proc-macro-api: Add more tests #21404
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Veykril
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Jan 4, 2026
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| pub fn empty(span: DelimSpan) -> Self { | ||
| Self { | ||
| repr: TopSubtreeRepr::SpanStorage96(Box::new([TokenTree::Subtree { | ||
| len: 0, | ||
| delim_kind: DelimiterKind::Invisible, | ||
| open_span: SpanStorage96::new(span.open.range, 0), | ||
| close_span: SpanStorage96::new(span.close.range, 1), | ||
| }])), | ||
| span_parts: Box::new([ | ||
| CompressedSpanPart::from_span(&span.open), | ||
| CompressedSpanPart::from_span(&span.close), | ||
| ]), | ||
| } | ||
| TopSubtreeBuilder::new(crate::Delimiter { | ||
| kind: DelimiterKind::Invisible, | ||
| open: span.open, | ||
| close: span.close, | ||
| }) | ||
| .build() |
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Notable change, given that the eq impl of TopSubtree relies on the backing span store, we should make sure that building an empty tree results in the same object no matter what constructor is being used, thus this change
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All of these were AI generated and then hand-picked/cleaned up by me