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authorJim Lawson2016-06-20 11:08:46 -0700
committerJim Lawson2016-06-20 11:08:46 -0700
commitd408d73a171535bd7c2ba9d0037c194022b8a62f (patch)
tree81885a99ec56e89532bc3fa338f22b163dcc4d1f /src/main/scala/chisel/util/Conditional.scala
parentb5a534914795d9d17f4dfe623525f1b804e4c60f (diff)
Rename chisel3 package.
Diffstat (limited to 'src/main/scala/chisel/util/Conditional.scala')
-rw-r--r--src/main/scala/chisel/util/Conditional.scala73
1 files changed, 0 insertions, 73 deletions
diff --git a/src/main/scala/chisel/util/Conditional.scala b/src/main/scala/chisel/util/Conditional.scala
deleted file mode 100644
index 01c12799..00000000
--- a/src/main/scala/chisel/util/Conditional.scala
+++ /dev/null
@@ -1,73 +0,0 @@
-// See LICENSE for license details.
-
-/** Conditional blocks.
- */
-
-package chisel.util
-
-import scala.language.reflectiveCalls
-import scala.language.experimental.macros
-import scala.reflect.runtime.universe._
-import scala.reflect.macros.blackbox._
-
-import chisel._
-
-/** This is identical to [[Chisel.when when]] with the condition inverted */
-object unless { // scalastyle:ignore object.name
- def apply(c: Bool)(block: => Unit) {
- when (!c) { block }
- }
-}
-
-class SwitchContext[T <: Bits](cond: T) {
- def is(v: Iterable[T])(block: => Unit) {
- if (!v.isEmpty) when (v.map(_.asUInt === cond.asUInt).reduce(_||_)) { block }
- }
- def is(v: T)(block: => Unit) { is(Seq(v))(block) }
- def is(v: T, vr: T*)(block: => Unit) { is(v :: vr.toList)(block) }
-}
-
-/** An object for separate cases in [[Chisel.switch switch]]
- * It is equivalent to a [[Chisel.when$ when]] block comparing to the condition
- * Use outside of a switch statement is illegal */
-object is { // scalastyle:ignore object.name
- // Begin deprecation of non-type-parameterized is statements.
- def apply(v: Iterable[Bits])(block: => Unit) {
- require(false, "The 'is' keyword may not be used outside of a switch.")
- }
-
- def apply(v: Bits)(block: => Unit) {
- require(false, "The 'is' keyword may not be used outside of a switch.")
- }
-
- def apply(v: Bits, vr: Bits*)(block: => Unit) {
- require(false, "The 'is' keyword may not be used outside of a switch.")
- }
-}
-
-/** Conditional logic to form a switch block
- * @example
- * {{{ ... // default values here
- * switch ( myState ) {
- * is( state1 ) {
- * ... // some logic here
- * }
- * is( state2 ) {
- * ... // some logic here
- * }
- * } }}}*/
-object switch { // scalastyle:ignore object.name
- def apply[T <: Bits](cond: T)(x: => Unit): Unit = macro impl
- def impl(c: Context)(cond: c.Tree)(x: c.Tree): c.Tree = { import c.universe._
- val sc = c.universe.internal.reificationSupport.freshTermName("sc")
- def extractIsStatement(tree: Tree): List[c.universe.Tree] = tree match {
- // TODO: remove when Chisel compatibility package is removed
- case q"Chisel.`package`.is.apply( ..$params )( ..$body )" => List(q"$sc.is( ..$params )( ..$body )")
- case q"chisel.util.is.apply( ..$params )( ..$body )" => List(q"$sc.is( ..$params )( ..$body )")
- case b => throw new Exception(s"Cannot include blocks that do not begin with is() in switch.")
- }
- val q"..$body" = x
- val ises = body.flatMap(extractIsStatement(_))
- q"""{ val $sc = new SwitchContext($cond); ..$ises }"""
- }
-}