text: // Copyright (c) 2012-2016, The CryptoNote developers, The Bytecoin developers
  //
  // This file is part of Karbo.
  //
  // Karbo is free software: you can redistribute it and/or modify
  // it under the terms of the GNU Lesser General Public License as published by
  // the Free Software Foundation, either version 3 of the License, or
  // (at your option) any later version.
  //
  // Karbo is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  // GNU Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public License
  // along with Karbo.  If not, see <http://www.gnu.org/licenses/>.
  
  #pragma once
  
  #include <exception>
  #include <iomanip>
  #include <iostream>
  
  #include "IWalletLegacy.h"
  #include "Wallet/WalletErrors.h"
  
  namespace CryptoNote {
  
  inline void throwIf(bool expr, CryptoNote::error::WalletErrorCodes ec)
  {
    if (expr)
      throw std::system_error(make_error_code(ec));
  }
  
  inline std::ostream& operator <<(std::ostream& ostr, const Crypto::Hash& hash) {
    std::ios_base::fmtflags flags = ostr.setf(std::ios_base::hex, std::ios_base::basefield);
    char fill = ostr.fill('0');
  
    for (auto b : hash.data) {
      ostr << std::setw(2) << static_cast<unsigned int>(b);
    }
  
    ostr.fill(fill);
    ostr.setf(flags);
    return ostr;
  }
  
  } //namespace CryptoNote
  