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| author | León Orell Valerian Liehr <me@fmease.dev> | 2024-08-07 12:41:49 +0200 |
|---|---|---|
| committer | León Orell Valerian Liehr <me@fmease.dev> | 2024-08-07 13:37:52 +0200 |
| commit | c4c518d2d496774ecc7a368e826480d1928ed1ab (patch) | |
| tree | 71e199c5e79d70938c20c1f8fa3b3a892cc99245 /compiler/rustc_attr/src/builtin.rs | |
| parent | 60d146580c10036ce89e019422c6bc2fd9729b65 (diff) | |
| download | rust-c4c518d2d496774ecc7a368e826480d1928ed1ab.tar.gz rust-c4c518d2d496774ecc7a368e826480d1928ed1ab.zip | |
Use more slice patterns inside the compiler
Diffstat (limited to 'compiler/rustc_attr/src/builtin.rs')
| -rw-r--r-- | compiler/rustc_attr/src/builtin.rs | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/compiler/rustc_attr/src/builtin.rs b/compiler/rustc_attr/src/builtin.rs index 12a19ae5c3d..cf86a6942da 100644 --- a/compiler/rustc_attr/src/builtin.rs +++ b/compiler/rustc_attr/src/builtin.rs @@ -665,12 +665,12 @@ pub fn eval_condition( res & eval_condition(mi.meta_item().unwrap(), sess, features, eval) }), sym::not => { - if mis.len() != 1 { + let [mi] = mis.as_slice() else { dcx.emit_err(session_diagnostics::ExpectedOneCfgPattern { span: cfg.span }); return false; - } + }; - !eval_condition(mis[0].meta_item().unwrap(), sess, features, eval) + !eval_condition(mi.meta_item().unwrap(), sess, features, eval) } sym::target => { if let Some(features) = features @@ -1051,10 +1051,10 @@ pub fn parse_repr_attr(sess: &Session, attr: &Attribute) -> Vec<ReprAttr> { MetaItemKind::List(nested_items) => { if meta_item.has_name(sym::align) { recognised = true; - if nested_items.len() == 1 { + if let [nested_item] = nested_items.as_slice() { sess.dcx().emit_err( session_diagnostics::IncorrectReprFormatExpectInteger { - span: nested_items[0].span(), + span: nested_item.span(), }, ); } else { @@ -1066,10 +1066,10 @@ pub fn parse_repr_attr(sess: &Session, attr: &Attribute) -> Vec<ReprAttr> { } } else if meta_item.has_name(sym::packed) { recognised = true; - if nested_items.len() == 1 { + if let [nested_item] = nested_items.as_slice() { sess.dcx().emit_err( session_diagnostics::IncorrectReprFormatPackedExpectInteger { - span: nested_items[0].span(), + span: nested_item.span(), }, ); } else { |