Package net.sourceforge.pmd.lang.java.rule.errorprone

Class UselessOperationOnImmutableRule

java.lang.Object

net.sourceforge.pmd.properties.AbstractPropertySource

net.sourceforge.pmd.lang.rule.AbstractRule

net.sourceforge.pmd.lang.java.rule.AbstractJavaRule

net.sourceforge.pmd.lang.java.rule.AbstractJavaRulechainRule

net.sourceforge.pmd.lang.java.rule.errorprone.UselessOperationOnImmutableRule

All Implemented Interfaces:

AstVisitor, JavaVisitor, Rule, PropertySource

public class UselessOperationOnImmutableRule
extends AbstractJavaRulechainRule

An operation on an Immutable object (String, BigDecimal or BigInteger) won't change the object itself. The result of the operation is a new object. Therefore, ignoring the operation result is an error.

Field Summary

Fields inherited from interface net.sourceforge.pmd.lang.rule.Rule

VIOLATION_SUPPRESS_REGEX_DESCRIPTOR, VIOLATION_SUPPRESS_XPATH_DESCRIPTOR

Constructor Summary

Constructors

Constructor	Description
UselessOperationOnImmutableRule()

Method Summary

Modifier and Type	Method	Description
Object	visit(ASTMethodCall node, Object data)

Methods inherited from class net.sourceforge.pmd.lang.java.rule.AbstractJavaRulechainRule

buildTargetSelector, visitJavaNode

Methods inherited from class net.sourceforge.pmd.lang.java.rule.AbstractJavaRule

apply, visitNode

Methods inherited from class net.sourceforge.pmd.lang.rule.AbstractRule

addExample, asCtx, deepCopy, dysfunctionReason, end, equals, getDescription, getExamples, getExternalInfoUrl, getLanguage, getMaximumLanguageVersion, getMessage, getMinimumLanguageVersion, getName, getPriority, getPropertySourceType, getRuleClass, getRuleSetName, getSince, getTargetSelector, hashCode, isDeprecated, setDeprecated, setDescription, setExternalInfoUrl, setLanguage, setMaximumLanguageVersion, setMessage, setMinimumLanguageVersion, setName, setPriority, setRuleClass, setRuleSetName, setSince, start

Methods inherited from class net.sourceforge.pmd.properties.AbstractPropertySource

definePropertyDescriptor, getOverriddenPropertiesByPropertyDescriptor, getOverriddenPropertyDescriptors, getPropertiesByPropertyDescriptor, getProperty, getPropertyDescriptor, getPropertyDescriptors, hasDescriptor, isPropertyOverridden, setProperty

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sourceforge.pmd.lang.ast.AstVisitor

cannotVisit

Methods inherited from interface net.sourceforge.pmd.lang.java.ast.JavaVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from interface net.sourceforge.pmd.properties.PropertySource

definePropertyDescriptor, getOverriddenPropertiesByPropertyDescriptor, getOverriddenPropertyDescriptors, getPropertiesByPropertyDescriptor, getProperty, getPropertyDescriptor, getPropertyDescriptors, hasDescriptor, isPropertyOverridden, setProperty

Methods inherited from interface net.sourceforge.pmd.lang.rule.Rule

initialize

Constructor Details

UselessOperationOnImmutableRule

public UselessOperationOnImmutableRule()

Method Details

visit

public Object visit(ASTMethodCall node,
 Object data)