NAME
Text::Find::Scalar - Find scalar names in a text.
SYNOPSIS
use Text::Find::Variable;
my $finder = Text::Find::Variable->new();
my $arrayref = $finder->find($string);
# or
$finder->find($string);
while($finder->hasNext()){
print $finder->nextElement();
}DESCRIPTION
This Class helps to find all Scalar variables in a text. It is recommended to use PPI to parse Perl programs. This module should help to find SCALAR names e.g. in Error messages.
Scalars that should be found:
double quoted
"$foo"references
$foo->{bar}elements of arrays
$array[0]
Scalars that are not covered
single quoted
'$foo'
EXAMPLE
#!/usr/bin/perl
use strict;
use warnings;
use Text::Find::Scalar;
my $string = q~This is a $variable
another $variable and another "$eine", but '$no' is not found.
A $reference->{$key} is found. An array element $array[0]
is also found~;
my $finder = Text::Find::Scalar->new();
my @scalars = $finder->find($string);
print $_,"\n" for(@scalars);prints
/homes/reneeb/community>find_scalar.pl
$variable
$variable
$eine
$reference->{$key}
$array[0]METHODS
new
my $finder = Text::Find::Scalar->new();creates a new Text::Find::Scalar object.
find
my $string = q~Test $test $foo '$bar'~;
my $arrayref = $finder->find($string);
my @found = $finder->find($string);parses the text and returns an arrayref that contains all matches.
hasNext
while($finder->hasNext()){
print $finder->nextElement();
}returns 1 unless the user walked through all matches.
nextElement
print $finder->nextElement();
print $finder->nextElement();returns the next element in list.
unique
my $uniquenames = $finder->unique();returns an arrayref with a list of all scalars, but each match appears just once.
count
my $counter = $finder->count('$foo');returns the number of appearances of one scalar.
"private" methods
_Elements
returns an arrayref of all scalars found in the text
_Counter
AUTHOR
Renee Baecker, <module@renee-baecker.de>
COPYRIGHT AND LICENSE
Copyright (C) 2006 by Renee Baecker
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.6 or, at your option, any later version of Perl 5 you may have available.