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    
017    package org.jetbrains.jet.lang.psi;
018    
019    import com.intellij.lang.ASTNode;
020    import com.intellij.psi.tree.IElementType;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.annotations.Nullable;
023    import org.jetbrains.jet.lexer.JetTokens;
024    
025    public 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    }