Add feature warnings to build, fix feature warnings, fix some documentation (#387)

5 files changed, 13 insertions, 7 deletions

diff --git a/src/main/scala/chisel3/compatibility.scala b/src/main/scala/chisel3/compatibility.scala
index 4ffd0b86..613385af 100644
--- a/src/main/scala/chisel3/compatibility.scala
+++ b/src/main/scala/chisel3/compatibility.scala
@@ -120,7 +120,7 @@ package object Chisel {     // scalastyle:ignore package.object.name
     */
   trait BoolFactory extends chisel3.core.BoolFactory {
     /** Creates Bool literal.
-     */
+      */
     def apply(x: Boolean): Bool = x.B
 
     /** Create a UInt with a specified direction and width - compatibility with Chisel2. */
diff --git a/src/main/scala/chisel3/package.scala b/src/main/scala/chisel3/package.scala
index 449f4ea5..e4e64b89 100644
--- a/src/main/scala/chisel3/package.scala
+++ b/src/main/scala/chisel3/package.scala
@@ -1,6 +1,8 @@
 // See LICENSE for license details.
 
 package object chisel3 {    // scalastyle:ignore package.object.name
+  import scala.language.implicitConversions
+
   import internal.firrtl.Width
 
   import util.BitPat
@@ -267,11 +269,11 @@ package object chisel3 {    // scalastyle:ignore package.object.name
       import internal.firrtl.NumericBound
 
       /** Specifies a range using mathematical range notation. Variables can be interpolated using
-       *  standard string interpolation syntax.
+        * standard string interpolation syntax.
         * @example {{{
         * UInt(range"[0, 2)")
-        * UInt(range"[0, $myInt)")
-        * UInt(range"[0, ${myInt + 2})")
+        * UInt(range"[0, \$myInt)")
+        * UInt(range"[0, \${myInt + 2})")
         * }}}
         */
       def range(args: Any*): (NumericBound[Int], NumericBound[Int]) = macro chisel3.internal.RangeTransform.apply
diff --git a/src/main/scala/chisel3/testers/TesterDriver.scala b/src/main/scala/chisel3/testers/TesterDriver.scala
index 76b9a2e9..83f3c796 100644
--- a/src/main/scala/chisel3/testers/TesterDriver.scala
+++ b/src/main/scala/chisel3/testers/TesterDriver.scala
@@ -14,7 +14,7 @@ object TesterDriver extends BackendCompilationUtilities {
       throw new FileNotFoundException(s"Resource '$name'")
     }
     val out = new FileOutputStream(file)
-    Iterator.continually(in.read).takeWhile(-1 !=).foreach(out.write)
+    Iterator.continually(in.read).takeWhile(-1 != _).foreach(out.write)
     out.close()
   }
 
diff --git a/src/main/scala/chisel3/util/ImplicitConversions.scala b/src/main/scala/chisel3/util/ImplicitConversions.scala
index c2ba710d..712975a7 100644
--- a/src/main/scala/chisel3/util/ImplicitConversions.scala
+++ b/src/main/scala/chisel3/util/ImplicitConversions.scala
@@ -4,6 +4,8 @@ package chisel3.util
 
 import chisel3._
 
+import scala.language.implicitConversions
+
 object ImplicitConversions {
   // The explicit fromIntToLiteral resolves an ambiguous conversion between fromIntToLiteral and
   // UInt.asUInt.
diff --git a/src/main/scala/chisel3/util/Valid.scala b/src/main/scala/chisel3/util/Valid.scala
index 49a6f515..0229b7f8 100644
--- a/src/main/scala/chisel3/util/Valid.scala
+++ b/src/main/scala/chisel3/util/Valid.scala
@@ -52,10 +52,12 @@ object Pipe
 
 class Pipe[T <: Data](gen: T, latency: Int = 1) extends Module
 {
-  val io = IO(new Bundle {
+  class PipeIO extends Bundle {
     val enq = Input(Valid(gen))
     val deq = Output(Valid(gen))
-  })
+  }
+
+  val io = IO(new PipeIO)
 
   io.deq <> Pipe(io.enq, latency)
 }