Provided by: libperl-critic-perl_1.117-1_all
Perl::Critic::Document - Caching wrapper around a PPI::Document.
use PPI::Document; use Perl::Critic::Document; my $doc = PPI::Document->new('Foo.pm'); $doc = Perl::Critic::Document->new(-source => $doc); ## Then use the instance just like a PPI::Document
Perl::Critic does a lot of iterations over the PPI document tree via the "PPI::Document::find()" method. To save some time, this class pre-caches a lot of the common "find()" calls in a single traversal. Then, on subsequent requests we return the cached data. This is implemented as a facade, where method calls are handed to the stored "PPI::Document" instance.
This facade does not implement the overloaded operators from PPI::Document (that is, the "use overload ..." work). Therefore, users of this facade must not rely on that syntactic sugar. So, for example, instead of "my $source = "$doc";" you should write "my $source = $doc-"content();> Perhaps there is a CPAN module out there which implements a facade better than we do here?
This is considered to be a public class. Any changes to its interface will go through a deprecation cycle.
"new(-source => $source_code, '-filename-override' => $filename, '-program-extensions' => [program_extensions])" Create a new instance referencing a PPI::Document instance. The $source_code can be the name of a file, a reference to a scalar containing actual source code, or a PPI::Document or PPI::Document::File. In the event that $source_code is a reference to a scalar containing actual source code or a PPI::Document, the resulting Perl::Critic::Document will not have a filename. This may cause Perl::Critic::Document to incorrectly classify the source code as a module or script. To avoid this problem, you can optionally set the "-filename-override" to force the Perl::Critic::Document to have a particular $filename. Do not use this option if $source_code is already the name of a file, or is a reference to a PPI::Document::File. The '-program-extensions' argument is optional, and is a reference to a list of strings and/or regular expressions. The strings will be made into regular expressions matching the end of a file name, and any document whose file name matches one of the regular expressions will be considered a program. If -program-extensions is not specified, or if it does not determine the document type, the document will be considered to be a program if the source has a shebang line or its file name (if any) matches "m/ [.] PL \z /smx".
"ppi_document()" Accessor for the wrapped PPI::Document instance. Note that altering this instance in any way can cause unpredictable failures in Perl::Critic's subsequent analysis because some caches may fall out of date. "find($wanted)" "find_first($wanted)" "find_any($wanted)" Caching wrappers around the PPI methods. If $wanted is a simple PPI class name, then the cache is employed. Otherwise we forward the call to the corresponding method of the "PPI::Document" instance. "namespaces()" Returns a list of the namespaces (package names) in the document. "subdocuments_for_namespace($namespace)" Returns a list of sub-documents containing the elements in the given namespace. For example, given that the current document is for the source foo(); package Foo; package Bar; package Foo; this method will return two Perl::Critic::Documents for a parameter of "Foo". For more, see "split_ppi_node_by_namespace" in PPIx::Utilities::Node. "ppix_regexp_from_element($element)" Caching wrapper around "PPIx::Regexp->new($element)". If $element is a "PPI::Element" the cache is employed, otherwise it just returns the results of "PPIx::Regexp->new()". In either case, it returns "undef" unless the argument is something that PPIx::Regexp actually understands. "element_is_in_lexical_scope_after_statement_containing( $inner, $outer )" Is the $inner element in lexical scope after the statement containing the $outer element? In the case where $outer is itself a scope-defining element, returns true if $outer contains $inner. In any other case, $inner must be after the last element of the statement containing $outer, and the innermost scope for $outer also contains $inner. This is not the same as asking whether $inner is visible from $outer. "filename()" Returns the filename for the source code if applicable (PPI::Document::File) or "undef" otherwise (PPI::Document). "isa( $classname )" To be compatible with other modules that expect to get a PPI::Document, the Perl::Critic::Document class masquerades as the PPI::Document class. "highest_explicit_perl_version()" Returns a version object for the highest Perl version requirement declared in the document via a "use" or "require" statement. Returns nothing if there is no version statement. "uses_module($module_or_pragma_name)" Answers whether there is a "use", "require", or "no" of the given name in this document. Note that there is no differentiation of modules vs. pragmata here. "process_annotations()" Causes this Document to scan itself and mark which lines & policies are disabled by the "## no critic" annotations. "line_is_disabled_for_policy($line, $policy_object)" Returns true if the given $policy_object or $policy_name has been disabled for at $line in this Document. Otherwise, returns false. "add_annotation( $annotation )" Adds an $annotation object to this Document. "annotations()" Returns a list containing all the Perl::Critic::Annotations that were found in this Document. "add_suppressed_violation($violation)" Informs this Document that a $violation was found but not reported because it fell on a line that had been suppressed by a "## no critic" annotation. Returns $self. "suppressed_violations()" Returns a list of references to all the Perl::Critic::Violations that were found in this Document but were suppressed. "is_program()" Returns whether this document is considered to be a program. "is_module()" Returns whether this document is considered to be a Perl module.
Chris Dolan <firstname.lastname@example.org>
Copyright (c) 2006-2011 Chris Dolan. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module.