diff options
author | Dmitry Petrashko <dark@d-d.me> | 2017-03-15 10:04:20 +0100 |
---|---|---|
committer | GitHub <noreply@github.com> | 2017-03-15 10:04:20 +0100 |
commit | 141fb4b8c63e5b9cbbb1b92f55412e676a38cbf0 (patch) | |
tree | cab94bb63bad887672534d4d3f078506a0a9ce59 /compiler/src/dotty/tools/dotc/transform/SymUtils.scala | |
parent | 934da77590dad2003fe850b48b2ae01b427508f0 (diff) | |
parent | be5720c18ca6768c7e72d4258677952848db2bb4 (diff) | |
download | dotty-141fb4b8c63e5b9cbbb1b92f55412e676a38cbf0.tar.gz dotty-141fb4b8c63e5b9cbbb1b92f55412e676a38cbf0.tar.bz2 dotty-141fb4b8c63e5b9cbbb1b92f55412e676a38cbf0.zip |
Merge pull request #2043 from dotty-staging/tailrec-derivesFrom
Tailrec for derivesFrom/lookupRefined/classSymbol/classSymbols
Diffstat (limited to 'compiler/src/dotty/tools/dotc/transform/SymUtils.scala')
-rw-r--r-- | compiler/src/dotty/tools/dotc/transform/SymUtils.scala | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/compiler/src/dotty/tools/dotc/transform/SymUtils.scala b/compiler/src/dotty/tools/dotc/transform/SymUtils.scala index 05305575e..105f54d3a 100644 --- a/compiler/src/dotty/tools/dotc/transform/SymUtils.scala +++ b/compiler/src/dotty/tools/dotc/transform/SymUtils.scala @@ -12,7 +12,9 @@ import StdNames._ import NameOps._ import Flags._ import Annotations._ + import language.implicitConversions +import scala.annotation.tailrec object SymUtils { implicit def decorateSymbol(sym: Symbol): SymUtils = new SymUtils(sym) @@ -59,14 +61,14 @@ class SymUtils(val self: Symbol) extends AnyVal { } /** The closest enclosing method or class of this symbol */ - final def enclosingMethodOrClass(implicit ctx: Context): Symbol = + @tailrec final def enclosingMethodOrClass(implicit ctx: Context): Symbol = if (self.is(Method, butNot = Label) || self.isClass) self else if (self.exists) self.owner.enclosingMethodOrClass else NoSymbol /** Apply symbol/symbol substitution to this symbol */ def subst(from: List[Symbol], to: List[Symbol]): Symbol = { - def loop(from: List[Symbol], to: List[Symbol]): Symbol = + @tailrec def loop(from: List[Symbol], to: List[Symbol]): Symbol = if (from.isEmpty) self else if (self eq from.head) to.head else loop(from.tail, to.tail) |