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// force-host
#![feature(rustc_private)]
extern crate rustc_driver;
extern crate rustc_hir;
extern crate rustc_lint;
#[macro_use]
extern crate rustc_session;
extern crate rustc_ast;
extern crate rustc_span;
use rustc_ast::attr;
use rustc_driver::plugin::Registry;
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_span::def_id::CRATE_DEF_ID;
use rustc_span::symbol::Symbol;
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) {
let attrs = cx.tcx.hir().attrs(rustc_hir::CRATE_HIR_ID);
let span = cx.tcx.def_span(CRATE_DEF_ID);
if !attr::contains_name(attrs, Symbol::intern("crate_okay")) {
cx.lint(CRATE_NOT_OKAY, "crate is not marked with #![crate_okay]", |lint| {
lint.set_span(span)
});
}
}
}
#[no_mangle]
fn __rustc_plugin_registrar(reg: &mut Registry) {
reg.lint_store.register_lints(&[&CRATE_NOT_OKAY]);
reg.lint_store.register_late_pass(|_| Box::new(Pass));
}
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