java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/ExpressionPsiElement.java


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/*
 * Copyright 2000-2014 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.tree.java;

import com.intellij.lang.ASTNode;
import com.intellij.psi.impl.source.tree.*;
import com.intellij.psi.tree.IElementType;
import org.jetbrains.annotations.NotNull;

/**
 * @author max
 */
public class ExpressionPsiElement extends CompositePsiElement {
  @SuppressWarnings("AssignmentToStaticFieldFromInstanceMethod") private final int myHC = CompositePsiElement.ourHC++;

  public ExpressionPsiElement(final IElementType type) {
    super(type);
  }

  @Override
  public void replaceChildInternal(@NotNull ASTNode child, @NotNull TreeElement newElement) {
    if (ElementType.EXPRESSION_BIT_SET.contains(child.getElementType()) &&
        ElementType.EXPRESSION_BIT_SET.contains(newElement.getElementType())) {
      boolean needParenth = ReplaceExpressionUtil.isNeedParenthesis(child, newElement);
      if (needParenth) {
        newElement = JavaSourceUtil.addParenthToReplacedChild(JavaElementType.PARENTH_EXPRESSION, newElement, getManager());
      }
    }
    super.replaceChildInternal(child, newElement);
  }

  @Override
  public final int hashCode() {
    return myHC;
  }
}