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#pragma once
#include "resource.h"
#include <yql/essentials/public/udf/udf_value.h>
#include <yql/essentials/public/udf/udf_helpers.h>
#include <yql/essentials/minikql/dom/node.h>
#include <yql/essentials/minikql/dom/json.h>
namespace NJson2Udf {
using namespace NKikimr;
using namespace NUdf;
using namespace NYql;
using namespace NDom;
template <typename TSource>
class TAsJsonNode: public TBoxedValue {
public:
TAsJsonNode(TSourcePosition pos)
: Pos_(pos)
{
}
static TStringRef Name();
static bool DeclareSignature(
const TStringRef& name,
TType* userType,
IFunctionTypeInfoBuilder& builder,
bool typesOnly) {
Y_UNUSED(userType);
if (name != Name()) {
return false;
}
auto optionalSourceType = builder.Optional()->Item<TSource>().Build();
auto resourceType = builder.Resource(JSON_NODE_RESOURCE_NAME);
builder.Args()
->Add(optionalSourceType)
.Done()
.Returns(resourceType);
if (!typesOnly) {
builder.Implementation(new TAsJsonNode<TSource>(builder.GetSourcePosition()));
}
builder.IsStrict();
return true;
}
private:
const size_t MaxParseErrors = 10;
static TUnboxedValue Interpret(const TUnboxedValue& sourceValue, const IValueBuilder* valueBuilder);
TUnboxedValue Run(
const IValueBuilder* valueBuilder,
const TUnboxedValuePod* args) const final {
Y_UNUSED(valueBuilder);
try {
if (!args[0].HasValue()) {
return MakeEntity();
}
return Interpret(args[0], valueBuilder);
} catch (const std::exception& e) {
UdfTerminate((TStringBuilder() << Pos_ << " " << e.what()).data());
}
}
TSourcePosition Pos_;
};
template <>
TStringRef TAsJsonNode<TUtf8>::Name() {
return TStringRef::Of("Utf8AsJsonNode");
}
template <>
TUnboxedValue TAsJsonNode<TUtf8>::Interpret(const TUnboxedValue& sourceValue, const IValueBuilder* valueBuilder) {
return MakeString(sourceValue.AsStringRef(), valueBuilder);
}
template <>
TStringRef TAsJsonNode<double>::Name() {
return TStringRef::Of("DoubleAsJsonNode");
}
template <>
TUnboxedValue TAsJsonNode<double>::Interpret(const TUnboxedValue& sourceValue, const IValueBuilder* valueBuilder) {
Y_UNUSED(valueBuilder);
return MakeDouble(sourceValue.Get<double>());
}
template <>
TStringRef TAsJsonNode<bool>::Name() {
return TStringRef::Of("BoolAsJsonNode");
}
template <>
TUnboxedValue TAsJsonNode<bool>::Interpret(const TUnboxedValue& sourceValue, const IValueBuilder* valueBuilder) {
Y_UNUSED(valueBuilder);
return MakeBool(sourceValue.Get<bool>());
}
template <>
TStringRef TAsJsonNode<TJson>::Name() {
return TStringRef::Of("JsonAsJsonNode");
}
template <>
TUnboxedValue TAsJsonNode<TJson>::Interpret(const TUnboxedValue& sourceValue, const IValueBuilder* valueBuilder) {
return TryParseJsonDom(sourceValue.AsStringRef(), valueBuilder);
}
}
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