internal static bool AreParametersEqual(OpaqueDataDictionary parameters0, OpaqueDataDictionary parameters1, OpaqueDataDictionary defaultValues)
{
Debug.Assert(defaultValues != null, "defaultValues must not be empty.");
Debug.Assert(EmptyParameters != null && EmptyParameters.Count == 0);
// Same reference or both null?
if (parameters0 == parameters1)
{
return(true);
}
if (parameters0 == null)
{
parameters0 = EmptyParameters;
}
if (parameters1 == null)
{
parameters1 = EmptyParameters;
}
// Are both dictionaries empty?
if (parameters0.Count == 0 && parameters1.Count == 0)
{
return(true);
}
// Compare the values with the second dictionary or
// the default values.
if (parameters0.Count < parameters1.Count)
{
var dummy = parameters0;
parameters0 = parameters1;
parameters1 = dummy;
}
// Compare parameters0 with parameters1 or defaultValues.
foreach (var pair in parameters0)
{
object value0 = pair.Value;
// Search for matching parameter.
if (!parameters1.TryGetValue(pair.Key, out object value1) && !defaultValues.TryGetValue(pair.Key, out value1))
{
return(false);
}
if (!AreEqual(value0, value1))
{
return(false);
}
}
// Compare parameters which are only in parameters1 with defaultValues.
foreach (var pair in parameters1)
{
if (parameters0.ContainsKey(pair.Key))
{
continue;
}
if (!defaultValues.TryGetValue(pair.Key, out object defaultValue))
{
return(false);
}
if (!AreEqual(pair.Value, defaultValue))
{
return(false);
}
}
return(true);
}
internal static bool AreParametersEqual(OpaqueDataDictionary parameters0, OpaqueDataDictionary parameters1)
{
// Same reference or both null?
if (parameters0 == parameters1)
return true;
// Are both dictionaries are empty?
if ((parameters0 == null || parameters0.Count == 0) && (parameters1 == null || parameters1.Count == 0))
return true;
// Is one dictionary empty?
if (parameters0 == null || parameters1 == null)
return false;
// Is number of parameters different?
// (This assumes that default values are always set the same way, i.e.
// either parameters with default values are set in both dictionaries
// or omitted in both dictionaries!)
if (parameters0.Count != parameters1.Count)
return false;
// Compare parameter by parameter.
foreach (var pair in parameters0)
{
object value0 = pair.Value;
object value1;
if (!parameters1.TryGetValue(pair.Key, out value1))
return false;
// Are values equal or both null?
if (Equals(value0, value1))
continue;
// Is one value null?
if (value0 == null || value1 == null)
return false;
// Values are of different type: Compare string representation.
if (ConvertToString(value0) != ConvertToString(value1))
return false;
}
return true;
}
internal static bool AreParametersEqual(OpaqueDataDictionary parameters0, OpaqueDataDictionary parameters1, OpaqueDataDictionary defaultValues)
{
Debug.Assert(defaultValues != null, "defaultValues must not be empty.");
Debug.Assert(EmptyParameters != null && EmptyParameters.Count == 0);
// Same reference or both null?
if (parameters0 == parameters1)
return true;
if (parameters0 == null)
parameters0 = EmptyParameters;
if (parameters1 == null)
parameters1 = EmptyParameters;
// Are both dictionaries empty?
if (parameters0.Count == 0 && parameters1.Count == 0)
return true;
// Compare the values with the second dictionary or
// the default values.
if (parameters0.Count < parameters1.Count)
{
var dummy = parameters0;
parameters0 = parameters1;
parameters1 = dummy;
}
// Compare parameters0 with parameters1 or defaultValues.
foreach (var pair in parameters0)
{
object value0 = pair.Value;
object value1;
// Search for matching parameter.
if (!parameters1.TryGetValue(pair.Key, out value1) && !defaultValues.TryGetValue(pair.Key, out value1))
return false;
if (!AreEqual(value0, value1))
return false;
}
// Compare parameters which are only in parameters1 with defaultValues.
foreach (var pair in parameters1)
{
if (parameters0.ContainsKey(pair.Key))
continue;
object defaultValue;
if (!defaultValues.TryGetValue(pair.Key, out defaultValue))
return false;
if (!AreEqual(pair.Value, defaultValue))
return false;
}
return true;
}
internal static bool AreParametersEqual(OpaqueDataDictionary parameters0, OpaqueDataDictionary parameters1)
{
// Same reference or both null?
if (parameters0 == parameters1)
{
return(true);
}
// Are both dictionaries are empty?
if ((parameters0 == null || parameters0.Count == 0) && (parameters1 == null || parameters1.Count == 0))
{
return(true);
}
// Is one dictionary empty?
if (parameters0 == null || parameters1 == null)
{
return(false);
}
// Is number of parameters different?
// (This assumes that default values are always set the same way, i.e.
// either parameters with default values are set in both dictionaries
// or omitted in both dictionaries!)
if (parameters0.Count != parameters1.Count)
{
return(false);
}
// Compare parameter by parameter.
foreach (var pair in parameters0)
{
object value0 = pair.Value;
object value1;
if (!parameters1.TryGetValue(pair.Key, out value1))
{
return(false);
}
// Are values equal or both null?
if (Equals(value0, value1))
{
continue;
}
// Is one value null?
if (value0 == null || value1 == null)
{
return(false);
}
// Values are of different type: Compare string representation.
if (ConvertToString(value0) != ConvertToString(value1))
{
return(false);
}
}
return(true);
}
