3 #![feature(rustc_private)]
5 extern crate rustc_ast;
7 // Load rustc as a plugin to get macros
8 extern crate rustc_driver;
10 extern crate rustc_lint;
12 extern crate rustc_session;
14 use rustc_driver::plugin::Registry;
15 use rustc_lint::{EarlyContext, EarlyLintPass, LintArray, LintContext, LintPass};
17 declare_lint!(TEST_LINT, Warn, "Warn about items named 'lintme'");
19 declare_lint_pass!(Pass => [TEST_LINT]);
21 impl EarlyLintPass for Pass {
22 fn check_item(&mut self, cx: &EarlyContext, it: &ast::Item) {
23 if it.ident.name.as_str() == "lintme" {
24 cx.lint(TEST_LINT, |lint| {
25 lint.build("item is named 'lintme'").set_span(it.span).emit();
32 fn __rustc_plugin_registrar(reg: &mut Registry) {
33 reg.lint_store.register_lints(&[&TEST_LINT]);
34 reg.lint_store.register_early_pass(|| Box::new(Pass));