refactor clues

munit/shared/src/main/scala-2/munit/internal/MacroCompat.scala

@@ -1,6 +1,6 @@
 package munit.internal
 
-import munit.diff.Clue
+import munit.Clue
 import munit.Location
 import scala.language.experimental.macros
 import scala.reflect.macros.blackbox.Context

munit/shared/src/main/scala-3/munit/internal/MacroCompat.scala

@@ -1,6 +1,6 @@
 package munit.internal
 
-import munit.diff.Clue
+import munit.Clue
 import munit.Location
 import scala.quoted._
 import scala.language.experimental.macros

munit/shared/src/main/scala/munit/Assertions.scala

@@ -3,8 +3,8 @@ package munit
 import munit.internal.console.{Lines, StackTraces}
 import munit.diff.console.Printers
 import munit.diff.Printer
-import munit.diff.Clue
-import munit.diff.Clues
+import munit.Clue
+import munit.Clues
 import munit.diff.EmptyPrinter
 
 import scala.reflect.ClassTag

munit/shared/src/main/scala/munit/Clue.scala

@@ -2,16 +2,16 @@ package munit
 
 import munit.internal.MacroCompat
 
-// class Clue[+T](
-//     val source: String,
-//     val value: T,
-//     val valueType: String
-// ) extends Serializable {
-//   override def toString(): String = s"Clue($source, $value)"
-// }
+class Clue[+T](
+    val source: String,
+    val value: T,
+    val valueType: String
+) extends Serializable {
+  override def toString(): String = s"Clue($source, $value)"
+}
 object Clue extends MacroCompat.ClueMacro {
   @deprecated("use fromValue instead", "1.0.0")
-  def empty[T](value: T): munit.diff.Clue[T] = fromValue(value)
-  def fromValue[T](value: T): munit.diff.Clue[T] =
-    new munit.diff.Clue("", value, "")
+  def empty[T](value: T): Clue[T] = fromValue(value)
+  def fromValue[T](value: T): Clue[T] =
+    new Clue("", value, "")
 }

munit/shared/src/main/scala/munit/Clues.scala

@@ -1,11 +1,40 @@
 package munit
 
-import munit.internal.console.Printers
-
-// class Clues(val values: List[Clue[_]]) {
-//   override def toString(): String = Printers.print(this)
-// }
-// object Clues {
-//   def empty: Clues = new Clues(List())
-//   def fromValue[T](value: T): Clues = new Clues(List(Clue.fromValue(value)))
-// }
+import munit.diff.console.Printers
+import munit.diff.NextPrintable
+
+class Clues(val values: List[Clue[_]]) extends NextPrintable {
+
+  override def print(
+      out: StringBuilder,
+      indent: Int,
+      continue: (Any, Int) => Unit
+  ): Unit = {
+    val nextIndent = indent + Printers.indentStep
+    Printers.printApply(
+      "Clues",
+      values.iterator,
+      out,
+      indent,
+      nextIndent,
+      open = " {",
+      close = "}",
+      comma = ""
+    ) { clue =>
+      if (clue.source.nonEmpty) {
+        out.append(clue.source)
+      }
+      if (clue.valueType.nonEmpty) {
+        out.append(": ").append(clue.valueType)
+      }
+      out.append(" = ")
+      continue(clue.value, nextIndent)
+    }
+  }
+
+  override def toString(): String = Printers.print(this)
+}
+object Clues {
+  def empty: Clues = new Clues(List())
+  def fromValue[T](value: T): Clues = new Clues(List(Clue.fromValue(value)))
+}

munit/shared/src/main/scala/munit/internal/MacroCompatScala2.scala

@@ -1,6 +1,6 @@
 package munit.internal
 
-import munit.diff.Clue
+import munit.Clue
 import munit.Location
 import scala.reflect.macros.blackbox.Context
 import scala.reflect.macros.TypecheckException

munit/shared/src/main/scala/munit/internal/console/Lines.scala

@@ -6,7 +6,7 @@ import munit.Location
 import scala.collection.JavaConverters._
 import scala.collection.mutable
 import scala.util.control.NonFatal
-import munit.diff.Clues
+import munit.Clues
 
 class Lines extends Serializable {
   private val filecache = mutable.Map.empty[Path, Array[String]]

scala-diff/shared/src/main/scala/munit/diff/NextPrintable.scala

@@ -0,0 +1,8 @@
+package munit.diff
+
+/**
+ * Don't override this ever
+ */
+trait NextPrintable {
+  def print(out: StringBuilder, indent: Int, continue: (Any, Int) => Unit): Unit
+}

scala-diff/shared/src/main/scala/munit/diff/console/Printers.scala

@@ -1,19 +1,19 @@
 // Adaptation of https://github.com/lihaoyi/PPrint/blob/e6a918c259ed7ae1998bbf58c360334a3f0157ca/pprint/src/pprint/Walker.scala
 package munit.diff.console
 
-import munit.diff.{EmptyPrinter, Printable, Printer}
+import munit.diff.{EmptyPrinter, Printable, NextPrintable, Printer}
 
 import scala.annotation.switch
-import munit.diff.Clues
 import munit.diff.internal.Compat
 
 object Printers {
+  val indentStep = 2
 
   /** Pretty-prints the value in a format that's optimized for producing diffs */
   def print(any: Any, printer: Printer = EmptyPrinter): String = {
     var height = printer.height
     val out = new StringBuilder()
-    val indentStep = 2
+
     def loop(a: Any, indent: Int): Unit = {
       height -= 1
       if (height < 0) {
@@ -24,8 +24,9 @@ object Printers {
       val isDone = printer.print(a, out, indent)
       if (!isDone) {
         a match {
-          case null         => out.append("null")
-          case x: Printable => x.print(out, indent)
+          case null             => out.append("null")
+          case x: Printable     => x.print(out, indent)
+          case x: NextPrintable => x.print(out, indent, loop)
           case x: Char =>
             out.append('\'')
             if (x == '\'') out.append("\\'")
@@ -38,26 +39,6 @@ object Printers {
           case x: Float  => out.append(x.toString())
           case x: Double => out.append(x.toString())
           case x: String => printString(x, out, printer)
-          case x: Clues =>
-            printApply(
-              "Clues",
-              x.values.iterator,
-              out,
-              indent,
-              nextIndent,
-              open = " {",
-              close = "}",
-              comma = ""
-            ) { clue =>
-              if (clue.source.nonEmpty) {
-                out.append(clue.source)
-              }
-              if (clue.valueType.nonEmpty) {
-                out.append(": ").append(clue.valueType)
-              }
-              out.append(" = ")
-              loop(clue.value, nextIndent)
-            }
           case None =>
             out.append("None")
           case Nil =>
@@ -120,7 +101,7 @@ object Printers {
     munit.diff.console.AnsiColors.filterAnsi(out.toString())
   }
 
-  private def printApply[T](
+  private[munit] def printApply[T](
       prefix: String,
       it: Iterator[T],
       out: StringBuilder,

tests/shared/src/test/scala/munit/TypeCheckSuite.scala

@@ -41,7 +41,7 @@ class TypeCheckSuite extends FunSuite {
            |
            |The following import might make progress towards fixing the problem:
            |
-           |  import munit.diff.Clue.generate
+           |  import munit.Clue.generate
            |
            |msg.foobar
            |   ^
@@ -84,7 +84,7 @@ class TypeCheckSuite extends FunSuite {
            |
            |The following import might make progress towards fixing the problem:
            |
-           |  import munit.diff.Clue.generate
+           |  import munit.Clue.generate
            |
            |val n: Int = msg
            |            ^