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keep leading double-colon to respect the 2018 edition of rust's paths

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Stéphane Campinas 2019-01-23 00:01:53 +01:00
parent 78d4fca2d7
commit a2bfc026e5
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GPG key ID: 6D5620D908210133
1 changed files with 11 additions and 4 deletions
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15
src/imports.rs
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@ -324,9 +324,8 @@ impl UseTree {
attrs,
};
let leading_modsep = context.config.edition() == Edition::Edition2018
&& a.prefix.to_string().len() > 2
&& a.prefix.to_string().starts_with("::");
let leading_modsep =
context.config.edition() == Edition::Edition2018 && a.prefix.is_global();
let mut modsep = leading_modsep;
@ -367,7 +366,15 @@ impl UseTree {
));
}
UseTreeKind::Simple(ref rename, ..) => {
let name = rewrite_ident(context, path_to_imported_ident(&a.prefix)).to_owned();
// If the path has leading double colons and is composed of only 2 segments, then we
// bypass the call to path_to_imported_ident which would get only the ident and
// lose the path root, e.g., `that` in `::that`.
// The span of `a.prefix` contains the leading colons.
let name = if a.prefix.segments.len() == 2 && leading_modsep {
context.snippet(a.prefix.span).to_owned()
} else {
rewrite_ident(context, path_to_imported_ident(&a.prefix)).to_owned()
};
let alias = rename.and_then(|ident| {
if ident.name == "_" {
// for impl-only-use