/*
 * Copyright 2000-2016 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.light;

import com.intellij.lang.java.JavaLanguage;
import com.intellij.psi.*;
import com.intellij.psi.javadoc.PsiDocComment;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * @author Maxim.Medvedev
 */
public class LightFieldBuilder extends LightVariableBuilder<LightFieldBuilder> implements PsiField {
  private PsiClass myContainingClass;
  private PsiExpression myInitializer;
  private PsiDocComment myDocComment;
  private boolean myIsDeprecated;

  public LightFieldBuilder(@NotNull String name, @NotNull String type, @NotNull PsiElement navigationElement) {
    super(name, JavaPsiFacade.getElementFactory(navigationElement.getProject()).createTypeFromText(type, navigationElement),
          navigationElement);
  }

  public LightFieldBuilder(@NotNull String name, @NotNull PsiType type, @NotNull PsiElement navigationElement) {
    super(name, type, navigationElement);
  }

  public LightFieldBuilder(PsiManager manager, @NotNull String name, @NotNull PsiType type) {
    super(manager, name, type, JavaLanguage.INSTANCE);
  }

  public LightFieldBuilder setContainingClass(PsiClass psiClass) {
    myContainingClass = psiClass;
    return this;
  }

  @Override
  public void accept(@NotNull PsiElementVisitor visitor) {
    if (visitor instanceof JavaElementVisitor) {
      ((JavaElementVisitor)visitor).visitField(this);
    }
    else {
      visitor.visitElement(this);
    }
  }
  @Override
  public void setInitializer(@Nullable PsiExpression initializer) throws IncorrectOperationException {
    myInitializer = initializer;
  }

  @Override
  public PsiExpression getInitializer() {
    return myInitializer;
  }

  @Override
  public boolean hasInitializer() {
    return myInitializer != null;
  }

  @Override
  public PsiDocComment getDocComment() {
    return myDocComment;
  }

  public LightFieldBuilder setDocComment(PsiDocComment docComment) {
    myDocComment = docComment;
    return this;
  }

  @Override
  public boolean isDeprecated() {
    return myIsDeprecated;
  }

  public LightFieldBuilder setIsDeprecated(boolean isDeprecated) {
    myIsDeprecated = isDeprecated;
    return this;
  }

  @Override
  public PsiClass getContainingClass() {
    return myContainingClass;
  }

  @Override
  public PsiElement getParent() {
    return getContainingClass();
  }

  @Override
  public boolean isEquivalentTo(PsiElement another) {
    if (!(another instanceof PsiField)) return false;
    if (!((PsiField)another).getName().equals(getName())) return false;
    if (hasModifierProperty(PsiModifier.STATIC) != ((PsiField)another).hasModifierProperty(PsiModifier.STATIC)) return false;
    final PsiClass containingClass = getContainingClass();
    final PsiClass anotherClass = ((PsiField)another).getContainingClass();
    return containingClass == null && anotherClass == null || getManager().areElementsEquivalent(containingClass, anotherClass);
  }
}
