public void SetAttribute(string name, object value)
{
if (value == default)
{
if (_attributes.Remove(name))
{
Dirty = true;
}
return;
}
if (_attributes.TryGetValue(name, out object existing))
{
try
{
if (ComparisonHelper.IsSameValue(existing, value))
{
return;
}
}
catch (Exception e)
{
throw new InvalidOperationException($"Unable to compare values for '{PublishTopic}'", e);
}
return;
}
_attributes[name] = value;
Dirty = true;
}
public static void SetIfChanged <T>(this JObject obj, string name, T newValue, Action onSet)
{
if (Equals(newValue, default(T)))
{
// Remove a value
if (obj.Remove(name))
{
onSet();
}
return;
}
void Overwrite()
{
obj[name] = JToken.FromObject(newValue);
onSet();
}
if (obj.TryGetValue(name, out JToken val) && val != null)
{
// Compare
if (newValue is Array newArray && val is JArray existingArray)
{
if (newArray.Length != existingArray.Count)
{
Overwrite();
return;
}
// Compare each value
for (int i = 0; i < newArray.Length; i++)
{
// TODO: Other types
if (!ComparisonHelper.IsSameValue(newArray.GetValue(i), existingArray.Value <string>(i)))
{
Overwrite();
return;
}
}
// No difference
}
else
{
T existing = val.Value <T>();
if (!ComparisonHelper.IsSameValue(existing, newValue))
{
Overwrite();
return;
}
}
}
public void SameValueTests()
{
DateTime dt = new DateTime(2021, 10, 11, 18, 33, 12, DateTimeKind.Utc);
DateTime dt2 = new DateTime(2021, 10, 11, 18, 33, 12, DateTimeKind.Utc);
Assert.True(ComparisonHelper.IsSameValue(dt, dt2));
DateTime dt3 = new DateTime(2021, 10, 11, 18, 33, 11, DateTimeKind.Utc);
Assert.False(ComparisonHelper.IsSameValue(dt, dt3));
Assert.True(ComparisonHelper.IsSameValue(50, 50));
Assert.False(ComparisonHelper.IsSameValue(50, 51));
Assert.True(ComparisonHelper.IsSameValue(1152921504606846976L, 1152921504606846976L));
Assert.False(ComparisonHelper.IsSameValue(1152921504606846977L, 1152921504606846975L));
}
public void SetAttribute(string name, object value)
{
if (value == default)
{
if (_attributes.Remove(name))
{
Dirty = true;
}
return;
}
if (_attributes.TryGetValue(name, out object existing) && ComparisonHelper.IsSameValue(existing, value))
{
return;
}
_attributes[name] = value;
Dirty = true;
}
