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// See LICENSE for license details.
/** Enum generators, allowing circuit constants to have more meaningful names.
*/
package chisel3.util
import chisel3._
object Enum {
/** Returns a sequence of Bits subtypes with values from 0 until n. Helper method. */
private def createValues[T <: Bits](nodeType: T, n: Int): Seq[T] =
(0 until n).map(x => nodeType.fromInt(x, log2Up(n)))
/** create n enum values of given type */
def apply[T <: Bits](nodeType: T, n: Int): List[T] = createValues(nodeType, n).toList
/** create enum values of given type and names */
def apply[T <: Bits](nodeType: T, l: Symbol *): Map[Symbol, T] = (l zip createValues(nodeType, l.length)).toMap
/** create enum values of given type and names */
def apply[T <: Bits](nodeType: T, l: List[Symbol]): Map[Symbol, T] = (l zip createValues(nodeType, l.length)).toMap
}
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