60 lines
1.6 KiB
Rust
60 lines
1.6 KiB
Rust
#![feature(plugin, rustc_private)]
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#![crate_type = "dylib"]
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extern crate rustc_ast_pretty;
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extern crate rustc_driver;
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extern crate rustc_hir;
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extern crate rustc_lint;
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#[macro_use]
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extern crate rustc_session;
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extern crate rustc_ast;
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extern crate rustc_span;
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use rustc_ast_pretty::pprust;
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use rustc_driver::plugin::Registry;
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use rustc_hir as hir;
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use rustc_hir::intravisit;
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use rustc_hir::Node;
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use rustc_lint::{LateContext, LateLintPass, LintContext};
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use rustc_span::source_map;
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#[no_mangle]
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fn __rustc_plugin_registrar(reg: &mut Registry) {
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reg.lint_store.register_lints(&[&MISSING_ALLOWED_ATTR]);
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reg.lint_store.register_late_pass(|_| Box::new(MissingAllowedAttrPass));
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}
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declare_lint! {
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MISSING_ALLOWED_ATTR,
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Deny,
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"Checks for missing `allowed_attr` attribute"
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}
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declare_lint_pass!(MissingAllowedAttrPass => [MISSING_ALLOWED_ATTR]);
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impl<'tcx> LateLintPass<'tcx> for MissingAllowedAttrPass {
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fn check_fn(
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&mut self,
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cx: &LateContext<'tcx>,
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_: intravisit::FnKind<'tcx>,
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_: &'tcx hir::FnDecl,
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_: &'tcx hir::Body,
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span: source_map::Span,
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id: hir::HirId,
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) {
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let item = match cx.tcx.hir().get(id) {
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Node::Item(item) => item,
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_ => cx.tcx.hir().expect_item(cx.tcx.hir().get_parent_item(id).def_id),
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};
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let allowed = |attr| pprust::attribute_to_string(attr).contains("allowed_attr");
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if !cx.tcx.hir().attrs(item.hir_id()).iter().any(allowed) {
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cx.lint(
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MISSING_ALLOWED_ATTR,
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"Missing 'allowed_attr' attribute",
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|lint| lint.set_span(span)
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);
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}
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}
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}
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