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85 lines
2.0 KiB
C++
85 lines
2.0 KiB
C++
#pragma once
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#include "search/common.hpp"
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#include "base/assert.hpp"
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#include "base/range_iterator.hpp"
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#include <cstdint>
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#include <sstream>
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#include <string>
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namespace search
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{
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class TokenRange final
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{
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public:
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TokenRange() = default;
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TokenRange(size_t begin, size_t end)
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: m_begin(static_cast<uint8_t>(begin)), m_end(static_cast<uint8_t>(end))
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{
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ASSERT_LESS_OR_EQUAL(begin, kMaxNumTokens, ());
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ASSERT_LESS_OR_EQUAL(end, kMaxNumTokens, ());
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ASSERT(IsValid(), (*this));
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}
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inline bool AdjacentTo(TokenRange const & rhs) const
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{
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ASSERT(IsValid(), (*this));
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ASSERT(rhs.IsValid(), (rhs));
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return m_begin == rhs.m_end || m_end == rhs.m_begin;
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}
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inline size_t Size() const
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{
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ASSERT(IsValid(), (*this));
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return m_end - m_begin;
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}
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inline bool Empty() const { return Size() == 0; }
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inline void Clear()
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{
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m_begin = 0;
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m_end = 0;
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}
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inline bool IsValid() const { return m_begin <= m_end; }
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inline bool operator<(TokenRange const & rhs) const
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{
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if (m_begin != rhs.m_begin)
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return m_begin < rhs.m_begin;
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return m_end < rhs.m_end;
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}
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inline bool operator==(TokenRange const & rhs) const
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{
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return m_begin == rhs.m_begin && m_end == rhs.m_end;
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}
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inline size_t Begin() const { return m_begin; }
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inline size_t End() const { return m_end; }
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inline base::RangeIterator<size_t> begin() const { return base::RangeIterator<size_t>(m_begin); }
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inline base::RangeIterator<size_t> end() const { return base::RangeIterator<size_t>(m_end); }
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inline base::RangeIterator<size_t> cbegin() const { return base::RangeIterator<size_t>(m_begin); }
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inline base::RangeIterator<size_t> cend() const { return base::RangeIterator<size_t>(m_end); }
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private:
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friend std::string DebugPrint(TokenRange const & tokenRange);
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uint8_t m_begin = 0;
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uint8_t m_end = 0;
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};
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inline std::string DebugPrint(TokenRange const & tokenRange)
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{
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std::ostringstream os;
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os << "TokenRange [" << tokenRange.Begin() << ", " << tokenRange.End() << ")";
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return os.str();
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}
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} // namespace search
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