Class that can be used for memoizing types in r...

Class that can be used for memoizing types in reified trees

1 files changed, 15 insertions, 0 deletions

diff --git a/src/compiler/scala/reflect/runtime/Memoizer.scala b/src/compiler/scala/reflect/runtime/Memoizer.scala
new file mode 100644
index 0000000000..4c1b82ae6d
--- /dev/null
+++ b/src/compiler/scala/reflect/runtime/Memoizer.scala
@@ -0,0 +1,15 @@
+package scala.reflect.runtime
+
+import collection.mutable.ArrayBuffer
+import Mirror.Type
+
+/** Class that can be used for memoizing types in reified trees */
+class Memoizer {
+  private val mem = new ArrayBuffer[Mirror.Type]
+  def get(n: Int): Type = mem(n)
+  def add(n: Int, tpe: Type): Type = {
+    while (mem.length <= n) mem += null
+    mem(n) = tpe
+    tpe
+  }
+}