Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* Copyright 2018 The Error Prone Authors.
*
* 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.time;
import static com.google.errorprone.BugPattern.SeverityLevel.WARNING;
import static com.google.errorprone.matchers.Matchers.allOf;
import static com.google.errorprone.matchers.Matchers.anyOf;
import static com.google.errorprone.matchers.Matchers.instanceMethod;
import static com.google.errorprone.matchers.Matchers.not;
import static com.google.errorprone.matchers.Matchers.packageStartsWith;
import com.google.errorprone.BugPattern;
import com.google.errorprone.VisitorState;
import com.google.errorprone.bugpatterns.BugChecker;
import com.google.errorprone.bugpatterns.BugChecker.MethodInvocationTreeMatcher;
import com.google.errorprone.fixes.SuggestedFix;
import com.google.errorprone.fixes.SuggestedFixes;
import com.google.errorprone.matchers.Description;
import com.google.errorprone.matchers.Matcher;
import com.google.errorprone.matchers.method.MethodMatchers;
import com.google.errorprone.util.ASTHelpers;
import com.sun.source.tree.ExpressionTree;
import com.sun.source.tree.MethodInvocationTree;
/**
* Check for calls to JodaTime's {@code type.withDurationAdded(long, int)} where {@code =
* {Duration,Instant,DateTime}}.
*/
@BugPattern(
summary =
"Use of JodaTime's type.withDurationAdded(long, int) (where = "
+ "{Duration,Instant,DateTime}). Please use "
+ "type.withDurationAdded(Duration.millis(long), int) instead.",
explanation =
"JodaTime's type.withDurationAdded(long, int) is often a source of bugs "
+ "because the units of the parameters are ambiguous. Please use "
+ "type.withDurationAdded(Duration.millis(long), int) instead.",
severity = WARNING)
public final class JodaWithDurationAddedLong extends BugChecker
implements MethodInvocationTreeMatcher {
private static final Matcher MATCHER =
allOf(
anyOf(
instanceMethod()
.onExactClass("org.joda.time.DateTime")
.named("withDurationAdded")
.withParameters("long", "int"),
instanceMethod()
.onExactClass("org.joda.time.Duration")
.named("withDurationAdded")
.withParameters("long", "int"),
instanceMethod()
.onExactClass("org.joda.time.Instant")
.named("withDurationAdded")
.withParameters("long", "int")),
// Allow usage by JodaTime itself
not(packageStartsWith("org.joda.time")));
private static final Matcher DURATION_GET_MILLIS_MATCHER =
MethodMatchers.instanceMethod()
.onDescendantOf("org.joda.time.ReadableDuration")
.named("getMillis");
@Override
public Description matchMethodInvocation(MethodInvocationTree tree, VisitorState state) {
if (!MATCHER.matches(tree, state)) {
return Description.NO_MATCH;
}
String receiver = state.getSourceForNode(ASTHelpers.getReceiver(tree));
// Get the constant scalar, if there is one.
Integer scalar = ASTHelpers.constValue(tree.getArguments().get(1), Integer.class);
SuggestedFix.Builder builder = SuggestedFix.builder();
if (Integer.valueOf(0).equals(scalar)) {
// This is adding zero times a duration to the receiver: we can replace this with just the
// receiver.
builder.replace(tree, receiver);
} else {
ExpressionTree firstArgumentTree = tree.getArguments().get(0);
String firstArgumentReplacement;
if (DURATION_GET_MILLIS_MATCHER.matches(firstArgumentTree, state)) {
// This is passing {@code someDuration.getMillis()} as the parameter. we can replace this
// with {@code someDuration}.
firstArgumentReplacement =
state.getSourceForNode(ASTHelpers.getReceiver(firstArgumentTree));
} else {
// Wrap the long as a Duration.
firstArgumentReplacement =
SuggestedFixes.qualifyType(state, builder, "org.joda.time.Duration")
+ ".millis("
+ state.getSourceForNode(firstArgumentTree)
+ ")";
}
if (Integer.valueOf(1).equals(scalar)) {
// Use plus instead of adding 1 times the duration.
builder.replace(tree, receiver + ".plus(" + firstArgumentReplacement + ")");
} else if (Integer.valueOf(-1).equals(scalar)) {
// Use minus instead of adding -1 times the duration.
builder.replace(tree, receiver + ".minus(" + firstArgumentReplacement + ")");
} else {
builder.replace(firstArgumentTree, firstArgumentReplacement);
}
}
return describeMatch(tree, builder.build());
}
}