java/java-impl/src/com/intellij/psi/impl/compiled/ClassFileDecompiler.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /*
  18  * @author max
  19  */
  20 package com.intellij.psi.impl.compiled;
  21
  22 import com.intellij.openapi.application.ApplicationManager;
  23 import com.intellij.openapi.fileTypes.BinaryFileDecompiler;
  24 import com.intellij.openapi.fileTypes.StdFileTypes;
  25 import com.intellij.openapi.fileTypes.ContentBasedClassFileProcessor;
  26 import com.intellij.openapi.project.Project;
  27 import com.intellij.openapi.project.ProjectManager;
  28 import com.intellij.openapi.project.ex.ProjectManagerEx;
  29 import com.intellij.openapi.vfs.VirtualFile;
  30 import com.intellij.openapi.extensions.Extensions;
  31 import com.intellij.psi.PsiManager;
  32 import org.jetbrains.annotations.NotNull;
  33
  34 public class ClassFileDecompiler implements BinaryFileDecompiler {
  35   @NotNull
  36   public CharSequence decompile(final VirtualFile file) {
  37     assert file.getFileType() == StdFileTypes.CLASS;
  38
  39     final Project project;
  40     if (ApplicationManager.getApplication().isUnitTestMode()) {
  41       project = ((ProjectManagerEx)ProjectManager.getInstance()).getCurrentTestProject();
  42       assert project != null;
  43     }
  44     else {
  45       final Project[] projects = ProjectManager.getInstance().getOpenProjects();
  46       if (projects.length == 0) return "";
  47       project = projects[0];
  48     }
  49
  50     final ContentBasedClassFileProcessor[] processors = Extensions.getExtensions(ContentBasedClassFileProcessor.EP_NAME);
  51     for (ContentBasedClassFileProcessor processor : processors) {
  52       if (processor.isApplicable(project, file)) {
  53         return processor.obtainFileText(project, file);
  54       }
  55     }
  56
  57     return ClsFileImpl.decompile(PsiManager.getInstance(project), file);
  58   }
  59 }