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/*
* Copyright 2006-2012 Dave Griffith, Bas Leijdekkers
*
* 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.siyeh.ig.bugs;
import com.intellij.psi.*;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import com.siyeh.ig.psiutils.TypeUtils;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
public class ReflectionForUnavailableAnnotationInspection extends BaseInspection {
@Override
@NotNull
public String getDisplayName() {
return InspectionGadgetsBundle.message("reflection.for.unavailable.annotation.display.name");
}
@Override
@NotNull
public String buildErrorString(Object... infos) {
return InspectionGadgetsBundle.message("reflection.for.unavailable.annotation.problem.descriptor");
}
@Override
public boolean isEnabledByDefault() {
return true;
}
@Override
public BaseInspectionVisitor buildVisitor() {
return new ReflectionForUnavailableAnnotationVisitor();
}
private static class ReflectionForUnavailableAnnotationVisitor extends BaseInspectionVisitor {
@Override
public void visitMethodCallExpression(@NotNull PsiMethodCallExpression expression) {
super.visitMethodCallExpression(expression);
final PsiReferenceExpression methodExpression = expression.getMethodExpression();
@NonNls final String methodName = methodExpression.getReferenceName();
if (!"isAnnotationPresent".equals(methodName) && !"getAnnotation".equals(methodName)) {
return;
}
final PsiExpressionList argumentList = expression.getArgumentList();
final PsiExpression[] args = argumentList.getExpressions();
if (args.length != 1) {
return;
}
final PsiExpression arg = args[0];
if (arg == null) {
return;
}
if (!(arg instanceof PsiClassObjectAccessExpression)) {
return;
}
final PsiExpression qualifier = methodExpression.getQualifierExpression();
if (!TypeUtils.expressionHasTypeOrSubtype(qualifier, "java.lang.reflect.AnnotatedElement")) {
return;
}
final PsiClassObjectAccessExpression classObjectAccessExpression = (PsiClassObjectAccessExpression)arg;
final PsiTypeElement operand = classObjectAccessExpression.getOperand();
final PsiClassType annotationClassType = (PsiClassType)operand.getType();
final PsiClass annotationClass = annotationClassType.resolve();
if (annotationClass == null) {
return;
}
final PsiModifierList modifierList = annotationClass.getModifierList();
if (modifierList == null) {
return;
}
final PsiAnnotation retentionAnnotation = modifierList.findAnnotation("java.lang.annotation.Retention");
if (retentionAnnotation == null) {
registerError(arg);
return;
}
final PsiAnnotationParameterList parameters = retentionAnnotation.getParameterList();
final PsiNameValuePair[] attributes = parameters.getAttributes();
for (PsiNameValuePair attribute : attributes) {
@NonNls final String name = attribute.getName();
if (name != null && !"value".equals(name)) {
continue;
}
final PsiAnnotationMemberValue value = attribute.getValue();
if (value == null) {
continue;
}
@NonNls final String text = value.getText();
if (!text.contains("RUNTIME")) {
registerError(arg);
return;
}
}
}
}
}
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