diff options
| author | Jim Lawson | 2016-06-20 11:08:46 -0700 |
|---|---|---|
| committer | Jim Lawson | 2016-06-20 11:08:46 -0700 |
| commit | d408d73a171535bd7c2ba9d0037c194022b8a62f (patch) | |
| tree | 81885a99ec56e89532bc3fa338f22b163dcc4d1f /src/main/scala/chisel/util/Conditional.scala | |
| parent | b5a534914795d9d17f4dfe623525f1b804e4c60f (diff) | |
Rename chisel3 package.
Diffstat (limited to 'src/main/scala/chisel/util/Conditional.scala')
| -rw-r--r-- | src/main/scala/chisel/util/Conditional.scala | 73 |
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 }""" - } -} |
