001    /*
002     * Copyright 2010-2014 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 com.intellij.psi.PsiElement;
022    import com.intellij.psi.stubs.IStubElementType;
023    import org.jetbrains.annotations.NotNull;
024    import org.jetbrains.annotations.Nullable;
025    import org.jetbrains.jet.lang.psi.stubs.PsiJetModifierListStub;
026    import org.jetbrains.jet.lang.psi.stubs.elements.JetStubElementTypes;
027    import org.jetbrains.jet.lexer.JetModifierKeywordToken;
028    import org.jetbrains.jet.lexer.JetToken;
029    
030    import java.util.ArrayList;
031    import java.util.Collections;
032    import java.util.List;
033    
034    public abstract class JetModifierList extends JetElementImplStub<PsiJetModifierListStub> {
035    
036        public JetModifierList(@NotNull PsiJetModifierListStub stub, @NotNull IStubElementType nodeType) {
037            super(stub, nodeType);
038        }
039    
040        public JetModifierList(@NotNull ASTNode node) {
041            super(node);
042        }
043    
044        @Override
045        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
046            return visitor.visitModifierList(this, data);
047        }
048    
049        @NotNull
050        public List<JetAnnotation> getAnnotations() {
051            return getStubOrPsiChildrenAsList(JetStubElementTypes.ANNOTATION);
052        }
053    
054        @NotNull
055        public List<JetAnnotationEntry> getAnnotationEntries() {
056            List<JetAnnotationEntry> entries = getStubOrPsiChildrenAsList(JetStubElementTypes.ANNOTATION_ENTRY);
057            List<JetAnnotationEntry> answer = entries.isEmpty() ? null : Lists.newArrayList(entries);
058            for (JetAnnotation annotation : getAnnotations()) {
059                if (answer == null) answer = new ArrayList<JetAnnotationEntry>();
060                answer.addAll(annotation.getEntries());
061            }
062            return answer != null ? answer : Collections.<JetAnnotationEntry>emptyList();
063        }
064    
065        public boolean hasModifier(@NotNull JetModifierKeywordToken token) {
066            PsiJetModifierListStub stub = getStub();
067            if (stub != null) {
068                return stub.hasModifier(token);
069            }
070            return getModifierNode(token) != null;
071        }
072    
073        @Nullable
074        public PsiElement getModifier(@NotNull JetModifierKeywordToken token) {
075            return findChildByType(token);
076        }
077    
078        @Nullable
079        public ASTNode getModifierNode(@NotNull JetToken token) {
080            ASTNode node = getNode().getFirstChildNode();
081            while (node != null) {
082                if (node.getElementType() == token) return node;
083                node = node.getTreeNext();
084            }
085            return null;
086        }
087    }