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/*
* Copyright 2003-2007 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.codeInspection.ProblemDescriptor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiClassInitializer;
import com.intellij.psi.PsiCodeBlock;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiStatement;
import com.intellij.util.IncorrectOperationException;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import com.siyeh.ig.InspectionGadgetsFix;
import org.jetbrains.annotations.NotNull;
public class EmptyInitializerInspection extends BaseInspection {
@Override
@NotNull
public String getID() {
return "EmptyClassInitializer";
}
@Override
@NotNull
public String getDisplayName() {
return InspectionGadgetsBundle.message(
"empty.class.initializer.display.name");
}
@Override
@NotNull
public String buildErrorString(Object... infos) {
return InspectionGadgetsBundle.message(
"empty.class.initializer.problem.descriptor");
}
@Override
protected InspectionGadgetsFix buildFix(Object... infos) {
return new EmptyInitializerFix();
}
private static class EmptyInitializerFix extends InspectionGadgetsFix {
@Override
@NotNull
public String getFamilyName() {
return getName();
}
@Override
@NotNull
public String getName() {
return InspectionGadgetsBundle.message(
"empty.class.initializer.delete.quickfix");
}
@Override
public void doFix(Project project, ProblemDescriptor descriptor)
throws IncorrectOperationException {
final PsiElement element = descriptor.getPsiElement();
final PsiElement codeBlock = element.getParent();
assert codeBlock != null;
final PsiElement classInitializer = codeBlock.getParent();
assert classInitializer != null;
deleteElement(classInitializer);
}
}
@Override
public BaseInspectionVisitor buildVisitor() {
return new EmptyInitializerVisitor();
}
private static class EmptyInitializerVisitor extends BaseInspectionVisitor {
@Override
public void visitClassInitializer(
@NotNull PsiClassInitializer initializer) {
super.visitClassInitializer(initializer);
final PsiCodeBlock body = initializer.getBody();
if (!codeBlockIsEmpty(body)) {
return;
}
registerClassInitializerError(initializer);
}
private static boolean codeBlockIsEmpty(PsiCodeBlock codeBlock) {
final PsiStatement[] statements = codeBlock.getStatements();
return statements.length == 0;
}
}
}
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