CMake/Source/cmPathLabel.cxx
Pavel Solodovnikov 7d5095796a Meta: modernize old-fashioned loops to range-based for.
Changes done via `clang-tidy` with some manual fine-tuning
for the variable naming and `auto` type deduction
where appropriate.
2017-09-12 16:22:47 +03:00

29 lines
825 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"
cmPathLabel::cmPathLabel(const std::string& label)
: Label(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<(const cmPathLabel& l) const
{
return this->Hash < l.Hash;
}
bool cmPathLabel::operator==(const cmPathLabel& l) const
{
return this->Hash == l.Hash;
}