Settings code into common.settings, no review.

1 files changed, 41 insertions, 0 deletions

diff --git a/src/compiler/scala/reflect/common/settings/MutableSettings.scala b/src/compiler/scala/reflect/common/settings/MutableSettings.scala
new file mode 100644
index 0000000000..dfde14bb37
--- /dev/null
+++ b/src/compiler/scala/reflect/common/settings/MutableSettings.scala
@@ -0,0 +1,41 @@
+/* NSC -- new Scala compiler
+ * Copyright 2005-2011 LAMP/EPFL
+ * @author  Martin Odersky
+ */
+// $Id$
+
+package scala.reflect.common
+package settings
+
+/** A mutable Settings object.
+ */
+abstract class MutableSettings extends AbsSettings {
+
+  type Setting <: SettingValue
+
+  // basically this is a value which remembers if it's been modified
+  trait SettingValue extends AbsSettingValue {
+    protected var v: T
+    protected var setByUser: Boolean = false
+    def postSetHook(): Unit
+
+    def isDefault: Boolean = !setByUser
+    def value: T = v
+    def value_=(arg: T) = {
+      setByUser = true
+      v = arg
+      postSetHook()
+    }
+  }
+
+  def debug: SettingValue { type T = Boolean }
+  def YdepMethTpes: SettingValue { type T = Boolean }
+  def Ynotnull: SettingValue { type T = Boolean }
+  def explaintypes: SettingValue { type T = Boolean }
+  def verbose: SettingValue { type T = Boolean }
+  def uniqid: SettingValue { type T = Boolean }
+  def Xprintpos: SettingValue { type T = Boolean }
+  def printtypes: SettingValue { type T = Boolean }
+  def Yrecursion: SettingValue { type T = Int }
+  def maxClassfileName: SettingValue { type T = Int }
+}
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