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author | Felix Mulder <felix.mulder@gmail.com> | 2016-11-02 11:08:28 +0100 |
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committer | Guillaume Martres <smarter@ubuntu.com> | 2016-11-22 01:35:07 +0100 |
commit | 8a61ff432543a29234193cd1f7c14abd3f3d31a0 (patch) | |
tree | a8147561d307af862c295cfc8100d271063bb0dd /compiler/src/dotty/tools/dotc/util/FreshNameCreator.scala | |
parent | 6a455fe6da5ff9c741d91279a2dc6fe2fb1b472f (diff) | |
download | dotty-8a61ff432543a29234193cd1f7c14abd3f3d31a0.tar.gz dotty-8a61ff432543a29234193cd1f7c14abd3f3d31a0.tar.bz2 dotty-8a61ff432543a29234193cd1f7c14abd3f3d31a0.zip |
Move compiler and compiler tests to compiler dir
Diffstat (limited to 'compiler/src/dotty/tools/dotc/util/FreshNameCreator.scala')
-rw-r--r-- | compiler/src/dotty/tools/dotc/util/FreshNameCreator.scala | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/compiler/src/dotty/tools/dotc/util/FreshNameCreator.scala b/compiler/src/dotty/tools/dotc/util/FreshNameCreator.scala new file mode 100644 index 000000000..521947895 --- /dev/null +++ b/compiler/src/dotty/tools/dotc/util/FreshNameCreator.scala @@ -0,0 +1,33 @@ +package dotty.tools +package dotc +package util + +import scala.collection.mutable + +trait FreshNameCreator { + def newName(prefix: String = ""): String + + @deprecated("use newName(prefix)", "2.9.0") + def newName(pos: scala.reflect.internal.util.Position, prefix: String): String = newName(prefix) + @deprecated("use newName()", "2.9.0") + def newName(pos: scala.reflect.internal.util.Position): String = newName() +} + +object FreshNameCreator { + class Default extends FreshNameCreator { + protected var counter = 0 + protected val counters = mutable.AnyRefMap[String, Int]() withDefaultValue 0 + + /** + * Create a fresh name with the given prefix. It is guaranteed + * that the returned name has never been returned by a previous + * call to this function (provided the prefix does not end in a digit). + */ + def newName(prefix: String): String = { + val safePrefix = prefix.replaceAll("""[<>]""", """\$""") + counters(safePrefix) += 1 + val counter = counters(safePrefix) + if (prefix.isEmpty) "$" + counter + "$" else safePrefix + counter + } + } +} |