1Perl::Critic::Config(3)User Contributed Perl DocumentatioPnerl::Critic::Config(3)
2
6 Perl::Critic::Config - The final derived Perl::Critic configuration,
7 combined from any profile file and command-line parameters.
8
10 Perl::Critic::Config takes care of finding and processing user-
11 preferences for Perl::Critic. The Config object defines which Policy
12 modules will be loaded into the Perl::Critic engine and how they should
13 be configured. You should never really need to instantiate
14 Perl::Critic::Config directly because the Perl::Critic constructor will
15 do it for you.
16
18 This is considered to be a non-public class. Its interface is subject
19 to change without notice.
20
22 "new( [ -profile => $FILE, -severity => $N, -theme => $string, -include
23 => \@PATTERNS, -exclude => \@PATTERNS, -single-policy => $PATTERN, -top
24 => $N, -only => $B, -profile-strictness =>
25 $PROFILE_STRICTNESS_{WARN|FATAL|QUIET}, -force => $B, -verbose => $N,
26 -color => $B, -criticism-fatal => $B] )"
27 "new()"
28 Returns a reference to a new Perl::Critic::Config object. The
29 default value for all arguments can be defined in your
30 .perlcriticrc file. See the "CONFIGURATION" section for more
31 information about that. All arguments are optional key-value pairs
32 as follows:
33 -profile is a path to a configuration file. If $FILE is not
35 defined, Perl::Critic::Config attempts to find a .perlcriticrc
36 configuration file in the current directory, and then in your home
37 directory. Alternatively, you can set the "PERLCRITIC" environment
38 variable to point to a file in another location. If a
39 configuration file can't be found, or if $FILE is an empty string,
40 then all Policies will be loaded with their default configuration.
41 See "CONFIGURATION" for more information.
42 -severity is the minimum severity level. Only Policy modules that
44 have a severity greater than $N will be loaded into this Config.
45 Severity values are integers ranging from 1 (least severe) to 5
46 (most severe). The default is 5. For a given "-profile",
47 decreasing the "-severity" will usually result in more Policy
48 violations. Users can redefine the severity level for any Policy
49 in their .perlcriticrc file. See "CONFIGURATION" for more
50 information.
51 -theme is special string that defines a set of Policies based on
53 their respective themes. If "-theme" is given, only policies that
54 are members of that set will be loaded. See the "POLICY THEMES"
55 section for more information about themes. Unless the "-severity"
56 option is explicitly given, setting "-theme" causes the "-severity"
57 to be set to 1.
58 -include is a reference to a list of string @PATTERNS. Policies
60 that match at least one "m/$PATTERN/ixms" will be loaded into this
61 Config, irrespective of the severity settings. You can use it in
62 conjunction with the "-exclude" option. Note that "-exclude" takes
63 precedence over "-include" when a Policy matches both patterns.
64 -exclude is a reference to a list of string @PATTERNS. Polices
66 that match at least one "m/$PATTERN/ixms" will not be loaded into
67 this Config, irrespective of the severity settings. You can use it
68 in conjunction with the "-include" option. Note that "-exclude"
69 takes precedence over "-include" when a Policy matches both
70 patterns.
71 -single-policy is a string "PATTERN". Only the policy that matches
73 "m/$PATTERN/ixms" will be used. This value overrides the
74 "-severity", "-theme", "-include", "-exclude", and "-only" options.
75 -top is the maximum number of Violations to return when ranked by
77 their severity levels. This must be a positive integer.
78 Violations are still returned in the order that they occur within
79 the file. Unless the "-severity" option is explicitly given,
80 setting "-top" silently causes the "-severity" to be set to 1.
81 -only is a boolean value. If set to a true value, Perl::Critic
83 will only choose from Policies that are mentioned in the user's
84 profile. If set to a false value (which is the default), then
85 Perl::Critic chooses from all the Policies that it finds at your
86 site.
87 -profile-strictness is an enumerated value, one of
89 "$PROFILE_STRICTNESS_WARN" in Perl::Critic::Utils::Constants (the
90 default), "$PROFILE_STRICTNESS_FATAL" in
91 Perl::Critic::Utils::Constants, and "$PROFILE_STRICTNESS_QUIET" in
92 Perl::Critic::Utils::Constants. If set to
93 "$PROFILE_STRICTNESS_FATAL" in Perl::Critic::Utils::Constants,
94 Perl::Critic will make certain warnings about problems found in a
95 .perlcriticrc or file specified via the -profile option fatal. For
96 example, Perl::Critic normally only "warn"s about profiles
97 referring to non-existent Policies, but this value makes this
98 situation fatal. Correspondingly, "$PROFILE_STRICTNESS_QUIET" in
99 Perl::Critic::Utils::Constants makes Perl::Critic shut up about
100 these things.
101 -force controls whether Perl::Critic observes the magical "## no
103 critic" annotations in your code. If set to a true value,
104 Perl::Critic will analyze all code. If set to a false value (which
105 is the default) Perl::Critic will ignore code that is tagged with
106 these comments. See "BENDING THE RULES" in Perl::Critic for more
107 information.
108 -verbose can be a positive integer (from 1 to 10), or a literal
110 format specification. See Perl::Critic::Violations for an
111 explanation of format specifications.
112 -color and -pager are not used by Perl::Critic but is provided for
114 the benefit of perlcritic.
115 -criticism-fatal is not used by Perl::Critic but is provided for
117 the benefit of criticism.
118 -color-severity-highest is a string representing the highest
120 severity violation color, as expected by Term::ANSIColor. It is not
121 used by Perl::Critic, but is provided for the benefit of
122 perlcritic. It can also be specified as -colour-severity-highest,
123 -color-severity-5, or -colour-severity-5.
124 -color-severity-high is a string representing the high severity
126 violation color, as expected by Term::ANSIColor. It is not used by
127 Perl::Critic, but is provided for the benefit of perlcritic. It can
128 also be specified as -colour-severity-high, -color-severity-4, or
129 -colour-severity-4.
130 -color-severity-medium is a string representing the medium severity
132 violation color, as expected by Term::ANSIColor. It is not used by
133 Perl::Critic, but is provided for the benefit of perlcritic. It can
134 also be specified as -colour-severity-medium, -color-severity-3, or
135 -colour-severity-3.
136 -color-severity-low is a string representing the low severity
138 violation color, as expected by Term::ANSIColor. It is not used by
139 Perl::Critic, but is provided for the benefit of perlcritic. It can
140 also be specified as -colour-severity-low, -color-severity-2, or
141 -colour-severity-2.
142 -color-severity-lowest is a string representing the lowest severity
144 violation color, as expected by Term::ANSIColor. It is not used by
145 Perl::Critic, but is provided for the benefit of perlcritic. It can
146 also be specified as -colour-severity-lowest, -color-severity-1, or
147 -colour-severity-1.
148
150 "add_policy( -policy => $policy_name, -params => \%param_hash )"
151 Creates a Policy object and loads it into this Config. If the
152 object cannot be instantiated, it will throw a fatal exception.
153 Otherwise, it returns a reference to this Critic.
154 -policy is the name of a Perl::Critic::Policy subclass module. The
156 'Perl::Critic::Policy' portion of the name can be omitted for
157 brevity. This argument is required.
158 -params is an optional reference to a hash of Policy parameters.
160 The contents of this hash reference will be passed into to the
161 constructor of the Policy module. See the documentation in the
162 relevant Policy module for a description of the arguments it
163 supports.
164 " all_policies_enabled_or_not() "
166 Returns a list containing references to all the Policy objects that
167 have been seen. Note that the state of these objects is not
168 trustworthy. In particular, it is likely that some of them are not
169 prepared to examine any documents.
170 " policies() "
172 Returns a list containing references to all the Policy objects that
173 have been enabled and loaded into this Config.
174 " exclude() "
176 Returns the value of the "-exclude" attribute for this Config.
177 " include() "
179 Returns the value of the "-include" attribute for this Config.
180 " force() "
182 Returns the value of the "-force" attribute for this Config.
183 " only() "
185 Returns the value of the "-only" attribute for this Config.
186 " profile_strictness() "
188 Returns the value of the "-profile-strictness" attribute for this
189 Config.
190 " severity() "
192 Returns the value of the "-severity" attribute for this Config.
193 " single_policy() "
195 Returns the value of the "-single-policy" attribute for this
196 Config.
197 " theme() "
199 Returns the Perl::Critic::Theme object that was created for this
200 Config.
201 " top() "
203 Returns the value of the "-top" attribute for this Config.
204 " verbose() "
206 Returns the value of the "-verbose" attribute for this Config.
207 " color() "
209 Returns the value of the "-color" attribute for this Config.
210 " pager() "
212 Returns the value of the "-pager" attribute for this Config.
213 " criticism_fatal() "
215 Returns the value of the "-criticsm-fatal" attribute for this
216 Config.
217 " color_severity_highest() "
219 Returns the value of the "-color-severity-highest" attribute for
220 this Config.
221 " color_severity_high() "
223 Returns the value of the "-color-severity-high" attribute for this
224 Config.
225 " color_severity_medium() "
227 Returns the value of the "-color-severity-medium" attribute for
228 this Config.
229 " color_severity_low() "
231 Returns the value of the "-color-severity-low" attribute for this
232 Config.
233 " color_severity_lowest() "
235 Returns the value of the "-color-severity-lowest" attribute for
236 this Config.
237
239 Perl::Critic::Config has a few static subroutines that are used
240 internally, but may be useful to you in some way.
241 "site_policy_names()"
243 Returns a list of all the Policy modules that are currently
244 installed in the Perl::Critic:Policy namespace. These will include
245 modules that are distributed with Perl::Critic plus any third-party
246 modules that have been installed.
247
249 Most of the settings for Perl::Critic and each of the Policy modules
250 can be controlled by a configuration file. The default configuration
251 file is called .perlcriticrc. Perl::Critic::Config will look for this
252 file in the current directory first, and then in your home directory.
253 Alternatively, you can set the "PERLCRITIC" environment variable to
254 explicitly point to a different file in another location. If none of
255 these files exist, and the "-profile" option is not given to the
256 constructor, then all Policies will be loaded with their default
257 configuration.
258 The format of the configuration file is a series of INI-style blocks
260 that contain key-value pairs separated by '='. Comments should start
261 with '#' and can be placed on a separate line or after the name-value
262 pairs if you desire.
263 Default settings for Perl::Critic itself can be set before the first
265 named block. For example, putting any or all of these at the top of
266 your configuration file will set the default value for the
267 corresponding Perl::Critic constructor argument.
268 severity = 3 #Integer from 1 to 5
270 only = 1 #Zero or One
271 force = 0 #Zero or One
272 verbose = 4 #Integer or format spec
273 top = 50 #A positive integer
274 theme = risky + (pbp * security) - cosmetic #A theme expression
275 include = NamingConventions ClassHierarchies #Space-delimited list
276 exclude = Variables Modules::RequirePackage #Space-delimited list
277 color = 1 #Zero or One
278 color-severity-highest = bold red #Term::ANSIColor
279 color-severity-high = magenta #Term::ANSIColor
280 color-severity-medium = #no coloring
281 color-severity-low = #no coloring
282 color-severity-lowest = #no coloring
283 The remainder of the configuration file is a series of blocks like
285 this:
286 [Perl::Critic::Policy::Category::PolicyName]
288 severity = 1
289 set_themes = foo bar
290 add_themes = baz
291 arg1 = value1
292 arg2 = value2
293 "Perl::Critic::Policy::Category::PolicyName" is the full name of a
295 module that implements the policy. The Policy modules distributed with
296 Perl::Critic have been grouped into categories according to the table
297 of contents in Damian Conway's book Perl Best Practices. For brevity,
298 you can omit the 'Perl::Critic::Policy' part of the module name.
299 "severity" is the level of importance you wish to assign to the Policy.
301 All Policy modules are defined with a default severity value ranging
302 from 1 (least severe) to 5 (most severe). However, you may disagree
303 with the default severity and choose to give it a higher or lower
304 severity, based on your own coding philosophy.
305 The remaining key-value pairs are configuration parameters that will be
307 passed into the constructor of that Policy. The constructors for most
308 Policy modules do not support arguments, and those that do should have
309 reasonable defaults. See the documentation on the appropriate Policy
310 module for more details.
311 Instead of redefining the severity for a given Policy, you can
313 completely disable a Policy by prepending a '-' to the name of the
314 module in your configuration file. In this manner, the Policy will
315 never be loaded, regardless of the "-severity" given to the
316 Perl::Critic::Config constructor.
317 A simple configuration might look like this:
319 #--------------------------------------------------------------
321 # I think these are really important, so always load them
322 [TestingAndDebugging::RequireUseStrict]
324 severity = 5
325 [TestingAndDebugging::RequireUseWarnings]
327 severity = 5
328 #--------------------------------------------------------------
330 # I think these are less important, so only load when asked
331 [Variables::ProhibitPackageVars]
333 severity = 2
334 [ControlStructures::ProhibitPostfixControls]
336 allow = if unless #My custom configuration
337 severity = 2
338 #--------------------------------------------------------------
340 # Give these policies a custom theme. I can activate just
341 # these policies by saying (-theme => 'larry + curly')
342 [Modules::RequireFilenameMatchesPackage]
344 add_themes = larry
345 [TestingAndDebugging::RequireTestLables]
347 add_themes = curly moe
348 #--------------------------------------------------------------
350 # I do not agree with these at all, so never load them
351 [-NamingConventions::Capitalization]
353 [-ValuesAndExpressions::ProhibitMagicNumbers]
354 #--------------------------------------------------------------
356 # For all other Policies, I accept the default severity, theme
357 # and other parameters, so no additional configuration is
358 # required for them.
359 For additional configuration examples, see the perlcriticrc file that
361 is included in this t/examples directory of this distribution.
362
364 A large number of Policy modules are distributed with Perl::Critic.
365 They are described briefly in the companion document
366 Perl::Critic::PolicySummary and in more detail in the individual
367 modules themselves.
368
370 Each Policy is defined with one or more "themes". Themes can be used
371 to create arbitrary groups of Policies. They are intended to provide
372 an alternative mechanism for selecting your preferred set of Policies.
373 For example, you may wish disable a certain subset of Policies when
374 analyzing test scripts. Conversely, you may wish to enable only a
375 specific subset of Policies when analyzing modules.
376 The Policies that ship with Perl::Critic are have been broken into the
378 following themes. This is just our attempt to provide some basic
379 logical groupings. You are free to invent new themes that suit your
380 needs.
381 THEME DESCRIPTION
383 --------------------------------------------------------------------------
384 core All policies that ship with Perl::Critic
385 pbp Policies that come directly from "Perl Best Practices"
386 bugs Policies that that prevent or reveal bugs
387 maintenance Policies that affect the long-term health of the code
388 cosmetic Policies that only have a superficial effect
389 complexity Policies that specificaly relate to code complexity
390 security Policies that relate to security issues
391 tests Policies that are specific to test scripts
392 Say "`perlcritic -list`" to get a listing of all available policies and
394 the themes that are associated with each one. You can also change the
395 theme for any Policy in your .perlcriticrc file. See the
396 "CONFIGURATION" section for more information about that.
397 Using the "-theme" option, you can combine theme names with
399 mathematical and boolean operators to create an arbitrarily complex
400 expression that represents a custom "set" of Policies. The following
401 operators are supported
402 Operator Alternative Meaning
404 ----------------------------------------------------------------------------
405 * and Intersection
406 - not Difference
407 + or Union
408 Operator precedence is the same as that of normal mathematics. You can
410 also use parenthesis to enforce precedence. Here are some examples:
411 Expression Meaning
413 ----------------------------------------------------------------------------
414 pbp * bugs All policies that are "pbp" AND "bugs"
415 pbp and bugs Ditto
416 bugs + cosmetic All policies that are "bugs" OR "cosmetic"
418 bugs or cosmetic Ditto
419 pbp - cosmetic All policies that are "pbp" BUT NOT "cosmetic"
421 pbp not cosmetic Ditto
422 -maintenance All policies that are NOT "maintenance"
424 not maintenance Ditto
425 (pbp - bugs) * complexity All policies that are "pbp" BUT NOT "bugs",
427 AND "complexity"
428 (pbp not bugs) and complexity Ditto
429 Theme names are case-insensitive. If "-theme" is set to an empty
431 string, then it is equivalent to the set of all Policies. A theme name
432 that doesn't exist is equivalent to an empty set. Please See
433 <http://en.wikipedia.org/wiki/Set> for a discussion on set theory.
434
436 Perl::Critic::OptionsProcessor, Perl::Critic::UserProfile
437
439 Jeffrey Ryan Thalhammer <thaljef@cpan.org>
440
442 Copyright (c) 2005-2009 Jeffrey Ryan Thalhammer. All rights reserved.
443 This program is free software; you can redistribute it and/or modify it
445 under the same terms as Perl itself. The full text of this license can
446 be found in the LICENSE file included with this module.
447perl v5.12.1 2010-09-08 Perl::Critic::Config(3)