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More orthogonal path editing

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This commit is contained in:
Aleksey Kladov 2020-01-15 18:48:28 +01:00
parent 7d2d3ac3db
commit ef1326ee19
3 changed files with 54 additions and 19 deletions
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42
crates/ra_syntax/src/ast/edit.rs
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@ -207,6 +207,48 @@ impl ast::TypeParam {
}
}
impl ast::Path {
#[must_use]
pub fn with_segment(&self, segment: ast::PathSegment) -> ast::Path {
if let Some(old) = self.segment() {
return replace_children(
self,
single_node(old.syntax().clone()),
iter::once(segment.syntax().clone().into()),
);
}
self.clone()
}
}
impl ast::PathSegment {
#[must_use]
pub fn with_type_args(&self, type_args: ast::TypeArgList) -> ast::PathSegment {
self._with_type_args(type_args, false)
}
#[must_use]
pub fn with_turbo_fish(&self, type_args: ast::TypeArgList) -> ast::PathSegment {
self._with_type_args(type_args, true)
}
fn _with_type_args(&self, type_args: ast::TypeArgList, turbo: bool) -> ast::PathSegment {
if let Some(old) = self.type_arg_list() {
return replace_children(
self,
single_node(old.syntax().clone()),
iter::once(type_args.syntax().clone().into()),
);
}
let mut to_insert: ArrayVec<[SyntaxElement; 2]> = ArrayVec::new();
if turbo {
to_insert.push(make::token(T![::]).into());
}
to_insert.push(type_args.syntax().clone().into());
insert_children(self, InsertPosition::Last, to_insert)
}
}
#[must_use]
pub fn strip_attrs_and_docs<N: ast::AttrsOwner>(node: &N) -> N {
N::cast(strip_attrs_and_docs_inner(node.syntax().clone())).unwrap()