bjoernager/rust
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Use more slice patterns inside the compiler

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This commit is contained in:
León Orell Valerian Liehr 2024-08-07 12:41:49 +02:00
parent 60d146580c
commit c4c518d2d4
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GPG key ID: D17A07215F68E713
40 changed files with 191 additions and 221 deletions
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14
compiler/rustc_mir_transform/src/validate.rs
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@ -898,8 +898,8 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
self.param_env,
adt_def.non_enum_variant().fields[field].ty(self.tcx, args),
);
if fields.len() == 1 {
let src_ty = fields.raw[0].ty(self.body, self.tcx);
if let [field] = fields.raw.as_slice() {
let src_ty = field.ty(self.body, self.tcx);
if !self.mir_assign_valid_types(src_ty, dest_ty) {
self.fail(location, "union field has the wrong type");
}
@ -967,11 +967,9 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
self.fail(location, "RawPtr should be in runtime MIR only");
}
if fields.len() != 2 {
self.fail(location, "raw pointer aggregate must have 2 fields");
} else {
let data_ptr_ty = fields.raw[0].ty(self.body, self.tcx);
let metadata_ty = fields.raw[1].ty(self.body, self.tcx);
if let [data_ptr, metadata] = fields.raw.as_slice() {
let data_ptr_ty = data_ptr.ty(self.body, self.tcx);
let metadata_ty = metadata.ty(self.body, self.tcx);
if let ty::RawPtr(in_pointee, in_mut) = data_ptr_ty.kind() {
if *in_mut != mutability {
self.fail(location, "input and output mutability must match");
@ -998,6 +996,8 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
self.fail(location, "metadata for pointer-to-thin must be unit");
}
}
} else {
self.fail(location, "raw pointer aggregate must have 2 fields");
}
}
},