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checkstyle.xml
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checkstyle.xml
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<!DOCTYPE module PUBLIC
"-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
"https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="Checker">
<!-- Suppresses certain checks. -->
<module name="SuppressionFilter">
<property name="file" value="${checkstyle.suppressions.file}"/>
</module>
<!-- Checks that a package.html file exists for each package. -->
<!-- See http://checkstyle.sf.net/config_javadoc.html#JavadocPackage -->
<module name="JavadocPackage">
<property name="allowLegacy" value="true"/>
</module>
<!-- Checks whether files end with a new line. -->
<!-- See http://checkstyle.sf.net/config_misc.html#NewlineAtEndOfFile -->
<module name="NewlineAtEndOfFile"/>
<!-- Checks that property files contain the same keys. -->
<!-- See http://checkstyle.sf.net/config_misc.html#Translation -->
<module name="Translation"/>
<module name="Header">
<property name="header" value="/*\n * Copyright (c) 2019-2023 Ronald Brill.\n *\n * Licensed under the Apache License, Version 2.0 (the "License");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an "AS IS" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n"/>
</module>
<module name="FileTabCharacter">
<property name="eachLine" value="true"/>
</module>
<module name="LineLength">
<property name="max" value="120"/>
</module>
<!-- Prevent two spaces after @xxxx -->
<module name="RegexpSingleline">
<property name="format" value="\* *@\w* "/>
</module>
<module name="RegexpSingleline">
<property name="format" value="\*\*/"/>
<property name="message" value="Trailing two asterisks."/>
</module>
<module name="RegexpSingleline">
<property name="format" value="\s$"/>
<property name="message" value="Trailing whitespace found."/>
</module>
<module name="RegexpSingleline">
<property name="format" value="\(value = (\w|\d)+\)"/>
<property name="message" value="Unneeded 'value' literal."/>
</module>
<module name="RegexpMultiline">
<property name="format" value="(?<=\r?\n)\r?\n\r?\n"/>
<property name="message" value="Two empty contiguous lines"/>
</module>
<module name="RegexpMultiline">
<property name="format" value="package .*\r?\nimport"/>
<property name="message" value="Package declaration should be followed by an empty line"/>
</module>
<module name="RegexpMultiline">
<property name="format" value="\r?\n\r?\npackage"/>
<property name="message" value="Package declaration should not be preceeded by an empty line"/>
</module>
<module name="RegexpSingleline">
<property name="format" value="@JsxFunction\(\)|@JsxGetter\(\)|@JsxSetter\(\)|@JsxConstructor\(\)|@Alerts\(\)$"/>
<property name="message" value="No need to specify parentheses"/>
</module>
<module name="RegexpSingleline">
<property name="format" value="@Alerts$"/>
<property name="message" value="No need to specify empty @Alerts"/>
</module>
<module name="RegexpSingleline">
<property name="format" value="serialVersionUID"/>
<property name="message" value="No need to specify serialVersionUID"/>
</module>
<module name="RegexpSingleline">
<property name="format" value="\{ "" \}"/>
<property name="message" value="No need for the curly brackets"/>
</module>
<module name="RegexpSingleline">
<property name="format" value="@version"/>
</module>
<module name="RegexpSingleline">
<property name="format" value="^(?!import).*BrowserVersionFeatures\.[A-Z]"/>
<property name="message" value="Use static import for BrowserVersionFeatures"/>
</module>
<!--
at the moment there is a problem with disabling this check for some files
without disabling all RegexpMultiline checks; for this reason this is not active
<module name="RegexpMultiline">
<property name="id" value="sysout"/>
<property name="format" value="System\s*\.\s*(out)|(err)\s*\.\s*print(ln)?\("/>
<property name="message" value="System.out.print/ln found"/>
</module>
-->
<module name="TreeWalker">
<property name="tabWidth" value="4"/>
<module name="AnnotationUseStyle"/>
<module name="LeftCurly">
<property name="option" value="eol"/>
</module>
<module name="RightCurly">
<property name="option" value="alone"/>
<property name="tokens" value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, LITERAL_DO, STATIC_INIT, INSTANCE_INIT"/>
</module>
<module name="ConstantName">
<property name="format" value="log|^[a-zA-Z][a-zA-Z0-9_]*$"/>
</module>
<!-- Checks for Javadoc comments. -->
<!-- See http://checkstyle.sf.net/config_javadoc.html -->
<module name="JavadocMethod">
<property name="accessModifiers" value="public, protected"/>
</module>
<module name="JavadocType">
<property name="scope" value="protected"/>
<property name="authorFormat" value="\S \S"/>
</module>
<module name="JavadocVariable">
<property name="scope" value="protected"/>
</module>
<module name="JavadocStyle">
<property name="scope" value="protected"/>
<property name="checkFirstSentence" value="true"/>
<property name="checkEmptyJavadoc" value="false"/>
<property name="checkHtml" value="true"/>
</module>
<!-- Checks for Naming Conventions. -->
<!-- See http://checkstyle.sf.net/config_naming.html -->
<module name="LocalFinalVariableName"/>
<module name="LocalVariableName"/>
<module name="MethodName">
<property name="format" value="^[a-zA-Z0-9]+|test[A-Z][a-zA-Z0-9_]+$"/>
</module>
<module name="PackageName"/>
<module name="ParameterName"/>
<module name="StaticVariableName">
<property name="format" value="^[A-Z][a-zA-Z0-9_]+_$"/>
</module>
<module name="TypeName"/>
<module name="MemberName">
<property name="format" value="^[a-z][a-zA-Z0-9_]+_$"/>
</module>
<!-- Checks for imports -->
<!-- See http://checkstyle.sf.net/config_imports.html -->
<module name="AvoidStarImport"/>
<module name="IllegalImport"/>
<module name="RedundantImport"/>
<module name="UnusedImports"/>
<!-- Checks for whitespace -->
<!-- See http://checkstyle.sf.net/config_whitespace.html -->
<module name="EmptyForInitializerPad">
<property name="option" value="space"/>
</module>
<module name="EmptyForIteratorPad"/>
<module name="MethodParamPad"/>
<module name="NoWhitespaceAfter"/>
<module name="NoWhitespaceBefore"/>
<module name="OperatorWrap"/>
<module name="ParenPad"/>
<module name="TypecastParenPad"/>
<module name="WhitespaceAfter"/>
<module name="WhitespaceAround"/>
<module name="GenericWhitespace"/>
<module name="ArrayTypeStyle"/>
<!-- Checks for correct basic indentation -->
<!-- See http://checkstyle.sf.net/config_misc.html -->
<module name="Indentation"/>
<!-- Modifier Checks -->
<!-- See http://checkstyle.sf.net/config_modifiers.html -->
<module name="ModifierOrder"/>
<module name="RedundantModifier"/>
<!-- Checks for blocks. You know, those {}'s -->
<!-- See http://checkstyle.sf.net/config_blocks.html -->
<module name="AvoidNestedBlocks"/>
<module name="EmptyBlock">
<property name="option" value="text"/>
</module>
<module name="NeedBraces"/>
<module name="AnnotationUseStyle">
<property name="elementStyle" value="compact"/>
</module>
<!-- Checks for common coding problems -->
<!-- See http://checkstyle.sf.net/config_coding.html -->
<module name="EmptyStatement"/>
<module name="EqualsHashCode"/>
<module name="HiddenField"/>
<module name="IllegalInstantiation"/>
<module name="InnerAssignment"/>
<module name="MissingSwitchDefault"/>
<module name="EqualsAvoidNull"/>
<module name="MultipleVariableDeclarations"/>
<module name="SimplifyBooleanReturn"/>
<module name="SimplifyBooleanExpression"/>
<module name="UnnecessaryParentheses">
<property name="tokens" value="EXPR, IDENT, NUM_DOUBLE, NUM_FLOAT, NUM_INT, NUM_LONG, STRING_LITERAL, LITERAL_NULL, LITERAL_FALSE, LITERAL_TRUE, ASSIGN, BAND_ASSIGN, BOR_ASSIGN, BSR_ASSIGN, BXOR_ASSIGN, DIV_ASSIGN, MINUS_ASSIGN, MOD_ASSIGN, PLUS_ASSIGN, SL_ASSIGN, SR_ASSIGN, STAR_ASSIGN, LAMBDA, TEXT_BLOCK_LITERAL_BEGIN, UNARY_MINUS, UNARY_PLUS, INC, DEC, LNOT, BNOT, POST_INC, POST_DEC"/>
<!-- LAND, LITERAL_INSTANCEOF, GT, LT, GE, LE, EQUAL, NOT_EQUAL -->
</module>
<module name="UnnecessarySemicolonAfterOuterTypeDeclaration"/>
<module name="UnnecessarySemicolonAfterTypeMemberDeclaration"/>
<module name="UnnecessarySemicolonInEnumeration"/>
<module name="UnnecessarySemicolonInTryWithResources"/>
<!-- module name="ParameterAssignment"/-->
<module name="SuperFinalize"/>
<!-- Checks for class design -->
<!-- See http://checkstyle.sf.net/config_design.html -->
<module name="FinalClass"/>
<module name="HideUtilityClassConstructor"/>
<module name="InterfaceIsType"/>
<module name="VisibilityModifier"/>
<!-- Miscellaneous other checks. -->
<!-- See http://checkstyle.sf.net/config_misc.html -->
<module name="UpperEll"/>
<module name="OneStatementPerLine"/>
<module name="FinalLocalVariable">
<property name="tokens" value="VARIABLE_DEF,PARAMETER_DEF"/>
<property name="validateEnhancedForLoopVariable" value="true"/>
</module>
<module name="HiddenField"/>
<module name="MissingOverride"/>
</module>
</module>