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#pragma once
#include <library/cpp/yt/exception/exception.h>
#include <util/system/defaults.h>
#include <util/stream/input.h>
#include <util/stream/output.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
constexpr size_t MaxVarInt64Size = (8 * sizeof(ui64) - 1) / 7 + 1;
constexpr size_t MaxVarUint64Size = (8 * sizeof(ui64) - 1) / 7 + 1;
constexpr size_t MaxVarInt32Size = (8 * sizeof(ui32) - 1) / 7 + 1;
constexpr size_t MaxVarUint32Size = (8 * sizeof(ui32) - 1) / 7 + 1;
// Various functions to read/write varints.
// Returns the number of bytes written.
int WriteVarUint64(IOutputStream* output, ui64 value);
int WriteVarUint32(IOutputStream* output, ui32 value);
int WriteVarInt32(IOutputStream* output, i32 value);
int WriteVarInt64(IOutputStream* output, i64 value);
int WriteVarUint64(char* output, ui64 value);
int WriteVarUint32(char* output, ui32 value);
int WriteVarInt32(char* output, i32 value);
int WriteVarInt64(char* output, i64 value);
// Returns the number of bytes read.
int ReadVarUint64(IInputStream* input, ui64* value);
int ReadVarUint32(IInputStream* input, ui32* value);
int ReadVarInt32(IInputStream* input, i32* value);
int ReadVarInt64(IInputStream* input, i64* value);
int ReadVarUint64(const char* input, ui64* value);
int ReadVarUint32(const char* input, ui32* value);
int ReadVarInt32(const char* input, i32* value);
int ReadVarInt64(const char* input, i64* value);
// Throws exception if integer is not complete when `end' is reached.
int ReadVarUint64(const char* input, const char* end, ui64* value);
int ReadVarUint32(const char* input, const char* end, ui32* value);
int ReadVarInt32(const char* input, const char* end, i32* value);
int ReadVarInt64(const char* input, const char* end, i64* value);
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
#define VARINT_INL_H_
#include "varint-inl.h"
#undef VARINT_INL_H_
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