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authorAndreas Brachold <vdr07@deltab.de>2007-11-10 17:53:53 +0000
committerAndreas Brachold <vdr07@deltab.de>2007-11-10 17:53:53 +0000
commitcfdd733c17cfa4f1a43b827a656e9e53cc2524ac (patch)
treeb6f659b1281f77628b36768f0888f67b65f9ca48 /lib/Class/MakeMethods/Template/StructBuiltin.pm
parent9c6c30350161efd74faa3c3705096aecb71c0e81 (diff)
downloadxxv-cfdd733c17cfa4f1a43b827a656e9e53cc2524ac.tar.gz
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* Remove unsed packages
* Reorder exit routines
Diffstat (limited to 'lib/Class/MakeMethods/Template/StructBuiltin.pm')
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1 files changed, 0 insertions, 148 deletions
diff --git a/lib/Class/MakeMethods/Template/StructBuiltin.pm b/lib/Class/MakeMethods/Template/StructBuiltin.pm
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--- a/lib/Class/MakeMethods/Template/StructBuiltin.pm
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-package Class::MakeMethods::Template::StructBuiltin;
-
-use Class::MakeMethods::Template::Generic '-isasubclass';
-
-$VERSION = 1.008;
-use strict;
-require 5.00;
-use Carp;
-
-=head1 NAME
-
-Class::MakeMethods::Template::StructBuiltin
-
-=head1 SYNOPSIS
-
- use Class::MakeMethods::Template::StructBuiltin (
- -TargetClass => 'MyStat',
- builtin_isa => [
- '-{new_function}'=>'stat',
- qw/ dev ino mode nlink /
- ]
- );
-
-
-=head1 DESCRIPTION
-
-This class generates a wrapper around some builtin function,
-storing the results in the object and providing a by-name interface.
-
-Takes a (core) function name, and a arrayref of return position names
-(we will call it pos_list). Creates:
-
-=over 4
-
-=item new
-
-Calls the core func with any given arguments, stores the result in the
-instance.
-
-=item x
-
-For each member of pos_list, creates a method of the same name which
-gets/sets the nth member of the returned list, where n is the position
-of x in pos_list.
-
-=item fields
-
-Returns pos_list, in the given order.
-
-=item dump
-
-Returns a list item name, item value, in order.
-
-=back
-
-Example Usage:
-
- package Stat;
-
- use Class::MakeMethods::Template::StructBuiltin
- builtin_isa => [ '-{new_function}'=>'stat', qw/ dev ino mode nlink / ],
-
- package main;
-
- my $file = "$ENV{HOME}/.template";
- my $s = Stat->new($file);
- print "File $file has ", $s->nlink, " links\n";
-
-Note that (a) the new method does not check the return value of the
-function called (in the above example, if $file does not exist, you will
-silently get an empty object), and (b) if you really want the above
-example, see the core File::stat module. But you get the idea, I hope.
-
-=cut
-
-sub builtin_isa {
- ( {
- 'template' => {
- default => {
- '*'=>'get_set', 'dump'=>'dump', 'fields'=>'fields', 'new'=>'new_builtin'
- },
- },
- 'behavior' => {
- '-init' => sub {
- my $m_info = $_[0];
-
- $m_info->{class} ||= $m_info->{target_class};
-
- my $class_info =
- ( $Class::MakeMethods::Struct::builtin{$m_info->{class}} ||= [] );
- if ( ! defined $m_info->{array_index} ) {
- foreach ( 0..$#$class_info ) {
- if ( $class_info->[$_] eq $m_info->{'name'} ) {
- $m_info->{array_index} = $_; last }
- }
- if ( ! defined $m_info->{array_index} ) {
- push @ $class_info, $m_info->{'name'};
- $m_info->{array_index} = $#$class_info;
- }
- }
-
- if (defined $m_info->{new_function} and ! ref $m_info->{new_function}) {
- # NOTE Below comments found in original version of MethodMaker. -Simon
- # Cuz neither \&{"CORE::$func"} or $CORE::{$func} work ... N.B. this
- # only works for core functions that take only one arg. But I can't
- # quite figure out how to pass in the list without it getting
- # evaluated in a scalar context. Hmmm.
- $m_info->{new_function} = eval "sub {
- scalar \@_ ? CORE::$m_info->{new_function}(shift)
- : CORE::$m_info->{new_function}
- }";
- }
-
- return;
- },
-
- 'new_builtin' => sub { my $m_info = $_[0]; sub {
- my $class = shift;
- my $function = $m_info->{new_function};
- my $self = [ &$function(@_) ];
- bless $self, $class;
- }},
-
- 'fields' => sub { my $m_info = $_[0]; sub {
- my $class_info =
- ( $Class::MakeMethods::Struct::builtin{$m_info->{class}} ||= [] );
- @$class_info;
- }},
- 'dump' => sub { my $m_info = $_[0]; sub {
- my $self = shift;
- my $class_info =
- ( $Class::MakeMethods::Struct::builtin{$m_info->{class}} ||= [] );
- my @keys = @$class_info;
- map ($keys[$_], $self->[$_]), 0 .. $#keys;
- }},
-
- 'get_set' => sub { my $m_info = $_[0]; sub {
- my $self = shift;
- if ( @_ ) {
- $self->[ $m_info->{array_index} ] = shift;
- }
- $self->[ $m_info->{array_index} ];
- }},
- },
- } )
-}
-
-1;