| // force-host |
| |
| #![feature(rustc_private)] |
| |
| extern crate rustc_ast; |
| |
| // Load rustc as a plugin to get macros |
| extern crate rustc_driver; |
| extern crate rustc_lint; |
| #[macro_use] |
| extern crate rustc_session; |
| |
| use rustc_ast::ast; |
| use rustc_driver::plugin::Registry; |
| use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; |
| |
| declare_lint!(TEST_LINT, Warn, "Warn about items named 'lintme'"); |
| |
| declare_lint_pass!(Pass => [TEST_LINT]); |
| |
| impl EarlyLintPass for Pass { |
| fn check_item(&mut self, cx: &EarlyContext, it: &ast::Item) { |
| if it.ident.name.as_str() == "lintme" { |
| cx.lint(TEST_LINT, "item is named 'lintme'", |lint| lint.set_span(it.span)); |
| } |
| } |
| } |
| |
| #[no_mangle] |
| fn __rustc_plugin_registrar(reg: &mut Registry) { |
| reg.lint_store.register_lints(&[&TEST_LINT]); |
| reg.lint_store.register_early_pass(|| Box::new(Pass)); |
| } |