Fix project1/extra

main/src/main/java/sbt/internal/MetaBuildLoader.java

@@ -81,41 +81,27 @@ public final class MetaBuildLoader extends URLClassLoader {
             jnaJars);
     final Pattern pattern = Pattern.compile(fullPattern);
     final File[] cp = appProvider.mainClasspath();
-    final URL[] interfaceURLs = new URL[3];
-    final URL[] jlineURLs = new URL[7];
+    final Set<File> interfaceFiles = new LinkedHashSet<>();
+    final Set<File> jlineFiles = new LinkedHashSet<>();
     final File[] extra =
         appProvider.id().classpathExtra() == null ? new File[0] : appProvider.id().classpathExtra();
     final Set<File> bottomClasspath = new LinkedHashSet<>();
 
-    {
-      int interfaceIndex = 0;
-      int jlineIndex = 0;
-      for (final File file : cp) {
-        final String name = file.getName();
-        if ((name.contains("test-interface")
-                || name.contains("compiler-interface")
-                || name.contains("util-interface"))
-            && pattern.matcher(name).find()) {
-          interfaceURLs[interfaceIndex] = file.toURI().toURL();
-          interfaceIndex += 1;
-        } else if (pattern.matcher(name).find()) {
-          jlineURLs[jlineIndex] = file.toURI().toURL();
-          jlineIndex += 1;
-        } else {
-          bottomClasspath.add(file);
-        }
-      }
-      for (final File file : extra) {
+    for (final File file : cp) {
+      final String name = file.getName();
+      if ((name.contains("test-interface")
+              || name.contains("compiler-interface")
+              || name.contains("util-interface"))
+          && pattern.matcher(name).find()) {
+        interfaceFiles.add(file);
+      } else if (pattern.matcher(name).find()) {
+        jlineFiles.add(file);
+      } else {
         bottomClasspath.add(file);
       }
     }
-    final URL[] rest = new URL[bottomClasspath.size()];
-    {
-      int i = 0;
-      for (final File file : bottomClasspath) {
-        rest[i] = file.toURI().toURL();
-        i += 1;
-      }
+    for (final File file : extra) {
+      bottomClasspath.add(file);
     }
     final ScalaProvider scalaProvider = appProvider.scalaProvider();
     ClassLoader topLoader = scalaProvider.launcher().topLoader();
@@ -148,8 +134,9 @@ public final class MetaBuildLoader extends URLClassLoader {
           }
         };
 
-    final SbtInterfaceLoader interfaceLoader = new SbtInterfaceLoader(interfaceURLs, topLoader);
-    final JLineLoader jlineLoader = new JLineLoader(jlineURLs, interfaceLoader);
+    final SbtInterfaceLoader interfaceLoader =
+        new SbtInterfaceLoader(toURLArray(interfaceFiles), topLoader);
+    final JLineLoader jlineLoader = new JLineLoader(toURLArray(jlineFiles), interfaceLoader);
     final File[] siJars = scalaProvider.jars();
     final URL[] lib = new URL[1];
     int scalaRestCount = siJars.length - 1;
@@ -175,6 +162,17 @@ public final class MetaBuildLoader extends URLClassLoader {
     assert lib[0] != null : "no scala-library.jar";
     final ScalaLibraryClassLoader libraryLoader = new ScalaLibraryClassLoader(lib, jlineLoader);
     final FullScalaLoader fullScalaLoader = new FullScalaLoader(scalaRest, libraryLoader);
-    return new MetaBuildLoader(rest, fullScalaLoader, libraryLoader, interfaceLoader, jlineLoader);
+    return new MetaBuildLoader(
+        toURLArray(bottomClasspath), fullScalaLoader, libraryLoader, interfaceLoader, jlineLoader);
+  }
+
+  private static URL[] toURLArray(Set<File> files) throws java.net.MalformedURLException {
+    URL[] urls = new URL[files.size()];
+    int i = 0;
+    for (final File file : files) {
+      urls[i] = file.toURI().toURL();
+      i += 1;
+    }
+    return urls;
   }
 }

sbt-app/src/sbt-test/project1/extra/build.sbt

@@ -24,22 +24,19 @@ def checkExtra =
     s
   }
 
-def addExtra1(s: State, extra: Seq[File]): State =
-  {
-    val cs = s.configuration.provider.components()
-    val copied = cs.addToComponent("extra", extra.toArray)
-    if(copied) s.reload else s
-  }
+def addExtra1(s: State, extra: Seq[File]): State = {
+  val cs = s.configuration.provider.components()
+  val copied = cs.addToComponent("extra", extra.toArray)
+  if(copied) s.reload else s
+}
 
 def addExtra2(s: State, extra: Seq[File]): State = {
   val reload = State.defaultReload(s)
   val currentID = reload.app
   val currentExtra = currentID.classpathExtra
   val newExtra = (currentExtra ++ extra).distinct
-  if(newExtra.length == currentExtra.length)
-    s
-  else
-  {
+  if(newExtra.length == currentExtra.length) s
+  else {
     val newID = ApplicationID(currentID).copy(extra = extra)
     s.setNext(new State.Return(reload.copy(app = newID)))
   }