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.PsiElement;
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    public class JetCallableReferenceExpression extends JetExpressionImpl {
027        public JetCallableReferenceExpression(@NotNull ASTNode node) {
028            super(node);
029        }
030    
031        @Nullable
032        public JetTypeReference getTypeReference() {
033            return (JetTypeReference) findChildByType(JetNodeTypes.TYPE_REFERENCE);
034        }
035    
036        @NotNull
037        public PsiElement getDoubleColonTokenReference() {
038            //noinspection ConstantConditions
039            return findChildByType(JetTokens.COLONCOLON);
040        }
041    
042        @NotNull
043        public JetSimpleNameExpression getCallableReference() {
044            PsiElement psi = getDoubleColonTokenReference();
045            while (psi != null) {
046                if (psi instanceof JetSimpleNameExpression) {
047                    return (JetSimpleNameExpression) psi;
048                }
049                psi = psi.getNextSibling();
050            }
051    
052            throw new IllegalStateException("Callable reference simple name shouldn't be parsed to null");
053        }
054    
055        @Override
056        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
057            return visitor.visitCallableReferenceExpression(this, data);
058        }
059    }