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#pragma once
#include <cstddef>
namespace NCompactTrie {
class ILeafSkipper {
public:
virtual size_t SkipLeaf(const char* p) const = 0;
virtual ~ILeafSkipper() = default;
};
template <class TPacker>
class TPackerLeafSkipper: public ILeafSkipper {
private:
const TPacker* Packer;
public:
TPackerLeafSkipper(const TPacker* packer)
: Packer(packer)
{
}
size_t SkipLeaf(const char* p) const override {
return Packer->SkipLeaf(p);
}
// For test purposes.
const TPacker* GetPacker() const {
return Packer;
}
};
// The data you need to traverse the trie without unpacking the values.
struct TOpaqueTrie {
const char* Data;
size_t Length;
const ILeafSkipper& SkipFunction;
TOpaqueTrie(const char* data, size_t dataLength, const ILeafSkipper& skipFunction)
: Data(data)
, Length(dataLength)
, SkipFunction(skipFunction)
{
}
bool operator==(const TOpaqueTrie& other) const {
return Data == other.Data &&
Length == other.Length &&
&SkipFunction == &other.SkipFunction;
}
bool operator!=(const TOpaqueTrie& other) const {
return !(*this == other);
}
};
}
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