From a4895b85928399db4ed8d744ac3fc7208bee3a2f Mon Sep 17 00:00:00 2001
From: Lukas Rytz <lukas.rytz@epfl.ch>
Date: Wed, 4 Nov 2009 18:25:19 +0000
Subject: fix cyclic reference errors in scaladoc.

---
 src/compiler/scala/tools/nsc/Global.scala | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

(limited to 'src/compiler/scala/tools/nsc/Global.scala')

diff --git a/src/compiler/scala/tools/nsc/Global.scala b/src/compiler/scala/tools/nsc/Global.scala
index 8c8d0be322..191016e133 100644
--- a/src/compiler/scala/tools/nsc/Global.scala
+++ b/src/compiler/scala/tools/nsc/Global.scala
@@ -777,7 +777,8 @@ class Global(var settings: Settings, var reporter: Reporter) extends SymbolTable
 
     /** Compile list of source files */
     def compileSources(_sources: List[SourceFile]) {
-      val sources = dependencyAnalysis.filter(_sources.removeDuplicates) // bug #1268, scalac confused by duplicated filenames
+      val depSources = dependencyAnalysis.filter(_sources.removeDuplicates) // bug #1268, scalac confused by duplicated filenames
+      val sources = pkgObjectsFirst(depSources)
       if (reporter.hasErrors)
         return  // there is a problem already, e.g. a
                 // plugin was passed a bad option
@@ -921,6 +922,27 @@ class Global(var settings: Settings, var reporter: Reporter) extends SymbolTable
       }
       if (!pclazz.isRoot) resetPackageClass(pclazz.owner)
     }
+
+    private def pkgObjectsFirst(files: List[SourceFile]) = {
+      def inScalaFolder(f: SourceFile) =
+        f.file.container.name == "scala"
+      val res = new ListBuffer[SourceFile]
+      var scalaObject: Option[SourceFile] = None
+      var lowPriorityImplicits: Option[SourceFile] = None
+      var predef: Option[SourceFile] = None
+      for (file <- files) file.file.name match {
+        case "ScalaObject.scala"          if inScalaFolder(file) => scalaObject = Some(file)
+        case "LowPriorityImplicits.scala" if inScalaFolder(file) => lowPriorityImplicits = Some(file)
+        case "Predef.scala"               if inScalaFolder(file) => predef = Some(file)
+        case "package.scala" => file +=: res // prepend package objects
+        case _ => res += file                // append all others
+      }
+      val f: SourceFile => Unit = res.+=:(_)
+      predef map f                // Predef 3rd
+      lowPriorityImplicits map f  // LowPriorityImplicits 2nd
+      scalaObject map f           // ScalaObject 1st
+      res.toList                  // then package objects, then others
+    }
   } // class Run
 
   def printAllUnits() {
-- 
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