Config: move all methods into ScalafmtConfig

scalafmt-cli/src/main/scala/org/scalafmt/cli/CliOptions.scala

@@ -4,7 +4,7 @@ import java.io.{InputStream, OutputStream, PrintStream}
 import java.nio.file.{Files, NoSuchFileException, Path}
 
 import metaconfig.Configured
-import org.scalafmt.config.{Config, ConfParsed, ScalafmtConfig}
+import org.scalafmt.config.{ConfParsed, ScalafmtConfig}
 import org.scalafmt.sysops.{AbsoluteFile, GitOps, OsSpecific}
 
 import scala.io.Codec
@@ -145,7 +145,9 @@ case class CliOptions(
     * will return the default configuration
     */
   def scalafmtConfig: Configured[ScalafmtConfig] =
-    hoconOpt.fold(Configured.ok(baseConfig))(Config.fromConf(_, baseConfig))
+    hoconOpt.fold(Configured.ok(baseConfig))(
+      ScalafmtConfig.fromConf(_, baseConfig)
+    )
 
   private[cli] lazy val hoconOpt: Option[ConfParsed] =
     configStr.map(ConfParsed.fromString(_)).orElse {

scalafmt-core/shared/src/main/scala/org/scalafmt/Scalafmt.scala

@@ -10,7 +10,6 @@ import scala.util.Failure
 import scala.util.Success
 import scala.util.Try
 
-import org.scalafmt.config.Config
 import org.scalafmt.Error.PreciseIncomplete
 import org.scalafmt.config.FormatEvent.CreateFormatOps
 import org.scalafmt.config.LineEndings
@@ -191,11 +190,14 @@ object Scalafmt {
 
   // used by ScalafmtReflect.parseConfig
   def parseHoconConfigFile(configPath: Path): Configured[ScalafmtConfig] =
-    Config.fromHoconFile(configPath, ScalafmtConfig.uncheckedDefault)
+    ScalafmtConfig.fromHoconFile(configPath, ScalafmtConfig.uncheckedDefault)
 
   // used by ScalafmtReflect.parseConfig
   def parseHoconConfig(configString: String): Configured[ScalafmtConfig] =
-    Config.fromHoconString(configString, ScalafmtConfig.uncheckedDefault)
+    ScalafmtConfig.fromHoconString(
+      configString,
+      ScalafmtConfig.uncheckedDefault
+    )
 
   /** Utility method to change dialect on ScalafmtConfig.
     *

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

@@ -1,6 +1,7 @@
 package org.scalafmt.config
 
-import java.nio.file
+import java.nio.file.FileSystems
+import java.nio.file.Path
 
 import scala.collection.mutable
 import scala.io.Codec
@@ -18,6 +19,7 @@ import org.scalafmt.sysops.FileOps
 import org.scalafmt.sysops.OsSpecific._
 import org.scalafmt.util.LoggerOps
 import org.scalafmt.util.ValidationOps
+import org.scalafmt.Versions
 
 /** Configuration options for scalafmt.
   *
@@ -198,7 +200,7 @@ case class ScalafmtConfig(
       eitherPat -> cfg
     }
     val langResult = patStyles.collect { case (Left(lang), cfg) => lang -> cfg }
-    val fs = file.FileSystems.getDefault
+    val fs = FileSystems.getDefault
     val pmResult = patStyles.collect { case (Right(pat), cfg) =>
       val pattern = if (pat(0) == '.') "glob:**" + pat else pat.asFilename
       fs.getPathMatcher(pattern) -> cfg
@@ -492,4 +494,38 @@ object ScalafmtConfig {
         .andThen(validate)
     }
 
+  def fromHoconString(
+      string: String,
+      default: ScalafmtConfig = ScalafmtConfig.default,
+      path: Option[String] = None
+  ): Configured[ScalafmtConfig] =
+    fromConf(ConfParsed.fromString(string, path), default = default)
+
+  /** Read ScalafmtConfig from String contents from an optional HOCON path. */
+  def fromHoconFile(
+      file: Path,
+      default: ScalafmtConfig = ScalafmtConfig.default,
+      path: Option[String] = None
+  ): Configured[ScalafmtConfig] =
+    fromConf(ConfParsed.fromPath(file, path), default = default)
+
+  def fromConf(
+      parsed: ConfParsed,
+      default: ScalafmtConfig
+  ): Configured[ScalafmtConfig] = {
+    ScalafmtConfig.decoder.read(Option(default), parsed.conf) match {
+      case Configured.Ok(x)
+          if default.version == null &&
+            x.version != Versions.stable && x.version != Versions.version =>
+        val version = Option(x.version).getOrElse("missing")
+        val expected = s"${Versions.stable} or ${Versions.version}"
+        Configured.error(s"version [expected $expected]: $version")
+      case Configured.Ok(x)
+          if default.eq(ScalafmtConfig.uncheckedDefault) &&
+            x.runner.isDefaultDialect =>
+        Configured.error(NamedDialect.getUnknownError)
+      case x => x
+    }
+  }
+
 }

scalafmt-core/shared/src/main/scala/org/scalafmt/util/StyleMap.scala

@@ -9,7 +9,6 @@ import scala.meta.tokens.Token.LeftParen
 import scala.meta.tokens.Token.RightParen
 
 import org.scalafmt.config.BinPack
-import org.scalafmt.config.Config
 import org.scalafmt.config.FilterMatcher
 import org.scalafmt.config.ScalafmtConfig
 import org.scalafmt.internal.FormatToken
@@ -50,7 +49,8 @@ class StyleMap(
       }
       tok.left match {
         case Comment(c) if prefix.findFirstIn(c).isDefined =>
-          val configured = Config.fromHoconString(c, init, Some("scalafmt"))
+          val configured =
+            ScalafmtConfig.fromHoconString(c, init, Some("scalafmt"))
           // TODO(olafur) report error via callback
           configured.foreach(logger.elem(_)) { style =>
             init.rewrite.rulesChanged(style.rewrite).foreach { x =>

scalafmt-docs/src/main/scala/docs/ScalafmtModifier.scala

@@ -1,7 +1,6 @@
 package docs
 
 import org.scalafmt.Scalafmt
-import org.scalafmt.config.Config
 import org.scalafmt.config.NamedDialect
 import org.scalafmt.config.ScalafmtConfig
 import scala.meta.inputs.Input
@@ -32,7 +31,7 @@ class ScalafmtModifier extends StringModifier {
     } else {
       val config = Input.Slice(code, 0, i)
       val program = Input.Slice(code, i + separator.length, code.chars.length)
-      val configured = Config.fromHoconString(config.text, base)
+      val configured = ScalafmtConfig.fromHoconString(config.text, base)
       configured.fold { e =>
         reporter.error(pos, e.toString())
         "fail"

scalafmt-docs/src/main/scala/website/package.scala

@@ -5,7 +5,6 @@ import java.nio.file.StandardOpenOption
 import org.scalafmt.Scalafmt
 import org.scalafmt.config.ScalafmtRunner
 import org.scalafmt.config.ScalafmtConfig
-import org.scalafmt.config.Config
 
 package object website {
   def replaceMargin(s: String): String = {
@@ -70,7 +69,10 @@ package object website {
   ): Unit = {
     val processedCode = preProcess(code)
     val parsedConfig1 =
-      Config.fromHoconString(config.mkString("\n")).get.copy(runner = runner)
+      ScalafmtConfig
+        .fromHoconString(config.mkString("\n"))
+        .get
+        .copy(runner = runner)
     val isCustomMaxColumn = config.exists(_.contains("maxColumn"))
     val parsedConfig =
       if (isCustomMaxColumn) parsedConfig1
@@ -103,7 +105,7 @@ package object website {
     *   the config to format the code (defaults to `default40`)
     */
   def formatExample(code: String, config: String*): Unit = {
-    val parsedConfig = Config
+    val parsedConfig = ScalafmtConfig
       .fromHoconString(config.mkString("\n"))
       .get
       .copy(maxColumn = 40, runner = ScalafmtRunner.sbt)

scalafmt-tests/src/test/scala/org/scalafmt/cli/CliOptionsTest.scala

@@ -2,7 +2,7 @@ package org.scalafmt.cli
 
 import java.nio.file.{Files, NoSuchFileException, Path, Paths}
 
-import org.scalafmt.config.{Config, ScalafmtConfig}
+import org.scalafmt.config.ScalafmtConfig
 import FileTestOps._
 import org.scalafmt.Versions
 
@@ -12,31 +12,30 @@ import munit.FunSuite
 class CliOptionsTest extends FunSuite {
 
   test("preset = ...") {
-    import org.scalafmt.config.Config
     assertEquals(
-      Config.fromHoconString("preset = foobar"),
+      ScalafmtConfig.fromHoconString("preset = foobar"),
       Configured.error(
         "Unknown style \"foobar\". Expected one of: " +
           "Scala.js, IntelliJ, default, defaultWithAlign"
       )
     )
 
     assertEquals(
-      Config.fromHoconString("""|preset = defaultWithAlign
+      ScalafmtConfig.fromHoconString("""|preset = defaultWithAlign
         |maxColumn = 100
         |""".stripMargin),
       Configured.ok(ScalafmtConfig.defaultWithAlign.copy(maxColumn = 100))
     )
     assertEquals(
-      Config.fromHoconString("preset = intellij"),
+      ScalafmtConfig.fromHoconString("preset = intellij"),
       Configured.ok(ScalafmtConfig.intellij)
     )
     assertEquals(
-      Config.fromHoconString("preset = Scala.js"),
+      ScalafmtConfig.fromHoconString("preset = Scala.js"),
       Configured.ok(ScalafmtConfig.scalaJs)
     )
     assertEquals(
-      Config.fromHoconString("preset = defaultWithAlign"),
+      ScalafmtConfig.fromHoconString("preset = defaultWithAlign"),
       Configured.ok(ScalafmtConfig.defaultWithAlign)
     )
   }
@@ -52,7 +51,7 @@ class CliOptionsTest extends FunSuite {
         )
       )
       .configPath
-    val config = Config.fromHoconFile(path).get
+    val config = ScalafmtConfig.fromHoconFile(path).get
     assertEquals(config.onTestFailure, expected)
   }
 

scalafmt-tests/src/test/scala/org/scalafmt/cli/CliTest.scala

@@ -14,7 +14,7 @@ import munit.FunSuite
 import org.scalafmt.Error.NoMatchingFiles
 import org.scalafmt.Versions.{stable => stableVersion}
 import org.scalafmt.cli.FileTestOps._
-import org.scalafmt.config.{Config, ProjectFiles, ScalafmtConfig}
+import org.scalafmt.config.{ProjectFiles, ScalafmtConfig}
 import org.scalafmt.sysops.{AbsoluteFile, FileOps}
 import org.scalafmt.sysops.OsSpecific._
 
@@ -80,7 +80,7 @@ abstract class AbstractCliTest extends FunSuite {
       |""".stripMargin
 
   def gimmeConfig(string: String): ScalafmtConfig =
-    Config.fromHoconString(string).get
+    ScalafmtConfig.fromHoconString(string).get
 
   def noArgTest(
       input: AbsoluteFile,

scalafmt-tests/src/test/scala/org/scalafmt/config/ScalafmtConfigTest.scala

@@ -5,7 +5,7 @@ import munit.FunSuite
 class ScalafmtConfigTest extends FunSuite {
 
   test("project.matcher") {
-    val config = Config
+    val config = ScalafmtConfig
       .fromHoconString(
         """
           |project.excludeFilters = [
@@ -21,7 +21,7 @@ class ScalafmtConfigTest extends FunSuite {
   }
 
   test("file overrides") {
-    val config = Config
+    val config = ScalafmtConfig
       .fromHoconString(
         """
           |newlines.source = fold
@@ -47,7 +47,7 @@ class ScalafmtConfigTest extends FunSuite {
   }
 
   test("align preset no override") {
-    val config = Config
+    val config = ScalafmtConfig
       .fromHoconString("""
         |align = none
         |align.stripMargin = true
@@ -58,7 +58,7 @@ class ScalafmtConfigTest extends FunSuite {
   }
 
   test("align preset with override") {
-    val config = Config
+    val config = ScalafmtConfig
       .fromHoconString("""
         |align.preset = none
         |align.stripMargin = true
@@ -68,13 +68,13 @@ class ScalafmtConfigTest extends FunSuite {
   }
 
   test("dialect override") {
-    val config1 = Config
+    val config1 = ScalafmtConfig
       .fromHoconString("""
         |runner.dialect = scala213
         |""".stripMargin)
       .get
     assert(!config1.runner.getDialect.allowToplevelTerms)
-    val config2 = Config
+    val config2 = ScalafmtConfig
       .fromHoconString("""
         |runner.dialectOverride.allowToplevelTerms = true
         |runner.dialect = scala213
@@ -84,7 +84,7 @@ class ScalafmtConfigTest extends FunSuite {
   }
 
   test("hasRewriteRules-and-withoutRewriteRules trailingCommas") {
-    val config1 = Config
+    val config1 = ScalafmtConfig
       .fromHoconString("""
         |runner.dialect = scala213
         |rewrite.trailingCommas = never
@@ -96,7 +96,7 @@ class ScalafmtConfigTest extends FunSuite {
   }
 
   test("hasRewriteRules-and-withoutRewriteRules docstrings") {
-    val config1 = Config
+    val config1 = ScalafmtConfig
       .fromHoconString("""
         |runner.dialect = scala213
         |rewrite.trailingCommas = keep

scalafmt-tests/src/test/scala/org/scalafmt/util/HasTests.scala

@@ -9,7 +9,6 @@ import munit.Assertions._
 import org.scalafmt.{Debug, Scalafmt}
 import org.scalafmt.config.FormatEvent._
 import org.scalafmt.config.{
-  Config,
   DanglingParentheses,
   Indents,
   NamedDialect,
@@ -93,7 +92,7 @@ trait HasTests extends FormatAssertions {
     val moduleSkip = isSkip(head)
 
     def loadStyle(cfg: String, base: ScalafmtConfig): ScalafmtConfig =
-      Config.fromHoconString(cfg, base).getOrRecover { c =>
+      ScalafmtConfig.fromHoconString(cfg, base).getOrRecover { c =>
         throw new IllegalArgumentException(
           s"""Failed to parse filename $filename:
             |$cfg