python/src/com/jetbrains/python/psi/impl/PyExpressionCodeFragmentImpl.java

/*
 * 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.
 * 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.jetbrains.python.psi.impl;

import com.intellij.openapi.fileTypes.FileTypeManager;
import com.intellij.openapi.project.Project;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiManager;
import com.intellij.psi.SingleRootFileViewProvider;
import com.intellij.psi.impl.PsiManagerEx;
import com.intellij.psi.impl.file.impl.FileManager;
import com.intellij.psi.impl.source.tree.FileElement;
import com.intellij.testFramework.LightVirtualFile;
import com.jetbrains.python.psi.PyExpressionCodeFragment;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;

/**
 * clone of JSExpressionCodeFragment
 */
public class PyExpressionCodeFragmentImpl extends PyFileImpl implements PyExpressionCodeFragment {
  private PsiElement myContext;
  private boolean myPhysical;
  private FileViewProvider myViewProvider;

  public PyExpressionCodeFragmentImpl(Project project, @NonNls String name, CharSequence text, boolean isPhysical) {
    super(((PsiManagerEx)PsiManager.getInstance(project)).getFileManager().createFileViewProvider(
            new LightVirtualFile(name, FileTypeManager.getInstance().getFileTypeByFileName(name), text), isPhysical)
    );
    myPhysical = isPhysical;
    ((SingleRootFileViewProvider)getViewProvider()).forceCachedPsi(this);
  }

  protected PyExpressionCodeFragmentImpl clone() {
    final PyExpressionCodeFragmentImpl clone = (PyExpressionCodeFragmentImpl)cloneImpl((FileElement)calcTreeElement().clone());
    clone.myPhysical = false;
    clone.myOriginalFile = this;
    FileManager fileManager = ((PsiManagerEx)getManager()).getFileManager();
    SingleRootFileViewProvider cloneViewProvider = (SingleRootFileViewProvider)fileManager.createFileViewProvider(new LightVirtualFile(getName(), getLanguage(), getText()), false);
    cloneViewProvider.forceCachedPsi(clone);
    clone.myViewProvider = cloneViewProvider;
    return clone;
  }

  public PsiElement getContext() {
    return myContext;
  }

  @NotNull
  public FileViewProvider getViewProvider() {
    if(myViewProvider != null) return myViewProvider;
    return super.getViewProvider();
  }

  public boolean isValid() {
    if (!super.isValid()) return false;
    if (myContext != null && !myContext.isValid()) return false;
    return true;
  }

  public boolean isPhysical() {
    return myPhysical;
  }

  public void setContext(PsiElement context) {
    myContext = context;
  }

}