CMake/Source/cmPathLabel.cxx
Kitware Robot 0b96ae1f6a Revise C++ coding style using clang-format with "east const"
Run the `clang-format.bash` script to update all our C and C++ code to a
new style defined by `.clang-format`, now with "east const" enforcement.
Use `clang-format` version 18.

* If you reached this commit for a line in `git blame`, re-run the blame
  operation starting at the parent of this commit to see older history
  for the content.

* See the parent commit for instructions to rebase a change across this
  style transition commit.

Issue: #26123
2025-01-23 13:09:50 -05:00

31 lines
849 B
C++

/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt 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;
}