151 lines
3.7 KiB
Perl
151 lines
3.7 KiB
Perl
package Specio::Constraint::AnyCan;
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use strict;
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use warnings;
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our $VERSION = '0.46';
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use List::Util 1.33 ();
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use Role::Tiny::With;
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use Scalar::Util ();
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use Specio::Helpers qw( perlstring );
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use Specio::Library::Builtins;
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use Specio::OO;
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use Specio::Constraint::Role::CanType;
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with 'Specio::Constraint::Role::CanType';
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{
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my $Defined = t('Defined');
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sub _build_parent {$Defined}
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}
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{
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my $_inline_generator = sub {
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my $self = shift;
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my $val = shift;
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my $methods = join ', ', map { perlstring($_) } @{ $self->methods };
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return sprintf( <<'EOF', $val, $methods );
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(
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do {
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# We need to assign this since if it's something like $_[0] then
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# inside the all block @_ gets redefined and we can no longer get at
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# the value.
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my $v = %s;
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(
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Scalar::Util::blessed($v) || (
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defined($v)
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&& !ref($v)
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&& length($v)
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&& $v !~ /\A
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\s*
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-?[0-9]+(?:\.[0-9]+)?
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(?:[Ee][\-+]?[0-9]+)?
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\s*
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\z/xs
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# Passing a GLOB from (my $glob = *GLOB) gives us a very weird
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# scalar. It's not a ref and it has a length but trying to
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# call ->can on it throws an exception
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&& ref( \$v ) ne 'GLOB'
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)
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) && List::Util::all { $v->can($_) } %s;
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}
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)
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EOF
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};
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sub _build_inline_generator {$_inline_generator}
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}
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## no critic (Subroutines::ProhibitUnusedPrivateSubroutines)
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sub _allow_classes {1}
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## use critic
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__PACKAGE__->_ooify;
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1;
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# ABSTRACT: A class for constraints which require a class name or object with a set of methods
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__END__
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=pod
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=encoding UTF-8
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=head1 NAME
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Specio::Constraint::AnyCan - A class for constraints which require a class name or object with a set of methods
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=head1 VERSION
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version 0.46
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=head1 SYNOPSIS
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my $type = Specio::Constraint::AnyCan->new(...);
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print $_, "\n" for @{ $type->methods };
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=head1 DESCRIPTION
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This is a specialized type constraint class for types which require a class
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name or object with a defined set of methods.
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=head1 API
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This class provides all of the same methods as L<Specio::Constraint::Simple>,
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with a few differences:
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=head2 Specio::Constraint::AnyCan->new( ... )
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The C<parent> parameter is ignored if it passed, as it is always set to the
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C<Defined> type.
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The C<inline_generator> and C<constraint> parameters are also ignored. This
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class provides its own default inline generator subroutine reference.
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This class overrides the C<message_generator> default if none is provided.
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Finally, this class requires an additional parameter, C<methods>. This must be
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an array reference of method names which the constraint requires. You can also
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pass a single string and it will be converted to an array reference
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internally.
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=head2 $any_can->methods
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Returns an array reference containing the methods this constraint requires.
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=head1 ROLES
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This class does the L<Specio::Constraint::Role::IsaType>,
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L<Specio::Constraint::Role::Interface>, and L<Specio::Role::Inlinable> roles.
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=head1 SUPPORT
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Bugs may be submitted at L<https://github.com/houseabsolute/Specio/issues>.
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I am also usually active on IRC as 'autarch' on C<irc://irc.perl.org>.
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=head1 SOURCE
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The source code repository for Specio can be found at L<https://github.com/houseabsolute/Specio>.
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=head1 AUTHOR
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Dave Rolsky <autarch@urth.org>
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=head1 COPYRIGHT AND LICENSE
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This software is Copyright (c) 2012 - 2020 by Dave Rolsky.
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This is free software, licensed under:
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The Artistic License 2.0 (GPL Compatible)
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The full text of the license can be found in the
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F<LICENSE> file included with this distribution.
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=cut
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