✨ add Lines extractor

src/main/scala/org/lemon/advent/lib/parse/csv.scala

@@ -1,23 +1,28 @@
 package org.lemon.advent.lib.parse
 
-private trait Sep:
+private trait GenSep:
   val delimeter: String
   def unapplySeq[T](str: String)(using unapply: String => Option[T]): Option[Seq[T]] =
     Some(str.split(delimeter).map(_.trim).toSeq.flatMap(unapply))
 
 /** Matches chunks of a generic type separated by commas.
   */
-object Csv extends Sep:
+object Csv extends GenSep:
   val delimeter = ","
 
 /** Matches chunks of a generic type separated by any whitespace.
   */
-object Wsv extends Sep:
+object Wsv extends GenSep:
   val delimeter = "\\s+"
 
 // givens for delimiter-separated values to be generic
 given (String => Option[String]) = Some(_)
 
+/** Matches each line of a string.
+  */
+object Lines:
+  def unapplySeq(str: String): Option[Seq[String]] = Some(str.linesIterator.toSeq)
+
 /** Matches chunks of text separated by two newlines.
   */
 object Chunk:

src/main/scala/org/lemon/advent/year2024/Day19.scala

@@ -9,7 +9,7 @@ private object Day19:
   def parse(input: String) =
     import org.lemon.advent.lib.parse.{given, _}
     input match
-      case Chunk(Csv[String](towels @ _*), Wsv[String](targets @ _*)) => (towels, targets)
+      case Chunk(Csv[String](towels @ _*), Lines(targets @ _*)) => (towels, targets)
 
   def countLayouts(towels: Seq[String], target: String) =
     lazy val count: String => Long = memoize {