1 files changed, 26 insertions, 0 deletions
diff --git a/compiler/src/dotty/tools/dotc/classpath/PackageNameUtils.scala b/compiler/src/dotty/tools/dotc/classpath/PackageNameUtils.scala
new file mode 100644
index 000000000..303f142b9
--- /dev/null
+++ b/compiler/src/dotty/tools/dotc/classpath/PackageNameUtils.scala
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2014 Contributor. All rights reserved.
+ */
+package dotty.tools.dotc.classpath
+
+import dotty.tools.io.ClassPath.RootPackage
+
+/**
+ * Common methods related to package names represented as String
+ */
+object PackageNameUtils {
+
+  /**
+   * @param fullClassName full class name with package
+   * @return (package, simple class name)
+   */
+  def separatePkgAndClassNames(fullClassName: String): (String, String) = {
+    val lastDotIndex = fullClassName.lastIndexOf('.')
+    if (lastDotIndex == -1)
+      (RootPackage, fullClassName)
+    else
+      (fullClassName.substring(0, lastDotIndex), fullClassName.substring(lastDotIndex + 1))
+  }
+
+  def packagePrefix(inPackage: String): String = if (inPackage == RootPackage) "" else inPackage + "."
+}