(C++) Counter

 

 

Counter is a class for tallying.

Technical facts

 

 

 

 

 

 

./CppCounter/CppCounter.pri

 

---

INCLUDEPATH += \     ../../Classes/CppCounter SOURCES += \     ../../Classes/CppCounter/counter.cpp \     ../../Classes/CppCounter/counter_test.cpp HEADERS  += \     ../../Classes/CppCounter/counter.h OTHER_FILES += \     ../../Classes/CppCounter/Licence.txt

 

 

 

 

 

./CppCounter/counter.h

 

---

//--------------------------------------------------------------------------- /* Counter, an incrementing counter Copyright 2011-2015 Richel Bilderbeek This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppCounter.htm //--------------------------------------------------------------------------- #ifndef COUNTER_H #define COUNTER_H #include <string> #include <vector> namespace ribi { ///Counter is a counter struct Counter {   ///Counter is constructed with an initial count, which is initialized to   ///zero by default   explicit Counter(const int initial_count = 0) noexcept;   ///Increments count   void Inc() noexcept { ++m_count; }   //Prefix   Counter& operator++()   {     Inc();     return *this;   }   ///Get the count   int Get() const noexcept { return m_count; }   static std::string GetVersion() noexcept;   static std::vector<std::string> GetVersionHistory() noexcept;   private:   ///The count   int m_count;   #ifndef NDEBUG   static void Test() noexcept;   #endif }; bool operator==(const Counter& lhs, const Counter& rhs) noexcept; bool operator!=(const Counter& lhs, const Counter& rhs) noexcept; } //~namespace ribi #endif // COUNTER_H

 

 

 

 

 

./CppCounter/counter.cpp

 

---

//--------------------------------------------------------------------------- /* Counter, an incrementing counter Copyright 2011-2015 Richel Bilderbeek This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppCounter.htm //--------------------------------------------------------------------------- #include "counter.h" ribi::Counter::Counter(const int initial_count) noexcept   : m_count(initial_count) {   #ifndef NDEBUG   Test();   #endif } std::string ribi::Counter::GetVersion() noexcept {   return "1.2"; } std::vector<std::string> ribi::Counter::GetVersionHistory() noexcept {   return {     "2011-08-20: Version 1.0: initial version",     "2014-08-01: Version 1.1: added tests",     "2014-04-18: Version 1.2: added operator++, operator== and operator!="   }; } bool ribi::operator==(const ribi::Counter& lhs, const ribi::Counter& rhs) noexcept {   return lhs.Get() == rhs.Get(); } bool ribi::operator!=(const ribi::Counter& lhs, const ribi::Counter& rhs) noexcept {   return !(lhs == rhs); }

 

 

 

 

 

./CppCounter/counter_test.cpp

 

---

//--------------------------------------------------------------------------- /* Counter, an incrementing counter Copyright 2011-2015 Richel Bilderbeek This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppCounter.htm //--------------------------------------------------------------------------- #ifndef NDEBUG #include "counter.h" #include <cassert> #include "testtimer.h" #include "trace.h" void ribi::Counter::Test() noexcept {   {     static bool is_tested{false};     if (is_tested) return;     is_tested = true;   }   const TestTimer test_timer(__func__,__FILE__,1.0);   const bool verbose{false};   if (verbose) { TRACE("Default-construction must have value zero"); }   {     const Counter c;     assert(c.Get() == 0);   }   if (verbose) { TRACE("Construction with value must return it"); }   {     const Counter c(42);     assert(c.Get() == 42);   }   if (verbose) { TRACE("Increment must increment"); }   {     Counter c;     const int old_value = c.Get();     c.Inc();     assert(c.Get() == old_value + 1);   }   if (verbose) { TRACE("operator++ must increment"); }   {     Counter c;     const int old_value = c.Get();     ++c;     assert(c.Get() == old_value + 1);   }   if (verbose) { TRACE("operator=="); }   {     Counter c;     Counter d;     assert(c == d);   }   if (verbose) { TRACE("operator!="); }   {     Counter c;     Counter d;     ++c;     assert(c != d);   } } #endif