/*
* Copyright 2013 Google Inc. All Rights Reserved.
*
* 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.google.errorprone.bugpatterns.testdata;
import java.util.*;
/**
* @author amshali@google.com (Amin Shali)
* @author eaftan@google.com (Eddie Aftandilian)
*/
public class ElementsCountedInLoopNegativeCases {
public int testEnhancedFor(List<Object> iterable) {
int count = 0;
// The following cases are considered negative because they are incrementing the counter by more
// than 1.
for (Object item : iterable) {
count += 2;
}
for (Object item : iterable) {
count = count + 3;
}
for (Object item : iterable) {
count = 2 + count;
}
return count;
}
public int testEnhancedWhileLoop(List<Object> iterable) {
Iterator<Object> it = iterable.iterator();
int count = 0;
// The following case is considered negative because it is incrementing the counter by 2.
while (it.hasNext()) {
count += 2;
}
// 'this' is not an Iterable type.
while (this.hasNext()) {
count += 1;
}
// Complicated while body.
while (it.hasNext()) {
System.err.println("Not so simple body");
count++;
}
return count;
}
public boolean hasNext() {
return true;
}
public double testEnhancedForFloats(List<Object> iterable) {
double count = 0;
// The following cases are considered negative because they are incrementing the counter by a
// float value which is not 1.
for (Object item : iterable) {
count += 2.0;
}
for (Object item : iterable) {
count = count + 3.0;
}
for (Object item : iterable) {
count = 0.1 + count;
}
return count;
}
}