| // force-host |
| |
| #![feature(plugin_registrar, rustc_private)] |
| #![feature(box_syntax)] |
| |
| extern crate rustc_driver; |
| extern crate rustc_hir; |
| #[macro_use] |
| extern crate rustc_lint; |
| #[macro_use] |
| extern crate rustc_session; |
| extern crate rustc_span; |
| extern crate rustc_ast; |
| |
| use rustc_driver::plugin::Registry; |
| use rustc_lint::{LateContext, LateLintPass, LintArray, LintContext, LintPass}; |
| use rustc_span::symbol::Symbol; |
| use rustc_ast::attr; |
| |
| declare_lint! { |
| CRATE_NOT_OKAY, |
| Warn, |
| "crate not marked with #![crate_okay]" |
| } |
| |
| declare_lint_pass!(Pass => [CRATE_NOT_OKAY]); |
| |
| impl<'tcx> LateLintPass<'tcx> for Pass { |
| fn check_crate(&mut self, cx: &LateContext, krate: &rustc_hir::Crate) { |
| if !attr::contains_name(&krate.item.attrs, Symbol::intern("crate_okay")) { |
| cx.lint(CRATE_NOT_OKAY, |lint| { |
| lint.build("crate is not marked with #![crate_okay]") |
| .set_span(krate.item.span) |
| .emit() |
| }); |
| } |
| } |
| } |
| |
| #[plugin_registrar] |
| pub fn plugin_registrar(reg: &mut Registry) { |
| reg.lint_store.register_lints(&[&CRATE_NOT_OKAY]); |
| reg.lint_store.register_late_pass(|| box Pass); |
| } |