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-rw-r--r--src/main/scala/Chisel/Reg.scala66
1 files changed, 0 insertions, 66 deletions
diff --git a/src/main/scala/Chisel/Reg.scala b/src/main/scala/Chisel/Reg.scala
deleted file mode 100644
index e69061c5..00000000
--- a/src/main/scala/Chisel/Reg.scala
+++ /dev/null
@@ -1,66 +0,0 @@
-// See LICENSE for license details.
-
-package Chisel
-
-import internal._
-import internal.Builder.pushCommand
-import internal.firrtl._
-
-object Reg {
- private[Chisel] def makeType[T <: Data](t: T = null, next: T = null, init: T = null): T = {
- if (t ne null) {
- t.cloneType
- } else if (next ne null) {
- next.cloneTypeWidth(Width())
- } else if (init ne null) {
- init.litArg match {
- // For e.g. Reg(init=UInt(0, k)), fix the Reg's width to k
- case Some(lit) if lit.forcedWidth => init.cloneType
- case _ => init.cloneTypeWidth(Width())
- }
- } else {
- throwException("cannot infer type")
- }
- }
-
- /** Creates a register with optional next and initialization values.
- *
- * @param t: data type for the register
- * @param next: new value register is to be updated with every cycle (or
- * empty to not update unless assigned to using the := operator)
- * @param init: initialization value on reset (or empty for uninitialized,
- * where the register value persists across a reset)
- *
- * @note this may result in a type error if called from a type parameterized
- * function, since the Scala compiler isn't smart enough to know that null
- * is a valid value. In those cases, you can either use the outType only Reg
- * constructor or pass in `null.asInstanceOf[T]`.
- */
- def apply[T <: Data](t: T = null, next: T = null, init: T = null): T = {
- // TODO: write this in a way that doesn't need nulls (bad Scala style),
- // null.asInstanceOf[T], and two constructors. Using Option types are an
- // option, but introduces cumbersome syntax (wrap everything in a Some()).
- // Implicit conversions to Option (or similar) types were also considered,
- // but Scala's type inferencer and implicit insertion isn't smart enough
- // to resolve all use cases. If the type inferencer / implicit resolution
- // system improves, this may be changed.
- val x = makeType(t, next, init)
- val clock = Node(x._parent.get.clock) // TODO multi-clock
- if (init == null) {
- pushCommand(DefReg(x, clock))
- } else {
- pushCommand(DefRegInit(x, clock, Node(x._parent.get.reset), init.ref))
- }
- if (next != null) {
- x := next
- }
- x
- }
-
- /** Creates a register without initialization (reset is ignored). Value does
- * not change unless assigned to (using the := operator).
- *
- * @param outType: data type for the register
- */
- def apply[T <: Data](outType: T): T = Reg[T](outType, null.asInstanceOf[T], null.asInstanceOf[T])
-}