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.google.common.collect.Lists;
020    import com.intellij.lang.ASTNode;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.annotations.Nullable;
023    import org.jetbrains.jet.JetNodeTypes;
024    import org.jetbrains.jet.lexer.JetTokens;
025    
026    import java.util.Collections;
027    import java.util.List;
028    
029    public class JetUserType extends JetTypeElement {
030        public JetUserType(@NotNull ASTNode node) {
031            super(node);
032        }
033    
034        public boolean isAbsoluteInRootPackage() {
035            return findChildByType(JetTokens.PACKAGE_KEYWORD) != null;
036        }
037    
038        @Override
039        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
040            return visitor.visitUserType(this, data);
041        }
042    
043        public JetTypeArgumentList getTypeArgumentList() {
044            return (JetTypeArgumentList) findChildByType(JetNodeTypes.TYPE_ARGUMENT_LIST);
045        }
046    
047        @NotNull
048        public List<JetTypeProjection> getTypeArguments() {
049            // TODO: empty elements in PSI
050            JetTypeArgumentList typeArgumentList = getTypeArgumentList();
051            return typeArgumentList == null ? Collections.<JetTypeProjection>emptyList() : typeArgumentList.getArguments();
052        }
053    
054        @NotNull
055        @Override
056        public List<JetTypeReference> getTypeArgumentsAsTypes() {
057            List<JetTypeReference> result = Lists.newArrayList();
058            for (JetTypeProjection projection : getTypeArguments()) {
059                result.add(projection.getTypeReference());
060            }
061            return result;
062        }
063    
064        @Nullable @IfNotParsed
065        public JetSimpleNameExpression getReferenceExpression() {
066            return (JetSimpleNameExpression) findChildByType(JetNodeTypes.REFERENCE_EXPRESSION);
067        }
068    
069        @Nullable
070        public JetUserType getQualifier() {
071            return (JetUserType) findChildByType(JetNodeTypes.USER_TYPE);
072        }
073    
074        @Nullable
075        public String getReferencedName() {
076            JetSimpleNameExpression referenceExpression = getReferenceExpression();
077            return referenceExpression == null ? null : referenceExpression.getReferencedName();
078        }
079    }