internal static IEnumerable <Operation> CalculatePatch(JToken left, JToken right, bool useIdToDetermineEquality,
string path = "")
{
if (left.Type != right.Type)
{
yield return(JsonDiffer.Replace(path, "", right));
yield break;
}
if (left.Type == JTokenType.Array)
{
Operation prev = null;
foreach (var operation in ProcessArray(left, right, path, useIdToDetermineEquality))
{
var add = operation as AddOperation;
if (prev is RemoveOperation prevRemove && add != null && add.Path == prevRemove.Path)
{
yield return(Replace(add.Path, "", add.Value));
prev = null;
}
else
{
if (prev != null)
{
yield return(prev);
}
prev = operation;
}
}
internal static IEnumerable <Operation> CalculatePatch(JToken left, JToken right, bool useIdToDetermineEquality,
string path = "")
{
if (left.Type != right.Type)
{
yield return(JsonDiffer.Replace(path, "", right));
yield break;
}
if (left.Type == JTokenType.Array)
{
Operation prev = null;
foreach (var operation in ProcessArray(left, right, path, useIdToDetermineEquality))
{
var prevRemove = prev as RemoveOperation;
var add = operation as AddOperation;
if (prevRemove != null && add != null && add.Path == prevRemove.Path)
{
yield return(Replace(add.Path, "", add.Value));
prev = null;
}
else
{
if (prev != null)
{
yield return(prev);
}
prev = operation;
}
}
if (prev != null)
{
yield return(prev);
}
}
else if (left.Type == JTokenType.Object)
{
var lprops = ((IDictionary <string, JToken>)left).OrderBy(p => p.Key);
var rprops = ((IDictionary <string, JToken>)right).OrderBy(p => p.Key);
foreach (var removed in lprops.Except(rprops, MatchesKey.Instance))
{
yield return(JsonDiffer.Remove(path, removed.Key));
}
foreach (var added in rprops.Except(lprops, MatchesKey.Instance))
{
yield return(JsonDiffer.Add(path, added.Key, added.Value));
}
var matchedKeys = lprops.Select(x => x.Key).Intersect(rprops.Select(y => y.Key));
var zipped = matchedKeys.Select(k => new { key = k, left = left[k], right = right[k] });
foreach (var match in zipped)
{
string newPath = path + "/" + match.key;
foreach (var patch in CalculatePatch(match.left, match.right, useIdToDetermineEquality, newPath))
{
yield return(patch);
}
}
yield break;
}
else
{
// Two values, same type, not JObject so no properties
if (left.ToString() == right.ToString())
{
yield break;
}
else
{
yield return(JsonDiffer.Replace(path, "", right));
}
}
}
