New function Find() for ObjectPair and ObjectList. Same as Get() but return constant pointer on already existing object.

include/common.h

@@ -265,6 +265,12 @@ public:
   if(gname==name) return val->Copy();
   else return 0;
  }
+ // This function is same as Get but return pointer on constant object
+ const ObjectBase* Find(const std::string& gname) const
+ {
+  if(gname==name) return val.get();
+  else return 0;
+ }
  std::string Name() const {return name;}
  void SetPair(const std::string& n, ObjectBase* v) {if(!Exist()) {name=n; val.reset(v);}}
  const ObjectBase* Value() const {return val.get();}
@@ -347,14 +353,20 @@ public:
  bool Exist() const {return 0!=vals->size();}
  ObjectBase* Get(const std::string& gname) const
  {
-  ObjectBase* p;
+  const ObjectBase* p=Find(gname);
+  return (0==p)?0:p->Copy();
+ }
+ // This function is same as Get but return pointer on constant object
+ const ObjectBase* Find(const std::string& gname) const
+ {
+  const ObjectBase* p;
   for(auto& i: *vals)
   {
    p=0;
    OBType<ObjectPair> pair(i);
    OBType<ObjectList> list(i);
-   if(pair) p=pair->Get(gname);
+   if(pair) p=pair->Find(gname);
-   else if(list) p=list->Get(gname);
+   else if(list) p=list->Find(gname);
    if(0!=p) return p;
   }
   return 0;