platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/IntersectionPackageSet.java

/*
 * Copyright 2000-2009 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.psi.search.scope.packageSet;

import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class IntersectionPackageSet extends PackageSetBase {
  private final PackageSet myFirstSet;
  private final PackageSet mySecondSet;

  private String myText;

  public IntersectionPackageSet(PackageSet firstSet, PackageSet secondSet) {
    myFirstSet = firstSet;
    mySecondSet = secondSet;
  }

  @Override
  public boolean contains(VirtualFile file, @NotNull NamedScopesHolder holder) {
    return contains(file, holder.getProject(), holder);
  }

  @Override
  public boolean contains(VirtualFile file, @NotNull Project project, @Nullable NamedScopesHolder holder) {
    if (myFirstSet instanceof PackageSetBase ? ((PackageSetBase)myFirstSet).contains(file, project, holder) : myFirstSet.contains(getPsiFile(file, project), holder)) {
      if (mySecondSet instanceof PackageSetBase ? ((PackageSetBase)mySecondSet).contains(file, project, holder) : mySecondSet.contains(getPsiFile(file, project), holder)) {
        return true;
      }
    }
    return false;
  }

  @Override
  @NotNull
  public PackageSet createCopy() {
    return new IntersectionPackageSet(myFirstSet.createCopy(), mySecondSet.createCopy());
  }

  @Override
  public int getNodePriority() {
    return 2;
  }

  @Override
  @NotNull
  public String getText() {
    if (myText == null) {
      final StringBuilder buf = new StringBuilder();
      boolean needParen = myFirstSet.getNodePriority() > getNodePriority();
      if (needParen) buf.append('(');
      buf.append(myFirstSet.getText());
      if (needParen) buf.append(')');
      buf.append("&&");
      needParen = mySecondSet.getNodePriority() > getNodePriority();
      if (needParen) buf.append('(');
      buf.append(mySecondSet.getText());
      if (needParen) buf.append(')');

      myText = buf.toString();
    }
    return myText;
  }

  public PackageSet getFirstSet() {
    return myFirstSet;
  }

  public PackageSet getSecondSet() {
    return mySecondSet;
  }
}