PMD free download for Mac


27 January 2020

Cross-language static code analyzer.


PMD is a source code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth. It supports Java, JavaScript, Apex and Visualforce, PLSQL, Apache Velocity, XML, XSL.

Additionally it includes CPD, the copy-paste-detector. CPD finds duplicated code in Java, C, C++, C#, Groovy, PHP, Ruby, Fortran, JavaScript, PLSQL, Apache Velocity, Scala, Objective C, Matlab, Python, Go, Swift and Apex and Visualforce.

What's new in PMD

Version 6.21.0:
Modelica support:
  • Modelica is a language to model complex physical systems
  • Both PMD and CPD are supported and there are already 3 rules available
  • The PMD Designer supports syntax highlighting for Modelica
  • While the language implementation is quite complete, Modelica support is considered experimental for now. This is to allow us to change the rule API (e.g. the AST classes) slightly and improve the implementation based on your feedback
Simple XML dump of AST:
  • We added a experimental feature to dump the AST of a source file into XML. The XML format is of course PMD specific and language dependent. That XML file can be used to execute (XPath) queries against without PMD. It can also be used as a textual visualization of the AST if you don't want to use the Designer
  • This feature is experimental and might change or even be removed in the future, if it is not
  • useful. A short description how to use it is available under Creating XML dump of the AST
  • Any feedback about it, especially about your use cases, is highly appreciated
Updated Apex Support:
  • The Apex language support has been bumped to version 48 (Spring '20). All new language features are now properly parsed and processed
CPD XML format:
  • The CPD XML output format has been enhanced to also report column information for found duplications in addition to the line information. This allows to display the exact tokens, that are considered duplicate
  • If a CPD language doesn't provide these exact information, then these additional attributes are omitted
Each element in the XML format now has 3 new attributes:
  • attribute endLine
  • attribute beginColumn (if there is column information available)
  • attribute endColumn (if there is column information available)
Modified Rules:
  • The Java rule AvoidLiteralsInIfCondition (java-errorprone) has a new property ignoreExpressions. This property is set by default to true in order to maintain compatibility. If this property is set to false, then literals in more complex expressions are considered as well
  • The Apex rule ApexCSRF (apex-errorprone) has been moved from category
  • "Security" to "Error Prone". The Apex runtime already prevents DML statements from being executed, but only at runtime. So, if you try to do this, you'll get an error at runtime, hence this is error prone. See also the discussion on #2064
  • The Java rule CommentRequired (java-documentation) has a new property classCommentRequirement. This replaces the now deprecated property headerCommentRequirement, since the name was misleading. (File) header comments are not checked, but class comments are
Fixed Issues:
  • apex:
    • [apex] ASTFormalComment should implement ApexNode
  • core:
    • [java] Cyclomatic complexity is misreported (lack of clearing metrics cache)
    • [core] PMD should warn about multiple instances of the same rule in a ruleset
    • [core] ResourceLoader is deprecated and marked as internal but is exposed
    • [core] DocumentFile doesn't preserve newlines
  • doc:
    • [doc] Link broken in pmd documentation for writing Xpath rules
  • java:
    • [java] JavaRuleViolation reports wrong class name
  • java-bestpractices:
    • [java] JUnitAssertionsShouldIncludeMessage - False positive with assertEquals and JUnit5
  • java-codestyle:
    • [java] UnnecessaryLocalBeforeReturn false positive with variable captured by method reference
  • java-documentation:
    • [java] CommentRequired property names are inconsistent
  • java-errorprone:
    • [java] AvoidLiteralsInIfCondition: false negative for expressions
    • [java] InvalidLogMessageFormat does not detect extra parameters when no placeholders
  • java-performance:
    • [java] StringInstatiation: False negative with String-array access
  • plsql:
    • [plsql] In StringLiteral using alternative quoting mechanism single quotes cause parsing errors
    • [plsql] Multiple DDL commands are skipped during parsing
Deprecated APIs:

Internal API:

  • Those APIs are not intended to be used by clients, and will be hidden or removed with PMD 7.0.0
  • You can identify them with the @InternalApi annotation. You'll also get a deprecation warning
  • JavaLanguageHandler
  • JavaLanguageParser
  • JavaDataFlowHandler
  • Implementations of RuleViolationFactory in each language module, eg JavaRuleViolationFactory. See javadoc of RuleViolationFactory
  • Implementations of RuleViolation in each language module, eg JavaRuleViolation. See javadoc of RuleViolation
  • RuleFactory
  • RuleBuilder
  • Constructors of RuleSetFactory, use factory methods from RulesetsFactoryUtils instead
  • getRulesetFactory
  • AbstractApexNode
  • AbstractApexNodeBase, and the related visit methods on ApexParserVisitor and its implementations. Use ApexNode instead, now considers comments too
  • CharStream, JavaCharStream, SimpleCharStream: these are APIs used by our JavaCC implementations and that will be moved/refactored for PMD 7.0.0. They should not be used, extended or implemented directly
  • All classes generated by JavaCC, eg JJTJavaParserState. This includes token classes, which will be replaced with a single implementation, and subclasses of ParseException, whose usages will be replaced by just that superclass

For removal:

  • pmd-core:
    • Many methods on the Node interface
    • and AbstractNode base class. See their javadoc for details
    • Node#isFindBoundary is deprecated for XPath queries
  • pmd-java:
    • AbstractJavaParser
    • AbstractJavaHandler
    • ASTAnyTypeDeclaration.TypeKind
    • ASTAnyTypeDeclaration#getKind
    • JavaQualifiedName
    • ASTCatchStatement#getBlock
    • ASTCompilationUnit#declarationsAreInDefaultPackage
    • JavaQualifiableNode
    • ASTAnyTypeDeclaration#getQualifiedName
    • ASTMethodOrConstructorDeclaration#getQualifiedName
    • ASTLambdaExpression#getQualifiedName
    • and its contents
    • MethodLikeNode
    • Its methods will also be removed from its implementations
    • ASTMethodOrConstructorDeclaration
    • ASTLambdaExpression
    • ASTAnyTypeDeclaration#getImage will be removed. Please use getSimpleName()
    • instead. This affects ASTAnnotationTypeDeclaration#getImage
    • ASTClassOrInterfaceDeclaration#getImage, and
    • ASTEnumDeclaration#getImage
    • Several methods of ASTTryStatement, replacements with other names
    • have been added. This includes the XPath attribute @Finally, replace it with a test for child::FinallyStatement
    • Several methods named getGuardExpressionNode are replaced with getCondition. This affects the
    • following nodes: WhileStatement, DoStatement, ForStatement, IfStatement, AssertStatement, ConditionalExpression
    • ASTYieldStatement will not implement TypeNode
    • anymore come 7.0.0. Test the type of the expression nested within it
External Contributions:
  • [modelica] Initial implementation for PMD - Anatoly Trosinenko
  • [doc] Update the docs on adding a new language - Anatoly Trosinenko
  • [java] CommentRequired: make property names consistent - snuyanzin
  • [modelica] Follow-up fixes for Modelica language module - Anatoly Trosinenko
  • [core] Fix odd logic in test runner - Egor Bredikhin
  • [java] Fix odd logic in AvoidUsingHardCodedIPRule - Egor Bredikhin
  • [modelica] Normalize invalid node ranges - Anatoly Trosinenko
  • [modelica] Fix Javadoc tags - Anatoly Trosinenko
  • [core] CPD: report endLine / column informations for found duplications - Maikel Steneker

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