/*
 * Copyright 2000-2016 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.openapi.roots;

import com.intellij.openapi.application.ReadAction;
import com.intellij.openapi.extensions.ExtensionPointName;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiElement;
import org.jetbrains.annotations.NotNull;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

/**
 * @author nik
 */
public abstract class GeneratedSourcesFilter {
  public static final ExtensionPointName<GeneratedSourcesFilter> EP_NAME = ExtensionPointName.create("com.intellij.generatedSourcesFilter");

  public static boolean isGeneratedSourceByAnyFilter(@NotNull VirtualFile file, @NotNull Project project) {
    return ReadAction.compute(() -> !project.isDisposed() && file.isValid() &&
                                    Arrays.stream(EP_NAME.getExtensions()).anyMatch(filter -> filter.isGeneratedSource(file, project)));
  }

  public abstract boolean isGeneratedSource(@NotNull VirtualFile file, @NotNull Project project);

  /**
   * Returns all elements that have been processed by a code generator to derive the given element.
   *
   * @param element the generated element
   * @return a list of original elements. An empty result indicates that the element is not considered to be generated by the filter.
   */
  @NotNull
  public List<? extends PsiElement> getOriginalElements(@NotNull PsiElement element) {
    return Collections.emptyList();
  }
}

@@ -915,33 +915,8 @@
 l;%0A%0A
-import java.util.Arrays;%0A
 impo
@@ -1325,9 +1325,20 @@
  -%3E 
-!
+%7B%0A      if (
 proj
@@ -1358,11 +1358,12 @@
 d() 
-&& 
+%7C%7C !
 file
@@ -1376,62 +1376,67 @@
 id()
- &&%0A                                    Arrays.stream(
+) return false;%0A      for (GeneratedSourcesFilter filter : 
 EP_N
@@ -1459,28 +1459,23 @@
 s())
-.anyMatch(filter -%3E 
+ %7B%0A        if (
 filt
@@ -1510,16 +1510,85 @@
 roject))
+ %7B%0A          return true;%0A        %7D%0A      %7D%0A      return false;%0A    %7D
 );%0A  %7D%0A%0A

remove allocations from critical path