third-party/benchmark/src/string_util.h

   1 #ifndef BENCHMARK_STRING_UTIL_H_
   2 #define BENCHMARK_STRING_UTIL_H_
   3
   4 #include <sstream>
   5 #include <string>
   6 #include <utility>
   7 #include <vector>
   8
   9 #include "benchmark/benchmark.h"
  10 #include "benchmark/export.h"
  11 #include "check.h"
  12 #include "internal_macros.h"
  13
  14 namespace benchmark {
  15
  16 BENCHMARK_EXPORT
  17 std::string HumanReadableNumber(double n, Counter::OneK one_k);
  18
  19 BENCHMARK_EXPORT
  20 #if defined(__MINGW32__)
  21 __attribute__((format(__MINGW_PRINTF_FORMAT, 1, 2)))
  22 #elif defined(__GNUC__)
  23 __attribute__((format(printf, 1, 2)))
  24 #endif
  25 std::string
  26 StrFormat(const char* format, ...);
  27
  28 inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
  29   return out;
  30 }
  31
  32 template <class First, class... Rest>
  33 inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) {
  34   out << std::forward<First>(f);
  35   return StrCatImp(out, std::forward<Rest>(rest)...);
  36 }
  37
  38 template <class... Args>
  39 inline std::string StrCat(Args&&... args) {
  40   std::ostringstream ss;
  41   StrCatImp(ss, std::forward<Args>(args)...);
  42   return ss.str();
  43 }
  44
  45 BENCHMARK_EXPORT
  46 std::vector<std::string> StrSplit(const std::string& str, char delim);
  47
  48 // Disable lint checking for this block since it re-implements C functions.
  49 // NOLINTBEGIN
  50 #ifdef BENCHMARK_STL_ANDROID_GNUSTL
  51 /*
  52  * GNU STL in Android NDK lacks support for some C++11 functions, including
  53  * stoul, stoi, stod. We reimplement them here using C functions strtoul,
  54  * strtol, strtod. Note that reimplemented functions are in benchmark::
  55  * namespace, not std:: namespace.
  56  */
  57 unsigned long stoul(const std::string& str, size_t* pos = nullptr,
  58                     int base = 10);
  59 int stoi(const std::string& str, size_t* pos = nullptr, int base = 10);
  60 double stod(const std::string& str, size_t* pos = nullptr);
  61 #else
  62 using std::stod;   // NOLINT(misc-unused-using-decls)
  63 using std::stoi;   // NOLINT(misc-unused-using-decls)
  64 using std::stoul;  // NOLINT(misc-unused-using-decls)
  65 #endif
  66 // NOLINTEND
  67
  68 }  // end namespace benchmark
  69
  70 #endif  // BENCHMARK_STRING_UTIL_H_