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.checkstyle.xml
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.checkstyle.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC
"-//Puppy Crawl//DTD Check Configuration 1.3//EN"
"http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
<!-- This is a checkstyle configuration file. For descriptions of what the
following rules do, please see the checkstyle configuration page at http://checkstyle.sourceforge.net/config.html -->
<module name="Checker">
<module name="SuppressionFilter">
</module>
<module name="NewlineAtEndOfFile">
<property name="lineSeparator" value="lf" />
</module>
<module name="RegexpSingleline">
<!-- Checks that FIXME is not used in comments. TODO is preferred. -->
<property name="format" value="((//.*)|(\*.*))FIXME" />
<property name="message"
value='TODO is preferred to FIXME. e.g. "TODO(johndoe): Refactor when v2 is released."' />
</module>
<module name="RegexpSingleline">
<!-- Checks that TODOs are named. (Actually, just that they are followed
by an open parent.) -->
<property name="format" value="((//.*)|(\*.*))TODO [^(]" />
<property name="message"
value='All TODOs should be named. e.g. "TODO (johndoe): Refactor when v2 is released."' />
</module>
<!-- All Java AST specific tests live under TreeWalker module. -->
<module name="TreeWalker">
<property name="tabWidth" value="4"/>
<!-- IMPORT CHECKS -->
<module name="RedundantImport">
<!-- Checks for redundant import statements. -->
<property name="severity" value="error" />
</module>
<!-- NAMING CHECKS -->
<!-- Item 38 - Adhere to generally accepted naming conventions -->
<module name="PackageName">
<!-- Validates identifiers for package names against the supplied expression. -->
<!-- Here the default checkstyle rule restricts package name parts to
seven characters, this is not in line with common practice at Google. -->
<property name="format" value="^[a-z]+(\.[a-z][a-z0-9]{1,})*$" />
<property name="severity" value="warning" />
</module>
<module name="TypeNameCheck">
<!-- Validates static, final fields against the expression "^[A-Z][a-zA-Z0-9]*$". -->
<metadata name="altname" value="TypeName" />
<property name="severity" value="warning" />
</module>
<module name="ConstantNameCheck">
<!-- Validates non-private, static, final fields against the supplied
public/package final fields "^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$". -->
<metadata name="altname" value="ConstantName" />
<property name="applyToPublic" value="true" />
<property name="applyToProtected" value="true" />
<property name="applyToPackage" value="true" />
<property name="applyToPrivate" value="false" />
<property name="format" value="^([A-Z][A-Z0-9]*(_[A-Z0-9]+)*|FLAG_.*)$" />
<message key="name.invalidPattern"
value="Variable ''{0}'' should be in ALL_CAPS (if it is a constant) or be private (otherwise)." />
<property name="severity" value="warning" />
</module>
<module name="StaticVariableNameCheck">
<!-- Validates static, non-final fields against the supplied expression
"^[a-z][a-zA-Z0-9]*_?$". -->
<metadata name="altname" value="StaticVariableName" />
<property name="applyToPublic" value="true" />
<property name="applyToProtected" value="true" />
<property name="applyToPackage" value="true" />
<property name="applyToPrivate" value="true" />
<property name="format" value="^[a-z][a-zA-Z0-9]*_?$" />
<property name="severity" value="warning" />
</module>
<module name="MemberNameCheck">
<!-- Validates non-static members against the supplied expression. -->
<metadata name="altname" value="MemberName" />
<property name="applyToPublic" value="true" />
<property name="applyToProtected" value="true" />
<property name="applyToPackage" value="true" />
<property name="applyToPrivate" value="true" />
<property name="format" value="^[a-z][a-zA-Z0-9]*$" />
<property name="severity" value="warning" />
</module>
<module name="MethodNameCheck">
<!-- Validates identifiers for method names. -->
<metadata name="altname" value="MethodName" />
<property name="format" value="^[a-z][a-zA-Z0-9]*(_[a-zA-Z0-9]+)*$" />
<property name="severity" value="warning" />
</module>
<module name="ParameterName">
<!-- Validates identifiers for method parameters against the expression
"^[a-z][a-zA-Z0-9]*$". -->
<property name="severity" value="warning" />
</module>
<module name="LocalFinalVariableName">
<!-- Validates identifiers for local final variables against the expression
"^[a-z][a-zA-Z0-9]*$". -->
<property name="severity" value="warning" />
</module>
<module name="LocalVariableName">
<!-- Validates identifiers for local variables against the expression
"^[a-z][a-zA-Z0-9]*$". -->
<property name="severity" value="warning" />
</module>
<module name="FinalLocalVariable">
<!-- Checks that local variables that never have their values changed
are declared final. -->
<property name="tokens" value="VARIABLE_DEF" />
<property name="validateEnhancedForLoopVariable" value="true" />
</module>
<!-- LENGTH and CODING CHECKS -->
<module name="LineLength">
<!-- Checks if a line is too long. -->
<property name="max" value="160" />
<property name="severity" value="error" />
<!-- The default ignore pattern exempts the following elements: - import
statements - long URLs inside comments -->
<property name="ignorePattern"
value="${com.puppycrawl.tools.checkstyle.checks.sizes.LineLength.ignorePattern}"
default="^(package .*;\s*)|(import .*;\s*)|( *\* *https?://.*)$" />
</module>
<module name="LeftCurly">
<!-- Checks for placement of the left curly brace ('{'). -->
<property name="severity" value="warning" />
</module>
<module name="RightCurly">
<!-- Checks right curlies on CATCH, ELSE, and TRY blocks are on the same
line. e.g., the following example is fine: <pre> if { ... } else </pre> -->
<!-- This next example is not fine: <pre> if { ... } else </pre> -->
<property name="option" value="same" />
<property name="severity" value="warning" />
</module>
<!-- Checks for braces around if and else blocks -->
<module name="NeedBraces">
<property name="severity" value="warning" />
<property name="tokens"
value="LITERAL_IF, LITERAL_ELSE, LITERAL_FOR, LITERAL_WHILE, LITERAL_DO" />
</module>
<module name="UpperEll">
<!-- Checks that long constants are defined with an upper ell. -->
<property name="severity" value="error" />
</module>
<module name="FallThrough">
<!-- Warn about falling through to the next case statement. Similar to
javac -Xlint:fallthrough, but the check is suppressed if a single-line comment
on the last non-blank line preceding the fallen-into case contains 'fall
through' (or some other variants which we don't publicized to promote consistency). -->
<property name="reliefPattern"
value="fall through|Fall through|fallthru|Fallthru|falls through|Falls through|fallthrough|Fallthrough|No break|NO break|no break|continue on" />
<property name="severity" value="error" />
</module>
<!-- MODIFIERS CHECKS -->
<module name="ModifierOrder">
<!-- Warn if modifier order is inconsistent with JLS3 8.1.1, 8.3.1, and
8.4.3. The prescribed order is: public, protected, private, abstract, static,
final, transient, volatile, synchronized, native, strictfp -->
</module>
<!-- WHITESPACE CHECKS -->
<module name="WhitespaceAround">
<!-- Checks that various tokens are surrounded by whitespace. This includes
most binary operators and keywords followed by regular or curly braces. -->
<property name="tokens"
value="ASSIGN, BAND, BAND_ASSIGN, BOR,
BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN, COLON, DIV, DIV_ASSIGN,
EQUAL, GE, GT, LAND, LE, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE,
LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF, LITERAL_RETURN,
LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS,
MINUS_ASSIGN, MOD, MOD_ASSIGN, NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION,
SL, SL_ASSIGN, SR_ASSIGN, STAR, STAR_ASSIGN" />
<property name="severity" value="error" />
</module>
<module name="WhitespaceAfter">
<!-- Checks that commas, semicolons and typecasts are followed by whitespace. -->
<property name="tokens" value="COMMA, SEMI, TYPECAST" />
</module>
<module name="NoWhitespaceAfter">
<!-- Checks that there is no whitespace after various unary operators.
Linebreaks are allowed. -->
<property name="tokens"
value="BNOT, DEC, DOT, INC, LNOT, UNARY_MINUS,
UNARY_PLUS" />
<property name="allowLineBreaks" value="true" />
<property name="severity" value="error" />
</module>
<module name="NoWhitespaceBefore">
<!-- Checks that there is no whitespace before various unary operators.
Linebreaks are allowed. -->
<property name="tokens" value="SEMI, DOT, POST_DEC, POST_INC" />
<property name="allowLineBreaks" value="true" />
<property name="severity" value="error" />
</module>
<module name="ParenPad">
<!-- Checks that there is no whitespace before close parens or after open
parens. -->
<property name="severity" value="warning" />
</module>
</module>
</module>