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[vcpkg] Fix bootstrap on VS2015 (#11891)

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* Fix boostrap on VS2015 by removing use of C++17 constexpr lambdas.
This commit is contained in:
Billy O'Neal 2020-06-11 17:47:18 -07:00 committed by GitHub
parent c704058346
commit 9efc1318dd
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1 changed files with 9 additions and 5 deletions
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14
toolsrc/src/vcpkg/metrics.cpp
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@ -30,6 +30,14 @@ namespace vcpkg::Metrics
return "";
}
struct append_hexits {
constexpr static char hex[17] = "0123456789abcdef";
void operator()(std::string& res, std::uint8_t bits) const {
res.push_back(hex[(bits >> 4) & 0x0F]);
res.push_back(hex[(bits >> 0) & 0x0F]);
}
};
// note: this ignores the bits of these numbers that would be where format and variant go
static std::string uuid_of_integers(uint64_t top, uint64_t bottom)
{
@ -40,11 +48,7 @@ namespace vcpkg::Metrics
// uuid_field_size in hex characters, not bytes
constexpr size_t uuid_size = 8 + 1 + 4 + 1 + 4 + 1 + 4 + 1 + 12;
constexpr static char hex[17] = "0123456789abcdef";
constexpr static auto write_byte = [](std::string& res, std::uint8_t bits) {
res.push_back(hex[(bits >> 4) & 0x0F]);
res.push_back(hex[(bits >> 0) & 0x0F]);
};
constexpr static append_hexits write_byte;
// set the version bits to 4
top &= 0xFFFF'FFFF'FFFF'0FFFULL;