1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use proc_macro2::{Span, TokenStream};use proc_macro_crate::{crate_name, FoundCrate};use quote::quote;use syn::Ident;
/// Identifier to the `deno_core` crate.////// If macro called in deno_core, `crate` is used./// If macro called outside deno_core, `deno_core` OR the renamed/// version from Cargo.toml is used.pub(crate) fn import() -> TokenStream {  let found_crate =    crate_name("deno_core").expect("deno_core not present in `Cargo.toml`");
  match found_crate {    FoundCrate::Itself => {      // TODO(@littledivy): This won't work for `deno_core` examples      // since `crate` does not refer to `deno_core`.      // examples must re-export deno_core to make this work      // until Span inspection APIs are stabalized.      //      // https://github.com/rust-lang/rust/issues/54725      quote!(crate)    }    FoundCrate::Name(name) => {      let ident = Ident::new(&name, Span::call_site());      quote!(#ident)    }  }}