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

Class UnnecessaryImportRule

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.codestyle.UnnecessaryImportRule

All Implemented Interfaces:

AstVisitor, JavaVisitor, Rule, PropertySource

public class UnnecessaryImportRule
extends AbstractJavaRule

Detects unnecessary imports.

For PMD 7 I had hoped this rule could be rewritten to use the symbol table implementation directly instead of reimplementing a symbol table (with less care). This would be good for performance and correctness. Modifying the symbol table chain to track which import is used is hard though, mostly because the API to expose is unclear (we wouldn't want symbol tables to expose a mutable API).

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
UnnecessaryImportRule()

Method Summary

Modifier and Type	Method	Description
Object	visit(ASTAmbiguousName node, Object data)
Object	visit(ASTClassType node, Object data)
Object	visit(ASTCompilationUnit node, Object data)
Object	visit(ASTMethodCall node, Object data)
Object	visit(ASTVariableAccess node, Object data)

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, buildTargetSelector, 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, visitJavaNode

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

UnnecessaryImportRule

public UnnecessaryImportRule()

Method Details

visit

public Object visit(ASTCompilationUnit node,
 Object data)

visit

public Object visit(ASTClassType node,
 Object data)

visit

public Object visit(ASTAmbiguousName node,
 Object data)

visit

public Object visit(ASTMethodCall node,
 Object data)

visit

public Object visit(ASTVariableAccess node,
 Object data)