1package utils 2 3import chisel3._ 4import chisel3.util._ 5 6import scala.collection.mutable 7 8object SeqUtils { 9 /** 10 * @todo remove it when when xiangshan is updated to 2.13.11 11 */ 12 def distinctBy[A, B](seqLike: Seq[B])(f: B => A): Seq[B] = { 13 val seen = new mutable.HashSet[A]() 14 var res = Seq[B]() 15 val it = seqLike.iterator 16 while (it.hasNext) { 17 val next = it.next 18 if (seen.add(f(next))) { 19 res :+= next 20 } 21 } 22 res 23 } 24 25 type Seq2[+T] = Seq[Seq[T]] 26 type Seq3[+T] = Seq2[Seq[T]] 27 type MixedVec2[T <: Data] = MixedVec[MixedVec[T]] 28 type MixedVec3[T <: Data] = MixedVec2[MixedVec[T]] 29 30 def mapToMixedVec[T, A <: Data](in: Seq[T], f: T => A): MixedVec[A] = { 31 MixedVec(in.map(f)) 32 } 33 34 def mapToMixedVec2[T, A <: Data](in: Seq2[T], f: T => A): MixedVec2[A] = { 35 MixedVec(in.map(x => mapToMixedVec(x, f))) 36 } 37 38 def mapToMixedVec3[T, A <: Data](in: Seq3[T], f: T => A): MixedVec3[A] = { 39 MixedVec(in.map(x => mapToMixedVec2(x, f))) 40 } 41} 42