77 lines
2.2 KiB
Rust
77 lines
2.2 KiB
Rust
//! # Note
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//!
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//! This API is completely unstable and subject to change.
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#![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
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#![feature(arbitrary_self_types)]
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#![feature(box_patterns)]
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#![feature(box_syntax)]
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#![feature(core_intrinsics)]
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#![cfg_attr(bootstrap, feature(never_type))]
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#![feature(nll)]
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#![feature(in_band_lifetimes)]
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#![recursion_limit="256"]
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#[macro_use]
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extern crate rustc;
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use rustc::ty::TyCtxt;
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use rustc::ty::query::Providers;
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use rustc::hir::def_id::{LOCAL_CRATE, DefId};
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use syntax::symbol::sym;
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pub mod link;
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pub mod codegen_backend;
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pub mod symbol_names;
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pub mod symbol_names_test;
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pub fn trigger_delay_span_bug(tcx: TyCtxt<'_>, key: DefId) {
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tcx.sess.delay_span_bug(
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tcx.def_span(key),
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"delayed span bug triggered by #[rustc_error(delay_span_bug_from_inside_query)]"
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);
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}
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/// check for the #[rustc_error] annotation, which forces an
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/// error in codegen. This is used to write compile-fail tests
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/// that actually test that compilation succeeds without
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/// reporting an error.
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pub fn check_for_rustc_errors_attr(tcx: TyCtxt<'_>) {
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if let Some((def_id, _)) = tcx.entry_fn(LOCAL_CRATE) {
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let attrs = &*tcx.get_attrs(def_id);
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for attr in attrs {
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if attr.check_name(sym::rustc_error) {
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match attr.meta_item_list() {
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// check if there is a #[rustc_error(delayed)]
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Some(list) => {
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if list.iter().any(|list_item| {
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list_item.ident().map(|i| i.name) ==
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Some(sym::delay_span_bug_from_inside_query)
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}) {
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tcx.ensure().trigger_delay_span_bug(def_id);
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}
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}
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// bare #[rustc_error]
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None => {
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tcx.sess.span_fatal(
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tcx.def_span(def_id),
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"fatal error triggered by #[rustc_error]"
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);
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}
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}
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}
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}
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}
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}
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pub fn provide(providers: &mut Providers<'_>) {
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crate::symbol_names::provide(providers);
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*providers = Providers {
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trigger_delay_span_bug,
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..*providers
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};
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}
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