exclude gen roots in android-jps

plugins/android/jps-plugin/src/META-INF/services/org.jetbrains.jps.builders.java.ExcludedJavaSourceRootProvider

@@ -0,0 +1 @@
+org.jetbrains.jps.android.AndroidExcludedJavaSourceRootProvider

plugins/android/jps-plugin/src/org/jetbrains/jps/android/AndroidExcludedJavaSourceRootProvider.java

@@ -0,0 +1,38 @@
+package org.jetbrains.jps.android;
+
+import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.util.io.FileUtil;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jps.android.model.JpsAndroidModuleExtension;
+import org.jetbrains.jps.builders.java.ExcludedJavaSourceRootProvider;
+import org.jetbrains.jps.model.module.JpsModule;
+import org.jetbrains.jps.model.module.JpsModuleSourceRoot;
+
+import java.io.IOException;
+
+/**
+ * @author Eugene.Kudelevsky
+ */
+public class AndroidExcludedJavaSourceRootProvider extends ExcludedJavaSourceRootProvider {
+  private static final Logger LOG = Logger.getInstance("#org.jetbrains.jps.android.AndroidExcludedJavaSourceRootProvider");
+
+  @Override
+  public boolean isExcludedFromCompilation(@NotNull JpsModule module, @NotNull JpsModuleSourceRoot root) {
+    final JpsAndroidModuleExtension extension = AndroidJpsUtil.getExtension(module);
+
+    if (extension == null) {
+      return false;
+    }
+    try {
+      for (String genDir : AndroidJpsUtil.getGenDirs(extension)) {
+        if (FileUtil.pathsEqual(genDir, root.getFile().getPath())) {
+          return true;
+        }
+      }
+    }
+    catch (IOException e) {
+      LOG.info(e);
+    }
+    return false;
+  }
+}

plugins/android/jps-plugin/src/org/jetbrains/jps/android/AndroidJpsUtil.java

@@ -652,7 +652,7 @@ public class AndroidJpsUtil {
   }
 
 
-  @Nullable
+  @NotNull
   public static Set<String> getGenDirs(@NotNull JpsAndroidModuleExtension extension) throws IOException {
     final Set<String> result = new HashSet<String>();
     File dir = extension.getAaptGenDir();

plugins/android/src/org/jetbrains/android/compiler/AndroidPrecompileTask.java

@@ -72,7 +72,8 @@ public class AndroidPrecompileTask implements CompileTask {
   public boolean execute(CompileContext context) {
     final Project project = context.getProject();
 
-    // todo: add gen roots to excludes in android-jps and then remove this line
+    // in out-of-process mode gen roots will be excluded by AndroidExcludedJavaSourceRootProvider
+    // we do it here for internal mode and also to make there roots 'visibly excluded' in IDE settings
     createGenModulesAndSourceRoots(project);
 
     if (!CompilerWorkspaceConfiguration.getInstance(project).useOutOfProcessBuild()) {