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checkstyle.xml
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<?
xml
version
=
"
1.0
"
encoding
=
"
UTF-8
"
?>
<!--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~ Copyright (C) 2014 Google Inc.
~
~ Licensed under the Apache License, Version 2.0 (the "License"); you may not
~ use this file except in compliance with the License. You may obtain a copy of
~ the License at
~
~ http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing, software
~ distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
~ WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
~ License for the specific language governing permissions and limitations under
~ the License.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-->
<!
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
=
"
RegexpSingleline
"
>
<!--
Requires a Google copyright notice in each file.
Code intended to be open-sourced may have a multi-line copyright
notice, so that this required text appears on the second line:
<pre>
/*
* Copyright 2008 Google Inc.
*
* (details of open-source license...)
</pre>
-->
<
property
name
=
"
format
"
value
=
"
^(//| \*) Copyright (\([cC]\) )?[\d]{4}(\-[\d]{4})? (Google Inc\.).*$
"
/>
<
property
name
=
"
minimum
"
value
=
"
1
"
/>
<
property
name
=
"
maximum
"
value
=
"
10
"
/>
<
property
name
=
"
message
"
value
=
"
Google copyright is missing or malformed.
"
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
FileTabCharacter
"
>
<!--
Checks that there are no tab characters in the file.
-->
</
module
>
<
module
name
=
"
NewlineAtEndOfFile
"
/>
<
module
name
=
"
RegexpSingleline
"
>
<!--
Checks that TODOs don't have stuff in parenthesis, e.g., username.
-->
<
property
name
=
"
format
"
value
=
"
((//.*)|(\*.*))TODO\(
"
/>
<
property
name
=
"
message
"
value
=
"
TODO comments must not include usernames.
"
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
RegexpSingleline
"
>
<
property
name
=
"
format
"
value
=
"
[ \t]+$
"
/>
<
property
name
=
"
message
"
value
=
"
Trailing whitespace
"
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
RegexpSingleline
"
>
<!--
Checks that FIXME is not used in comments.
-->
<
property
name
=
"
format
"
value
=
"
((//.*)|(\*.*))FIXME
"
/>
<
property
name
=
"
message
"
value
=
'
FIXME should not appear in comments.
'
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
RegexpSingleline
"
>
<!--
Checks that XXX is not used in comments.
-->
<
property
name
=
"
format
"
value
=
"
((//.*)|(\*.*))XXX
"
/>
<
property
name
=
"
message
"
value
=
'
XXX should not appear in comments.
'
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<!--
All Java AST specific tests live under TreeWalker module.
-->
<
module
name
=
"
TreeWalker
"
>
<
module
name
=
"
TodoComment
"
>
<
metadata
name
=
"
com.atlassw.tools.eclipse.checkstyle.comment
"
value
=
"
Author tags not allowed
"
/>
<
property
name
=
"
format
"
value
=
"
@author
"
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<!--
IMPORT CHECKS
-->
<
module
name
=
"
RedundantImport
"
>
<!--
Checks for redundant import statements.
-->
<
property
name
=
"
severity
"
value
=
"
error
"
/>
<
message
key
=
"
import.redundancy
"
value
=
"
Redundant import {0}.
"
/>
</
module
>
<
module
name
=
"
ImportOrder
"
>
<!--
Checks for out of order import statements.
-->
<
property
name
=
"
severity
"
value
=
"
error
"
/>
<
property
name
=
"
groups
"
value
=
"
com.google,android,com,junit,net,org,sun,java,javax
"
/>
<!--
This ensures that static imports go first.
-->
<
property
name
=
"
option
"
value
=
"
top
"
/>
<
property
name
=
"
tokens
"
value
=
"
STATIC_IMPORT, IMPORT
"
/>
<
message
key
=
"
import.ordering
"
value
=
"
Import {0} appears after other imports that it should precede
"
/>
</
module
>
<
module
name
=
"
AvoidStarImport
"
>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
UnusedImports
"
>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
<
property
name
=
"
processJavadoc
"
value
=
"
true
"
/>
<
message
key
=
"
import.unused
"
value
=
"
Unused import: {0}.
"
/>
</
module
>
<!--
JAVADOC CHECKS
-->
<!--
Checks for Javadoc comments.
-->
<!--
See http://checkstyle.sf.net/config_javadoc.html
-->
<
module
name
=
"
JavadocMethod
"
>
<
property
name
=
"
scope
"
value
=
"
protected
"
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
<
property
name
=
"
allowMissingJavadoc
"
value
=
"
true
"
/>
<
property
name
=
"
allowMissingParamTags
"
value
=
"
true
"
/>
<
property
name
=
"
allowMissingReturnTag
"
value
=
"
true
"
/>
<
property
name
=
"
allowMissingThrowsTags
"
value
=
"
true
"
/>
<
property
name
=
"
allowThrowsTagsForSubclasses
"
value
=
"
true
"
/>
<
property
name
=
"
allowUndeclaredRTE
"
value
=
"
true
"
/>
</
module
>
<
module
name
=
"
JavadocType
"
>
<
property
name
=
"
scope
"
value
=
"
protected
"
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
JavadocStyle
"
>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
<!--
checkHtml considers {@code PCollection<I>} and {@code DoFn<I, O>}
to contains unclosed tags.
-->
<
property
name
=
"
checkHtml
"
value
=
"
false
"
/>
</
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
=
"
error
"
/>
</
module
>
<
module
name
=
"
TypeNameCheck
"
>
<!--
Validates static, final fields against the
expression "^[A-Z][a-zA-Z0-9]*$".
-->
<
metadata
name
=
"
altname
"
value
=
"
TypeName
"
/>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
ConstantNameCheck
"
>
<!--
Validates non-private, static, final fields against the supplied
public/package final fields "^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$".
-->
<
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
=
"
error
"
/>
</
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
=
"
error
"
/>
</
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
=
"
error
"
/>
</
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
=
"
error
"
/>
</
module
>
<
module
name
=
"
ParameterName
"
>
<!--
Validates identifiers for method parameters against the
expression "^[a-z][a-zA-Z0-9]*$".
-->
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
LocalFinalVariableName
"
>
<!--
Validates identifiers for local final variables against the
expression "^[a-z][a-zA-Z0-9]*$".
-->
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<
module
name
=
"
LocalVariableName
"
>
<!--
Validates identifiers for local variables against the
expression "^[a-z][a-zA-Z0-9]*$".
-->
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
module
>
<!--
LENGTH and CODING CHECKS
-->
<
module
name
=
"
LineLength
"
>
<!--
Checks if a line is too long.
-->
<
property
name
=
"
max
"
value
=
"
${com.puppycrawl.tools.checkstyle.checks.sizes.LineLength.max}
"
default
=
"
100
"
/>
<
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
=
"
error
"
/>
</
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
=
"
error
"
/>
</
module
>
<!--
Checks for braces around if and else blocks
-->
<
module
name
=
"
NeedBraces
"
>
<
property
name
=
"
severity
"
value
=
"
error
"
/>
<
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
-->
<
property
name
=
"
severity
"
value
=
"
error
"
/>
</
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
=
"
error
"
/>
</
module
>
</
module
>
</
module
>
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