protoflow-derive 0.4.3

Protoflow implements flow-based programming (FBP) for Rust using Protocol Buffers messages.
Documentation 
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// This is free and unencumbered software released into the public domain.

use proc_macro2::{Span, TokenStream};
use proc_macro_crate::{crate_name, FoundCrate};
use quote::quote;
use syn::Ident;

pub(crate) fn protoflow_crate() -> TokenStream {
    let found_crate =
        crate_name("protoflow-core").expect("protoflow-core is present in `Cargo.toml`");
    match found_crate {
        FoundCrate::Itself => quote!(crate),
        FoundCrate::Name(name) => {
            let ident = Ident::new(&name, Span::call_site());
            quote!(#ident)
        }
    }
}