public static IEnumerable <INamedTypeSymbol> GetInterfaces(this ISymbolMetaInfo <ITypeSymbol> meta, Type type)
{
if (!type.IsInterface)
{
throw new ArgumentException(nameof(type));
}
var interfaceSymbol = meta.SymbolProvider.GetSymbol(type);
if (type.IsGenericTypeDefinition)
{
return(meta.Symbol.AllInterfaces.Where(x => x.IsGenericType).Where(x => x.ConstructedFrom.Equals(interfaceSymbol, SymbolEqualityComparer.Default)));
}
return(meta.Symbol.AllInterfaces.Where(x => x.Equals(interfaceSymbol, SymbolEqualityComparer.Default)));
}
public static bool InheritFrom(this ISymbolMetaInfo <ITypeSymbol> meta, ITypeSymbol baseType)
{
ITypeSymbol symbol = meta.Symbol;
while (symbol.BaseType != null)
{
if (symbol.BaseType.Equals(baseType, SymbolEqualityComparer.Default))
{
return(true);
}
symbol = symbol.BaseType;
}
return(false);
}
public static bool InheritFrom <T>(this ISymbolMetaInfo <ITypeSymbol> meta) => meta.InheritFrom(meta.SymbolProvider.GetSymbol <T>() !);
public static bool Implements <T>(this ISymbolMetaInfo <ITypeSymbol> meta) => meta.Implements(typeof(T));
public static bool Implements(this ISymbolMetaInfo <ITypeSymbol> meta, Type type) => meta.GetInterfaces(type).Any();
