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<?xml version="1.0" encoding="UTF-8" ?>
<ruleset name="Code Size Rules"
xmlns="http://pmd.sf.net/ruleset/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd"
xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd">
<description>
The Code Size Ruleset contains a collection of rules that find code size related problems.
</description>
<rule name="CyclomaticComplexity"
since="0.1"
message = "The {0} {1}() has a Cyclomatic Complexity of {2}. The configured cyclomatic complexity threshold is {3}."
class="PHPMD\Rule\CyclomaticComplexity"
externalInfoUrl="https://phpmd.org/rules/codesize.html#cyclomaticcomplexity">
<description>
<![CDATA[
Complexity is determined by the number of decision points in a method plus one for the
method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally,
1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity,
and 11+ is very high complexity.
]]>
</description>
<priority>3</priority>
<properties>
<property name="reportLevel" description="The Cyclomatic Complexity reporting threshold" value="10"/>
<property name="showClassesComplexity"
description="Indicate if class average violation should be added to the report"
value="true"/>
<property name="showMethodsComplexity"
description="Indicate if class average violation should be added to the report"
value="true"/>
</properties>
<example>
<![CDATA[
// Cyclomatic Complexity = 11
class Foo {
1 public function example() {
2 if ($a == $b) {
3 if ($a1 == $b1) {
fiddle();
4 } elseif ($a2 == $b2) {
fiddle();
} else {
fiddle();
}
5 } elseif ($c == $d) {
6 while ($c == $d) {
fiddle();
}
7 } elseif ($e == $f) {
8 for ($n = 0; $n < $h; $n++) {
fiddle();
}
} else {
switch ($z) {
9 case 1:
fiddle();
break;
10 case 2:
fiddle();
break;
11 case 3:
fiddle();
break;
default:
fiddle();
break;
}
}
}
}
]]>
</example>
</rule>
<rule name="NPathComplexity"
since="0.1"
message="The {0} {1}() has an NPath complexity of {2}. The configured NPath complexity threshold is {3}."
class="PHPMD\Rule\Design\NpathComplexity"
externalInfoUrl="https://phpmd.org/rules/codesize.html#npathcomplexity">
<description>
The NPath complexity of a method is the number of acyclic execution paths through that method.
A threshold of 200 is generally considered the point where measures should be taken to reduce complexity.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The npath reporting threshold" value="200"/>
</properties>
<example>
<![CDATA[
class Foo {
function bar() {
// lots of complicated code
}
}
]]>
</example>
</rule>
<rule name="ExcessiveMethodLength"
since="0.1"
message="The {0} {1}() has {2} lines of code. Current threshold is set to {3}. Avoid really long methods."
class="PHPMD\Rule\Design\LongMethod"
externalInfoUrl="https://phpmd.org/rules/codesize.html#excessivemethodlength">
<description>
Violations of this rule usually indicate that the method is doing
too much. Try to reduce the method size by creating helper methods and removing any copy/pasted code.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The method size reporting threshold" value="100"/>
<property name="ignore-whitespace" description="Count whitespace in reporting threshold" value="false"/>
</properties>
<example>
<![CDATA[
class Foo {
public function doSomething() {
print("Hello world!" . PHP_EOL);
print("Hello world!" . PHP_EOL);
// 98 copies omitted for brevity.
}
}
]]>
</example>
</rule>
<rule name="ExcessiveClassLength"
since="0.1"
message="The class {0} has {1} lines of code. Current threshold is {2}. Avoid really long classes."
class="PHPMD\Rule\Design\LongClass"
externalInfoUrl="https://phpmd.org/rules/codesize.html#excessiveclasslength">
<description>
Long Class files are indications that the class may be trying to
do too much. Try to break it down, and reduce the size to something
manageable.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The class size reporting threshold" value="1000"/>
<property name="ignore-whitespace" description="Count whitespace in reporting threshold" value="false"/>
</properties>
<example>
<![CDATA[
class Foo {
public function bar() {
// 1000 lines of code
}
}
]]>
</example>
</rule>
<rule name="ExcessiveParameterList"
since="0.1"
message="The {0} {1} has {2} parameters. Consider reducing the number of parameters to less than {3}."
class="PHPMD\Rule\Design\LongParameterList"
externalInfoUrl="https://phpmd.org/rules/codesize.html#excessiveparameterlist">
<description>
Long parameter lists can indicate that a new object should be created to
wrap the numerous parameters. Basically, try to group the parameters together.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The parameter count reporting threshold" value="10"/>
</properties>
<example>
<![CDATA[
class Foo {
public function addData(
$p0, $p1, $p2, $p3, $p4, $p5,
$p5, $p6, $p7, $p8, $p9, $p10) {
}
}
]]>
</example>
</rule>
<rule name="ExcessivePublicCount"
since="0.1"
message="The {0} {1} has {2} public methods and attributes. Consider reducing the number of public items to less than {3}."
class="PHPMD\Rule\ExcessivePublicCount"
externalInfoUrl="https://phpmd.org/rules/codesize.html#excessivepubliccount">
<description>
A large number of public methods and attributes declared in a class can indicate
the class may need to be broken up as increased effort will be required to
thoroughly test it.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The public item reporting threshold" value="45"/>
</properties>
<example>
<![CDATA[
public class Foo {
public $value;
public $something;
public $var;
// [... more more public attributes ...]
public function doWork() {}
public function doMoreWork() {}
public function doWorkAgain() {}
// [... more more public methods ...]
}
]]>
</example>
</rule>
<rule name="TooManyFields"
since="0.1"
message="The {0} {1} has {2} fields. Consider redesigning {1} to keep the number of fields under {3}."
class="PHPMD\Rule\Design\TooManyFields"
externalInfoUrl="https://phpmd.org/rules/codesize.html#toomanyfields">
<description>
Classes that have too many fields could be redesigned to have fewer fields,
possibly through some nested object grouping of some of the information. For
example, a class with city/state/zip fields could instead have one Address
field.
</description>
<priority>3</priority>
<properties>
<property name="maxfields" description="The field count reporting threshold " value="15"/>
</properties>
<example>
<![CDATA[
class Person {
protected $one;
private $two;
private $three;
[... many more fields ...]
}
]]>
</example>
</rule>
<!--
<rule name="NcssMethodCount" message="The method {0}() has an NCSS line count of {1}"
since="3.9"
class="net.sourceforge.pmd.rules.codesize.NcssMethodCount"
externalInfoUrl="http://pmd.sourceforge.net/rules/codesize.html#NcssMethodCount">
<description>
This rule uses the NCSS (Non Commenting Source Statements) algorithm to determine the number of lines
of code for a given method. NCSS ignores comments, and counts actual statements. Using this algorithm,
lines of code that are split are counted as one.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The method NCSS count reporting threshold" value="100"/>
</properties>
<example>
<![CDATA[
public class Foo extends Bar {
public int method() {
super.method();
//this method only has 1 NCSS lines
return 1;
}
}
]]>
</example>
</rule>
<rule name="NcssTypeCount" message="The type has an NCSS line count of {0}"
since="3.9"
class="net.sourceforge.pmd.rules.codesize.NcssTypeCount"
externalInfoUrl="http://pmd.sourceforge.net/rules/codesize.html#NcssTypeCount">
<description>
This rule uses the NCSS (Non Commenting Source Statements) algorithm to determine the number of lines
of code for a given type. NCSS ignores comments, and counts actual statements. Using this algorithm,
lines of code that are split are counted as one.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The type NCSS count reporting threshold" value="1500"/>
</properties>
<example>
<![CDATA[
public class Foo extends Bar {
public Foo() {
//this class only has 6 NCSS lines
super();
super.foo();
}
}
]]>
</example></rule>
<rule name="NcssConstructorCount" message="The constructor with {0} parameters has an NCSS line count of {1}"
since="3.9"
class="net.sourceforge.pmd.rules.codesize.NcssConstructorCount"
externalInfoUrl="http://pmd.sourceforge.net/rules/codesize.html#NcssConstructorCount">
<description>
This rule uses the NCSS (Non Commenting Source Statements) algorithm to determine the number of lines
of code for a given constructor. NCSS ignores comments, and counts actual statements. Using this algorithm,
lines of code that are split are counted as one.
</description>
<priority>3</priority>
<properties>
<property name="minimum" description="The constructor NCSS count reporting threshold" value="100"/>
</properties>
<example>
<![CDATA[
public class Foo extends Bar {
public Foo() {
super();
//this constructor only has 1 NCSS lines
super.foo();
}
}
]]>
</example>
</rule>
-->
<rule name="TooManyMethods"
since="0.1"
class="PHPMD\Rule\Design\TooManyMethods"
message="The {0} {1} has {2} non-getter- and setter-methods. Consider refactoring {1} to keep number of methods under {3}."
externalInfoUrl="https://phpmd.org/rules/codesize.html#toomanymethods">
<description>
<![CDATA[
A class with too many methods is probably a good suspect for refactoring, in
order to reduce its complexity and find a way to have more fine grained objects.
By default it ignores methods starting with 'get' or 'set'.
The default was changed from 10 to 25 in PHPMD 2.3.
]]>
</description>
<priority>3</priority>
<properties>
<property name="maxmethods" description="The method count reporting threshold" value="25"/>
<property name="ignorepattern" description="Ignore methods matching this regex" value="(^(set|get|is|has|with))i"/>
</properties>
</rule>
<rule name="TooManyPublicMethods"
since="0.1"
class="PHPMD\Rule\Design\TooManyPublicMethods"
message="The {0} {1} has {2} public methods. Consider refactoring {1} to keep number of public methods under {3}."
externalInfoUrl="https://phpmd.org/rules/codesize.html#toomanypublicmethods">
<description>
<![CDATA[
A class with too many public methods is probably a good suspect for refactoring, in
order to reduce its complexity and find a way to have more fine grained objects.
By default it ignores methods starting with 'get' or 'set'.
]]>
</description>
<priority>3</priority>
<properties>
<property name="maxmethods" description="The method count reporting threshold" value="10"/>
<property name="ignorepattern" description="Ignore methods matching this regex" value="(^(set|get|is|has|with))i"/>
</properties>
</rule>
<rule name="ExcessiveClassComplexity"
since="0.2.5"
class="PHPMD\Rule\Design\WeightedMethodCount"
message="The class {0} has an overall complexity of {1} which is very high. The configured complexity threshold is {2}."
externalInfoUrl="https://phpmd.org/rules/codesize.html#excessiveclasscomplexity">
<description>
<![CDATA[
The Weighted Method Count (WMC) of a class is a good indicator of how much time
and effort is required to modify and maintain this class. The WMC metric is defined
as the sum of complexities of all methods declared in a class. A large number of
methods also means that this class has a greater potential impact on derived classes.
]]>
</description>
<priority>3</priority>
<properties>
<property name="maximum" description="The maximum WMC tolerable for a class." value="50"/>
</properties>
<example>
<![CDATA[
class Foo {
public function bar() {
if ($a == $b) {
if ($a1 == $b1) {
fiddle();
} elseif ($a2 == $b2) {
fiddle();
} else {
}
}
}
public function baz() {
if ($a == $b) {
if ($a1 == $b1) {
fiddle();
} elseif ($a2 == $b2) {
fiddle();
} else {
}
}
}
// Several other complex methods
}
]]>
</example>
</rule>
</ruleset>