bjoernager/rust
bjoernager/rust
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Make resolutions a query.

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This commit is contained in:
Camille GILLOT 2021-04-04 14:40:35 +02:00
parent 139f7ad637
commit 5d9f96ab27
13 changed files with 120 additions and 101 deletions
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29
compiler/rustc_passes/src/entry.rs
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@ -147,19 +147,22 @@ fn configure_main(tcx: TyCtxt<'_>, visitor: &EntryContext<'_, '_>) -> Option<(De
Some((tcx.hir().local_def_id(hir_id).to_def_id(), EntryFnType::Start))
} else if let Some((hir_id, _)) = visitor.attr_main_fn {
Some((tcx.hir().local_def_id(hir_id).to_def_id(), EntryFnType::Main))
} else if let Some(def_id) = tcx.main_def.and_then(|main_def| main_def.opt_fn_def_id()) {
if tcx.main_def.unwrap().is_import && !tcx.features().imported_main {
let span = tcx.main_def.unwrap().span;
feature_err(
&tcx.sess.parse_sess,
sym::imported_main,
span,
"using an imported function as entry point `main` is experimental",
)
.emit();
}
Some((def_id, EntryFnType::Main))
} else {
if let Some(main_def) = tcx.resolutions(()).main_def {
if let Some(def_id) = main_def.opt_fn_def_id() {
if main_def.is_import && !tcx.features().imported_main {
let span = main_def.span;
feature_err(
&tcx.sess.parse_sess,
sym::imported_main,
span,
"using an imported function as entry point `main` is experimental",
)
.emit();
}
return Some((def_id, EntryFnType::Main));
}
}
no_main_err(tcx, visitor);
None
}
@ -209,7 +212,7 @@ fn no_main_err(tcx: TyCtxt<'_>, visitor: &EntryContext<'_, '_>) {
err.note(&note);
}
if let Some(main_def) = tcx.main_def {
if let Some(main_def) = tcx.resolutions(()).main_def {
if main_def.opt_fn_def_id().is_none() {
// There is something at `crate::main`, but it is not a function definition.
err.span_label(main_def.span, &format!("non-function item at `crate::main` is found"));