public static bool Equals(ITypeSymbol x, ITypeSymbol y)
{
if (ReferenceEquals(x, y))
{
return(true);
}
if (x == null ||
y == null)
{
return(false);
}
if (x.TypeKind != y.TypeKind)
{
return(false);
}
if (x is INamedTypeSymbol xNamedType &&
y is INamedTypeSymbol yNamedType)
{
return(NamedTypeSymbolComparer.Equals(xNamedType, yNamedType));
}
if (x.TypeKind == TypeKind.TypeParameter)
{
return(x.MetadataName == y.MetadataName &&
SymbolComparer.Equals(x.ContainingSymbol, y.ContainingSymbol));
}
return(x.MetadataName == y.MetadataName &&
Equals(x.ContainingType, y.ContainingType) &&
NamespaceSymbolComparer.Equals(x.ContainingNamespace, y.ContainingNamespace));
}
public static bool Equals(INamedTypeSymbol x, INamedTypeSymbol y)
{
if (ReferenceEquals(x, y))
{
return(true);
}
if (x == null ||
y == null)
{
return(false);
}
if (x.MetadataName != y.MetadataName ||
!TypeSymbolComparer.Equals(x.ContainingType, y.ContainingType) ||
!NamespaceSymbolComparer.Equals(x.ContainingNamespace, y.ContainingNamespace) ||
x.Arity != y.Arity)
{
return(false);
}
for (var i = 0; i < x.Arity; i++)
{
if (!TypeSymbolComparer.Equals(x.TypeArguments[i], y.TypeArguments[i]))
{
return(false);
}
}
return(true);
}
public static bool Equals(ISymbol x, ISymbol y)
{
if (ReferenceEquals(x, y))
{
return(true);
}
if (x == null ||
y == null)
{
return(false);
}
if (x is IEventSymbol xEvent &&
y is IEventSymbol yEvent)
{
return(EventSymbolComparer.Equals(xEvent, yEvent));
}
if (x is IFieldSymbol xField &&
y is IFieldSymbol yField)
{
return(FieldSymbolComparer.Equals(xField, yField));
}
if (x is ILocalSymbol xLocal &&
y is ILocalSymbol yLocal)
{
return(LocalSymbolComparer.Equals(xLocal, yLocal));
}
if (x is IMethodSymbol xMethod &&
y is IMethodSymbol yMethod)
{
return(MethodSymbolComparer.Equals(xMethod, yMethod));
}
if (x is INamedTypeSymbol xNamedType &&
y is INamedTypeSymbol yNamedType)
{
return(NamedTypeSymbolComparer.Equals(xNamedType, yNamedType));
}
if (x is INamespaceSymbol xNamespace &&
y is INamespaceSymbol yNamespace)
{
return(NamespaceSymbolComparer.Equals(xNamespace, yNamespace));
}
if (x is IParameterSymbol xParameter &&
y is IParameterSymbol yParameter)
{
return(ParameterSymbolComparer.Equals(xParameter, yParameter));
}
if (x is IPropertySymbol xProperty &&
y is IPropertySymbol yProperty)
{
return(PropertySymbolComparer.Equals(xProperty, yProperty));
}
if (x is ITypeSymbol xType &&
y is ITypeSymbol yType)
{
return(TypeSymbolComparer.Equals(xType, yType));
}
return(x.Equals(y));
}