Do not update source positions once initizlized

scala · Jul 29, 2021 · 010302a · 010302a
1 parent a28aee1
commit 010302a
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala b/compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala
@@ -1399,7 +1399,7 @@ class TreeUnpickler(reader: TastyReader,
       if (path.nonEmpty) {
         val sourceFile = ctx.getSource(path)
         posUnpicklerOpt match
-          case Some(posUnpickler) =>
+          case Some(posUnpickler) if !sourceFile.initizlized =>
             sourceFile.setLineIndicesFromLineSizes(posUnpickler.lineSizes)
           case _ =>
         pickling.println(i"source change at $addr: $path")

diff --git a/compiler/src/dotty/tools/dotc/util/SourceFile.scala b/compiler/src/dotty/tools/dotc/util/SourceFile.scala
@@ -144,6 +144,9 @@ class SourceFile(val file: AbstractFile, computeContent: => Array[Char]) extends
     if lineIndicesCache eq null then
       lineIndicesCache = calculateLineIndicesFromContents()
     lineIndicesCache
+
+  def initizlized = lineIndicesCache != null
+
   def setLineIndicesFromLineSizes(sizes: Array[Int]): Unit =
     val lines = sizes.length
     val indices = new Array[Int](lines + 1)