public JsonObject Parse()
{
var database = new CustomDb(_pool, DbRow.Size + _utf8Json.Length);
var stack = new CustomStack(Utf8JsonReader.StackFreeMaxDepth * StackRow.Size);
var reader = new Utf8JsonReader(_utf8Json);
bool inArray = false;
int arrayItemsCount = 0;
int numberOfRowsForMembers = 0;
int numberOfRowsForValues = 0;
int parentLocation = -1;
while (reader.Read())
{
JsonTokenType tokenType = reader.TokenType;
if (tokenType == JsonTokenType.StartObject)
{
if (parentLocation != -1)
{
database.SetHasChildren(parentLocation);
}
parentLocation = database.Index;
if (inArray)
{
arrayItemsCount++;
}
numberOfRowsForValues++;
database.Append(JsonValueType.Object, reader.TokenStartIndex);
var row = new StackRow(numberOfRowsForMembers + 1);
stack.Push(row);
numberOfRowsForMembers = 0;
}
else if (tokenType == JsonTokenType.EndObject)
{
parentLocation = -1;
int rowIndex = reader.NoMoreData ? 0 : database.FindIndexOfFirstUnsetSizeOrLength(JsonValueType.Object);
database.SetLength(rowIndex, numberOfRowsForMembers);
if (numberOfRowsForMembers != 0)
{
database.SetNumberOfRows(rowIndex, numberOfRowsForMembers);
}
StackRow row = stack.Pop();
numberOfRowsForMembers += row.SizeOrLength;
}
else if (tokenType == JsonTokenType.StartArray)
{
if (parentLocation != -1)
{
database.SetHasChildren(parentLocation);
}
parentLocation = database.Index;
if (inArray)
{
arrayItemsCount++;
}
numberOfRowsForMembers++;
database.Append(JsonValueType.Array, reader.TokenStartIndex);
var row = new StackRow(arrayItemsCount, numberOfRowsForValues + 1);
stack.Push(row);
arrayItemsCount = 0;
numberOfRowsForValues = 0;
}
else if (tokenType == JsonTokenType.EndArray)
{
parentLocation = -1;
int rowIndex = reader.NoMoreData ? 0 : database.FindIndexOfFirstUnsetSizeOrLength(JsonValueType.Array);
database.SetLength(rowIndex, arrayItemsCount);
if (numberOfRowsForValues != 0)
{
database.SetNumberOfRows(rowIndex, numberOfRowsForValues);
}
StackRow row = stack.Pop();
arrayItemsCount = row.SizeOrLength;
numberOfRowsForValues += row.NumberOfRows;
}
else
{
Debug.Assert(tokenType == JsonTokenType.PropertyName || tokenType == JsonTokenType.Value);
numberOfRowsForValues++;
numberOfRowsForMembers++;
database.Append(reader.ValueType, reader.TokenStartIndex, reader.Value.Length);
if (tokenType == JsonTokenType.Value && inArray)
{
arrayItemsCount++;
}
}
inArray = reader.InArray;
}
stack.Dispose();
database.Resize();
return(new JsonObject(_utf8Json, database));
}
