ScalafmtConfig: move importSelectors to binPack

docs/configuration.md

@@ -236,7 +236,6 @@ The preset itself is defined as:
       defnSite = false
     }
     docstrings.style = Asterisk
-    importSelectors = binPack
     indent.callSite = 4
     newlines {
       avoidInResultType = true
@@ -5299,22 +5298,44 @@ the selection of breaks, such as when dealing with multiline arguments
 If set explicitly, will be used for type arguments or parameters,
 instead of the respective [`binPack.xxxSite`](#binpackxxxsite).
 
-### binpacking of `importSelectors`
+### `binPack.importSelectors`
 
 Import selectors (those grouped in `{...}`) will always be formatted on a single
 line if they fit without exceeding `maxColumn`. This parameter controls how they
 will be handled _if_ they overflow.
 
 ```scala mdoc:defaults
-importSelectors
+# called `importSelectors` prior to v3.8.4
+binPack.importSelectors
 ```
 
 Takes the following parameters:
 
-- `noBinPack`: format one per line
-- `binPack`: binpack, with as many as would fit on each line
+- `unfold`: format one per line (prior to v3.8.4, called `noBinPack`)
+- `fold`: fit as many as possible on each line (prior to v3.8.4, called `binPack`)
 - `singleLine`: format all on one line
 
+```scala mdoc:scalafmt
+maxColumn = 10
+binPack.importSelectors = unfold
+---
+import a.b.{c, d, e, f, g}
+```
+
+```scala mdoc:scalafmt
+maxColumn = 10
+binPack.importSelectors = fold
+---
+import a.b.{c, d, e, f, g}
+```
+
+```scala mdoc:scalafmt
+maxColumn = 10
+binPack.importSelectors = singleLine
+---
+import a.b.{c, d, e, f, g}
+```
+
 ## Classic select chains
 
 The parameters below control formatting of select chains when
@@ -5488,35 +5509,6 @@ is set and `git` parameter
 is configured, then default value will be changed to `windows` if
 `autocrlf=true`, and `preserve` if `false`.
 
-### `importSelectors`
-
-This parameter controls formatting of imports.
-
-```scala mdoc:defaults
-importSelectors
-```
-
-```scala mdoc:scalafmt
-maxColumn = 10
-importSelectors = noBinPack
----
-import a.b.{c, d, e, f, g}
-```
-
-```scala mdoc:scalafmt
-maxColumn = 10
-importSelectors = binPack
----
-import a.b.{c, d, e, f, g}
-```
-
-```scala mdoc:scalafmt
-maxColumn = 10
-importSelectors = singleLine
----
-import a.b.{c, d, e, f, g}
-```
-
 ## Markdown Formatting
 
 > Since v3.0.0.

scalafmt-core/shared/src/main/scala/org/scalafmt/config/BinPack.scala

@@ -25,6 +25,12 @@ import metaconfig._
   *   Parent constructors are C and D in "class A extends B with C and D". If
   *   "Always", scalafmt will fit as many parent constructors on a single line.
   *   If "Never", each parent constructor gets its own line.
+  * @param importSelectors
+  *   Controls formatting of import selectors with multiple names from the same
+  *   package (default is currently `unfold`)
+  *   - If `fold`, arranged to fit within the maximum line width
+  *   - If `unfold`, broken to one per line
+  *   - If `singleLine`, kept on a single line
   */
 case class BinPack(
     @annotation.ExtraName("unsafeCallSite")
@@ -42,6 +48,7 @@ case class BinPack(
     literalsMinArgCount: Int = 5,
     literalsInclude: Seq[String] = Seq(".*"),
     literalsExclude: Seq[String] = Seq("String", "Term.Name"),
+    importSelectors: ImportSelectors = ImportSelectors.unfold,
 ) {
   def literalsRegex: FilterMatcher =
     FilterMatcher(literalsInclude, literalsExclude)
@@ -79,10 +86,18 @@ object BinPack {
     .deriveSurface[BinPack]
   implicit lazy val encoder: ConfEncoder[BinPack] = generic.deriveEncoder
 
-  def ctor(site: Site, parents: ParentCtors): BinPack =
-    BinPack(defnSite = site, callSite = site, parentConstructors = parents)
-
-  val never = BinPack.ctor(Site.Never, ParentCtors.Never)
+  def ctor(
+      site: Site,
+      parents: ParentCtors,
+      imports: ImportSelectors = ImportSelectors.fold,
+  ): BinPack = BinPack(
+    defnSite = site,
+    callSite = site,
+    parentConstructors = parents,
+    importSelectors = imports,
+  )
+
+  val never = BinPack.ctor(Site.Never, ParentCtors.Never, ImportSelectors.unfold)
   val always = BinPack.ctor(Site.Always, ParentCtors.Always)
   private val oneline = BinPack.ctor(Site.Oneline, ParentCtors.Oneline)
   private val onelineSjs = BinPack.ctor(Site.OnelineSjs, ParentCtors.Oneline)

scalafmt-core/shared/src/main/scala/org/scalafmt/config/ImportSelectors.scala

@@ -5,9 +5,9 @@ import metaconfig._
 /** ADT representing import selectors settings, specifically pertaining to the
   * handling when multiple names are imported from the same package.
   *
-  * When [[org.scalafmt.config.ImportSelectors.noBinPack]] is selected, imports
-  * are organized such that each line contains a single name imported from the
-  * base package:
+  * When [[org.scalafmt.config.ImportSelectors.unfold]] is selected, imports are
+  * organized such that each line contains a single name imported from the base
+  * package:
   * {{{
   *   // max columns     |
   *   import org.{
@@ -19,9 +19,9 @@ import metaconfig._
   *   }
   * }}}
   *
-  * When [[org.scalafmt.config.ImportSelectors.binPack]] is selected, imports
-  * are organized such that each line contains as many names as will fit within
-  * the column limit:
+  * When [[org.scalafmt.config.ImportSelectors.fold]] is selected, imports are
+  * organized such that each line contains as many names as will fit within the
+  * column limit:
   * {{{
   *   // max columns     |
   *   import org.{
@@ -43,13 +43,15 @@ sealed abstract class ImportSelectors
 object ImportSelectors {
 
   implicit val codec: ConfCodecEx[ImportSelectors] = ReaderUtil
-    .oneOfCustom[ImportSelectors](noBinPack, binPack, singleLine) {
-      case Conf.Bool(true) => Configured.ok(ImportSelectors.binPack)
-      case Conf.Bool(false) => Configured.ok(ImportSelectors.noBinPack)
+    .oneOfCustom[ImportSelectors](unfold, fold, singleLine) {
+      case Conf.Bool(value) => Configured
+          .ok(if (value) ImportSelectors.fold else ImportSelectors.unfold)
+      case Conf.Str("binPack") => Configured.ok(ImportSelectors.fold)
+      case Conf.Str("noBinPack") => Configured.ok(ImportSelectors.unfold)
     }
 
-  case object noBinPack extends ImportSelectors
-  case object binPack extends ImportSelectors
+  case object fold extends ImportSelectors
+  case object unfold extends ImportSelectors
   case object singleLine extends ImportSelectors
 
 }

scalafmt-core/shared/src/main/scala/org/scalafmt/config/ScalafmtConfig.scala

@@ -42,15 +42,6 @@ import metaconfig._
   *         longerArg3
   *     )
   *   }}}
-  * @param importSelectors
-  *   Controls formatting of import selectors with multiple names from the same
-  *   package
-  *   - If [[org.scalafmt.config.ImportSelectors.binPack]], import selectors are
-  *     arranged to fit within the maximum line width
-  *   - If [[org.scalafmt.config.ImportSelectors.noBinPack]], import selectors
-  *     are broken to one per line
-  *   - If [[org.scalafmt.config.ImportSelectors.singleLine]], import selectors
-  *     are kept on a single line The default setting is currently `noBinPack`.
   * @param lineEndings
   *   - If [[LineEndings.unix]], output will include only unix line endings
   *   - If [[LineEndings.windows]], output will include only windows line
@@ -97,6 +88,8 @@ import metaconfig._
 @annotation.SectionRename("verticalAlignMultilineOperators", "indent.infix.assignmentOnly") // v3.8.4
 @annotation.SectionRename("indentYieldKeyword", "indent.yieldKeyword") // v3.8.4
 @annotation.SectionRename("rewriteTokens", "rewrite.tokens") // v3.8.4
+@annotation.SectionRename("importSelectors", "binPack.importSelectors") // v3.8.4
+@annotation.SectionRename("binPackImportSelectors", "binPack.importSelectors") // v3.8.4
 // scalafmt: { maxColumn = 80 }
 case class ScalafmtConfig(
     version: String = org.scalafmt.Versions.stable,
@@ -114,8 +107,6 @@ case class ScalafmtConfig(
     rewrite: RewriteSettings = RewriteSettings.default,
     newlines: Newlines = Newlines(),
     runner: ScalafmtRunner = ScalafmtRunner.default,
-    @annotation.ExtraName("binPackImportSelectors")
-    importSelectors: ImportSelectors = ImportSelectors.noBinPack,
     includeCurlyBraceInSelectChains: Boolean = true,
     includeNoParensInSelectChains: Boolean = false,
     assumeStandardLibraryStripMargin: Boolean = false,
@@ -281,7 +272,6 @@ case class ScalafmtConfig(
     binPack = BinPack.always,
     danglingParentheses = DanglingParentheses(false, false),
     indent = Indents(callSite = 4, defnSite = 4),
-    importSelectors = ImportSelectors.binPack,
     newlines = newlines.copy(
       avoidInResultType = true,
       neverBeforeJsNative = true,

scalafmt-core/shared/src/main/scala/org/scalafmt/internal/Router.scala

@@ -139,18 +139,18 @@ class Router(formatOps: FormatOps) {
         val beforeClose = prev(close)
         val policy = SingleLineBlock(
           close,
-          okSLC = style.importSelectors eq ImportSelectors.singleLine,
+          okSLC = style.binPack.importSelectors eq ImportSelectors.singleLine,
         )
         val newlineBeforeClosingCurly = decideNewlinesOnlyBeforeClose(close)
 
         val mustDangleForTrailingCommas =
           getMustDangleForTrailingCommas(beforeClose)
         val mustUseNL = hasBreak() && isRightCommentThenBreak(ft)
-        val newlinePolicy = style.importSelectors match {
+        val newlinePolicy = style.binPack.importSelectors match {
           case ImportSelectors.singleLine if mustUseNL => policy
           case ImportSelectors.singleLine if !mustDangleForTrailingCommas =>
             NoPolicy
-          case ImportSelectors.binPack => newlineBeforeClosingCurly
+          case ImportSelectors.fold => newlineBeforeClosingCurly
           case _ => newlineBeforeClosingCurly &
               splitOneArgOneLine(close, leftOwner)
         }