/// <summary>
/// Guesses the base type kind basing on the name of the base type.
/// </summary>
/// <param name="baseTypes"></param>
/// <returns></returns>
/// <remarks>
///
/// </remarks>
public static IEnumerable <BaseTypeInfo> SeparateClassAndInterfacesBasedOnNames(IEnumerable <BaseTypeSyntax> baseTypes)
{
if (!CanSeparateClassAndInterfacesBasedOnNames(baseTypes))
{
throw new ArgumentException(nameof(baseTypes), "The provided collection of base types cannot be evaluated via this approach");
}
var infos = new List <BaseTypeInfo>();
foreach (var baseType in baseTypes)
{
var helper = new BaseTypeReference(baseType);
var name = helper.Name;
var firstLetter = name[0];
if (firstLetter == 'I')
{
infos.Add(new BaseTypeInfo()
{
Node = baseType, Kind = Roslyn.TypeKind.Interface
});
}
else
{
infos.Add(new BaseTypeInfo()
{
Node = baseType, Kind = Roslyn.TypeKind.Class
});
}
}
return(infos);
}
private static void TestRetrieveTypeName(BaseTypeSyntax baseTypeNode, string expected)
{
Assert.IsNotNull(baseTypeNode, "Found node should be of type `{0}`!",
typeof(BaseTypeSyntax).Name);
BaseTypeReference baseTypeReference = new BaseTypeReference(baseTypeNode);
string name = baseTypeReference.Name;
Assert.IsNotNull(name, "Type name should not be null!");
Assert.AreNotEqual(string.Empty, name, "Type name should not be empty!");
Assert.AreEqual(expected, name, "Type name is not the one in source!");
}
/// <summary>
/// Guesses the base type kind basing on name.
/// </summary>
/// <param name="baseType"></param>
/// <returns></returns>
public static Roslyn.TypeKind GuessBaseTypeKindFromName(BaseTypeSyntax baseType)
{
var helper = new BaseTypeReference(baseType);
var name = helper.Name;
var firstLetter = name[0];
if (firstLetter == 'I')
{
return(Roslyn.TypeKind.Interface);
}
return(Roslyn.TypeKind.Class);
}
/// <summary>
/// Parse the given descriptor into a type reference.
/// </summary>
private static TypeReference Parse(string descriptor)
{
if (descriptor.StartsWith("["))
{
return(new ArrayTypeReference(Parse(descriptor.Substring(1))));
}
if (descriptor.StartsWith("L") && descriptor.EndsWith(";"))
{
return(Parse(descriptor.Substring(1, descriptor.Length - 2)));
}
BaseTypeReference baseType;
if ((descriptor.Length == 1) && BaseTypeReference.TryGetByCode(descriptor[0], out baseType))
{
return(baseType);
}
return(new ObjectTypeReference(descriptor, null));
}
private static void TestRetrieveBaseClassName(ClassDeclarationSyntax classDeclarationNode, SemanticModel semanticModel, string expected)
{
Assert.IsNotNull(classDeclarationNode, "Found node should be of type `{0}`!",
typeof(ClassDeclarationSyntax).Name);
ClassDeclaration classDeclaration = new ClassDeclaration(classDeclarationNode, semanticModel);
BaseTypeReference baseClass = classDeclaration.BaseClass;
if (expected == null)
{
Assert.IsNull(baseClass, "Class name should be null!");
return;
}
string name = classDeclaration.BaseClass.Name;
Assert.IsNotNull(name, "Class name should not be null!");
Assert.AreNotEqual(string.Empty, name, "Class name should not be empty!");
Assert.AreEqual(expected, name, "Base class name is not the one in source!");
}
/// <summary>
/// Used for assessing whether <see cref="SeparateClassAndInterfacesBasedOnNames"/> can be used for separating class and interfaces.
/// </summary>
/// <param name="baseTypes"></param>
/// <returns></returns>
public static bool CanSeparateClassAndInterfacesBasedOnNames(IEnumerable <BaseTypeSyntax> baseTypes)
{
int nameStartsWithIBaseTypes = 0;
int nameDoesNotStartWithIBaseTypes = 0;
foreach (var baseType in baseTypes)
{
var helper = new BaseTypeReference(baseType);
var name = helper.Name;
var firstLetter = name[0];
if (firstLetter == 'I')
{
nameStartsWithIBaseTypes++;
}
else
{
nameDoesNotStartWithIBaseTypes++;
}
}
return(nameDoesNotStartWithIBaseTypes <= 1);
}
/// <summary>
/// Guesses the base type kind basing on the name of the base type.
/// </summary>
/// <param name="baseTypes"></param>
/// <returns></returns>
public static IEnumerable <BaseTypeInfo> SeparateClassAndInterfacesBasedOnNames(IEnumerable <BaseTypeSyntax> baseTypes)
{
if (!CanSeparateClassAndInterfacesBasedOnNames(baseTypes))
{
var names = baseTypes.Select(baseType => new BaseTypeReference(baseType).Name).Aggregate((i, j) => $"{i}; {j}");
throw new UnableToDiscriminateBasetypeCollectionByNameException(
$"The provided collection of base types: [{names}] cannot be evaluated with this approach",
new ArgumentException(nameof(baseTypes)));
}
var infos = new List <BaseTypeInfo>();
foreach (var baseType in baseTypes)
{
var helper = new BaseTypeReference(baseType);
var name = helper.Name;
var firstLetter = name[0];
if (firstLetter == 'I')
{
infos.Add(new BaseTypeInfo()
{
Node = baseType, Kind = Roslyn.TypeKind.Interface
});
}
else
{
infos.Add(new BaseTypeInfo()
{
Node = baseType, Kind = Roslyn.TypeKind.Class
});
}
}
return(infos);
}
