java/java-psi-impl/src/com/intellij/psi/impl/source/PsiReferenceListImpl.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.intellij.psi.impl.source;

import com.intellij.lang.ASTNode;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.psi.*;
import com.intellij.psi.impl.java.stubs.PsiClassReferenceListStub;
import com.intellij.psi.impl.source.tree.JavaElementType;
import com.intellij.psi.stubs.IStubElementType;
import com.intellij.psi.tree.IElementType;
import org.jetbrains.annotations.NotNull;

/**
 * @author max
 */
public class PsiReferenceListImpl extends JavaStubPsiElement<PsiClassReferenceListStub> implements PsiReferenceList {
  private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.PsiReferenceListImpl");

  public PsiReferenceListImpl(PsiClassReferenceListStub stub, IStubElementType nodeType) {
    super(stub, nodeType);
  }

  public PsiReferenceListImpl(ASTNode node) {
    super(node);
  }

  @Override
  @NotNull
  public PsiJavaCodeReferenceElement[] getReferenceElements() {
    return calcTreeElement().getChildrenAsPsiElements(JavaElementType.JAVA_CODE_REFERENCE, PsiJavaCodeReferenceElement.ARRAY_FACTORY);
  }

  @Override
  @NotNull
  public PsiClassType[] getReferencedTypes() {
    PsiClassReferenceListStub stub = getStub();
    if (stub != null) {
      return stub.getReferencedTypes();
    }

    PsiJavaCodeReferenceElement[] refs = getReferenceElements();
    PsiElementFactory factory = JavaPsiFacade.getInstance(getProject()).getElementFactory();
    PsiClassType[] types = new PsiClassType[refs.length];
    for (int i = 0; i < types.length; i++) {
      types[i] = factory.createType(refs[i]);
    }

    return types;
  }

  @Override
  public Role getRole() {
    IElementType type = getElementType();
    if (type == JavaElementType.EXTENDS_LIST) {
      return Role.EXTENDS_LIST;
    }
    else if (type == JavaElementType.IMPLEMENTS_LIST) {
      return Role.IMPLEMENTS_LIST;
    }
    else if (type == JavaElementType.THROWS_LIST) {
      return Role.THROWS_LIST;
    }
    else if (type == JavaElementType.EXTENDS_BOUND_LIST) {
      return Role.EXTENDS_BOUNDS_LIST;
    }

    LOG.error("Unknown element type:" + type);
    return null;
  }

  @Override
  public void accept(@NotNull PsiElementVisitor visitor) {
    if (visitor instanceof JavaElementVisitor) {
      ((JavaElementVisitor)visitor).visitReferenceList(this);
    }
    else {
      visitor.visitElement(this);
    }
  }

  public String toString() {
    return getElementType() == JavaElementType.EXTENDS_BOUND_LIST ? "PsiElement(EXTENDS_BOUND_LIST)"
                                                                  : "PsiReferenceList"; // todo[r.sh] fix test data
  }
}