/// <summary>
/// Compare a dictionary
/// </summary>
/// <param name="object1"></param>
/// <param name="object2"></param>
/// <param name="breadCrumb"></param>
private void CompareIDictionary(object object1, object object2, string breadCrumb)
{
_parents.Add(object1);
_parents.Add(object2);
IDictionary iDict1 = object1 as IDictionary;
IDictionary iDict2 = object2 as IDictionary;
if (iDict1 == null) //This should never happen, null check happens one level up
{
throw new ArgumentNullException("object1");
}
if (iDict2 == null) //This should never happen, null check happens one level up
{
throw new ArgumentNullException("object2");
}
//Objects must be the same length
if (iDict1.Count != iDict2.Count)
{
Differences.Add(string.Format("object1{0}.Count != object2{0}.Count ({1},{2})", breadCrumb, iDict1.Count, iDict2.Count));
if (Differences.Count >= MaxDifferences)
{
return;
}
}
IDictionaryEnumerator enumerator1 = iDict1.GetEnumerator();
IDictionaryEnumerator enumerator2 = iDict2.GetEnumerator();
while (enumerator1.MoveNext() && enumerator2.MoveNext())
{
string currentBreadCrumb = AddBreadCrumb(breadCrumb, "Key", string.Empty, -1);
bool object1IsParent = enumerator1.Key != null && (enumerator1.Key == object1 || _parents.Contains(enumerator1.Key));
bool object2IsParent = enumerator2.Key != null && (enumerator2.Key == object2 || _parents.Contains(enumerator2.Key));
//Skip keys where both have been previously visited
if (!((enumerator1.Key == null) ||
(!IsClass(enumerator1.Key.GetType())) ||
(!object1IsParent || !object2IsParent)))
{
Compare(enumerator1.Key, enumerator2.Key, currentBreadCrumb);
if (Differences.Count >= MaxDifferences)
{
return;
}
}
currentBreadCrumb = AddBreadCrumb(breadCrumb, "Value", string.Empty, -1);
object1IsParent = enumerator1.Value != null && (enumerator1.Value == object1 || _parents.Contains(enumerator1.Value));
object2IsParent = enumerator2.Value != null && (enumerator2.Value == object2 || _parents.Contains(enumerator2.Value));
//Skip values where both have been previously visited
if ((enumerator1.Value != null) &&
(IsClass(enumerator1.Value.GetType())) &&
(object1IsParent && object2IsParent))
{
continue;
}
Compare(enumerator1.Value, enumerator2.Value, currentBreadCrumb);
if (Differences.Count >= MaxDifferences)
{
return;
}
}
}
/// <summary>
/// Compare a dictionary
/// </summary>
/// <param name="object1"></param>
/// <param name="object2"></param>
/// <param name="breadCrumb"></param>
void CompareIDictionary(object object1, object object2, string breadCrumb)
{
IDictionary iDict1 = object1 as IDictionary;
IDictionary iDict2 = object2 as IDictionary;
if (iDict1 == null) //This should never happen, null check happens one level up
{
throw new ArgumentNullException("object1");
}
if (iDict2 == null) //This should never happen, null check happens one level up
{
throw new ArgumentNullException("object2");
}
try
{
_parents.Add(object1);
_parents.Add(object2);
//Objects must be the same length
if (iDict1.Count != iDict2.Count)
{
Differences.Add(string.Format("object1{0}.Count != object2{0}.Count ({1},{2})", breadCrumb,
iDict1.Count, iDict2.Count));
if (Differences.Count >= MaxDifferences)
{
return;
}
}
IDictionaryEnumerator enumerator1 = iDict1.GetEnumerator();
IDictionaryEnumerator enumerator2 = iDict2.GetEnumerator();
while (enumerator1.MoveNext() && enumerator2.MoveNext())
{
string currentBreadCrumb = AddBreadCrumb(breadCrumb, "Key", string.Empty, -1);
Compare(enumerator1.Key, enumerator2.Key, currentBreadCrumb);
if (Differences.Count >= MaxDifferences)
{
return;
}
currentBreadCrumb = AddBreadCrumb(breadCrumb, "Value", string.Empty, -1);
Compare(enumerator1.Value, enumerator2.Value, currentBreadCrumb);
if (Differences.Count >= MaxDifferences)
{
return;
}
}
}
finally
{
_parents.Remove(object1);
_parents.Remove(object2);
}
}
/// <summary>
/// Compare two objects
/// </summary>
/// <param name="object1"></param>
/// <param name="object2"></param>
/// <param name="breadCrumb">Where we are in the object hiearchy</param>
private void Compare(object object1, object object2, string breadCrumb)
{
//If both null return true
if (object1 == null && object2 == null)
{
return;
}
//Check if one of them is null
if (object1 == null)
{
Differences.Add(string.Format("object1{0} == null && object2{0} != null ((null),{1})", breadCrumb, cStr(object2)));
return;
}
if (object2 == null)
{
Differences.Add(string.Format("object1{0} != null && object2{0} == null ({1},(null))", breadCrumb, cStr(object1)));
return;
}
Type t1 = object1.GetType();
Type t2 = object2.GetType();
//Objects must be the same type
if (t1 != t2)
{
Differences.Add(string.Format("Different Types: object1{0}.GetType() != object2{0}.GetType()", breadCrumb));
return;
}
Delegate customComparer;
if (_customComparers.TryGetValue(t1, out customComparer))
{
CompareWithCustomComparer(object1, object2, breadCrumb, t1, customComparer);
}
else if (IsIList(t1)) //This will do arrays, multi-dimensional arrays and generic lists
{
CompareIList(object1, object2, breadCrumb);
}
else if (IsIDictionary(t1))
{
CompareIDictionary(object1, object2, breadCrumb);
}
else if (IsEnum(t1))
{
CompareEnum(object1, object2, breadCrumb);
}
else if (IsSimpleType(t1))
{
CompareSimpleType(object1, object2, breadCrumb);
}
else if (IsClass(t1))
{
CompareClass(object1, object2, breadCrumb);
}
else if (IsTimespan(t1))
{
CompareTimespan(object1, object2, breadCrumb);
}
else if (IsStruct(t1))
{
CompareStruct(object1, object2, breadCrumb);
}
else
{
throw new NotImplementedException("Cannot compare object of type " + t1.Name);
}
}
void Compare(object object1, object object2, string breadCrumb)
{
if (object1 == null && object2 == null)
{
return;
}
if (object1 == null)
{
Differences.Add(string.Format("object1{0} == null && object2{0} != null ((null),{1})", breadCrumb,
cStr(object2)));
return;
}
if (object2 == null)
{
Differences.Add(string.Format("object1{0} != null && object2{0} == null ({1},(null))", breadCrumb,
cStr(object1)));
return;
}
Type t1 = object1.GetType();
Type t2 = object2.GetType();
if (t1 != t2)
{
Differences.Add(string.Format("Different Types: object1{0}.GetType() != object2{0}.GetType()",
breadCrumb));
return;
}
else if (IsIList(t1))
{
CompareIList(object1, object2, breadCrumb);
}
else if (IsIDictionary(t1))
{
CompareIDictionary(object1, object2, breadCrumb);
}
else if (IsEnum(t1))
{
CompareEnum(object1, object2, breadCrumb);
}
else if (IsPointer(t1))
{
ComparePointer(object1, object2, breadCrumb);
}
else if (IsSimpleType(t1))
{
CompareSimpleType(object1, object2, breadCrumb);
}
else if (IsClass(t1))
{
CompareClass(object1, object2, breadCrumb);
}
else if (IsTimespan(t1))
{
CompareTimespan(object1, object2, breadCrumb);
}
else if (IsStruct(t1))
{
CompareStruct(object1, object2, breadCrumb);
}
else
{
throw new NotImplementedException("Cannot compare object of type " + t1.Name);
}
}