Break out deprecated literal constructors, refactor all the things!

1 files changed, 50 insertions, 0 deletions

diff --git a/chiselFrontend/src/main/scala/chisel3/core/package.scala b/chiselFrontend/src/main/scala/chisel3/core/package.scala
new file mode 100644
index 00000000..46dfbe20
--- /dev/null
+++ b/chiselFrontend/src/main/scala/chisel3/core/package.scala
@@ -0,0 +1,50 @@
+package chisel3 {
+  package object core {
+    import internal.firrtl.Width
+
+    /**
+    * These implicit classes allow one to convert scala.Int|scala.BigInt to
+    * Chisel.UInt|Chisel.SInt by calling .asUInt|.asSInt on them, respectively.
+    * The versions .asUInt(width)|.asSInt(width) are also available to explicitly
+    * mark a width for the new literal.
+    *
+    * Also provides .asBool to scala.Boolean and .asUInt to String
+    *
+    * Note that, for stylistic reasons, one should avoid extracting immediately
+    * after this call using apply, ie. 0.asUInt(1)(0) due to potential for
+    * confusion (the 1 is a bit length and the 0 is a bit extraction position).
+    * Prefer storing the result and then extracting from it.
+    */
+    implicit class fromIntToLiteral(val x: Int) {
+      def U: UInt = UInt.Lit(BigInt(x), Width())    // scalastyle:ignore method.name
+      def S: SInt = SInt(BigInt(x), Width())    // scalastyle:ignore method.name
+
+      def asUInt(): UInt = UInt.Lit(x, Width())
+      def asSInt(): SInt = SInt(x, Width())
+      def asUInt(width: Int): UInt = UInt.Lit(x, width)
+      def asSInt(width: Int): SInt = SInt(x, width)
+    }
+
+    implicit class fromBigIntToLiteral(val x: BigInt) {
+      def U: UInt = UInt.Lit(x, Width())       // scalastyle:ignore method.name
+      def S: SInt = SInt(x, Width())       // scalastyle:ignore method.name
+
+      def asUInt(): UInt = UInt.Lit(x, Width())
+      def asSInt(): SInt = SInt(x, Width())
+      def asUInt(width: Int): UInt = UInt.Lit(x, width)
+      def asSInt(width: Int): SInt = SInt(x, width)
+    }
+
+    implicit class fromStringToLiteral(val x: String) {
+      def U: UInt = UInt.Lit(x)       // scalastyle:ignore method.name
+    }
+
+    implicit class fromBooleanToLiteral(val x: Boolean) {
+      def B: Bool = Bool(x)       // scalastyle:ignore method.name
+    }
+
+    implicit class fromDoubleToLiteral(val x: Double) {
+      def F(binaryPoint: Int): FixedPoint = FixedPoint.fromDouble(x, binaryPoint = binaryPoint)
+    }
+  }
+}
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