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())
{
this.TailSelect(resources, root,
PathGenerator.Generate(lastNode, index, options),
item, receiver, options, depth);
++index;
}
}
else if (current.ValueKind == JsonValueKind.Object)
{
foreach (var prop in current.EnumerateObject())
{
this.TailSelect(resources, root,
PathGenerator.Generate(lastNode, prop.Name, options),
prop.Value, receiver, options, depth);
}
}
}
public override bool TryEvaluate(DynamicResources resources,
IValue current,
out IValue value)
{
if (current.Type != JmesPathType.Object)
{
value = JsonConstants.Null;
return(true);
}
var result = new List <IValue>();
value = new ArrayValue(result);
foreach (var item in current.EnumerateObject())
{
if (item.Value.Type != JmesPathType.Null)
{
IValue val;
if (!this.TryApplyExpressions(resources, item.Value, out val))
{
return(false);
}
if (val.Type != JmesPathType.Null)
{
result.Add(val);
}
}
}
return(true);
}
internal static bool IsFalse(IValue val)
{
var comparer = ValueEqualityComparer.Instance;
switch (val.Type)
{
case JmesPathType.False:
return(true);
case JmesPathType.Null:
return(true);
case JmesPathType.Array:
return(val.GetArrayLength() == 0);
case JmesPathType.Object:
return(val.EnumerateObject().MoveNext() == false);
case JmesPathType.String:
return(val.GetString().Length == 0);
case JmesPathType.Number:
return(false);
default:
return(false);
}
}
internal static bool IsFalse(IValue val)
{
var comparer = ValueEqualityComparer.Instance;
switch (val.ValueKind)
{
case JsonValueKind.False:
case JsonValueKind.Null:
case JsonValueKind.Undefined:
return(true);
case JsonValueKind.Array:
return(val.GetArrayLength() == 0);
case JsonValueKind.Object:
return(val.EnumerateObject().MoveNext() == false);
case JsonValueKind.String:
return(val.GetString().Length == 0);
case JsonValueKind.Number:
return(false);
default:
return(false);
}
}
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);
}
}
}