public static string GetCountOrLengthPropertyName(
ITypeSymbol typeSymbol,
SemanticModel semanticModel,
int position)
{
SymbolKind kind = typeSymbol.Kind;
if (kind == SymbolKind.ErrorType)
{
return(null);
}
if (kind == SymbolKind.ArrayType)
{
return("Length");
}
string propertyName = GetCountOrLengthPropertyName(typeSymbol.SpecialType);
if (propertyName != null)
{
return((propertyName.Length > 0) ? propertyName : null);
}
ITypeSymbol originalDefinition = typeSymbol.OriginalDefinition;
if (!typeSymbol.Equals(originalDefinition))
{
propertyName = GetCountOrLengthPropertyName(originalDefinition.SpecialType);
if (propertyName != null)
{
return((propertyName.Length > 0) ? propertyName : null);
}
}
if (originalDefinition.ImplementsAny(
SpecialType.System_Collections_Generic_ICollection_T,
SpecialType.System_Collections_Generic_IReadOnlyCollection_T,
allInterfaces: true))
{
if (originalDefinition.TypeKind == TypeKind.Interface)
{
return("Count");
}
foreach (ISymbol symbol in typeSymbol.GetMembers())
{
if (symbol.Kind == SymbolKind.Property &&
StringUtility.Equals(symbol.Name, "Count", "Length") &&
semanticModel.IsAccessible(position, symbol))
{
return(symbol.Name);
}
}
}
return(null);
string GetCountOrLengthPropertyName(SpecialType specialType)
{
switch (specialType)
{
case SpecialType.System_String:
case SpecialType.System_Array:
return("Length");
case SpecialType.System_Collections_Generic_IList_T:
case SpecialType.System_Collections_Generic_ICollection_T:
case SpecialType.System_Collections_Generic_IReadOnlyList_T:
case SpecialType.System_Collections_Generic_IReadOnlyCollection_T:
return("Count");
case SpecialType.None:
return(null);
}
return("");
}
}
public static bool IsPublicInstance(IPropertySymbol propertySymbol, string name = null)
{
return(propertySymbol?.DeclaredAccessibility == Accessibility.Public &&
!propertySymbol.IsStatic &&
StringUtility.IsNullOrEquals(name, propertySymbol.Name));
}
public static string CreateName(ITypeSymbol typeSymbol)
{
if (typeSymbol == null)
{
throw new ArgumentNullException(nameof(typeSymbol));
}
if (typeSymbol.IsKind(SymbolKind.ErrorType, SymbolKind.DynamicType))
{
return(null);
}
ITypeSymbol typeSymbol2 = ExtractFromNullableType(typeSymbol);
ITypeSymbol typeSymbol3 = ExtractFromArrayOrGenericCollection(typeSymbol2);
string name = GetName(typeSymbol3);
if (string.IsNullOrEmpty(name))
{
return(null);
}
if (typeSymbol3.TypeKind == TypeKind.Interface &&
name.Length > 1 &&
name[0] == 'I')
{
name = name.Substring(1);
}
if (name.Length >= 8 &&
name.EndsWith("Syntax", StringComparison.Ordinal) &&
typeSymbol.EqualsOrInheritsFrom(MetadataNames.Microsoft_CodeAnalysis_SyntaxNode))
{
name = name.Remove(name.Length - 6);
}
if (name.Length > 1 &&
UsePlural(typeSymbol2))
{
if (!StringUtility.TryRemoveSuffix(name, "Collection", out name))
{
StringUtility.TryRemoveSuffix(name, "List", out name);
}
if (name.EndsWith("s", StringComparison.Ordinal) || name.EndsWith("x", StringComparison.Ordinal))
{
name += "es";
}
else if (name.EndsWith("y", StringComparison.Ordinal))
{
name = name.Remove(name.Length - 1) + "ies";
}
else
{
name += "s";
}
}
return(name);
}