blob: 2decdc02dee7528d2ddb95783d40791f494f019f [file] [log] [blame]
/*
* Copyright 2006-2007 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.threading;
import com.intellij.psi.*;
import com.intellij.psi.util.PsiTreeUtil;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import org.jetbrains.annotations.NotNull;
public class NotifyWithoutCorrespondingWaitInspection extends BaseInspection {
@Override
@NotNull
public String getDisplayName() {
return InspectionGadgetsBundle.message(
"notify.without.corresponding.wait.display.name");
}
@Override
@NotNull
protected String buildErrorString(Object... infos) {
return InspectionGadgetsBundle.message(
"notify.without.corresponding.wait.problem.descriptor");
}
@Override
public BaseInspectionVisitor buildVisitor() {
return new WaitWithoutCorrespondingNotifyVisitor();
}
private static class WaitWithoutCorrespondingNotifyVisitor
extends BaseInspectionVisitor {
@Override
public void visitMethodCallExpression(
@NotNull PsiMethodCallExpression expression) {
super.visitMethodCallExpression(expression);
if (!ThreadingUtils.isNotifyOrNotifyAllCall(expression)) {
return;
}
final PsiReferenceExpression methodExpression =
expression.getMethodExpression();
final PsiExpression qualifier =
methodExpression.getQualifierExpression();
if (!(qualifier instanceof PsiReferenceExpression)) {
return;
}
final PsiElement referent = ((PsiReference)qualifier).resolve();
if (!(referent instanceof PsiField)) {
return;
}
final PsiField field = (PsiField)referent;
final PsiClass fieldClass = field.getContainingClass();
if (fieldClass == null) {
return;
}
if (!PsiTreeUtil.isAncestor(fieldClass, expression, true)) {
return;
}
if (containsWaitCall(fieldClass, field)) {
return;
}
registerMethodCallError(expression);
}
private static boolean containsWaitCall(
PsiClass fieldClass, PsiField field) {
final ContainsWaitVisitor visitor = new ContainsWaitVisitor(field);
fieldClass.accept(visitor);
return visitor.containsWait();
}
}
private static class ContainsWaitVisitor
extends JavaRecursiveElementVisitor {
private final PsiField target;
private boolean containsWait = false;
ContainsWaitVisitor(PsiField target) {
super();
this.target = target;
}
@Override
public void visitElement(PsiElement element) {
if (containsWait) {
return;
}
super.visitElement(element);
}
@Override
public void visitMethodCallExpression(
PsiMethodCallExpression expression) {
super.visitMethodCallExpression(expression);
if (!ThreadingUtils.isWaitCall(expression)) {
return;
}
final PsiReferenceExpression methodExpression =
expression.getMethodExpression();
final PsiExpression qualifier =
methodExpression.getQualifierExpression();
if (qualifier == null) {
return;
}
if (!(qualifier instanceof PsiReferenceExpression)) {
return;
}
final PsiElement referent = ((PsiReference)qualifier).resolve();
if (referent == null) {
return;
}
if (!target.equals(referent)) {
return;
}
containsWait = true;
}
public boolean containsWait() {
return containsWait;
}
}
}