vendor/proc-macro-error/src/imp/fallback.rs

   1 //! This implementation uses self-written stable facilities.
   2
   3 use crate::{
   4     abort_now, check_correctness,
   5     diagnostic::{Diagnostic, Level},
   6 };
   7 use std::cell::RefCell;
   8
   9 pub fn abort_if_dirty() {
  10     check_correctness();
  11     ERR_STORAGE.with(|storage| {
  12         if !storage.borrow().is_empty() {
  13             abort_now()
  14         }
  15     });
  16 }
  17
  18 pub(crate) fn cleanup() -> Vec<Diagnostic> {
  19     ERR_STORAGE.with(|storage| storage.replace(Vec::new()))
  20 }
  21
  22 pub(crate) fn emit_diagnostic(diag: Diagnostic) {
  23     if diag.level == Level::Error {
  24         ERR_STORAGE.with(|storage| storage.borrow_mut().push(diag));
  25     }
  26 }
  27
  28 thread_local! {
  29     static ERR_STORAGE: RefCell<Vec<Diagnostic>> = RefCell::new(Vec::new());
  30 }