checkstyle.xml

<!--
  ~ This file is part of Araknemu.
  ~
  ~ Araknemu is free software: you can redistribute it and/or modify
  ~ it under the terms of the GNU Lesser General Public License as published by
  ~ the Free Software Foundation, either version 3 of the License, or
  ~ (at your option) any later version.
  ~
  ~ Araknemu is distributed in the hope that it will be useful,
  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  ~ GNU Lesser General Public License for more details.
  ~
  ~ You should have received a copy of the GNU Lesser General Public License
  ~ along with Araknemu.  If not, see <https://www.gnu.org/licenses/>.
  ~
  ~ Copyright (c) 2017-2021 Vincent Quatrevieux
  -->

<!DOCTYPE module PUBLIC
        "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
        "https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="Checker">
    <module name="TreeWalker">
        <module name="MissingDeprecated" />
        <module name="MissingOverride" />
        <module name="AnnotationLocation" />

        <module name="AvoidNestedBlocks" />
        <module name="EmptyBlock" />
        <module name="EmptyCatchBlock" />
        <module name="LeftCurly">
            <property name="ignoreEnums" value="false" />
        </module>
        <module name="NeedBraces" />
        <module name="RightCurly" />
        <module name="DesignForExtension">
            <!-- Ignore overridden methods ? -->
            <property name="ignoredAnnotations" value="Override" />
        </module>
        <module name="FinalClass" />
        <module name="HideUtilityClassConstructor" />
        <module name="InnerTypeLast" />
        <module name="InterfaceIsType" />
        <module name="MutableException" />
        <module name="OneTopLevelClass" />
        <module name="ThrowsCount">
            <property name="max" value="2" />
        </module>
        <module name="VisibilityModifier">
            <property name="protectedAllowed" value="true" /> <!-- To remove ? Only final protected ? -->
        </module>

        <module name="ArrayTrailingComma" />
<!--        <module name="AvoidDoubleBraceInitialization" />-->
        <module name="CovariantEquals" />
        <module name="DeclarationOrder" />
        <module name="DefaultComesLast" />
        <module name="EmptyStatement" />
        <module name="EqualsAvoidNull" />
        <module name="FinalLocalVariable" />
        <module name="IllegalType" />
        <module name="MultipleVariableDeclarations" />
        <module name="NestedForDepth" />
        <module name="NestedIfDepth" />
        <module name="NestedTryDepth" />
        <module name="NoFinalizer" />
        <module name="OneStatementPerLine" />
        <module name="PackageDeclaration" />
        <module name="SimplifyBooleanExpression" />
        <module name="SimplifyBooleanReturn" />
        <module name="StringLiteralEquality" />
<!--        <module name="UnnecessarySemicolonAfterOuterTypeDeclaration" />--> <!-- No supported -->
        <module name="UnnecessarySemicolonAfterTypeMemberDeclaration" />
        <module name="UnnecessarySemicolonInEnumeration" />

        <module name="AvoidStarImport" />
        <module name="AvoidStaticImport" />
        <module name="RedundantImport" />
        <module name="UnusedImports" />

        <module name="BooleanExpressionComplexity" />
        <module name="CyclomaticComplexity" />
        <module name="JavaNCSS">
            <property name="severity" value="warning"/>
            <property name="classMaximum" value="150" />
        </module>

        <module name="ArrayTypeStyle" />
        <module name="CommentsIndentation" />
        <module name="OuterTypeFilename" />
        <module name="TodoComment">
            <property name="format" value="(TODO:)|(@todo )" />
            <property name="severity" value="info" />
        </module>
        <module name="UncommentedMain">
            <property name="excludedClasses" value="Araknemu" />
        </module>
        <module name="UpperEll" />
<!--        <module name="ClassMemberImpliedModifier" />--> <!-- No supported -->
        <module name="InterfaceMemberImpliedModifier">
            <property name="violateImpliedAbstractMethod" value="false" />
        </module>
        <module name="ModifierOrder" />

        <module name="AbstractClassName" />
        <module name="ClassTypeParameterName" />
        <module name="InterfaceTypeParameterName" />
        <module name="ConstantName">
            <property name="applyToPrivate" value="false" />
        </module>
        <module name="LambdaParameterName">
            <!-- Allow only words or in format a1, a2, ... -->
            <property name="format" value="^[a-z]([0-9]|[a-zA-Z]*)$" />
        </module>
        <module name="LocalFinalVariableName" />
        <module name="LocalVariableName" />
        <module name="MemberName" />
        <module name="MethodName" />
        <module name="MethodTypeParameterName" />
        <module name="PackageName">
            <!-- Allow only lower case word -->
            <property name="format" value="^fr.arakne.utils(.[a-z]+)*$" />
        </module>
        <module name="ParameterName" />
        <module name="StaticVariableName">
            <!-- Allow only words -->
            <property name="format" value="^[a-z][a-zA-Z]*$" />
        </module>
        <module name="TypeName">
            <!-- Allow only words -->
            <property name="format" value="^([A-Z][a-zA-Z]*|Base64)$" />
        </module>

        <module name="AnonInnerLength">
            <property name="max" value="30" />
        </module>
<!--        <module name="LambdaBodyLength" />-->
        <module name="MethodCount">
            <property name="maxTotal" value="30" />
        </module>
        <module name="MethodLength" />
        <module name="OuterTypeNumber">
            <property name="max" value="1" />
        </module>
        <module name="ParameterNumber">
            <property name="max" value="5" />
            <!-- Ignore constructors -->
            <property name="tokens" value="METHOD_DEF" />
        </module>

        <module name="EmptyForInitializerPad" />
        <module name="EmptyForIteratorPad" />
        <module name="GenericWhitespace" />
        <module name="MethodParamPad" />
        <module name="NoLineWrap" />
        <module name="NoWhitespaceAfter">
            <property name="tokens" value="AT, INC, DEC, BNOT, LNOT, DOT, ARRAY_DECLARATOR, INDEX_OP" />
        </module>
        <module name="NoWhitespaceBefore">
            <property name="allowLineBreaks" value="true" />
            <property name="tokens" value="COMMA, SEMI, POST_INC, POST_DEC, DOT, GENERIC_END, ELLIPSIS, METHOD_REF" />
        </module>
        <module name="OperatorWrap">
            <property name="tokens" value="QUESTION, COLON, EQUAL, NOT_EQUAL, DIV, MINUS, STAR, MOD, SR, BSR, GE, GT, SL, LE, LT, BXOR, BOR, LOR, BAND, LAND, TYPE_EXTENSION_AND, LITERAL_INSTANCEOF" />
        </module>
        <module name="ParenPad" />
        <module name="SeparatorWrap">
            <property name="tokens" value="DOT"/>
            <property name="tokens" value="AT"/>
            <property name="tokens" value="METHOD_REF"/>
            <property name="option" value="nl"/>
        </module>
        <module name="SeparatorWrap">
            <property name="tokens" value="COMMA"/>
            <property name="tokens" value="RBRACK"/>
            <property name="tokens" value="ARRAY_DECLARATOR"/>
            <property name="tokens" value="ELLIPSIS"/>
            <property name="option" value="eol"/>
        </module>
<!--        <module name="SingleSpaceSeparator" />--> <!-- Do not handle aligned statements -->
        <module name="TypecastParenPad" />
        <module name="WhitespaceAfter" />
        <module name="WhitespaceAround">
            <property name="allowEmptyMethods" value="true" />
            <property name="allowEmptyLambdas" value="true" />
            <property name="allowEmptyConstructors" value="true" />
        </module>
        <module name="EmptyLineSeparator">
            <property name="allowNoEmptyLineBetweenFields" value="true" />
            <property name="allowMultipleEmptyLinesInsideClassMembers" value="false" />
            <property name="allowMultipleEmptyLines" value="false" />
        </module>

        <module name="JavadocContentLocationCheck" />
        <module name="JavadocMethod">
            <property name="scope" value="public" />
            <property name="allowMissingParamTags" value="true" />
            <property name="allowMissingReturnTag" value="true" />
        </module>
        <module name="MissingJavadocMethod">
            <property name="tokens" value="METHOD_DEF, ANNOTATION_FIELD_DEF" />
        </module>
        <module name="MissingJavadocType" />
        <module name="NonEmptyAtclauseDescription" />
    </module>

    <module name="NewlineAtEndOfFile" />
    <module name="FileLength">
        <property name="max" value="500" />
    </module>
    <module name="FileTabCharacter" />
    <module name="RegexpHeader">
        <property name="headerFile" value="java.header" />
        <property name="multiLines" value="18" />
    </module>
</module>