diff options
| author | Jack Koenig | 2020-06-22 12:32:36 -0700 |
|---|---|---|
| committer | GitHub | 2020-06-22 19:32:36 +0000 |
| commit | 28e1a244bcc75a1138d25f5aa43ef22e23ef3ed7 (patch) | |
| tree | 66f5512ccfa0c18c0f3d89efabb37c2c273da34e /src/main | |
| parent | 1692b8a1c25fab175d4dff200ed3b15b22260edf (diff) | |
Canonicalize construction of Decoupled with no payload (#785)
* Canonicalize construction of empty Decoupled
* Change signature after dev meeting discussion
* Make EmptyBundle private and final
* Add test case for Decoupled with no payload
* Apply suggestions from code review
Co-authored-by: Richard Lin <richard.lin@berkeley.edu>
Co-authored-by: Albert Magyar <albert.magyar@gmail.com>
Co-authored-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
Co-authored-by: Adam Izraelevitz <azidar@gmail.com>
Co-authored-by: Richard Lin <richard.lin@berkeley.edu>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
Diffstat (limited to 'src/main')
| -rw-r--r-- | src/main/scala/chisel3/util/Decoupled.scala | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/main/scala/chisel3/util/Decoupled.scala b/src/main/scala/chisel3/util/Decoupled.scala index 6a3aad24..82511ee5 100644 --- a/src/main/scala/chisel3/util/Decoupled.scala +++ b/src/main/scala/chisel3/util/Decoupled.scala @@ -92,6 +92,15 @@ object Decoupled /** Wraps some Data with a DecoupledIO interface. */ def apply[T <: Data](gen: T): DecoupledIO[T] = new DecoupledIO(gen) + // TODO: use a proper empty data type, this is a quick and dirty solution + private final class EmptyBundle extends Bundle + + // Both of these methods return DecoupledIO parameterized by the most generic type: Data + /** Returns a [[DecoupledIO]] inteface with no payload */ + def apply(): DecoupledIO[Data] = apply(new EmptyBundle) + /** Returns a [[DecoupledIO]] inteface with no payload */ + def empty: DecoupledIO[Data] = Decoupled() + /** Downconverts an IrrevocableIO output to a DecoupledIO, dropping guarantees of irrevocability. * * @note unsafe (and will error) on the producer (input) side of an IrrevocableIO |