tests/ui-fulldeps/auxiliary/lint-group-plugin-test.rs

   1 // force-host
   2
   3 #![feature(rustc_private)]
   4
   5 // Load rustc as a plugin to get macros.
   6 extern crate rustc_driver;
   7 extern crate rustc_hir;
   8 #[macro_use]
   9 extern crate rustc_lint;
  10 #[macro_use]
  11 extern crate rustc_session;
  12
  13 use rustc_driver::plugin::Registry;
  14 use rustc_lint::{LateContext, LateLintPass, LintArray, LintContext, LintId, LintPass};
  15
  16 declare_lint!(TEST_LINT, Warn, "Warn about items named 'lintme'");
  17
  18 declare_lint!(PLEASE_LINT, Warn, "Warn about items named 'pleaselintme'");
  19
  20 declare_lint_pass!(Pass => [TEST_LINT, PLEASE_LINT]);
  21
  22 impl<'tcx> LateLintPass<'tcx> for Pass {
  23     fn check_item(&mut self, cx: &LateContext, it: &rustc_hir::Item) {
  24         match it.ident.as_str() {
  25             "lintme" => cx.lint(TEST_LINT, "item is named 'lintme'", |lint| lint.set_span(it.span)),
  26             "pleaselintme" => {
  27                 cx.lint(PLEASE_LINT, "item is named 'pleaselintme'", |lint| lint.set_span(it.span))
  28             }
  29             _ => {}
  30         }
  31     }
  32 }
  33
  34 #[no_mangle]
  35 fn __rustc_plugin_registrar(reg: &mut Registry) {
  36     reg.lint_store.register_lints(&[&TEST_LINT, &PLEASE_LINT]);
  37     reg.lint_store.register_late_pass(|_| Box::new(Pass));
  38     reg.lint_store.register_group(
  39         true,
  40         "lint_me",
  41         None,
  42         vec![LintId::of(&TEST_LINT), LintId::of(&PLEASE_LINT)],
  43     );
  44 }