001 /*
002 * Copyright 2010-2015 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.kotlin.psi;
018
019 import com.intellij.extapi.psi.StubBasedPsiElementBase;
020 import com.intellij.lang.ASTNode;
021 import com.intellij.lang.Language;
022 import com.intellij.psi.*;
023 import com.intellij.psi.impl.source.resolve.reference.ReferenceProvidersRegistry;
024 import com.intellij.psi.stubs.IStubElementType;
025 import com.intellij.psi.stubs.StubElement;
026 import com.intellij.util.IncorrectOperationException;
027 import org.jetbrains.annotations.NotNull;
028 import org.jetbrains.kotlin.idea.KotlinLanguage;
029 import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementType;
030
031 import java.util.Arrays;
032 import java.util.List;
033
034 public class KtElementImplStub<T extends StubElement<?>> extends StubBasedPsiElementBase<T>
035 implements KtElement, StubBasedPsiElement<T> {
036 public KtElementImplStub(@NotNull T stub, @NotNull IStubElementType nodeType) {
037 super(stub, nodeType);
038 }
039
040 public KtElementImplStub(@NotNull ASTNode node) {
041 super(node);
042 }
043
044 @NotNull
045 @Override
046 public Language getLanguage() {
047 return KotlinLanguage.INSTANCE;
048 }
049
050 @Override
051 public String toString() {
052 return getElementType().toString();
053 }
054
055 @Override
056 public final void accept(@NotNull PsiElementVisitor visitor) {
057 if (visitor instanceof KtVisitor) {
058 accept((KtVisitor) visitor, null);
059 }
060 else {
061 visitor.visitElement(this);
062 }
063 }
064
065 @NotNull
066 @Override
067 public KtFile getContainingKtFile() {
068 PsiFile file = getContainingFile();
069 assert file instanceof KtFile : "KtElement not inside KtFile: " + file + " " + (file.isValid() ? file.getText() : "<invalid>");
070 return (KtFile) file;
071 }
072
073 @Override
074 public <D> void acceptChildren(@NotNull KtVisitor<Void, D> visitor, D data) {
075 PsiElement child = getFirstChild();
076 while (child != null) {
077 if (child instanceof KtElement) {
078 ((KtElement) child).accept(visitor, data);
079 }
080 child = child.getNextSibling();
081 }
082 }
083
084 @Override
085 public <R, D> R accept(@NotNull KtVisitor<R, D> visitor, D data) {
086 return visitor.visitKtElement(this, data);
087 }
088
089 @Override
090 public void delete() throws IncorrectOperationException {
091 KtElementUtilsKt.deleteSemicolon(this);
092 super.delete();
093 }
094
095 @Override
096 public PsiReference getReference() {
097 PsiReference[] references = getReferences();
098 if (references.length == 1) return references[0];
099 else return null;
100 }
101
102 @NotNull
103 @Override
104 public PsiReference[] getReferences() {
105 return ReferenceProvidersRegistry.getReferencesFromProviders(this, PsiReferenceService.Hints.NO_HINTS);
106 }
107
108 @NotNull
109 protected <PsiT extends KtElementImplStub<?>, StubT extends StubElement> List<PsiT> getStubOrPsiChildrenAsList(
110 @NotNull KtStubElementType<StubT, PsiT> elementType
111 ) {
112 return Arrays.asList(getStubOrPsiChildren(elementType, elementType.getArrayFactory()));
113 }
114
115 @NotNull
116 @Override
117 public KtElement getPsiOrParent() {
118 return this;
119 }
120 }