CMake/Source/cmPathLabel.cxx
Kitware Robot 1772622772 LICENSE: Replace references to Copyright.txt with LICENSE.rst
```
git grep -lz 'Copyright.txt or https://cmake.org/licensing ' |
  while IFS= read -r -d $'\0' f ; do
    sed -i '/Copyright.txt or https:\/\/cmake.org\/licensing / {
              s/Copyright.txt/LICENSE.rst/
            }' "$f" ; done
```
2025-03-03 10:43:35 -05:00

31 lines
847 B
C++

/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#include "cmPathLabel.h"
#include <utility>
cmPathLabel::cmPathLabel(std::string label)
: Label(std::move(label))
, Hash(0)
{
// Use a Jenkins one-at-a-time hash with under/over-flow protection
for (char i : this->Label) {
this->Hash += i;
this->Hash += ((this->Hash & 0x003FFFFF) << 10);
this->Hash ^= ((this->Hash & 0xFFFFFFC0) >> 6);
}
this->Hash += ((this->Hash & 0x1FFFFFFF) << 3);
this->Hash ^= ((this->Hash & 0xFFFFF800) >> 11);
this->Hash += ((this->Hash & 0x0001FFFF) << 15);
}
bool cmPathLabel::operator<(cmPathLabel const& l) const
{
return this->Hash < l.Hash;
}
bool cmPathLabel::operator==(cmPathLabel const& l) const
{
return this->Hash == l.Hash;
}