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 <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
032            return visitor.visitImportDirective(this, data);
033        }
034    
035        public boolean isAbsoluteInRootPackage() {
036            return findChildByType(JetTokens.PACKAGE_KEYWORD) != null;
037        }
038    
039        @Nullable @IfNotParsed
040        public JetExpression getImportedReference() {
041            return findChildByClass(JetExpression.class);
042        }
043    
044        @Nullable
045        public ASTNode getAliasNameNode() {
046            boolean asPassed = false;
047            ASTNode childNode = getNode().getFirstChildNode();
048            while (childNode != null) {
049                IElementType tt = childNode.getElementType();
050                if (tt == JetTokens.AS_KEYWORD) asPassed = true;
051                if (asPassed && tt == JetTokens.IDENTIFIER) {
052                    return childNode;
053                }
054    
055                childNode = childNode.getTreeNext();
056            }
057            return null;
058        }
059    
060        @Nullable
061        public String getAliasName() {
062            ASTNode aliasNameNode = getAliasNameNode();
063            if (aliasNameNode == null) {
064                return null;
065            }
066            return aliasNameNode.getText();
067        }
068    
069        public boolean isAllUnder() {
070            return getNode().findChildByType(JetTokens.MUL) != null;
071        }
072    }