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| author | Jeffrey Seyfried <jeffrey.seyfried@gmail.com> | 2016-06-16 06:44:53 +0000 |
|---|---|---|
| committer | Jeffrey Seyfried <jeffrey.seyfried@gmail.com> | 2016-06-16 07:58:43 +0000 |
| commit | c41cf30e9d0a5ae47e944fd8ee27eda9ce815ee1 (patch) | |
| tree | 68c843f906df68211f11e624a5effc5fdb57cbf2 /src/libsyntax/util | |
| parent | 83d283b67bbc668e1ab262b3f199c046567e9954 (diff) | |
| download | rust-c41cf30e9d0a5ae47e944fd8ee27eda9ce815ee1.tar.gz rust-c41cf30e9d0a5ae47e944fd8ee27eda9ce815ee1.zip | |
Strip unconfigured nodes from decorator-generated AST
Diffstat (limited to 'src/libsyntax/util')
| -rw-r--r-- | src/libsyntax/util/small_vector.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/libsyntax/util/small_vector.rs b/src/libsyntax/util/small_vector.rs index 8b07b21c578..78395462fb5 100644 --- a/src/libsyntax/util/small_vector.rs +++ b/src/libsyntax/util/small_vector.rs @@ -136,6 +136,15 @@ impl<T> SmallVector<T> { } pub fn is_empty(&self) -> bool { self.len() == 0 } + + pub fn map<U, F: FnMut(T) -> U>(self, mut f: F) -> SmallVector<U> { + let repr = match self.repr { + Zero => Zero, + One(t) => One(f(t)), + Many(vec) => Many(vec.into_iter().map(f).collect()), + }; + SmallVector { repr: repr } + } } impl<T> IntoIterator for SmallVector<T> { |