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typelevel · Jan 24, 2025 · 9e6174a · 9e6174a
1 parent 574c385
commit 9e6174a
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Showing 2 changed files with 10 additions and 12 deletions.
diff --git a/core/shared/src/main/scala/cats/parse/Parser.scala b/core/shared/src/main/scala/cats/parse/Parser.scala
@@ -1585,9 +1585,9 @@ object Parser {
       case _ => Impl.SoftProd(first, second)
     }
 
-  /**
-   * This implements the main method from the Align typeclass
-   */
+  /** This implements the main method from the Align typeclass. This parses the first then maybe the
+    * second, or just the second. Put another way, it parses at least one of the arguments.
+    */
   def align[A, B](pa: Parser[A], pb: Parser[B]): Parser[Ior[A, B]] = {
     val hasA = (pa ~ pb.?)
       .map {
@@ -1600,9 +1600,9 @@ object Parser {
     hasA | onlyB
   }
 
-  /**
-   * This implements the main method from the Align typeclass
-   */
+  /** This implements the main method from the Align typeclass This parses the first then maybe the
+    * second, or just the second. Put another way, it parses at least one of the arguments.
+    */
   def align0[A, B](pa: Parser0[A], pb: Parser0[B]): Parser0[Ior[A, B]] = {
     val hasA = (pa ~ pb.?)
       .map {

diff --git a/core/shared/src/test/scala/cats/parse/ParserTest.scala b/core/shared/src/test/scala/cats/parse/ParserTest.scala
@@ -3073,22 +3073,21 @@ class ParserTest extends munit.ScalaCheckSuite {
       case Left(a) => Left(Left(a))
       case Right(bc) =>
         bc match {
-          case Left(b)    => Left(Right(b))
-          case Right(c)   => Right(c)
+          case Left(b) => Left(Right(b))
+          case Right(c) => Right(c)
           case Both(b, c) => Both(Right(b), c)
         }
       case Both(a, bc) =>
         bc match {
-          case Left(b)    => Left(Both(a, b))
-          case Right(c)   => Both(Left(a), c)
+          case Left(b) => Left(Both(a, b))
+          case Right(c) => Both(Left(a), c)
           case Both(b, c) => Both(Both(a, b), c)
         }
     }
   }
 
   property("align is associative") {
     forAll(ParserGen.gen, ParserGen.gen, ParserGen.gen, arbitrary[String]) { (a, b, c, str) =>
-
       val alignInst = cats.Align[Parser]
       import alignInst.align
 
@@ -3101,7 +3100,6 @@ class ParserTest extends munit.ScalaCheckSuite {
 
   property("align0 is associative") {
     forAll(ParserGen.gen0, ParserGen.gen0, ParserGen.gen0, arbitrary[String]) { (a, b, c, str) =>
-
       val alignInst = cats.Align[Parser0]
       import alignInst.align