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.stubs.elements;
018    
019    import com.intellij.lang.ASTNode;
020    import com.intellij.psi.PsiElement;
021    import com.intellij.psi.stubs.IStubElementType;
022    import com.intellij.psi.stubs.StubElement;
023    import com.intellij.psi.util.PsiTreeUtil;
024    import org.jetbrains.annotations.NonNls;
025    import org.jetbrains.annotations.NotNull;
026    import org.jetbrains.jet.lang.psi.*;
027    import org.jetbrains.jet.plugin.JetLanguage;
028    
029    public abstract class JetStubElementType<StubT extends StubElement, PsiT extends PsiElement> extends IStubElementType<StubT, PsiT> {
030    
031        public JetStubElementType(@NotNull @NonNls String debugName) {
032            super(debugName, JetLanguage.INSTANCE);
033        }
034    
035        public abstract PsiT createPsiFromAst(@NotNull ASTNode node);
036    
037        @NotNull
038        @Override
039        public String getExternalId() {
040            return "jet." + toString();
041        }
042    
043        @Override
044        public boolean shouldCreateStub(ASTNode node) {
045            PsiElement psi = node.getPsi();
046    
047            // Do not create stubs inside function literals
048            if (PsiTreeUtil.getParentOfType(psi, JetFunctionLiteral.class) != null) {
049                return false;
050            }
051    
052            // Don't create stubs if declaration is inside function or property accessor with block
053            JetBlockExpression blockExpression = PsiTreeUtil.getParentOfType(psi, JetBlockExpression.class);
054            if (blockExpression != null) {
055                return false;
056            }
057    
058            // Don't create stubs if declaration is inside other declaration with expression initializer
059            @SuppressWarnings("unchecked") JetWithExpressionInitializer withInitializer =
060                    PsiTreeUtil.getParentOfType(psi, JetWithExpressionInitializer.class, true, JetBlockExpression.class);
061            if (withInitializer != null) {
062                JetExpression initializer = withInitializer.getInitializer();
063                if (PsiTreeUtil.isAncestor(initializer, psi, true)) {
064                    return false;
065                }
066            }
067    
068            // Don't create stubs if declaration is inside property delegate
069            @SuppressWarnings("unchecked") JetPropertyDelegate delegate =
070                    PsiTreeUtil.getParentOfType(psi, JetPropertyDelegate.class, true, JetBlockExpression.class);
071            if (delegate != null) {
072                JetExpression delegateExpression = delegate.getExpression();
073                if (PsiTreeUtil.isAncestor(delegateExpression, psi, true)) {
074                    return false;
075                }
076            }
077    
078            return super.shouldCreateStub(node);
079        }
080    }