public override void Select(DynamicResources resources,
IValue root,
JsonLocationNode lastNode,
IValue current,
INodeReceiver receiver,
ProcessingFlags options,
int depth)
{
if (current.ValueKind == JsonValueKind.Object)
{
IValue value;
if (current.TryGetProperty(_identifier, out value))
{
this.TailSelect(resources, root,
PathGenerator.Generate(lastNode, _identifier, options),
value, receiver, options, depth);
}
}
}
public override void Select(DynamicResources resources,
IValue root,
JsonLocationNode lastNode,
IValue current,
INodeReceiver receiver,
ProcessingFlags options,
int depth)
{
if (current.ValueKind == JsonValueKind.Array)
{
Int32 index = 0;
foreach (var item in current.EnumerateArray())
{
IValue val;
if (_expr.TryEvaluate(resources, root, item, options, out val) &&
Expression.IsTrue(val))
{
this.TailSelect(resources, root,
PathGenerator.Generate(lastNode, index, options),
item, receiver, options, depth);
}
++index;
}
}
else if (current.ValueKind == JsonValueKind.Object)
{
foreach (var property in current.EnumerateObject())
{
IValue val;
if (_expr.TryEvaluate(resources, root, property.Value, options, out val) &&
Expression.IsTrue(val))
{
this.TailSelect(resources, root,
PathGenerator.Generate(lastNode, property.Name, options),
property.Value, receiver, options, depth);
}
}
}
}
public override bool TryEvaluate(DynamicResources resources, IValue root,
JsonLocationNode lastNode,
IValue current,
ProcessingFlags options,
out IValue value)
{
if (current.ValueKind == JsonValueKind.Object)
{
IValue element;
if (current.TryGetProperty(_identifier, out element))
{
return(this.TryEvaluateTail(resources, root,
PathGenerator.Generate(lastNode, _identifier, options),
element, options, out value));
}
else
{
value = JsonConstants.Null;
return(true);
}
}
else if (current.ValueKind == JsonValueKind.Array && _identifier == "length")
{
value = new DecimalValue(new Decimal(current.GetArrayLength()));
return(true);
}
else if (current.ValueKind == JsonValueKind.String && _identifier == "length")
{
byte[] bytes = Encoding.UTF32.GetBytes(current.GetString().ToCharArray());
value = new DecimalValue(new Decimal(current.GetString().Length));
return(true);
}
else
{
value = JsonConstants.Null;
return(true);
}
}
public override void Select(DynamicResources resources,
IValue root,
JsonLocationNode lastNode,
IValue current,
INodeReceiver receiver,
ProcessingFlags options,
int depth)
{
if (depth >= resources.Options.MaxDepth)
{
throw new InvalidOperationException($"Maximum depth level exceeded in recursive descent selector.");
}
if (current.ValueKind == JsonValueKind.Array)
{
this.TailSelect(resources, root, lastNode, current, receiver, options, depth + 1);
Int32 index = 0;
foreach (var item in current.EnumerateArray())
{
Select(resources, root,
PathGenerator.Generate(lastNode, index, options),
item, receiver, options, depth + 1);
++index;
}
}
else if (current.ValueKind == JsonValueKind.Object)
{
this.TailSelect(resources, root, lastNode, current, receiver, options, depth + 1);
foreach (var prop in current.EnumerateObject())
{
Select(resources, root,
PathGenerator.Generate(lastNode, prop.Name, options),
prop.Value, receiver, options, depth + 1);
}
}
}
public override bool TryEvaluate(DynamicResources resources, IValue root,
JsonLocationNode lastNode,
IValue current,
ProcessingFlags options,
out IValue value)
{
if (current.ValueKind == JsonValueKind.Array)
{
if (_index >= 0 && _index < current.GetArrayLength())
{
return(this.TryEvaluateTail(resources, root,
PathGenerator.Generate(lastNode, _index, options),
current[_index], options, out value));
}
else
{
Int32 index = current.GetArrayLength() + _index;
if (index >= 0 && index < current.GetArrayLength())
{
return(this.TryEvaluateTail(resources, root,
PathGenerator.Generate(lastNode, _index, options),
current[index], options, out value));
}
else
{
value = JsonConstants.Null;
return(true);
}
}
}
else
{
value = JsonConstants.Null;
return(true);
}
}
