private JSONParseItem GetItemBeforePosition(int pos, JSONComplexItem parentItem)
{
JSONParseItem item = null;
JSONParseItemList children = parentItem.Children;
int start = 0;
if (children.Any())
{
start = children[0].Start;
}
if (start < pos)
{
int i = FindInsertIndex(children, pos, beforeExisting: true) - 1;
if (i >= 0)
{
item = children[i];
if (item is JSONComplexItem complexItem)
{
// Recurse to find the deepest item
item = GetItemBeforePosition(pos, complexItem);
}
}
}
return(item);
}
public void JSONHelpers_GetItemBeforePosition_EmptyFile()
{
JSONComplexItem complexItem = JSONParser.Parse(string.Empty);
JSONParseItem item = JsonHelpers.GetItemBeforePosition(0, complexItem);
Assert.IsNull(item);
}
[DataRow(170, 5)] // The last index
public void JSONHelpers_FindInsertIndex_InvalidJson(int position, int expectedIndex)
{
JSONComplexItem item = JSONParser.Parse(_invalidJsonText).Children[0] as JSONComplexItem;
JSONParseItemList items = item.Children;
int actualIndex = JsonHelpers.FindInsertIndex(items, position);
Assert.AreEqual(expectedIndex, actualIndex);
}
[DataRow(170, "}")] // The last token item position
public void JSONHelpers_GetItemBeforePosition_InvalidJson(int position, string expectedText)
{
JSONComplexItem complexItem = JSONParser.Parse(_invalidJsonText);
JSONParseItem item = JsonHelpers.GetItemBeforePosition(position, complexItem);
Assert.IsTrue(item is JSONTokenItem);
Assert.AreEqual(expectedText, item.Text);
}
private JSONParseItem GetNextSibling(JSONArrayElement arrayElement)
{
JSONComplexItem parent = arrayElement.Parent;
return(parent != null?GetNextChild(arrayElement, parent.Children) : null);
}