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#pragma once
#include <library/cpp/bit_io/bitinput.h>
#include <library/cpp/scheme/scheme.h>
#include <util/generic/deque.h>
#include <util/generic/maybe.h>
#include <util/generic/variant.h>
#include <util/string/builder.h>
namespace NSc::NUt {
enum EVMAction {
VMA_JMP__POS /* "pos=POS" */,
VMA_CREATE_BACK /* "TValue()->emplace_back" */,
VMA_CREATE_BACK__SRC /* "TValue(SRC)->emplace_back" */,
VMA_CREATE_FRONT /* "TValue()->emplace_front,pos+=1" */,
VMA_CREATE_FRONT__SRC /* "TValue(SRC)->emplace_front,pos+=1" */,
VMA_DESTROY_BACK /* "pop_back" */,
VMA_DESTROY_FRONT /* "pop_front,pos-=1" */,
VMA_ASSIGN__SRC /* "operator=(SRC)" */,
VMA_SET_STRING__IDX /* "SetString(str[IDX])" */,
VMA_SET_INT_NUMBER__IDX /* "SetIntNumber(IDX)" */,
VMA_SET_DICT /* "SetDict()" */,
VMA_SET_ARRAY /* "SetArray()" */,
VMA_SET_NULL /* "SetNull()" */,
VMA_GET_JSON /* "ToJson()" */,
VMA_ARRAY_CLEAR /* "ClearArray()" */,
VMA_ARRAY_PUSH /* "Push()" */,
VMA_ARRAY_PUSH__SRC /* "Push()=SRC" */,
VMA_ARRAY_PUSH__DST /* "Push()->DST" */,
VMA_ARRAY_POP /* "Pop()" */,
VMA_ARRAY_POP__REF /* "Pop()->REF" */,
VMA_ARRAY_INSERT__IDX /* "Insert(IDX)" */,
VMA_ARRAY_INSERT__IDX_SRC /* "Insert(IDX)=SRC" */,
VMA_ARRAY_INSERT__IDX_DST /* "Insert(IDX)->DST" */,
VMA_ARRAY_DELETE__IDX /* "Delete(IDX)" */,
VMA_ARRAY_DELETE__IDX_REF /* "Delete(IDX)->REF" */,
VMA_ARRAY_GET__IDX_REF /* "Get(IDX)->REF" */,
VMA_ARRAY_GET_OR_ADD__IDX /* "GetOrAdd(IDX)" */,
VMA_ARRAY_GET_OR_ADD__IDX_SRC /* "GetOrAdd(IDX)=SRC" */,
VMA_ARRAY_GET_OR_ADD__IDX_DST /* "GetOrAdd(IDX)->DST" */,
VMA_ARRAY_GET_NO_ADD__IDX_REF /* "GetNoAdd(IDX)->REF" */,
VMA_DICT_CLEAR /* "ClearDict()" */,
VMA_DICT_DELETE__IDX /* "Delete(str[IDX])" */,
VMA_DICT_DELETE__IDX_REF /* "Delete(str[IDX])->REF" */,
VMA_DICT_GET__IDX_REF /* "Get(str[IDX])->REF" */,
VMA_DICT_GET_OR_ADD__IDX /* "GetOrAdd(str[IDX])" */,
VMA_DICT_GET_OR_ADD__IDX_SRC /* "GetOrAdd(str[IDX])=SRC" */,
VMA_DICT_GET_OR_ADD__IDX_DST /* "GetOrAdd(str[IDX])->DST" */,
VMA_DICT_GET_NO_ADD__IDX_REF /* "GetNoAdd(str[IDX])->REF" */,
VMA_MERGE_UPDATE__POS /* "MergeUpdate(POS)" */,
VMA_MERGE_REVERSE__POS /* "ReverseMerge(POS)" */,
VMA_MERGE_COPY_FROM__POS /* "CopyFrom(POS)" */,
VMA_SWAP__POS /* "Swap(POS)" */,
VMA_EQUAL__POS_POS /* "Equal(POS, POS)" */,
VMA_SELECT_NO_ADD__PATH_REF /* "TrySelect(PATH)->REF" */,
VMA_SELECT_OR_ADD__PATH_REF /* "TrySelectOrAdd(PATH)->REF" */,
VMA_SELECT_AND_DELETE__PATH_REF /* "TrySelectAndDelete(PATH)->REF" */,
VMA_COUNT,
};
struct TVMState {
NBitIO::TBitInput Input;
TDeque<TValue> Memory { 1 };
ui32 Pos = 0;
static const ui32 MaxMemory = 16;
public:
explicit TVMState(TStringBuf wire, ui32 memSz, ui32 pos);
TValue& Current() {
return Memory[Pos];
}
TValue& LRef(ui32 pos) {
return Memory[pos];
}
const TValue& CRef(ui32 pos) {
return Memory[pos];
}
TValue&& RRef(ui32 pos) {
return std::move(Memory[pos]);
}
[[nodiscard]]
bool TryPushBack();
template <class T>
[[nodiscard]]
bool TryPushBack(T&& t) {
if (MayAddMoreMemory()) {
Memory.emplace_back(std::forward<T>(t));
return true;
} else {
return false;
}
}
[[nodiscard]]
bool TryPushFront();
template <class T>
[[nodiscard]]
bool TryPushFront(T&& t) {
if (MayAddMoreMemory()) {
Pos += 1;
Memory.emplace_front(std::forward<T>(t));
return true;
} else {
return false;
}
}
[[nodiscard]]
bool TryPopBack();
[[nodiscard]]
bool TryPopFront();
TString ToString() const;
private:
[[nodiscard]]
bool MayAddMoreMemory() const noexcept {
return Memory.size() < MaxMemory;
}
};
struct TIdx {
ui32 Idx = -1;
static const ui32 ValueCount = 4;
public:
TString ToString() const;
};
struct TPos {
ui32 Pos = -1;
static const ui32 ValueCount = TVMState::MaxMemory;
public:
TString ToString() const;
};
struct TRef : public TPos {
enum EType {
T_CREATE_FRONT /* "emplace_front(RES),pos+=1" */,
T_CREATE_BACK /* "emplace_back(RES)" */,
T_REF__POS /* "pos@(RES)" */,
T_COUNT
};
EType Type = T_COUNT;
static const ui32 TypeCount = T_COUNT;
public:
TString ToString() const;
};
struct TSrc : public TPos {
enum EType {
T_LREF__POS /* "pos@(TValue&)" */,
T_CREF__POS /* "pos@(const TValue&)" */,
T_RREF__POS /* "pos@(TValue&&)" */,
T_COUNT
};
EType Type = T_COUNT;
static const ui32 TypeCount = T_COUNT;
public:
TString ToString() const;
};
struct TDst : public TPos {
enum EType {
T_CREATE_FRONT_LREF /* "emplace_front(TValue&),pos+=1" */,
T_CREATE_FRONT_CREF /* "emplace_front(const TValue&),pos+=1" */,
T_CREATE_FRONT_RREF /* "emplace_front(TValue&&),pos+=1" */,
T_CREATE_BACK_LREF /* "emplace_back(TValue&)" */,
T_CREATE_BACK_CREF /* "emplace_back(TValue&),pos+=1" */,
T_CREATE_BACK_RREF /* "emplace_back(TValue&),pos+=1" */,
T_LREF__POS /* "pos@(TValue&)" */,
T_CREF__POS /* "pos@(const TValue&)" */,
T_RREF__POS /* "pos@(TValue&&)" */,
T_COUNT
};
EType Type = T_COUNT;
static const ui32 TypeCount = T_COUNT;
public:
TString ToString() const;
};
struct TPath {
TString Path;
static const ui32 MaxLength = 32;
public:
TString ToString() const;
};
using TArg = std::variant<std::monostate, TIdx, TPos, TRef, TSrc, TDst, TPath>;
struct TVMAction {
using EType = EVMAction;
EVMAction Type = VMA_COUNT;
static const ui32 TypeCount = VMA_COUNT;
public:
template <class T>
bool SetArg(TMaybe<T> arg) {
Y_ABORT_UNLESS(CurrArg < Y_ARRAY_SIZE(Arg));
if (arg) {
Arg[CurrArg++] = *arg;
return true;
} else {
return false;
}
}
public:
TRef GetRef(ui32 arg) const noexcept;
TSrc GetSrc(ui32 arg) const noexcept;
TDst GetDst(ui32 arg) const noexcept;
ui32 GetPos(ui32 arg) const noexcept;
ui32 GetIdx(ui32 arg) const noexcept;
TStringBuf GetKey(ui32 arg) const noexcept;
TStringBuf GetString(ui32 arg) const noexcept;
i64 GetIntNumber(ui32 arg) const noexcept;
TStringBuf GetPath(ui32 arg) const noexcept;
TString ToString() const;
private:
TArg Arg[2];
ui32 CurrArg = 0;
};
[[nodiscard]]
inline ui32 GetCountWidth(ui32 cnt) {
return MostSignificantBit(cnt - 1) + 1;
}
}
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