refactor: use by-ref TokenTree iterator to avoid a few clones
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3 changed files with 6 additions and 6 deletions
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@ -8,7 +8,7 @@ pub fn expand_trace_macros(
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sp: Span,
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tt: TokenStream,
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) -> Box<dyn base::MacResult + 'static> {
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let mut cursor = tt.into_trees();
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let mut cursor = tt.trees();
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let mut err = false;
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let value = match &cursor.next() {
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Some(TokenTree::Token(token, _)) if token.is_keyword(kw::True) => true,
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