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| author | Paul Phillips <paulp@improving.org> | 2012-11-30 11:05:30 +0100 |
|---|---|---|
| committer | Paul Phillips <paulp@improving.org> | 2012-12-27 15:47:33 -0800 |
| commit | eb491d2f1a857a25e381eb23275b78ccafd2981a (patch) | |
| tree | 8f7c552cbde244d0f9a8626134a133853e1797fd /src/reflect/scala/reflect/api/Trees.scala | |
| parent | 57c40c54d6119c42e256d6f7c4c7681a5257b266 (diff) | |
| download | scala-eb491d2f1a857a25e381eb23275b78ccafd2981a.tar.gz scala-eb491d2f1a857a25e381eb23275b78ccafd2981a.tar.bz2 scala-eb491d2f1a857a25e381eb23275b78ccafd2981a.zip | |
Eliminate allocations in Trees and Symbols.
Diffstat (limited to 'src/reflect/scala/reflect/api/Trees.scala')
| -rw-r--r-- | src/reflect/scala/reflect/api/Trees.scala | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/reflect/scala/reflect/api/Trees.scala b/src/reflect/scala/reflect/api/Trees.scala index 05458cb311..0b44d6a237 100644 --- a/src/reflect/scala/reflect/api/Trees.scala +++ b/src/reflect/scala/reflect/api/Trees.scala @@ -2921,7 +2921,8 @@ trait Trees { self: Universe => def transform(tree: Tree): Tree = itransform(this, tree) /** Transforms a list of trees. */ - def transformTrees(trees: List[Tree]): List[Tree] = trees mapConserve transform + def transformTrees(trees: List[Tree]): List[Tree] = + if (trees.isEmpty) Nil else trees mapConserve transform /** Transforms a `Template`. */ def transformTemplate(tree: Template): Template = |