SymbolDisplayFormat: use '+' to separate nested types

[weifenluo]

I'm writing a source generator which I need to store a string in "{namespace}.{containingType}+{nestedType}+{...}" format so that I can generate:

namespace {namespace}
{
    partial class {containingType}
    {
        partial class {nestedType}
        {
            partial class {...}
            {
            }
        }
    }
}

I need nested types to be separated by '+' instead of '.' so that I can get the first type by looking for last '.' in the string.

The string is generated from INamedTypeSymbol. INamedTypeSymbol.ToDisplayString which accepts a SymbolDisplayFormat parameter, seems the right way to go. There is a SymbolDisplayCompilerInternalOptions.UsePlusForNestedTypes exactly doing this, however, SymbolDisplayFormat.CompilerInternalOptions is internal.

Am I missing something?

[CyrusNajmabadi]

I'm writing a source generator which I need to store a string in "{namespace}.{containingType}+{nestedType}+{...}" format so that I can generate:

You don't need to store a string for this. You could just store stuff like an list of tuples. Where each tuple contains the name and a boolean stating if it's a namespace or type to generate.