power-instruction-analyzer-proc-macro/src/lib.rs

   1 // SPDX-License-Identifier: LGPL-2.1-or-later
   2 // See Notices.txt for copyright information
   3
   4 #[macro_use]
   5 mod inline_assembly;
   6 mod instructions;
   7
   8 use instructions::Instructions;
   9 use proc_macro::TokenStream;
  10 use quote::quote;
  11 use std::{env, fs, path::Path};
  12 use syn::parse_macro_input;
  13
  14 #[proc_macro]
  15 pub fn instructions(input: TokenStream) -> TokenStream {
  16     let input = parse_macro_input!(input as Instructions);
  17     match input.to_tokens() {
  18         Ok(retval) => {
  19             fs::write(
  20                 Path::new(&env::var_os("CARGO_MANIFEST_DIR").unwrap()).join("out.rs"),
  21                 retval.to_string(),
  22             )
  23             .unwrap();
  24             quote! {
  25                 include!(concat!(env!("CARGO_MANIFEST_DIR"), "/out.rs"));
  26             }
  27         }
  28         Err(err) => err.to_compile_error(),
  29     }
  30     .into()
  31 }