private DifferenceType DiffConstraints(IDifferences differences, IReference target, IEnumerable <IGenericParameter> implGenericParams, IEnumerable <IGenericParameter> contractGenericParams)
{
int beforeCount = differences.Count();
IGenericParameter[] implParams = implGenericParams.ToArray();
IGenericParameter[] contractParams = contractGenericParams.ToArray();
// We shoudn't hit this because the types/members shouldn't be matched up if they have different generic argument lists
if (implParams.Length != contractParams.Length)
{
return(DifferenceType.Changed);
}
for (int i = 0; i < implParams.Length; i++)
{
IGenericParameter implParam = implParams[i];
IGenericParameter contractParam = contractParams[i];
if (contractParam.Variance != TypeParameterVariance.NonVariant &&
contractParam.Variance != implParam.Variance)
{
differences.AddIncompatibleDifference("CannotChangeVariance",
"Variance on generic parameter '{0}' for '{1}' is '{2}' in the implementation but '{3}' in the contract.",
implParam.FullName(), target.FullName(), implParam.Variance, contractParam.Variance);
}
string implConstraints = string.Join(",", GetConstraints(implParam).OrderBy(s => s, StringComparer.OrdinalIgnoreCase));
string contractConstraints = string.Join(",", GetConstraints(contractParam).OrderBy(s => s, StringComparer.OrdinalIgnoreCase));
if (!string.Equals(implConstraints, contractConstraints))
{
differences.AddIncompatibleDifference("CannotChangeGenericConstraints",
"Constraints for generic parameter '{0}' for '{1}' is '{2}' in the implementation but '{3}' in the contract.",
implParam.FullName(), target.FullName(), implConstraints, contractConstraints);
}
}
if (differences.Count() != beforeCount)
{
return(DifferenceType.Changed);
}
return(DifferenceType.Unknown);
}
private DifferenceType DiffConstraints(IDifferences differences, IReference target, IEnumerable<IGenericParameter> implGenericParams, IEnumerable<IGenericParameter> contractGenericParams)
{
int beforeCount = differences.Count();
IGenericParameter[] implParams = implGenericParams.ToArray();
IGenericParameter[] contractParams = contractGenericParams.ToArray();
// We shoudn't hit this because the types/members shouldn't be matched up if they have different generic argument lists
if (implParams.Length != contractParams.Length)
return DifferenceType.Changed;
for (int i = 0; i < implParams.Length; i++)
{
IGenericParameter implParam = implParams[i];
IGenericParameter contractParam = contractParams[i];
if (contractParam.Variance != TypeParameterVariance.NonVariant &&
contractParam.Variance != implParam.Variance)
{
differences.AddIncompatibleDifference("CannotChangeVariance",
"Variance on generic parameter '{0}' for '{1}' is '{2}' in the implementation but '{3}' in the contract.",
implParam.FullName(), target.FullName(), implParam.Variance, contractParam.Variance);
}
string implConstraints = string.Join(",", GetConstraints(implParam).OrderBy(s => s));
string contractConstraints = string.Join(",", GetConstraints(contractParam).OrderBy(s => s));
if (!string.Equals(implConstraints, contractConstraints))
{
differences.AddIncompatibleDifference("CannotChangeGenericConstraints",
"Constraints for generic parameter '{0}' for '{1}' is '{2}' in the implementation but '{3}' in the contract.",
implParam.FullName(), target.FullName(), implConstraints, contractConstraints);
}
}
if (differences.Count() != beforeCount)
return DifferenceType.Changed;
return DifferenceType.Unknown;
}