org.jetbrains.jet.lang.psi.JetQualifiedExpression Maven / Gradle / Ivy

Go to download
/*
 * 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 org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.lexer.JetToken;
import org.jetbrains.jet.lexer.JetTokens;

public abstract class JetQualifiedExpression extends JetExpressionImpl {
    public JetQualifiedExpression(@NotNull ASTNode node) {
        super(node);
    }

    @NotNull
    public JetExpression getReceiverExpression() {
        JetExpression left = findChildByClass(JetExpression.class);
        assert left != null;
        return left;
    }

    @Nullable @IfNotParsed
    public JetExpression getSelectorExpression() {
        ASTNode node = getOperationTokenNode();
        while (node != null) {
            PsiElement psi = node.getPsi();
            if (psi instanceof JetExpression) {
                return (JetExpression) psi;
            }
            node = node.getTreeNext();
        }

        return null;
    }
    @NotNull
    public ASTNode getOperationTokenNode() {
        ASTNode operationNode = getNode().findChildByType(JetTokens.OPERATIONS);
        assert operationNode != null;
        return operationNode;
    }

    @NotNull
    public JetToken getOperationSign() {
        return (JetToken) getOperationTokenNode().getElementType();
    }
}