make TempFileSystem extends LocalFileSystem to simplify clients and tests

images/src/org/intellij/images/index/ImageInfoIndex.java

@@ -17,7 +17,6 @@ package org.intellij.images.index;
 
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.openapi.vfs.ex.temp.TempFileSystem;
 import com.intellij.psi.search.GlobalSearchScope;
 import com.intellij.util.indexing.*;
 import com.intellij.util.io.DataExternalizer;
@@ -94,8 +93,8 @@ public class ImageInfoIndex extends SingleEntryFileBasedIndexExtension<ImageInfo
     return new DefaultFileTypeSpecificInputFilter(ImageFileTypeManager.getInstance().getImageFileType()) {
       @Override
       public boolean acceptInput(final VirtualFile file) {
-        return (file.isInLocalFileSystem() || file.getFileSystem() instanceof TempFileSystem) &&
-               (file.getLength() / 1024) < ourMaxImageSize
+        return file.isInLocalFileSystem() &&
+               file.getLength() / 1024 < ourMaxImageSize
           ;
       }
     };

platform/lang-impl/src/com/intellij/codeInspection/LossyEncodingInspection.java

@@ -44,7 +44,6 @@ import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.vfs.encoding.ChangeFileEncodingAction;
 import com.intellij.openapi.vfs.encoding.EncodingUtil;
-import com.intellij.openapi.vfs.ex.temp.TempFileSystem;
 import com.intellij.psi.PsiFile;
 import com.intellij.psi.util.PsiUtilBase;
 import com.intellij.util.ArrayUtil;
@@ -98,9 +97,7 @@ public class LossyEncodingInspection extends LocalInspectionTool {
     if (file.getViewProvider().getBaseLanguage() != file.getLanguage()) return null;
     VirtualFile virtualFile = file.getVirtualFile();
     if (virtualFile == null) return null;
-    if (!virtualFile.isInLocalFileSystem()
-        // tests
-        && virtualFile.getFileSystem() != TempFileSystem.getInstance()) return null;
+    if (!virtualFile.isInLocalFileSystem()) return null;
     String text = file.getText();
     Charset charset = LoadTextUtil.extractCharsetFromFileContent(file.getProject(), virtualFile, text);
 

platform/platform-impl/src/com/intellij/openapi/vfs/ex/temp/TempFileSystem.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2012 JetBrains s.r.o.
+ * Copyright 2000-2013 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.
@@ -21,13 +21,14 @@ import com.intellij.openapi.util.io.BufferExposingByteArrayInputStream;
 import com.intellij.openapi.util.io.FileAttributes;
 import com.intellij.openapi.vfs.VfsUtilCore;
 import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.openapi.vfs.impl.local.LocalFileSystemBase;
 import com.intellij.openapi.vfs.newvfs.ManagingFS;
-import com.intellij.openapi.vfs.newvfs.NewVirtualFileSystem;
 import com.intellij.openapi.vfs.newvfs.RefreshQueue;
 import com.intellij.openapi.vfs.newvfs.VfsImplUtil;
 import com.intellij.openapi.vfs.newvfs.impl.FakeVirtualFile;
 import com.intellij.openapi.vfs.newvfs.persistent.FSRecords;
 import com.intellij.util.ArrayUtil;
+import com.intellij.util.IncorrectOperationException;
 import com.intellij.util.LocalTimeCounter;
 import org.jetbrains.annotations.NonNls;
 import org.jetbrains.annotations.NotNull;
@@ -35,12 +36,14 @@ import org.jetbrains.annotations.Nullable;
 
 import java.io.*;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
+import java.util.Set;
 
 /**
  * @author max
  */
-public class TempFileSystem extends NewVirtualFileSystem {
+public class TempFileSystem extends LocalFileSystemBase {
   private final FSItem myRoot = new FSDir(null, "/");
 
   public static TempFileSystem getInstance() {
@@ -180,7 +183,7 @@ public class TempFileSystem extends NewVirtualFileSystem {
   }
 
   @Override
-  public void setTimeStamp(@NotNull final VirtualFile file, final long timeStamp) throws IOException {
+  public void setTimeStamp(@NotNull final VirtualFile file, final long timeStamp) {
     final FSItem fsItem = convert(file);
     assert fsItem != null;
 
@@ -370,4 +373,28 @@ public class TempFileSystem extends NewVirtualFileSystem {
     final long length = item instanceof FSFile ? ((FSFile)item).myContent.length : 0;
     return new FileAttributes(item.isDirectory(), false, false, false, length, item.myTimestamp, item.myWritable);
   }
+
+  @NotNull
+  @Override
+  public Set<WatchRequest> addRootsToWatch(@NotNull Collection<String> rootPaths, boolean watchRecursively) {
+    throw new IncorrectOperationException();
+  }
+
+  @Override
+  public void removeWatchedRoots(@NotNull Collection<WatchRequest> watchRequests) {
+    throw new IncorrectOperationException();
+  }
+
+  @Override
+  public Set<WatchRequest> replaceWatchedRoots(@NotNull Collection<WatchRequest> watchRequests,
+                                               @Nullable Collection<String> recursiveRoots,
+                                               @Nullable Collection<String> flatRoots) {
+    throw new IncorrectOperationException();
+  }
+
+  @Nullable
+  @Override
+  protected String normalize(@NotNull String path) {
+    return path;
+  }
 }

platform/testFramework/src/com/intellij/testFramework/PlatformTestUtil.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2012 JetBrains s.r.o.
+ * Copyright 2000-2013 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.
@@ -44,6 +44,7 @@ import com.intellij.openapi.vfs.LocalFileSystem;
 import com.intellij.openapi.vfs.VfsUtilCore;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.vfs.VirtualFileFilter;
+import com.intellij.openapi.vfs.ex.temp.TempFileSystem;
 import com.intellij.util.Alarm;
 import com.intellij.util.ArrayUtil;
 import com.intellij.util.ThrowableRunnable;
@@ -608,13 +609,14 @@ public class PlatformTestUtil {
     FileDocumentManager.getInstance().saveAllDocuments();
 
     VirtualFile[] childrenAfter = dirAfter.getChildren();
-    if (dirAfter.isInLocalFileSystem()) {
+
+    if (dirAfter.isInLocalFileSystem() && dirAfter.getFileSystem() != TempFileSystem.getInstance()) {
       File[] ioAfter = new File(dirAfter.getPath()).listFiles();
       shallowCompare(childrenAfter, ioAfter);
     }
 
     VirtualFile[] childrenBefore = dirBefore.getChildren();
-    if (dirBefore.isInLocalFileSystem()) {
+    if (dirBefore.isInLocalFileSystem() && dirBefore.getFileSystem() != TempFileSystem.getInstance()) {
       File[] ioBefore = new File(dirBefore.getPath()).listFiles();
       shallowCompare(childrenBefore, ioBefore);
     }

xml/impl/src/com/intellij/html/index/Html5CustomAttributesIndex.java

@@ -25,7 +25,6 @@ import com.intellij.openapi.fileTypes.FileTypeManager;
 import com.intellij.openapi.fileTypes.LanguageFileType;
 import com.intellij.openapi.fileTypes.StdFileTypes;
 import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.openapi.vfs.ex.temp.TempFileSystem;
 import com.intellij.psi.tree.IElementType;
 import com.intellij.psi.xml.XmlTokenType;
 import com.intellij.util.containers.HashMap;
@@ -97,11 +96,7 @@ public class Html5CustomAttributesIndex extends ScalarIndexExtension<String> {
     return new DefaultFileTypeSpecificInputFilter(StdFileTypes.HTML, StdFileTypes.XHTML) {
       @Override
       public boolean acceptInput(final VirtualFile file) {
-        if (!file.isInLocalFileSystem() && !(file.getFileSystem() instanceof TempFileSystem)) {
-          return false;
-        }
-
-        return true;
+        return file.isInLocalFileSystem();
       }
     };
   }