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This commit is contained in:
Aleksey Kladov 2019-02-21 15:24:42 +03:00
parent 2fa2805887
commit 412ac63ff5
11 changed files with 143 additions and 98 deletions
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crates/ra_syntax/src/algo.rs
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@ -33,6 +33,7 @@ pub fn find_covering_node(root: &SyntaxNode, range: TextRange) -> &SyntaxNode {
SyntaxNode::from_repr(root.0.covering_node(range))
}
// Replace with `std::iter::successors` in `1.34.0`
pub fn generate<T>(seed: Option<T>, step: impl Fn(&T) -> Option<T>) -> impl Iterator<Item = T> {
::itertools::unfold(seed, move |slot| {
slot.take().map(|curr| {