honor -encoding compiler flag and defaults

rename test/pos/valueclasses to pos_valueclasses

tests/pos/valueclasses generates a valueclasses.flags
file in /tests/partest-generated/pos that conflicts
with the valueClasses.flags file that
tests/neg/valueClasses.scala tries to create

1 files changed, 4 insertions, 3 deletions

diff --git a/src/dotty/tools/dotc/util/SourceFile.scala b/src/dotty/tools/dotc/util/SourceFile.scala
index 6b547203e..344bc253a 100644
--- a/src/dotty/tools/dotc/util/SourceFile.scala
+++ b/src/dotty/tools/dotc/util/SourceFile.scala
@@ -10,6 +10,7 @@ import java.io.IOException
 import Chars._
 import ScriptSourceFile._
 import Positions._
+import scala.io.Codec
 
 import java.util.Optional
 
@@ -36,9 +37,9 @@ object ScriptSourceFile {
 
 case class SourceFile(file: AbstractFile, content: Array[Char]) extends interfaces.SourceFile {
 
-  def this(_file: AbstractFile)                 = this(_file, _file.toCharArray)
-  def this(sourceName: String, cs: Seq[Char])   = this(new VirtualFile(sourceName), cs.toArray)
-  def this(file: AbstractFile, cs: Seq[Char])   = this(file, cs.toArray)
+  def this(_file: AbstractFile, codec: Codec) = this(_file, new String(_file.toByteArray, codec.charSet).toCharArray)
+  def this(sourceName: String, cs: Seq[Char]) = this(new VirtualFile(sourceName), cs.toArray)
+  def this(file: AbstractFile, cs: Seq[Char]) = this(file, cs.toArray)
 
   /** Tab increment; can be overridden */
   def tabInc = 8