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#pragma once
#include <cstddef>
#include <deque>
#include <set>
#include <fmt/core.h>
#include <fmt/format.h>
#include <IO/WriteBuffer.h>
#include <IO/ReadBuffer.h>
namespace DB
{
/** A pair of marks that defines the range of rows in a part. Specifically,
* the range has the form [begin * index_granularity, end * index_granularity).
*/
struct MarkRange
{
size_t begin;
size_t end;
MarkRange() = default;
MarkRange(const size_t begin_, const size_t end_) : begin{begin_}, end{end_} {}
size_t getNumberOfMarks() const;
bool operator==(const MarkRange & rhs) const;
bool operator<(const MarkRange & rhs) const;
};
struct MarkRanges : public std::deque<MarkRange>
{
using std::deque<MarkRange>::deque;
size_t getNumberOfMarks() const;
void serialize(WriteBuffer & out) const;
String describe() const;
void deserialize(ReadBuffer & in);
};
/** Get max range.end from ranges.
*/
size_t getLastMark(const MarkRanges & ranges);
std::string toString(const MarkRanges & ranges);
void assertSortedAndNonIntersecting(const MarkRanges & ranges);
}
template <>
struct fmt::formatter<DB::MarkRange>
{
constexpr static auto parse(format_parse_context & ctx)
{
const auto * it = ctx.begin();
const auto * end = ctx.end();
/// Only support {}.
if (it != end && *it != '}')
throw fmt::format_error("invalid format");
return it;
}
template <typename FormatContext>
auto format(const DB::MarkRange & range, FormatContext & ctx)
{
return fmt::format_to(ctx.out(), "{}", fmt::format("({}, {})", range.begin, range.end));
}
};
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