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ty::layout: implement layout_of automatically as a default method.

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This commit is contained in:
Eduard-Mihai Burtescu 2021-08-30 18:01:58 +03:00
parent b710c0d48c
commit 6a9c9b0f18
1 changed files with 11 additions and 11 deletions
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22
src/common.rs
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@ -1,4 +1,5 @@
use rustc_index::vec::IndexVec;
use rustc_middle::ty::layout::LayoutError;
use rustc_middle::ty::SymbolName;
use rustc_target::abi::call::FnAbi;
use rustc_target::abi::{Integer, Primitive};
@ -259,8 +260,9 @@ pub(crate) struct FunctionCx<'m, 'clif, 'tcx: 'm> {
impl<'tcx> LayoutOf<'tcx> for FunctionCx<'_, '_, 'tcx> {
type LayoutOfResult = TyAndLayout<'tcx>;
fn layout_of(&self, ty: Ty<'tcx>) -> TyAndLayout<'tcx> {
RevealAllLayoutCx(self.tcx).layout_of(ty)
#[inline]
fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
RevealAllLayoutCx(self.tcx).handle_layout_err(err, span, ty)
}
}
@ -366,15 +368,13 @@ pub(crate) struct RevealAllLayoutCx<'tcx>(pub(crate) TyCtxt<'tcx>);
impl<'tcx> LayoutOf<'tcx> for RevealAllLayoutCx<'tcx> {
type LayoutOfResult = TyAndLayout<'tcx>;
fn layout_of(&self, ty: Ty<'tcx>) -> TyAndLayout<'tcx> {
assert!(!ty.still_further_specializable());
self.0.layout_of(ParamEnv::reveal_all().and(&ty)).unwrap_or_else(|e| {
if let layout::LayoutError::SizeOverflow(_) = e {
self.0.sess.fatal(&e.to_string())
} else {
bug!("failed to get layout for `{}`: {}", ty, e)
}
})
#[inline]
fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
if let layout::LayoutError::SizeOverflow(_) = err {
self.0.sess.span_fatal(span, &err.to_string())
} else {
span_bug!(span, "failed to get layout for `{}`: {}", ty, err)
}
}
}