text: #include "SymbolRef.h"
  #include "Symbol.h"
  #include "SymbolScope.h"
  
  SymbolRef::SymbolRef()
  {
      Scope = NULL;
      Name = "";
  }
  
  SymbolRef::SymbolRef(SymbolScope* scope, std::string name)
  {
      Scope = scope;
      Name = name;
  }
  
  SymbolRef::SymbolRef(Symbol* symbol)
  {
      Scope = symbol->Scope;
      Name = symbol->Name;
  }
  
  Symbol* SymbolRef::Lookup()
  {
      return Scope->Lookup(Name);
  }
  