public override IJsonReader CreateReader(IJsonNavigatorNode jsonNavigatorNode)
{
if (!(jsonNavigatorNode is JsonTextNavigatorNode jsonTextNavigatorNode))
{
throw new ArgumentException($"{nameof(jsonNavigatorNode)} must be a {nameof(JsonTextNavigatorNode)}.");
}
ReadOnlyMemory <byte> buffer = jsonTextNavigatorNode switch
{
LazyNode lazyNode => lazyNode.BufferedValue,
ArrayNode arrayNode => arrayNode.BufferedValue,
FalseNode falseNode => SingletonBuffers.False,
StringNodeBase stringNodeBase => stringNodeBase.BufferedValue.Memory,
NullNode nullNode => SingletonBuffers.Null,
NumberNode numberNode => numberNode.BufferedToken,
ObjectNode objectNode => objectNode.BufferedValue,
TrueNode trueNode => SingletonBuffers.True,
GuidNode guidNode => guidNode.BufferedToken,
BinaryNode binaryNode => binaryNode.BufferedToken,
IntegerNode intNode => intNode.BufferedToken,
FloatNode floatNode => floatNode.BufferedToken,
_ => throw new ArgumentOutOfRangeException($"Unknown {nameof(JsonTextNavigatorNode)} type: {jsonTextNavigatorNode.GetType()}."),
};
return(JsonReader.Create(JsonSerializationFormat.Text, buffer));
}
/// <summary>
/// Parses out a JSON array AST node with a jsonTextReader.
/// </summary>
/// <param name="jsonTextReader">The reader to use as a lexer / tokenizer</param>
/// <returns>JSON array AST node</returns>
private static ArrayNode ParseArrayNode(IJsonTextReaderPrivateImplementation jsonTextReader)
{
List <JsonTextNavigatorNode> items = new List <JsonTextNavigatorNode>();
ReadOnlyMemory <byte> bufferedArrayStartToken = jsonTextReader.GetBufferedJsonToken().Memory;
if (!MemoryMarshal.TryGetArray(bufferedArrayStartToken, out ArraySegment <byte> startArrayArraySegment))
{
throw new InvalidOperationException($"Failed to get {nameof(startArrayArraySegment)}.");
}
// consume the begin array token
jsonTextReader.Read();
while (jsonTextReader.CurrentTokenType != JsonTokenType.EndArray)
{
items.Add(Parser.ParseNode(jsonTextReader));
}
ReadOnlyMemory <byte> bufferedArrayEndToken = jsonTextReader.GetBufferedJsonToken().Memory;
if (!MemoryMarshal.TryGetArray(bufferedArrayEndToken, out ArraySegment <byte> endArrayArraySegment))
{
throw new InvalidOperationException($"Failed to get {nameof(endArrayArraySegment)}.");
}
// consume the end array token
jsonTextReader.Read();
ReadOnlyMemory <byte> bufferedRawArray = startArrayArraySegment.Array;
bufferedRawArray = bufferedRawArray.Slice(start: startArrayArraySegment.Offset, length: endArrayArraySegment.Offset - startArrayArraySegment.Offset + 1);
return(ArrayNode.Create(items, bufferedRawArray));
}
/// <summary>
/// Gets an IEnumerable of <see cref="IJsonNavigatorNode"/>s for an arrayNode.
/// </summary>
/// <param name="arrayNavigatorNode">The <see cref="IJsonNavigatorNode"/> of the array to get the items from</param>
/// <returns>The IEnumerable of <see cref="IJsonNavigatorNode"/>s for an arrayNode.</returns>
public override IEnumerable<IJsonNavigatorNode> GetArrayItems(IJsonNavigatorNode arrayNavigatorNode)
{
if (arrayNavigatorNode == null)
{
throw new ArgumentNullException("arrayNode");
}
ArrayNode arrayNode = arrayNavigatorNode as ArrayNode;
if (arrayNode == null)
{
throw new ArgumentException("arrayNavigatorNode must actually be an array node");
}
return arrayNode.Items;
}
/// <summary>
/// Gets the node at a particular index of an array node
/// </summary>
/// <param name="arrayNavigatorNode">The <see cref="IJsonNavigatorNode"/> of the (array) node to index from.</param>
/// <param name="index">The offset into the array</param>
/// <returns>The <see cref="IJsonNavigatorNode"/> of the node at a particular index of an array node</returns>
public override IJsonNavigatorNode GetArrayItemAt(IJsonNavigatorNode arrayNavigatorNode, int index)
{
if (arrayNavigatorNode == null)
{
throw new ArgumentNullException("arrayNode");
}
ArrayNode arrayNode = arrayNavigatorNode as ArrayNode;
if (arrayNode == null)
{
throw new ArgumentException("arrayNavigatorNode must actually be an array node");
}
return arrayNode.Items[index];
}
/// <summary>
/// Gets the number of elements in an array node.
/// </summary>
/// <param name="arrayNavigatorNode">The <see cref="IJsonNavigatorNode"/> of the (array) node to get the count of.</param>
/// <returns>The number of elements in the array node.</returns>
public override int GetArrayItemCount(IJsonNavigatorNode arrayNavigatorNode)
{
if (arrayNavigatorNode == null)
{
throw new ArgumentNullException("arrayNavigatorNode");
}
ArrayNode arrayNode = arrayNavigatorNode as ArrayNode;
if (arrayNode == null)
{
throw new ArgumentException("arrayNavigatorNode must actually be an array node");
}
return arrayNode.Items.Count;
}
/// <summary>
/// Parses out a JSON array AST node with a jsonTextReader.
/// </summary>
/// <param name="jsonTextReader">The reader to use as a lexer / tokenizer</param>
/// <returns>JSON array AST node</returns>
private static ArrayNode ParseArrayNode(IJsonReader jsonTextReader)
{
List <JsonTextNode> items = new List <JsonTextNode>();
// consume the begin array token
jsonTextReader.Read();
while (jsonTextReader.CurrentTokenType != JsonTokenType.EndArray)
{
items.Add(Parser.ParseNode(jsonTextReader));
}
// consume the end array token
jsonTextReader.Read();
return(ArrayNode.Create(items));
}
private static ReadOnlyMemory <byte> GetNodeBuffer(JsonTextNavigatorNode jsonTextNavigatorNode)
{
return(jsonTextNavigatorNode switch
{
LazyNode lazyNode => lazyNode.BufferedValue,
ArrayNode arrayNode => arrayNode.BufferedValue,
FalseNode falseNode => SingletonBuffers.False,
StringNodeBase stringNodeBase => stringNodeBase.BufferedValue.Memory,
NullNode nullNode => SingletonBuffers.Null,
NumberNode numberNode => numberNode.BufferedToken,
ObjectNode objectNode => objectNode.BufferedValue,
TrueNode trueNode => SingletonBuffers.True,
GuidNode guidNode => guidNode.BufferedToken,
BinaryNode binaryNode => binaryNode.BufferedToken,
IntegerNode intNode => intNode.BufferedToken,
FloatNode floatNode => floatNode.BufferedToken,
_ => throw new ArgumentOutOfRangeException($"Unknown {nameof(JsonTextNavigatorNode)} type: {jsonTextNavigatorNode.GetType()}."),
});