Modify the rule for reordering impl items
1. If two items have the same kind, then reorder them based on its ident. 2. Handle existential type.
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1 changed files with 11 additions and 3 deletions
14
src/items.rs
14
src/items.rs
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@ -591,23 +591,31 @@ impl<'a> FmtVisitor<'a> {
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buffer.push((self.buffer.clone(), item.clone()));
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self.buffer.clear();
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}
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// type -> const -> macro -> method
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// type -> existential -> const -> macro -> method
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use ast::ImplItemKind::*;
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fn need_empty_line(a: &ast::ImplItemKind, b: &ast::ImplItemKind) -> bool {
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match (a, b) {
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(Type(..), Type(..)) | (Const(..), Const(..)) => false,
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(Type(..), Type(..))
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| (Const(..), Const(..))
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| (Existential(..), Existential(..)) => false,
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_ => true,
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}
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}
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buffer.sort_by(|(_, a), (_, b)| match (&a.node, &b.node) {
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(Type(..), Type(..))
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| (Const(..), Const(..))
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| (Macro(..), Macro(..))
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| (Existential(..), Existential(..)) => a.ident.as_str().cmp(&b.ident.as_str()),
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(Method(..), Method(..)) => a.span.lo().cmp(&b.span.lo()),
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(Type(..), _) => Ordering::Less,
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(_, Type(..)) => Ordering::Greater,
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(Existential(..), _) => Ordering::Less,
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(_, Existential(..)) => Ordering::Greater,
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(Const(..), _) => Ordering::Less,
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(_, Const(..)) => Ordering::Greater,
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(Macro(..), _) => Ordering::Less,
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(_, Macro(..)) => Ordering::Greater,
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_ => a.span.lo().cmp(&b.span.lo()),
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});
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let mut prev_kind = None;
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for (buf, item) in buffer {
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