<?xml version="1.0"?>

<!DOCTYPE module PUBLIC

"-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"

"https://checkstyle.org/dtds/configuration_1_3.dtd">

<module name = "Checker">

<property name="charset" value="UTF-8"/>

<property name="severity" value="warning"/>

<property name="fileExtensions" value="java, properties, xml"/>

<!-- Excludes all 'module-info.java' files -->

<!-- See https://checkstyle.org/config_filefilters.html -->

<module name="BeforeExecutionExclusionFileFilter">

<property name="fileNamePattern" value="module\-info\.java$"/>

</module>

<!-- Checks for whitespace -->

<!-- See http://checkstyle.sf.net/config_whitespace.html -->

<module name="FileTabCharacter">

<property name="eachLine" value="true"/>

</module>

<module name="LineLength">

<property name="max" value="100"/>

<property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>

</module>

<module name="TreeWalker">

<module name="OuterTypeFilename"/>

<module name="IllegalTokenText">

<property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>

<property name="format"

value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>

<property name="message"

value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>

</module>

<module name="AvoidEscapedUnicodeCharacters">

<property name="allowEscapesForControlCharacters" value="true"/>

<property name="allowByTailComment" value="true"/>

<property name="allowNonPrintableEscapes" value="true"/>

</module>

<module name="AvoidStarImport"/>

<module name="OneTopLevelClass"/>

<module name="NoLineWrap"/>

<module name="EmptyBlock">

<property name="option" value="TEXT"/>

<property name="tokens"

value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>

</module>

<module name="NeedBraces"/>

<module name="LeftCurly"/>

<module name="RightCurly">

<property name="id" value="RightCurlySame"/>

<property name="tokens"

value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE,

LITERAL_DO"/>

</module>

<module name="RightCurly">

<property name="id" value="RightCurlyAlone"/>

<!-- alone -> alone_or_singleine: google-java-format converts to this style -->

<property name="option" value="alone_or_singleline"/>

<property name="tokens"

value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, STATIC_INIT,

INSTANCE_INIT"/>

</module>

<module name="WhitespaceAround">

<property name="allowEmptyConstructors" value="true"/>

<property name="allowEmptyLambdas" value="true"/>

<property name="allowEmptyMethods" value="true"/>

<property name="allowEmptyTypes" value="true"/>

<property name="allowEmptyLoops" value="true"/>

<message key="ws.notFollowed"

value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>

<message key="ws.notPreceded"

value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>

</module>

<module name="OneStatementPerLine"/>

<module name="MultipleVariableDeclarations"/>

<module name="ArrayTypeStyle"/>

<module name="MissingSwitchDefault"/>

<module name="FallThrough"/>

<module name="UpperEll"/>

<module name="ModifierOrder"/>

<module name="EmptyLineSeparator">

<property name="allowNoEmptyLineBetweenFields" value="true"/>

</module>

<module name="SeparatorWrap">

<property name="id" value="SeparatorWrapDot"/>

<property name="tokens" value="DOT"/>

<property name="option" value="nl"/>

</module>

<module name="SeparatorWrap">

<property name="id" value="SeparatorWrapComma"/>

<property name="tokens" value="COMMA"/>

<property name="option" value="EOL"/>

</module>

<module name="SeparatorWrap">

<!-- ELLIPSIS is EOL until https://github.com/google/styleguide/issues/258 -->

<property name="id" value="SeparatorWrapEllipsis"/>

<property name="tokens" value="ELLIPSIS"/>

<property name="option" value="EOL"/>

</module>

<module name="SeparatorWrap">

<!-- ARRAY_DECLARATOR is EOL until https://github.com/google/styleguide/issues/259 -->

<property name="id" value="SeparatorWrapArrayDeclarator"/>

<property name="tokens" value="ARRAY_DECLARATOR"/>

<property name="option" value="EOL"/>

</module>

<module name="SeparatorWrap">

<property name="id" value="SeparatorWrapMethodRef"/>

<property name="tokens" value="METHOD_REF"/>

<property name="option" value="nl"/>

</module>

<module name="PackageName">

<property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>

<message key="name.invalidPattern"

value="Package name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="TypeName">

<message key="name.invalidPattern"

value="Type name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="MemberName">

<property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>

<message key="name.invalidPattern"

value="Member name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="ParameterName">

<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>

<message key="name.invalidPattern"

value="Parameter name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="LambdaParameterName">

<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>

<message key="name.invalidPattern"

value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="CatchParameterName">

<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>

<message key="name.invalidPattern"

value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="LocalVariableName">

<property name="tokens" value="VARIABLE_DEF"/>

<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>

<message key="name.invalidPattern"

value="Local variable name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="ClassTypeParameterName">

<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>

<message key="name.invalidPattern"

value="Class type name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="MethodTypeParameterName">

<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>

<message key="name.invalidPattern"

value="Method type name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="InterfaceTypeParameterName">

<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>

<message key="name.invalidPattern"

value="Interface type name ''{0}'' must match pattern ''{1}''."/>

</module>

<module name="NoFinalizer"/>

<module name="GenericWhitespace">

<message key="ws.followed"

value="GenericWhitespace ''{0}'' is followed by whitespace."/>

<message key="ws.preceded"

value="GenericWhitespace ''{0}'' is preceded with whitespace."/>

<message key="ws.illegalFollow"

value="GenericWhitespace ''{0}'' should followed by whitespace."/>

<message key="ws.notPreceded"

value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>

</module>

<module name="Indentation">

<property name="basicOffset" value="2"/>

<property name="braceAdjustment" value="0"/>

<property name="caseIndent" value="2"/>

<property name="throwsIndent" value="4"/>

<property name="lineWrappingIndentation" value="4"/>

<property name="arrayInitIndent" value="2"/>

</module>

<module name="AbbreviationAsWordInName">

<property name="ignoreFinal" value="false"/>

<property name="allowedAbbreviationLength" value="1"/>

</module>

<module name="OverloadMethodsDeclarationOrder"/>

<module name="VariableDeclarationUsageDistance"/>

<module name="CustomImportOrder">

<property name="sortImportsInGroupAlphabetically" value="true"/>

<property name="separateLineBetweenGroups" value="true"/>

<property name="customImportOrderRules" value="STATIC###THIRD_PARTY_PACKAGE"/>

</module>

<module name="MethodParamPad"/>

<module name="NoWhitespaceBefore">

<property name="tokens"

value="COMMA, SEMI, POST_INC, POST_DEC, DOT, ELLIPSIS, METHOD_REF"/>

<property name="allowLineBreaks" value="true"/>

</module>

<module name="ParenPad"/>

<module name="OperatorWrap">

<property name="option" value="NL"/>

<property name="tokens"

value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR,

LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF "/>

</module>

<module name="AnnotationLocation">

<property name="id" value="AnnotationLocationMostCases"/>

<property name="tokens"

value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF"/>

</module>

<module name="AnnotationLocation">

<property name="id" value="AnnotationLocationVariables"/>

<property name="tokens" value="VARIABLE_DEF"/>

<property name="allowSamelineMultipleAnnotations" value="true"/>

</module>

<module name="NonEmptyAtclauseDescription"/>

<module name="InvalidJavadocPosition"/>

<module name="JavadocTagContinuationIndentation"/>

<module name="SummaryJavadoc">

<property name="forbiddenSummaryFragments"

value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )"/>

</module>

<module name="JavadocParagraph"/>

<module name="AtclauseOrder">

<property name="tagOrder" value="@param, @return, @throws, @deprecated"/>

<property name="target"

value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>

</module>

<module name="JavadocMethod">

<property name="accessModifiers" value="public"/>

<property name="allowMissingParamTags" value="true"/>

<property name="allowMissingReturnTag" value="true"/>

<property name="allowedAnnotations" value="Override, Test"/>

<property name="validateThrows" value="true"/>

</module>

<module name="MissingJavadocMethod">

<property name="scope" value="public"/>

<property name="minLineCount" value="2"/>

<property name="allowedAnnotations" value="Override, Test"/>

</module>

<module name="MethodName">

<property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>

<message key="name.invalidPattern"

value="Method name ''{0}'' must match pattern ''{1}''."/>

</module>

<!-- Ignore SingleLineJavadoc rule: google-java-format converts to this style -->

<!--<module name="SingleLineJavadoc">-->

<!--<property name="ignoreInlineTags" value="false"/>-->

<!--</module>-->

<module name="EmptyCatchBlock">

<property name="exceptionVariableName" value="expected"/>

</module>

<module name="CommentsIndentation"/>

</module>

</module>