Package com.puppycrawl.tools.checkstyle.checks.naming

Class ParameterNameCheck

  • All Implemented Interfaces:
    Configurable, Contextualizable
    public class ParameterNameCheck
extends AbstractNameCheck
    Checks that method parameter names conform to a specified pattern. By using accessModifiers property it is possible to specify different formats for methods at different visibility levels.

    To validate catch parameters please use CatchParameterName.

    To validate lambda parameters please use LambdaParameterName.

    • Property accessModifiers - Access modifiers of methods where parameters are checked. Type is com.puppycrawl.tools.checkstyle.checks.naming.AccessModifierOption[]. Default value is public, protected, package, private.
    • Property format - Sets the pattern to match valid identifiers. Type is java.util.regex.Pattern. Default value is "^[a-z][a-zA-Z0-9]*$".
    • Property ignoreOverridden - Allows to skip methods with Override annotation from validation. Type is boolean. Default value is false.

    Parent is com.puppycrawl.tools.checkstyle.TreeWalker

    Violation Message Keys:

    • name.invalidPattern
    Since:
    3.0

    • Constructor Detail

      • ParameterNameCheck

        public ParameterNameCheck()
        Creates a new ParameterNameCheck instance.

    • Method Detail

      • setIgnoreOverridden

        public void setIgnoreOverridden​(boolean ignoreOverridden)
        Setter to allows to skip methods with Override annotation from validation.
        Parameters:
        ignoreOverridden - Flag for skipping methods with Override annotation.
        Since:
        6.12.1

      • setAccessModifiers

        public void setAccessModifiers​(AccessModifierOption... accessModifiers)
        Setter to access modifiers of methods where parameters are checked.
        Parameters:
        accessModifiers - access modifiers of methods which should be checked.
        Since:
        7.5

      • getAcceptableTokens

        public int[] getAcceptableTokens()
        Description copied from class: AbstractCheck
        The configurable token set. Used to protect Checks against malicious users who specify an unacceptable token set in the configuration file. The default implementation returns the check's default tokens.
        Specified by:
        getAcceptableTokens in class AbstractCheck
        Returns:
        the token set this check is designed for.
        See Also:
        TokenTypes

      • mustCheckName

        protected boolean mustCheckName​(DetailAST ast)
        Description copied from class: AbstractNameCheck
        Decides whether the name of an AST should be checked against the format regexp.
        Specified by:
        mustCheckName in class AbstractNameCheck
        Parameters:
        ast - the AST to check.
        Returns:
        true if the IDENT subnode of ast should be checked against the format regexp.

      • matchAccessModifiers

        private boolean matchAccessModifiers​(AccessModifierOption accessModifier)
        Checks whether a method has the correct access modifier to be checked.
        Parameters:
        accessModifier - the access modifier of the method.
        Returns:
        whether the method matches the expected access modifier.

      • isOverriddenMethod

        private static boolean isOverriddenMethod​(DetailAST ast)
        Checks whether a method is annotated with Override annotation.
        Parameters:
        ast - method parameter definition token.
        Returns:
        true if a method is annotated with Override annotation.