Refactor Element, Num, and Analog classes to their own files (no functional changes)

1 files changed, 62 insertions, 0 deletions

diff --git a/chiselFrontend/src/main/scala/chisel3/Element.scala b/chiselFrontend/src/main/scala/chisel3/Element.scala
new file mode 100644
index 00000000..fccae9ab
--- /dev/null
+++ b/chiselFrontend/src/main/scala/chisel3/Element.scala
@@ -0,0 +1,62 @@
+// See LICENSE for license details.
+
+package chisel3
+
+import chisel3.internal.Builder.pushCommand
+import chisel3.internal.firrtl._
+import chisel3.internal.sourceinfo.SourceInfo
+import chisel3.internal._
+
+/** Element is a leaf data type: it cannot contain other [[Data]] objects. Example uses are for representing primitive
+  * data types, like integers and bits.
+  *
+  * @define coll element
+  */
+abstract class Element extends Data {
+  private[chisel3] final def allElements: Seq[Element] = Seq(this)
+  def widthKnown: Boolean = width.known
+  def name: String = getRef.name
+
+  private[chisel3] override def bind(target: Binding, parentDirection: SpecifiedDirection) {
+    binding = target
+    val resolvedDirection = SpecifiedDirection.fromParent(parentDirection, specifiedDirection)
+    direction = ActualDirection.fromSpecified(resolvedDirection)
+  }
+
+  private[chisel3] override def topBindingOpt: Option[TopBinding] = super.topBindingOpt match {
+    // Translate Bundle lit bindings to Element lit bindings
+    case Some(BundleLitBinding(litMap)) => litMap.get(this) match {
+      case Some(litArg) => Some(ElementLitBinding(litArg))
+      case _ => Some(DontCareBinding())
+    }
+    case topBindingOpt => topBindingOpt
+  }
+
+  private[chisel3] def litArgOption: Option[LitArg] = topBindingOpt match {
+    case Some(ElementLitBinding(litArg)) => Some(litArg)
+    case _ => None
+  }
+
+  override def litOption: Option[BigInt] = litArgOption.map(_.num)
+  private[chisel3] def litIsForcedWidth: Option[Boolean] = litArgOption.map(_.forcedWidth)
+
+  // provide bits-specific literal handling functionality here
+  override private[chisel3] def ref: Arg = topBindingOpt match {
+    case Some(ElementLitBinding(litArg)) => litArg
+    case Some(BundleLitBinding(litMap)) => litMap.get(this) match {
+      case Some(litArg) => litArg
+      case _ => throwException(s"internal error: DontCare should be caught before getting ref")
+    }
+    case _ => super.ref
+  }
+
+  private[chisel3] def legacyConnect(that: Data)(implicit sourceInfo: SourceInfo): Unit = {
+    // If the source is a DontCare, generate a DefInvalid for the sink,
+    //  otherwise, issue a Connect.
+    if (that == DontCare) {
+      pushCommand(DefInvalid(sourceInfo, Node(this)))
+    } else {
+      pushCommand(Connect(sourceInfo, Node(this), that.ref))
+    }
+  }
+}