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#include "vm_defs.h"
#include <util/generic/xrange.h>
#include <util/string/builder.h>
namespace NSc::NUt {
namespace {
TStringBuf GetStringByIdx(ui32 idx) {
static const TStringBuf strings[TIdx::ValueCount] {{}, "a", "aa", "aaa"};
return strings[idx % TIdx::ValueCount];
}
}
TVMState::TVMState(TStringBuf wire, ui32 memSz, ui32 pos)
: Input(wire)
, Memory(memSz)
, Pos(pos)
{}
bool TVMState::TryPushBack() {
if (MayAddMoreMemory()) {
Memory.emplace_back();
return true;
} else {
return false;
}
}
bool TVMState::TryPushFront() {
if (MayAddMoreMemory()) {
Pos += 1;
Memory.emplace_front();
return true;
} else {
return false;
}
}
bool TVMState::TryPopBack() {
if (Memory.size() > 1 && Pos < Memory.size() - 1) {
Memory.pop_back();
return true;
} else {
return false;
}
}
bool TVMState::TryPopFront() {
if (Memory.size() > 1 && Pos > 0) {
Memory.pop_front();
Pos -= 1;
return true;
} else {
return false;
}
}
TString TVMState::ToString() const {
TStringBuilder b;
b << "pos=" << Pos << ";";
for (const auto i : xrange(Memory.size())) {
b << " " << i << (i == Pos ? "@" : ".") << Memory[i].ToJson().Quote();
}
return b;
}
TString TIdx::ToString() const {
return TStringBuilder() << "IDX:" << Idx;
}
TString TPos::ToString() const {
return TStringBuilder() << "POS:" << Pos;
}
template <class T>
TString RenderToString(TStringBuf name, T type, ui32 pos) {
TStringBuilder b;
b << name << ":" << type;
if ((ui32)-1 != pos) {
b << "," << pos;
}
return b;
}
TString TRef::ToString() const {
return RenderToString("REF", Type, Pos);
}
TString TSrc::ToString() const {
return RenderToString("SRC", Type, Pos);
}
TString TDst::ToString() const {
return RenderToString("DST", Type, Pos);
}
TString TPath::ToString() const {
return TStringBuilder() << "PATH:" << Path.Quote();
}
TRef TVMAction::GetRef(ui32 arg) const noexcept {
return std::get<TRef>(Arg[arg]);
}
TSrc TVMAction::GetSrc(ui32 arg) const noexcept {
return std::get<TSrc>(Arg[arg]);
}
TDst TVMAction::GetDst(ui32 arg) const noexcept {
return std::get<TDst>(Arg[arg]);
}
ui32 TVMAction::GetPos(ui32 arg) const noexcept {
return std::get<TPos>(Arg[arg]).Pos;
}
ui32 TVMAction::GetIdx(ui32 arg) const noexcept {
return std::get<TIdx>(Arg[arg]).Idx;
}
TStringBuf TVMAction::GetKey(ui32 arg) const noexcept {
return GetString(arg);
}
TStringBuf TVMAction::GetString(ui32 arg) const noexcept {
return GetStringByIdx(GetIdx(arg));
}
i64 TVMAction::GetIntNumber(ui32 arg) const noexcept {
return GetIdx(arg);
}
TStringBuf TVMAction::GetPath(ui32 arg) const noexcept {
return std::get<TPath>(Arg[arg]).Path;
}
struct TActionPrinter {
TActionPrinter(IOutputStream& out)
: Out(out)
{}
bool operator()(const std::monostate&) const {
return true;
}
//TIdx, TPos, TRef, TSrc, TDst, TPath
template <class T>
bool operator()(const T& t) const {
Out << "; " << t.ToString();
return false;
}
IOutputStream& Out;
};
TString TVMAction::ToString() const {
TStringBuilder out;
out << Type;
for (const auto& arg : Arg) {
if (std::visit(TActionPrinter(out.Out), arg)) {
break;
}
}
return out;
}
}
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