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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.lexer.KtTokens;
import org.jetbrains.kotlin.psi.psiUtil.KtPsiUtilKt;

public class KtWhenEntry extends KtElementImpl {
    public KtWhenEntry(@NotNull ASTNode node) {
        super(node);
    }

    public boolean isElse() {
        return getElseKeyword() != null;
    }

    @Nullable
    public PsiElement getElseKeyword() {
        return findChildByType(KtTokens.ELSE_KEYWORD);
    }

    @Nullable
    public KtExpression getExpression() {
        return findChildByClass(KtExpression.class);
    }

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

    @NotNull
    public KtWhenCondition[] getConditions() {
        return findChildrenByClass(KtWhenCondition.class);
    }

    public PsiElement getTrailingComma() {
        return KtPsiUtilKt.getTrailingCommaByClosingElement(getArrow());
    }

    @Nullable
    public PsiElement getArrow() {
        return findChildByType(KtTokens.ARROW);
    }
}