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/*
 * Copyright 2010-2015 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.kotlin.psi;

import com.intellij.lang.ASTNode;
import com.intellij.psi.PsiElement;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.KtNodeTypes;
import org.jetbrains.kotlin.lexer.KtTokens;

public class KtWhenConditionInRange extends KtWhenCondition {
    public KtWhenConditionInRange(@NotNull ASTNode node) {
        super(node);
    }

    public boolean isNegated() {
        return getOperationReference().getNode().findChildByType(KtTokens.NOT_IN) != null;
    }

    @Nullable @IfNotParsed
    public KtExpression getRangeExpression() {
        // Copied from KtBinaryExpression
        ASTNode node = getOperationReference().getNode().getTreeNext();
        while (node != null) {
            PsiElement psi = node.getPsi();
            if (psi instanceof KtExpression) {
                return (KtExpression) psi;
            }
            node = node.getTreeNext();
        }

        return null;
    }

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

    @NotNull
    public KtOperationReferenceExpression getOperationReference() {
        return (KtOperationReferenceExpression) findChildByType(KtNodeTypes.OPERATION_REFERENCE);
    }
}