/ 
Sub-Meta-0.14
River stage one • 1 direct dependent • 1 total dependent
/ Sub::Meta::Returns

NAME

Sub::Meta::Returns - meta information about return values

SYNOPSIS

use Sub::Meta::Returns;

my $r = Sub::Meta::Returns->new(
    scalar  => 'Int',      # optional
    list    => 'ArrayRef', # optional
    void    => 'Void',     # optional
);

$r->scalar; # 'Int'
$r->list;   # 'ArrayRef'
$r->void;   # 'Void'

METHODS

new

Constructor of Sub::Meta::Returns.

ACCESSORS

scalar

A type for value when called in scalar context.

scalar
method scalar() => Maybe[Any]
has_scalar
method has_scalar() => Bool

Whether Sub::Meta::Returns has scalar type or not.

set_scalar($type)
method set_scalar(Any $type) $self

Setter for scalar.

list

A type for value when called in list context.

list
method list() => Maybe[Any]
has_list
method has_list() => Bool

Whether Sub::Meta::Returns has list type or not.

set_list($type)
method set_list(Any $type) => $self

Setter for list.

void

A type for value when called in void context.

void
method void() => Maybe[Any]
has_void
method has_void() => Bool

Whether Sub::Meta::Returns has void type or not.

set_void($type)
method set_void(Any $type) => $self

Setter for void.

coerce

coercions.

coerce
method coerce() => Maybe[Any]
has_coerce
method has_coerce() => Bool

Whether Sub::Meta::Returns has coercions or not.

set_coerce($bool)
method set_coerce(Bool $bool) => $self

Setter for coerce.

METHODS

is_same_interface($other_meta)

method is_same_interface(InstanceOf[Sub::Meta::Returns] $other_meta) => Bool

A boolean value indicating whether Sub::Meta::Returns object is same or not. Specifically, check whether scalar, list and void are equal.

is_relaxed_same_interface($other_meta)

method is_relaxed_same_interface(InstanceOf[Sub::Meta::Returns] $other_meta) => Bool

A boolean value indicating whether Sub::Meta::Returns object is same or not. Specifically, check whether scalar, list and void are satisfy the condition of $self side:

my $meta = Sub::Meta::Returns->new(scalar => 'Str')
my $other = Sub::Meta::Returns->new(scalar => 'Str', list => 'Int');
$meta->is_same_interface($other); # NG
$meta->is_relaxed_same_interface($other); # OK. The reason is that $meta does not specify the list type.

is_same_interface_inlined($other_meta_inlined)

method is_same_interface_inlined(InstanceOf[Sub::Meta::Returns] $other_meta) => Str

Returns inlined is_same_interface string.

is_relaxed_same_interface_inlined($other_meta_inlined)

method is_relaxed_same_interface_inlined(InstanceOf[Sub::Meta::Returns] $other_meta) => Str

Returns inlined is_relaxed_same_interface string.

error_message($other_meta)

method error_message(InstanceOf[Sub::Meta::Returns] $other_meta) => Str

Return the error message when the interface is not same. If same, then return empty string.

relaxed_error_message($other_meta)

method relaxed_error_message(InstanceOf[Sub::Meta::Returns] $other_meta) => Str

Return the error message when the interface does not satisfy the $self meta. If match, then return empty string.

display

method display() => Str

Returns the display of Sub::Meta::Returns:

use Sub::Meta::Returns;
use Types::Standard qw(Tuple Str);
my $meta = Sub::Meta::Returns->new(Tuple[Str,Str]);
$meta->display; # 'Tuple[Str,Str]'

LICENSE

Copyright (C) kfly8.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

kfly8 <kfly@cpan.org>