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/*
* Copyright 2000-2011 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.psi.impl.light;
import com.intellij.lang.Language;
import com.intellij.lang.java.JavaLanguage;
import com.intellij.psi.*;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.List;
/**
* @author Max Medvedev
*/
public class LightReferenceListBuilder extends LightElement implements PsiReferenceList {
private final List<PsiJavaCodeReferenceElement> myRefs = new ArrayList<PsiJavaCodeReferenceElement>();
private PsiJavaCodeReferenceElement[] myCachedRefs = null;
private PsiClassType[] myCachedTypes = null;
private final Role myRole;
private final PsiElementFactory myFactory;
public LightReferenceListBuilder(PsiManager manager, Role role) {
this(manager, JavaLanguage.INSTANCE, role);
}
public LightReferenceListBuilder(PsiManager manager, Language language, Role role) {
super(manager, language);
myRole = role;
myFactory = JavaPsiFacade.getElementFactory(getProject());
}
@Override
public String toString() {
return "light reference list";
}
public void addReference(PsiClass aClass) {
addReference(aClass.getQualifiedName());
}
public void addReference(String qualifiedName) {
final PsiJavaCodeReferenceElement ref = myFactory.createReferenceElementByFQClassName(qualifiedName, getResolveScope());
myRefs.add(ref);
}
public void addReference(PsiClassType type) {
final PsiClass resolved = type.resolve();
if (resolved == null) return;
final PsiJavaCodeReferenceElement ref = myFactory.createReferenceElementByType(type);
myRefs.add(ref);
}
@NotNull
@Override
public PsiJavaCodeReferenceElement[] getReferenceElements() {
if (myCachedRefs == null) {
if (myRefs.isEmpty()) {
myCachedRefs = PsiJavaCodeReferenceElement.EMPTY_ARRAY;
}
else {
myCachedRefs = ContainerUtil.toArray(myRefs, new PsiJavaCodeReferenceElement[myRefs.size()]);
}
}
return myCachedRefs;
}
@NotNull
@Override
public PsiClassType[] getReferencedTypes() {
if (myCachedTypes == null) {
if (myRefs.isEmpty()) {
myCachedTypes = PsiClassType.EMPTY_ARRAY;
}
else {
final int size = myRefs.size();
myCachedTypes = new PsiClassType[size];
for (int i = 0; i < size; i++) {
myCachedTypes[i] = myFactory.createType(myRefs.get(i));
}
}
}
return myCachedTypes;
}
@Override
public Role getRole() {
return myRole;
}
}
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