EA-Setka-2/framework/common/global_var.mqh

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+
//|                                                      ProjectName |
//|                                      Copyright 2020, CompanyName |
//|                                       http://www.companyname.net |
//+------------------------------------------------------------------+
#ifndef GLOBAL_VAR_MQH
#define GLOBAL_VAR_MQH

#define GLOBAL_VAR_PREFIX "STK"

/*
   08<5=>20=85 3;>10;L=KE ?5@5<5==KE:
      [@5D8:A]_[0@0]_[M468:]_[0?@02;5=85=S\B]_[08<5=>20=85 ?5@5<5==>9]
*/

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class tool_global_var
  {
public:
   static string     _prefix_global;
public:
   void              init();
   void              deinit();

   static string     global_prefix()
     {
      str_builder b;
      b.append(GLOBAL_VAR_PREFIX);
      b.append("_");
      b.append(Symbol());
      b.append(itos(MagicNumber));
      return b.to_str();
     }

   static void       delete_all(const uchar postfix=0)
     {
      GlobalVariablesDeleteAll(prepare_var_name("",postfix),layer::time_local());
     }

   static bool       set(const string name, double value,uchar postfix=0)
     {
      return (GlobalVariableSet(prepare_var_name(name,postfix), value)!=0);
     }

   static bool       get(const string name, double& value, uchar postfix=0)
     {
      if(!GlobalVariableCheck(prepare_var_name(name,postfix)))
         return false;

      value=GlobalVariableGet(prepare_var_name(name,postfix));
      return true;
     }

   static bool       del(const string name,uchar postfix=0)
     {
      return GlobalVariableDel(prepare_var_name(name,postfix));
     }


   static string     prepare_var_name(const string name,const uchar postfix)
     {
      return _prefix_global+((postfix!=0)?CharToString(postfix):"")+"_"+name;
     }

   static string     generate_hash_var_name(const string name)
     {
      return ext_string::get_hash(name,CRYPT_HASH_MD5);
     }

  };

string tool_global_var::_prefix_global=tool_global_var::global_prefix();

#endif
//+------------------------------------------------------------------+