PPIx::Regexp::Dumper(3)
NAME
PPIx::Regexp::Dumper - Dump the results of parsing regular expressions
SYNOPSIS
use PPIx::Regexp::Dumper;
PPIx::Regexp::Dumper->new( 'qr{foo}smx' )
->print();
INHERITANCE
"PPIx::Regexp::Dumper" is a PPIx::Regexp::Support.
"PPIx::Regexp::Dumper" has no descendants.
DESCRIPTION
This class generates a formatted dump of a PPIx::Regexp::Element object
(or any subclass thereof), a PPIx::Regexp::Tokenizer object, or a
string that can be made into one of these.
METHODS
This class provides the following public methods. Methods not
documented here are private, and unsupported in the sense that the
author reserves the right to change or remove them without notice.
new
my $dumper = PPIx::Regexp::Dumper->new(
'/foo/', ordinal => 1,
);
This static method instantiates the dumper. It takes the string,
PPI::Element, PPIx::Regexp::Element, or PPIx::Regexp::Tokenizer to be
dumped as the first argument. Optional further arguments may be passed
as name/value pairs.
The following options are recognized:
default_modifiers array_reference
This argument is a reference to a list of default modifiers to be
applied to the statement being parsed. See PPIx::Regexp new() for
the details.
encoding name
This argument is the name of the encoding of the regular
expression. If specified, it is passed through to
PPIx::Regexp->new(). It also causes an "Encode::encode" to be done
on any parse content dumped.
explain boolean
If true, this option causes the "explain()" output of each object
to be dumped.
indent number
This argument is the number of additional spaces to indent each
level of the parse hierarchy. This is ignored if either the "test"
or "tokens" argument is true.
The default is 2.
margin number
This is the number of spaces to indent the top level of the parse
hierarchy. This is ignored if the "test" argument is true.
The default is zero.
ordinal boolean
If true, this option causes the "ordinal" values of
PPIx::Regexp::Token::Literal objects to be dumped.
perl_version boolean
If true, this option causes the "perl_version_introduced" and
"perl_version_removed" values associated with each object dumped to
be displayed.
postderef boolean
If true, postfix dereferences are recognized in code and
interpolations. See the tokenizer's new() for details.
strict boolean
This option is passed on to the parser, where it specifies whether
the parse should assume "use re 'strict'" is in effect.
The 'strict' pragma was introduced in Perl 5.22, and its
documentation says that it is experimental, and that there is no
commitment to backward compatibility. The same applies to the parse
produced when this option is asserted.
The default is false.
significant boolean
If true, this option causes only significant elements to be dumped.
The default is false.
test boolean
If true, this option causes the output to be formatted as a
regression test rather than as a straight dump. The output produced
by asserting this option is explicitly undocumented, in the sense
that the author reserves the right to change the generated output
without notice of any kind.
The default is false.
tokens boolean
If true, this option causes a dump of tokenizer output rather than
of a full parse of the regular expression. This is forced true if
the dump is of a PPIx::Regexp::Tokenizer.
The default is false.
trace number
If greater than zero, this option causes a trace of the parse. This
option is unsupported in the sense that the author reserves the
right to change it without notice.
The default is zero.
verbose number
If greater than zero, this option causes additional information to
be given about the elements found. This option is unsupported in
the sense that the author reserves the right to change it without
notice.
The default is zero.
If the thing to be dumped was a string, unrecognized arguments are
passed to "PPIx::Regexp::Tokenizer->new()". Otherwise they are ignored.
list
print map { "$_\n" } $dumper->list();
This method produces an array containing the dump output, one line per
element. The output has no left margin applied, and no newlines.
print
$dumper->print();
This method simply prints the result of "string" to standard out.
string
print $dumper->string();
This method adds left margin and newlines to the output of "list",
concatenates the result into a single string, and returns that string.
SUPPORT
Support is by the author. Please file bug reports at
<http://rt.cpan.org>, or in electronic mail to the author.
AUTHOR
Thomas R. Wyant, III wyant at cpan dot org
COPYRIGHT AND LICENSE
Copyright (C) 2009-2019 by Thomas R. Wyant, III
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl 5.10.0. For more details, see the full
text of the licenses in the directory LICENSES.
This program is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of
merchantability or fitness for a particular purpose.
perl v5.28.1 2019-04-04 PPIx::Regexp::Dumper(3)
ppix-regexp 0.64.0 - Generated Thu Apr 4 15:59:29 CDT 2019