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/*
 * Copyright 2010-2013 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 org.jetbrains.jet.lang.psi;

import com.intellij.lang.ASTNode;
import com.intellij.psi.PsiElement;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.jet.JetNodeType;

import static org.jetbrains.jet.lang.psi.PsiPackage.JetPsiFactory;

public abstract class JetExpressionImpl extends JetElementImpl implements JetExpression {
    public JetExpressionImpl(@NotNull ASTNode node) {
        super(node);
    }

    @Override
    public  R accept(@NotNull JetVisitor visitor, D data) {
        return visitor.visitExpression(this, data);
    }

    protected JetExpression findExpressionUnder(JetNodeType type) {
        JetContainerNode containerNode = (JetContainerNode) findChildByType(type);
        if (containerNode == null) return null;

        return containerNode.findChildByClass(JetExpression.class);
    }

    //NOTE: duplicate with JetExpressionImplStub
    @NotNull
    @Override
    public PsiElement replace(@NotNull PsiElement newElement) throws IncorrectOperationException {
        PsiElement parent = getParent();
        if (parent instanceof JetExpression && newElement instanceof JetExpression &&
            JetPsiUtil.areParenthesesNecessary((JetExpression) newElement, this, (JetExpression) parent)) {
            return super.replace(JetPsiFactory(this).createExpression("(" + newElement.getText() + ")"));
        }
        return super.replace(newElement);
    }
}