+       _var_broadcast_new_value( var );
-        
+      }
+      
+      return rc;
     }
     
     rc_t _var_set( variable_t* var, int val )
@@ -576,27 +694,37 @@ namespace cw
       return _var_broadcast_new_value( var );
     }
 
+
+    bool is_connected_to_external_proc( const variable_t* var )
+    {
+      return var->src_var != nullptr && var->value != nullptr && var->value != &var->local_value;
+    }
+
     template< typename T >
-    rc_t _var_set_driver( variable_t* var, T value )
+    rc_t _var_set_driver( variable_t* var, unsigned typeFlag, T value )
     {
       rc_t rc;
 
+      // if this variable is fed from the output of an external proc - then it's local value cannot be set
+      if(is_connected_to_external_proc(var)   )
+        return kOkRC;
+      
+
       // if this assignment targets a specific channel ...
       if( var->chIdx != kAnyChIdx )
       {
-        rc = _var_set(var,value); // ...  then set it alone
+        rc = _var_set_template( var, typeFlag, value ); // ...  then set it alone
       }
       else // ... otherwise set all channels.
       {
         for(; var!=nullptr; var=var->ch_link)
-          if((rc = _var_set(var,value)) != kOkRC )
+          if((rc = _var_set_template( var, typeFlag, value )) != kOkRC)
             break;
       }
 
       return rc;
     }
 
-
     
     rc_t  _var_register_and_set( instance_t* inst, const char* var_label, unsigned vid, unsigned chIdx, abuf_t* abuf )
     {
@@ -606,7 +734,7 @@ namespace cw
         return rc;
 
       if( var != nullptr )
-        _var_set_driver( var, abuf );
+        _var_set_driver( var, kABufTFl, abuf );
 
       return rc;
     }
@@ -619,7 +747,7 @@ namespace cw
         return rc;
 
       if( var != nullptr )
-        _var_set_driver( var, fbuf );
+        _var_set_driver( var, kFBufTFl, fbuf );
 
       return rc;
     }
@@ -628,13 +756,15 @@ namespace cw
     {
       rc_t rc = kOkRC;
 
-      switch( var->varDesc->type & kTypeMask )
+      unsigned typeFlag = var->varDesc->type & kTypeMask;
+      
+      switch( typeFlag )
       {
         case kBoolTFl:
           {
             bool v;
             if((rc = value->value(v)) == kOkRC )
-              rc = _var_set_driver( var, v );
+              rc = _var_set_driver( var, typeFlag, v );
           }
           break;
           
@@ -642,7 +772,7 @@ namespace cw
           {
             unsigned v;
             if((rc = value->value(v)) == kOkRC )
-              rc = _var_set_driver( var, v );
+              rc = _var_set_driver( var, typeFlag, v );
           }
           break;
           
@@ -650,7 +780,7 @@ namespace cw
           {
             int v;
             if((rc = value->value(v)) == kOkRC )
-              rc = _var_set_driver( var, v );
+              rc = _var_set_driver( var, typeFlag, v );
           }
           break;
           
@@ -658,7 +788,7 @@ namespace cw
           {
             float v;
             if((rc = value->value(v)) == kOkRC )
-              rc = _var_set_driver( var, v );
+              rc = _var_set_driver( var, typeFlag, v );
           }
           break;
 
@@ -666,7 +796,7 @@ namespace cw
           {
             double v;
             if((rc = value->value(v)) == kOkRC )
-              rc = _var_set_driver( var, v );
+              rc = _var_set_driver( var, typeFlag, v );
           }
           break;
           
@@ -674,7 +804,7 @@ namespace cw
           {
             const char* v;
             if((rc = value->value(v)) == kOkRC )
-              rc = _var_set_driver( var, v );
+              rc = _var_set_driver( var, typeFlag, v );
           }
           break;
 
@@ -692,11 +822,11 @@ namespace cw
 
     rc_t  _var_map_id_to_index(  instance_t* inst, unsigned vid, unsigned chIdx, unsigned& idxRef )
     {
-      unsigned idx = vid * inst->varMapChN + (chIdx == kAnyChIdx ? 0 : chIdx);
+      unsigned idx = vid * inst->varMapChN + (chIdx == kAnyChIdx ? 0 : (chIdx+1));
 
       // verify that the map idx is valid
       if( idx >= inst->varMapN )
-        return cwLogError(kAssertFailRC,"The variable map positioning location %i is out of the range % on instance '%s' vid:%i ch:%i.", idx, inst->varMapN, inst->label,vid,chIdx);
+        return cwLogError(kAssertFailRC,"The variable map positioning location %i is out of the range %i on instance '%s' vid:%i ch:%i.", idx, inst->varMapN, inst->label,vid,chIdx);
 
       idxRef = idx;
   
@@ -820,9 +950,10 @@ namespace cw
 
     void _var_print( const variable_t* var )
     {
-      const char* local_label = var->value==nullptr || var->value == &var->local_value ? "local" : "     ";
+      //const char* local_label = var->value==nullptr || var->value == &var->local_value ? "local" : "     ";
+      const char* conn_label  = is_connected_to_external_proc(var) ? "extern" : "      ";
     
-      printf("  %20s id:%4i ch:%3i : %s  : ", var->label, var->vid, var->chIdx, local_label );
+      printf("  %20s id:%4i ch:%3i : %s  : ", var->label, var->vid, var->chIdx, conn_label );
     
       if( var->value == nullptr )
         _value_print( &var->local_value );
@@ -1095,7 +1226,7 @@ cw::rc_t cw::flow::var_create( instance_t* inst, const char* var_label, unsigned
   return rc;
 }
 
-cw::rc_t  cw::flow::var_channelize( instance_t* inst, const char* var_label, unsigned chIdx, const object_t* value_cfg, variable_t*& varRef )
+cw::rc_t  cw::flow::var_channelize( instance_t* inst, const char* var_label, unsigned chIdx, const object_t* value_cfg, unsigned vid, variable_t*& varRef )
 {
   rc_t        rc  = kOkRC;
   variable_t* var = nullptr;
@@ -1124,7 +1255,7 @@ cw::rc_t  cw::flow::var_channelize( instance_t* inst, const char* var_label, uns
   if( var == nullptr && chIdx != kAnyChIdx )
   {
     // create the channelized var
-    if((rc = _var_create( inst, var_label, kInvalidId, chIdx, value_cfg, var )) != kOkRC )
+    if((rc = _var_create( inst, var_label, vid, chIdx, value_cfg, var )) != kOkRC )
       goto errLabel;
 
     // if no value was set then set the value from the 'any' channel
@@ -1247,12 +1378,17 @@ cw::rc_t cw::flow::var_register( instance_t* inst, const char* var_label, unsign
   }
   else // an exact match was not found - channelize the variable
   {
-    if((rc = var_channelize(inst,var_label,chIdx,value_cfg,var)) != kOkRC )
+    if((rc = var_channelize(inst,var_label,chIdx,value_cfg,vid,var)) != kOkRC )
       goto errLabel;
   }
 
   var->vid = vid;
   varRef   = var;
+
+  if((var = _var_find_on_label_and_ch(inst,var_label,kAnyChIdx)) != nullptr )
+    var->vid = vid;
+  else
+    rc = cwLogError(kInvalidStateRC,"The variable '%s' instance '%s' has no base channel.", var_label, inst->label, chIdx);
   
  errLabel:
   if( rc != kOkRC )
@@ -1331,7 +1467,7 @@ cw::rc_t cw::flow::var_set( instance_t* inst, unsigned vid, unsigned chIdx, bool
   variable_t* var = nullptr;
   
   if((rc = _var_find_to_set(inst, vid, chIdx, kBoolTFl, var )) == kOkRC )
-    _var_set_driver( var, val );
+    _var_set_driver( var, kBoolTFl, val );
   
   return rc;    
 }
@@ -1342,7 +1478,7 @@ cw::rc_t cw::flow::var_set( instance_t* inst, unsigned vid, unsigned chIdx, uint
   variable_t* var = nullptr;
   
   if((rc = _var_find_to_set(inst, vid, chIdx, kUIntTFl, var )) == kOkRC )
-    _var_set_driver( var, val );
+    _var_set_driver( var, kUIntTFl, val );
   
   return rc;    
 }
@@ -1353,7 +1489,7 @@ cw::rc_t cw::flow::var_set( instance_t* inst, unsigned vid, unsigned chIdx, int_
   variable_t* var = nullptr;
   
   if((rc = _var_find_to_set(inst, vid, chIdx, kIntTFl, var )) == kOkRC )
-    _var_set_driver( var, val );
+    _var_set_driver( var, kIntTFl, val );
   
   return rc;    
 }
@@ -1364,7 +1500,7 @@ cw::rc_t cw::flow::var_set( instance_t* inst, unsigned vid, unsigned chIdx, floa
   variable_t* var = nullptr;
   
   if((rc = _var_find_to_set(inst, vid, chIdx, kFloatTFl, var )) == kOkRC )
-    _var_set_driver( var, val );
+    _var_set_driver( var, kFloatTFl, val );
   
   return rc;    
 }
@@ -1375,7 +1511,7 @@ cw::rc_t cw::flow::var_set( instance_t* inst, unsigned vid, unsigned chIdx, doub
   variable_t* var = nullptr;
   
   if((rc = _var_find_to_set(inst, vid, chIdx, kDoubleTFl, var )) == kOkRC )
-    _var_set_driver( var, val );
+    _var_set_driver( var, kDoubleTFl, val );
   
   return rc;    
 }
@@ -1386,7 +1522,7 @@ cw::rc_t cw::flow::var_set( instance_t* inst, unsigned vid, unsigned chIdx, cons
   variable_t* var = nullptr;
   
   if((rc = _var_find_to_set(inst, vid, chIdx, kStringTFl, var )) == kOkRC )
-    _var_set_driver( var, val );
+    _var_set_driver( var, kStringTFl, val );
   
   return rc;    
 }

cwFlowTypes.h

@@ -165,6 +165,7 @@ namespace cw
       value_t              local_value;  // the local value instance (actual value if this is not a 'src' variable)
       value_t*             value;        // pointer to the value associated with this variable   
       unsigned             chIdx;        // channel index
+      struct variable_str* src_var;      // pointer to this input variables source link (or null if it uses the local_value)
       struct variable_str* var_link;     // link to other var's on 'inst' 
       struct variable_str* connect_link; // list of outgoing connections
       struct variable_str* ch_link;      // list of channels that share this variable (rooted on 'any' channel - in order by channel number)
@@ -280,11 +281,13 @@ namespace cw
 
     // Channelizing creates a new var record with an explicit channel index to replace the
     // automatically generated variable whose channel index is set to  'all'.
-    rc_t           var_channelize( instance_t* inst, const char* var_label, unsigned chIdx, const object_t* value_cfg, variable_t*& varRef );
+    rc_t           var_channelize( instance_t* inst, const char* var_label, unsigned chIdx, const object_t* value_cfg, unsigned vid, variable_t*& varRef );
 
     // `value_cfg` is optional. Set it to NULL to ignore
     rc_t           var_register( instance_t* inst, const char* var_label, unsigned vid, unsigned chIdx, const object_t* value_cfg, variable_t*& varRef );
 
+    // Returns true if this var is connected to an external proc variable
+    bool           is_connected_to_external_proc( const variable_t* var );
 
     //-----------------
     //