public void DescendantsAndSelf_NestedObjects_ReturnsAllSubsequencesAndSelf()
{
var input = new[]
{
ModelGrammar.TokenObjectBeginUnnamed,
ModelGrammar.TokenProperty("One"),
ModelGrammar.TokenNull,
ModelGrammar.TokenProperty("Two"),
ModelGrammar.TokenArrayBeginUnnamed,
ModelGrammar.TokenTrue,
ModelGrammar.TokenPrimitive("2-B"),
ModelGrammar.TokenPrimitive(23),
ModelGrammar.TokenArrayEnd,
ModelGrammar.TokenProperty("Three"),
ModelGrammar.TokenObjectBeginUnnamed,
ModelGrammar.TokenProperty("A"),
ModelGrammar.TokenPrimitive("3-A"),
ModelGrammar.TokenProperty("B"),
ModelGrammar.TokenPrimitive(32),
ModelGrammar.TokenProperty("C"),
ModelGrammar.TokenPrimitive("3-C"),
ModelGrammar.TokenObjectEnd,
ModelGrammar.TokenProperty("Four"),
ModelGrammar.TokenPrimitive(4),
ModelGrammar.TokenObjectEnd
};
var expected = new[]
{
new[]
{
ModelGrammar.TokenObjectBeginUnnamed,
ModelGrammar.TokenProperty("One"),
ModelGrammar.TokenNull,
ModelGrammar.TokenProperty("Two"),
ModelGrammar.TokenArrayBeginUnnamed,
ModelGrammar.TokenTrue,
ModelGrammar.TokenPrimitive("2-B"),
ModelGrammar.TokenPrimitive(23),
ModelGrammar.TokenArrayEnd,
ModelGrammar.TokenProperty("Three"),
ModelGrammar.TokenObjectBeginUnnamed,
ModelGrammar.TokenProperty("A"),
ModelGrammar.TokenPrimitive("3-A"),
ModelGrammar.TokenProperty("B"),
ModelGrammar.TokenPrimitive(32),
ModelGrammar.TokenProperty("C"),
ModelGrammar.TokenPrimitive("3-C"),
ModelGrammar.TokenObjectEnd,
ModelGrammar.TokenProperty("Four"),
ModelGrammar.TokenPrimitive(4),
ModelGrammar.TokenObjectEnd
},
new[]
{
ModelGrammar.TokenNull
},
new[]
{
ModelGrammar.TokenArrayBeginUnnamed,
ModelGrammar.TokenTrue,
ModelGrammar.TokenPrimitive("2-B"),
ModelGrammar.TokenPrimitive(23),
ModelGrammar.TokenArrayEnd
},
new[]
{
ModelGrammar.TokenTrue
},
new[]
{
ModelGrammar.TokenPrimitive("2-B")
},
new[]
{
ModelGrammar.TokenPrimitive(23)
},
new[]
{
ModelGrammar.TokenObjectBeginUnnamed,
ModelGrammar.TokenProperty("A"),
ModelGrammar.TokenPrimitive("3-A"),
ModelGrammar.TokenProperty("B"),
ModelGrammar.TokenPrimitive(32),
ModelGrammar.TokenProperty("C"),
ModelGrammar.TokenPrimitive("3-C"),
ModelGrammar.TokenObjectEnd
},
new[]
{
ModelGrammar.TokenPrimitive("3-A")
},
new[]
{
ModelGrammar.TokenPrimitive(32)
},
new[]
{
ModelGrammar.TokenPrimitive("3-C")
},
new[]
{
ModelGrammar.TokenPrimitive(4),
}
};
// select all descendants and self
var actual = input.DescendantsAndSelf().ToArray();
Assert.Equal(expected, actual, false);
}
internal static void RemoveDuplicateNamespaceAttributes(System.Xml.Linq.XElement element)
{
Debug.Assert(element != null, "element != null");
HashSet<string> names = new HashSet<string>(EqualityComparer<string>.Default);
foreach (System.Xml.Linq.XElement e in element.DescendantsAndSelf())
{
bool attributesFound = false;
foreach (var attribute in e.Attributes())
{
if (!attributesFound)
{
attributesFound = true;
names.Clear();
}
if (attribute.IsNamespaceDeclaration)
{
string localName = attribute.Name.LocalName;
bool alreadyPresent = names.Add(localName) == false;
if (alreadyPresent)
{
attribute.Remove();
}
}
}
}
}
/// <summary>Recursively removes duplicate namespace attributes from the specified <paramref name="element"/>.</summary>
/// <param name="element">Element to remove duplicate attributes from.</param>
internal static void RemoveDuplicateNamespaceAttributes(System.Xml.Linq.XElement element)
{
Debug.Assert(element != null, "element != null");
// Nesting XElements through our client wrappers may produce duplicate namespaces.
// Might need an XML fix, but won't happen for 3.5 for back compat.
HashSet<string> names = new HashSet<string>(EqualityComparer<string>.Default);
foreach (System.Xml.Linq.XElement e in element.DescendantsAndSelf())
{
bool attributesFound = false;
foreach (var attribute in e.Attributes())
{
if (!attributesFound)
{
attributesFound = true;
names.Clear();
}
if (attribute.IsNamespaceDeclaration)
{
string localName = attribute.Name.LocalName;
bool alreadyPresent = names.Add(localName) == false;
if (alreadyPresent)
{
attribute.Remove();
}
}
}
}
}
