/*
* Copyright 2010-2015 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 org.jetbrains.kotlin.load.java.structure.impl;
import com.intellij.psi.PsiAnnotation;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiJavaCodeReferenceElement;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.load.java.structure.JavaAnnotation;
import org.jetbrains.kotlin.load.java.structure.JavaAnnotationArgument;
import org.jetbrains.kotlin.load.java.structure.JavaClass;
import org.jetbrains.kotlin.name.ClassId;
import org.jetbrains.kotlin.name.FqName;
import org.jetbrains.kotlin.name.Name;
import java.util.Collection;
import static org.jetbrains.kotlin.load.java.structure.impl.JavaElementCollectionFromPsiArrayUtil.namedAnnotationArguments;
public class JavaAnnotationImpl extends JavaElementImpl<PsiAnnotation> implements JavaAnnotation {
public JavaAnnotationImpl(@NotNull PsiAnnotation psiAnnotation) {
super(psiAnnotation);
}
@Override
@NotNull
public Collection<JavaAnnotationArgument> getArguments() {
return namedAnnotationArguments(getPsi().getParameterList().getAttributes());
}
@Override
@Nullable
public ClassId getClassId() {
PsiClass resolved = resolvePsi();
if (resolved != null) return computeClassId(resolved);
// External annotations do not have PSI behind them,
// so we can only heuristically reconstruct annotation class ids from qualified names
String qualifiedName = getPsi().getQualifiedName();
if (qualifiedName != null) return ClassId.topLevel(new FqName(qualifiedName));
return null;
}
@Nullable
@Override
public JavaClass resolve() {
PsiClass resolved = resolvePsi();
return resolved == null ? null : new JavaClassImpl(resolved);
}
@Nullable
private static ClassId computeClassId(@NotNull PsiClass psiClass) {
PsiClass container = psiClass.getContainingClass();
if (container != null) {
ClassId parentClassId = computeClassId(container);
String name = psiClass.getName();
return parentClassId == null || name == null ? null : parentClassId.createNestedClassId(Name.identifier(name));
}
String fqName = psiClass.getQualifiedName();
return fqName == null ? null : ClassId.topLevel(new FqName(fqName));
}
@Nullable
private PsiClass resolvePsi() {
PsiJavaCodeReferenceElement referenceElement = getPsi().getNameReferenceElement();
if (referenceElement == null) return null;
PsiElement resolved = referenceElement.resolve();
return resolved instanceof PsiClass ? (PsiClass) resolved : null;
}
}