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// force-host
#![feature(rustc_private)]
extern crate rustc_driver;
extern crate rustc_hir;
extern crate rustc_lint;
extern crate rustc_span;
#[macro_use]
extern crate rustc_session;
extern crate rustc_ast;
use rustc_ast::attr;
use rustc_driver::plugin::Registry;
use rustc_lint::{LateContext, LateLintPass, LintContext, LintPass};
use rustc_span::def_id::CRATE_DEF_ID;
use rustc_span::symbol::Symbol;
macro_rules! fake_lint_pass {
($struct:ident, $($attr:expr),*) => {
struct $struct;
impl LintPass for $struct {
fn name(&self) -> &'static str {
stringify!($struct)
}
}
impl LateLintPass<'_> for $struct {
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 !cx.sess().contains_name(attrs, $attr) {
cx.lint(CRATE_NOT_OKAY, |lint| {
let msg = format!("crate is not marked with #![{}]", $attr);
lint.build(&msg).set_span(span).emit();
});
}
)*
}
}
}
}
declare_lint!(CRATE_NOT_OKAY, Warn, "crate not marked with #![crate_okay]");
declare_lint!(CRATE_NOT_RED, Warn, "crate not marked with #![crate_red]");
declare_lint!(CRATE_NOT_BLUE, Warn, "crate not marked with #![crate_blue]");
declare_lint!(CRATE_NOT_GREY, Warn, "crate not marked with #![crate_grey]");
declare_lint!(CRATE_NOT_GREEN, Warn, "crate not marked with #![crate_green]");
fake_lint_pass! {
PassOkay,
Symbol::intern("crate_okay")
}
fake_lint_pass! {
PassRedBlue,
Symbol::intern("crate_red"), Symbol::intern("crate_blue")
}
fake_lint_pass! {
PassGreyGreen,
Symbol::intern("crate_grey"), Symbol::intern("crate_green")
}
#[no_mangle]
fn __rustc_plugin_registrar(reg: &mut Registry) {
reg.lint_store.register_lints(&[
&CRATE_NOT_OKAY,
&CRATE_NOT_RED,
&CRATE_NOT_BLUE,
&CRATE_NOT_GREY,
&CRATE_NOT_GREEN,
]);
reg.lint_store.register_late_pass(|_| Box::new(PassOkay));
reg.lint_store.register_late_pass(|_| Box::new(PassRedBlue));
reg.lint_store.register_late_pass(|_| Box::new(PassGreyGreen));
}
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