/// <summary>
/// Determines whether an <see cref="ISymbol"/> must be visited.
/// </summary>
/// <param name="symbol">The symbol to visit.</param>
/// <returns>A value indicating whether the <see cref="ISymbol"/> must be visited.</returns>
private bool CanSymbolBeVisited(ISymbol symbol)
{
// Do not visit compiler generated symbols.
if (symbol.IsCompilerGenerated())
{
return(false);
}
bool result = true;
VisitorDepth depth = options.GetVisitorDepth();
switch (symbol)
{
case INamespaceSymbol _:
result = depth >= VisitorDepth.Namespace;
break;
case INamedTypeSymbol namedTypeSymbol when namedTypeSymbol.TypeKind == TypeKind.Class:
result = depth >= VisitorDepth.NamedType && classFilter?.Invoke(namedTypeSymbol) != false;
break;
case INamedTypeSymbol namedTypeSymbol when namedTypeSymbol.TypeKind == TypeKind.Struct:
result = depth >= VisitorDepth.NamedType && structFilter?.Invoke(namedTypeSymbol) != false;
break;
case INamedTypeSymbol namedTypeSymbol when namedTypeSymbol.TypeKind == TypeKind.Enum:
result = depth >= VisitorDepth.NamedType && enumFilter?.Invoke(namedTypeSymbol) != false;
break;
case INamedTypeSymbol namedTypeSymbol when namedTypeSymbol.TypeKind == TypeKind.Interface:
result = depth >= VisitorDepth.NamedType && interfaceFilter?.Invoke(namedTypeSymbol) != false;
break;
case IMethodSymbol methodSymbol:
result = depth >= VisitorDepth.Members && methodFilter?.Invoke(methodSymbol) != false;
break;
case IPropertySymbol propertySymbol:
result = depth >= VisitorDepth.Members && propertyFilter?.Invoke(propertySymbol) != false;
break;
case IFieldSymbol fieldSymbol:
result = depth >= VisitorDepth.Members && fieldFilter?.Invoke(fieldSymbol) != false;
break;
case IParameterSymbol parameterSymbol:
result = depth >= VisitorDepth.Parameters && parameterFilter?.Invoke(parameterSymbol) != false;
break;
case ITypeParameterSymbol typeParameterSymbol:
result = typeParameterFilter(typeParameterSymbol);
break;
}
return(result);
}
internal VisitorDepth GetVisitorDepth()
{
VisitorDepth depth = VisitorDepth.None;
depth = GetNamespaces ? VisitorDepth.Namespace : depth;
depth = GetInterfaces || GetClasses || GetStructs || GetEnums ? VisitorDepth.NamedType : depth;
depth = GetMethods || GetProperties || GetFields ? VisitorDepth.Members : depth;
depth = GetParameters ? VisitorDepth.Parameters : depth;
return(depth);
}