1 files changed, 38 insertions, 0 deletions
diff --git a/chiselFrontend/src/main/scala/chisel3/Clock.scala b/chiselFrontend/src/main/scala/chisel3/Clock.scala
new file mode 100644
index 00000000..7e530cdf
--- /dev/null
+++ b/chiselFrontend/src/main/scala/chisel3/Clock.scala
@@ -0,0 +1,38 @@
+// See LICENSE for license details.
+
+package chisel3
+
+import chisel3.internal.Builder.{pushOp}
+import chisel3.internal.firrtl._
+import chisel3.internal.sourceinfo._
+import chisel3.internal.firrtl.PrimOp.AsUIntOp
+
+object Clock {
+  def apply(): Clock = new Clock
+}
+
+// TODO: Document this.
+sealed class Clock(private[chisel3] val width: Width = Width(1)) extends Element {
+  override def toString: String = s"Clock$bindingToString"
+
+  def cloneType: this.type = Clock().asInstanceOf[this.type]
+
+  private[chisel3] def typeEquivalent(that: Data): Boolean =
+    this.getClass == that.getClass
+
+  override def connect(that: Data)(implicit sourceInfo: SourceInfo, connectCompileOptions: CompileOptions): Unit = that match { // scalastyle:ignore line.size.limit
+    case _: Clock => super.connect(that)(sourceInfo, connectCompileOptions)
+    case _ => super.badConnect(that)(sourceInfo)
+  }
+
+  override def litOption: Option[BigInt] = None
+
+  /** Not really supported */
+  def toPrintable: Printable = PString("CLOCK")
+
+  override def do_asUInt(implicit sourceInfo: SourceInfo, connectCompileOptions: CompileOptions): UInt = pushOp(DefPrim(sourceInfo, UInt(this.width), AsUIntOp, ref)) // scalastyle:ignore line.size.limit
+  private[chisel3] override def connectFromBits(that: Bits)(implicit sourceInfo: SourceInfo,
+      compileOptions: CompileOptions): Unit = {
+    this := that
+  }
+}