001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.lang.psi;
018
019import com.intellij.lang.ASTNode;
020import com.intellij.psi.tree.IElementType;
021import org.jetbrains.annotations.NotNull;
022import org.jetbrains.annotations.Nullable;
023import org.jetbrains.jet.lexer.JetTokens;
024
025public class JetImportDirective extends JetElementImpl {
026    public JetImportDirective(@NotNull ASTNode node) {
027        super(node);
028    }
029
030    @Override
031    public void accept(@NotNull JetVisitorVoid visitor) {
032        visitor.visitImportDirective(this);
033    }
034
035    @Override
036    public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
037        return visitor.visitImportDirective(this, data);
038    }
039
040    public boolean isAbsoluteInRootNamespace() {
041        return findChildByType(JetTokens.PACKAGE_KEYWORD) != null;
042    }
043
044    @Nullable @IfNotParsed
045    public JetExpression getImportedReference() {
046        return findChildByClass(JetExpression.class);
047    }
048
049    @Nullable
050    public ASTNode getAliasNameNode() {
051        boolean asPassed = false;
052        ASTNode childNode = getNode().getFirstChildNode();
053        while (childNode != null) {
054            IElementType tt = childNode.getElementType();
055            if (tt == JetTokens.AS_KEYWORD) asPassed = true;
056            if (asPassed && tt == JetTokens.IDENTIFIER) {
057                return childNode;
058            }
059
060            childNode = childNode.getTreeNext();
061        }
062        return null;
063    }
064
065    @Nullable
066    public String getAliasName() {
067        ASTNode aliasNameNode = getAliasNameNode();
068        if (aliasNameNode == null) {
069            return null;
070        }
071        return aliasNameNode.getText();
072    }
073
074    public boolean isAllUnder() {
075        return getNode().findChildByType(JetTokens.MUL) != null;
076    }
077}