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add offset_left(4) for 'dyn '

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kngwyu 2018-03-05 22:45:40 +09:00
parent f8f5d5c68c
commit 8ea79aa025
1 changed files with 5 additions and 2 deletions
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7
src/types.rs
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@ -617,9 +617,12 @@ impl Rewrite for ast::Ty {
fn rewrite(&self, context: &RewriteContext, shape: Shape) -> Option<String> {
match self.node {
ast::TyKind::TraitObject(ref bounds, tobj_syntax) => {
let res = bounds.rewrite(context, shape)?;
// we have to consider 'dyn' keyword is used or not!!!
if tobj_syntax == ast::TraitObjectSyntax::Dyn {
let is_dyn = tobj_syntax == ast::TraitObjectSyntax::Dyn;
// 4 is length of 'dyn '
let shape = if is_dyn { shape.offset_left(4)? } else { shape };
let res = bounds.rewrite(context, shape)?;
if is_dyn {
Some(format!("dyn {}", res))
} else {
Some(res)