зеркало из https://github.com/microsoft/CCF.git
61 строка
1.4 KiB
C++
61 строка
1.4 KiB
C++
// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the Apache 2.0 License.
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#pragma once
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#include "ccf/ds/siphash.h"
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#define FMT_HEADER_ONLY
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#include <fmt/format.h>
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#include <small_vector/SmallVector.h>
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namespace ccf
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{
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using ByteVector = llvm_vecsmall::SmallVector<uint8_t, 8>;
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}
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namespace std
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{
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template <typename T, unsigned N>
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struct hash<llvm_vecsmall::SmallVector<T, N>>
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{
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size_t operator()(const llvm_vecsmall::SmallVector<T, N>& v) const
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{
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static constexpr ccf::siphash::SipKey k{
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0x7720796f726c694b, 0x2165726568207361};
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return ccf::siphash::siphash<2, 4>(v.data(), v.size(), k);
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}
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};
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}
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FMT_BEGIN_NAMESPACE
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template <>
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struct formatter<ccf::ByteVector>
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{
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template <typename ParseContext>
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constexpr auto parse(ParseContext& ctx)
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{
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return ctx.begin();
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}
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template <typename FormatContext>
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auto format(const ccf::ByteVector& e, FormatContext& ctx) const
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{
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// This is the same as std::isprint, but independent of the current locale.
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auto printable = [](uint8_t b) { return b >= 0x20 && b <= 0x7e; };
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if (std::all_of(e.begin(), e.end(), printable))
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{
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return format_to(
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ctx.out(),
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"<uint8[{}]: ascii={}>",
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e.size(),
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std::string(e.begin(), e.end()));
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}
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else
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{
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return format_to(
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ctx.out(), "<uint8[{}]: hex={:02x}>", e.size(), fmt::join(e, " "));
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}
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}
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};
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FMT_END_NAMESPACE
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