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7d75041fb1
* Include Sign.cpp in unity builds * Fix AnySecretKey publicKey and sign * Make AnyPublicKey copyable * Define op != for Slice * Overload op << for Slice * Overload op << for KeyType
126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_BASICS_SLICE_H_INCLUDED
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#define RIPPLE_BASICS_SLICE_H_INCLUDED
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#include <ripple/basics/strHex.h>
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#include <beast/utility/noexcept.h>
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#include <algorithm>
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#include <cassert>
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#include <cstdint>
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namespace ripple {
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/** An immutable linear range of bytes.
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A fully constructed Slice is guaranteed to be in a valid state.
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Default construction, construction from nullptr, and zero-byte
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ranges are disallowed. A Slice is lightweight and copyable, it
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retains no ownership of the underlying memory.
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*/
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class Slice
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{
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private:
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std::uint8_t const* data_;
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std::size_t size_;
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public:
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// Disallowed
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Slice() = delete;
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Slice (Slice const&) = default;
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Slice& operator= (Slice const&) = default;
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/** Create a slice pointing to existing memory. */
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Slice (void const* data, std::size_t size)
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: data_ (reinterpret_cast<
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std::uint8_t const*>(data))
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, size_ (size)
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{
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assert(data_ != nullptr);
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assert(size_ > 0);
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}
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/** Returns the number of bytes in the storage.
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This will never be zero.
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*/
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std::size_t
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size() const noexcept
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{
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return size_;
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}
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/** Return a pointer to beginning of the storage.
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@note The return type is guaranteed to be a pointer
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to a single byte, to facilitate pointer arithmetic.
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*/
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std::uint8_t const*
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data() const noexcept
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{
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return data_;
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}
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};
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template <class Hasher>
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inline
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void
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hash_append (Hasher& h, Slice const& v)
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{
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h.append(v.data(), v.size());
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}
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inline
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bool
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operator== (Slice const& lhs, Slice const& rhs) noexcept
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{
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return lhs.size() == rhs.size() &&
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std::memcmp(
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lhs.data(), rhs.data(), lhs.size()) == 0;
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}
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inline
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bool
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operator!= (Slice const& lhs, Slice const& rhs) noexcept
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{
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return !(lhs == rhs);
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}
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inline
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bool
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operator< (Slice const& lhs, Slice const& rhs) noexcept
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{
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return std::lexicographical_compare(
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lhs.data(), lhs.data() + lhs.size(),
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rhs.data(), rhs.data() + rhs.size());
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}
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template <class Stream>
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Stream& operator<<(Stream& s, Slice const& v)
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{
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s << strHex(v.data(), v.size());
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return s;
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}
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} // ripple
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#endif
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