| #![feature(box_syntax, plugin, plugin_registrar, rustc_private)] |
| #![crate_type = "dylib"] |
| |
| extern crate rustc_ast_pretty; |
| 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_ast_pretty::pprust; |
| use rustc_driver::plugin::Registry; |
| use rustc_hir as hir; |
| use rustc_hir::intravisit; |
| use rustc_hir::Node; |
| use rustc_lint::{LateContext, LateLintPass, LintArray, LintContext, LintPass}; |
| use rustc_span::source_map; |
| |
| #[plugin_registrar] |
| pub fn plugin_registrar(reg: &mut Registry) { |
| reg.lint_store.register_lints(&[&MISSING_ALLOWED_ATTR]); |
| reg.lint_store.register_late_pass(|| box MissingAllowedAttrPass); |
| } |
| |
| declare_lint! { |
| MISSING_ALLOWED_ATTR, |
| Deny, |
| "Checks for missing `allowed_attr` attribute" |
| } |
| |
| declare_lint_pass!(MissingAllowedAttrPass => [MISSING_ALLOWED_ATTR]); |
| |
| impl<'tcx> LateLintPass<'tcx> for MissingAllowedAttrPass { |
| fn check_fn( |
| &mut self, |
| cx: &LateContext<'tcx>, |
| _: intravisit::FnKind<'tcx>, |
| _: &'tcx hir::FnDecl, |
| _: &'tcx hir::Body, |
| span: source_map::Span, |
| id: hir::HirId, |
| ) { |
| let item = match cx.tcx.hir().get(id) { |
| Node::Item(item) => item, |
| _ => cx.tcx.hir().expect_item(cx.tcx.hir().get_parent_item(id)), |
| }; |
| |
| let allowed = |attr| pprust::attribute_to_string(attr).contains("allowed_attr"); |
| if !item.attrs.iter().any(allowed) { |
| cx.lint(MISSING_ALLOWED_ATTR, |lint| { |
| lint.build("Missing 'allowed_attr' attribute").set_span(span).emit() |
| }); |
| } |
| } |
| } |