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package App::PRT::Command::AddMethod;
use strict;
use warnings;
use PPI;
# Internal command to add method to file
sub new {
my ($class) = @_;
bless {
code => undef,
}, $class;
}
# register a method
# arguments:
# $code: Source code string of method to add
sub register {
my ($self, $code) = @_;
$self->{code} = $code;
}
sub code {
my ($self) = @_;
$self->{code};
}
# refactor a file
# argumensts:
# $file: filename for refactoring
sub execute {
my ($self, $file) = @_;
my $document = PPI::Document->new($file);
my $statements = $document->find('PPI::Statement');
die 'statement not found' unless $statements;
my $after = $statements->[-1];
my $code_document = PPI::Document->new(\$self->code);
my $code_statement = $code_document->find_first('PPI::Statement::Sub');
my @comments;
my $cursor = $code_statement->first_token->previous_token;
while (defined $cursor && (ref $cursor eq 'PPI::Token::Comment' || ref $cursor eq 'PPI::Token::Whitespace')) {
unshift @comments, $cursor;
$cursor = $cursor->previous_token;
}
while (ref $comments[0] eq 'PPI::Token::Whitespace') {
shift @comments;
}
$after->insert_before($_) for @comments;
$after->insert_before($code_statement);
my $whitespaces_document = PPI::Document->new(\"\n\n");
$after->insert_before($_) for @{ $whitespaces_document->find('PPI::Token') };
$document->save($file);
}
1;
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