X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_attr%2Fsrc%2Fbuiltin.rs;h=ab5e19050ead2ffbb0a0d475c69d985ec86fb588;hb=0818ba43a42ef455baf0b806e1bd21f41d64d27d;hp=13b48d8f89ab4a6eea6f60a986d88369be7235d4;hpb=785b47d92a0519e4bcc1a9dd2c0c28067e082ff1;p=rust.git diff --git a/compiler/rustc_attr/src/builtin.rs b/compiler/rustc_attr/src/builtin.rs index 13b48d8f89a..ab5e19050ea 100644 --- a/compiler/rustc_attr/src/builtin.rs +++ b/compiler/rustc_attr/src/builtin.rs @@ -277,8 +277,7 @@ fn find_stability_generic<'a, I>( allowed_through_unstable_modules = true; } // attributes with data - else if let Some(MetaItem { kind: MetaItemKind::List(ref metas), .. }) = meta { - let meta = meta.as_ref().unwrap(); + else if let Some(meta @ MetaItem { kind: MetaItemKind::List(metas), .. }) = &meta { let get = |meta: &MetaItem, item: &mut Option| { if item.is_some() { handle_errors( @@ -533,25 +532,24 @@ fn find_stability_generic<'a, I>( // Merge the const-unstable info into the stability info if promotable { - if let Some((ref mut stab, _)) = const_stab { - stab.promotable = promotable; - } else { - sess.emit_err(session_diagnostics::RustcPromotablePairing { span: item_sp }); + match &mut const_stab { + Some((stab, _)) => stab.promotable = promotable, + _ => _ = sess.emit_err(session_diagnostics::RustcPromotablePairing { span: item_sp }), } } if allowed_through_unstable_modules { - if let Some(( - Stability { - level: StabilityLevel::Stable { ref mut allowed_through_unstable_modules, .. }, - .. - }, - _, - )) = stab - { - *allowed_through_unstable_modules = true; - } else { - sess.emit_err(session_diagnostics::RustcAllowedUnstablePairing { span: item_sp }); + match &mut stab { + Some(( + Stability { + level: StabilityLevel::Stable { allowed_through_unstable_modules, .. }, + .. + }, + _, + )) => *allowed_through_unstable_modules = true, + _ => { + sess.emit_err(session_diagnostics::RustcAllowedUnstablePairing { span: item_sp }); + } } } @@ -654,8 +652,8 @@ pub fn eval_condition( features: Option<&Features>, eval: &mut impl FnMut(Condition) -> bool, ) -> bool { - match cfg.kind { - ast::MetaItemKind::List(ref mis) if cfg.name_or_empty() == sym::version => { + match &cfg.kind { + ast::MetaItemKind::List(mis) if cfg.name_or_empty() == sym::version => { try_gate_cfg(sym::version, cfg.span, sess, features); let (min_version, span) = match &mis[..] { [NestedMetaItem::Lit(MetaItemLit { kind: LitKind::Str(sym, ..), span, .. })] => { @@ -688,7 +686,7 @@ pub fn eval_condition( rustc_version >= min_version } } - ast::MetaItemKind::List(ref mis) => { + ast::MetaItemKind::List(mis) => { for mi in mis.iter() { if !mi.is_meta_item() { handle_errors( @@ -759,7 +757,7 @@ pub fn eval_condition( sess.emit_err(session_diagnostics::CfgPredicateIdentifier { span: cfg.path.span }); true } - MetaItemKind::NameValue(ref lit) if !lit.kind.is_str() => { + MetaItemKind::NameValue(lit) if !lit.kind.is_str() => { handle_errors( sess, lit.span, @@ -1036,52 +1034,58 @@ pub fn parse_repr_attr(sess: &Session, attr: &Attribute) -> Vec { }); } } else if let Some(meta_item) = item.meta_item() { - if let MetaItemKind::NameValue(ref value) = meta_item.kind { - if meta_item.has_name(sym::align) || meta_item.has_name(sym::packed) { - let name = meta_item.name_or_empty().to_ident_string(); - recognised = true; - sess.emit_err(session_diagnostics::IncorrectReprFormatGeneric { - span: item.span(), - repr_arg: &name, - cause: IncorrectReprFormatGenericCause::from_lit_kind( - item.span(), - &value.kind, - &name, - ), - }); - } else if matches!( - meta_item.name_or_empty(), - sym::C | sym::simd | sym::transparent - ) || int_type_of_word(meta_item.name_or_empty()).is_some() - { - recognised = true; - sess.emit_err(session_diagnostics::InvalidReprHintNoValue { - span: meta_item.span, - name: meta_item.name_or_empty().to_ident_string(), - }); + match &meta_item.kind { + MetaItemKind::NameValue(value) => { + if meta_item.has_name(sym::align) || meta_item.has_name(sym::packed) { + let name = meta_item.name_or_empty().to_ident_string(); + recognised = true; + sess.emit_err(session_diagnostics::IncorrectReprFormatGeneric { + span: item.span(), + repr_arg: &name, + cause: IncorrectReprFormatGenericCause::from_lit_kind( + item.span(), + &value.kind, + &name, + ), + }); + } else if matches!( + meta_item.name_or_empty(), + sym::C | sym::simd | sym::transparent + ) || int_type_of_word(meta_item.name_or_empty()).is_some() + { + recognised = true; + sess.emit_err(session_diagnostics::InvalidReprHintNoValue { + span: meta_item.span, + name: meta_item.name_or_empty().to_ident_string(), + }); + } } - } else if let MetaItemKind::List(_) = meta_item.kind { - if meta_item.has_name(sym::align) { - recognised = true; - sess.emit_err(session_diagnostics::IncorrectReprFormatAlignOneArg { - span: meta_item.span, - }); - } else if meta_item.has_name(sym::packed) { - recognised = true; - sess.emit_err(session_diagnostics::IncorrectReprFormatPackedOneOrZeroArg { - span: meta_item.span, - }); - } else if matches!( - meta_item.name_or_empty(), - sym::C | sym::simd | sym::transparent - ) || int_type_of_word(meta_item.name_or_empty()).is_some() - { - recognised = true; - sess.emit_err(session_diagnostics::InvalidReprHintNoParen { - span: meta_item.span, - name: meta_item.name_or_empty().to_ident_string(), - }); + MetaItemKind::List(_) => { + if meta_item.has_name(sym::align) { + recognised = true; + sess.emit_err(session_diagnostics::IncorrectReprFormatAlignOneArg { + span: meta_item.span, + }); + } else if meta_item.has_name(sym::packed) { + recognised = true; + sess.emit_err( + session_diagnostics::IncorrectReprFormatPackedOneOrZeroArg { + span: meta_item.span, + }, + ); + } else if matches!( + meta_item.name_or_empty(), + sym::C | sym::simd | sym::transparent + ) || int_type_of_word(meta_item.name_or_empty()).is_some() + { + recognised = true; + sess.emit_err(session_diagnostics::InvalidReprHintNoParen { + span: meta_item.span, + name: meta_item.name_or_empty().to_ident_string(), + }); + } } + _ => (), } } if !recognised {