Specio::Constraint::Parameterizable(3)     User Contributed Perl Documentation


NAME
       Specio::Constraint::Parameterizable - A class which represents
       parameterizable constraints

VERSION
       version 0.53

SYNOPSIS
           my $arrayref = t('ArrayRef');

           my $arrayref_of_int = $arrayref->parameterize( of => t('Int') );

DESCRIPTION
       This class implements the API for parameterizable types like "ArrayRef"
       and "Maybe".

API
       This class implements the same API as Specio::Constraint::Simple, with
       a few additions.

   Specio::Constraint::Parameterizable->new(...)
       This class's constructor accepts two additional parameters:

       o   parameterized_constraint_generator

           This is a subroutine that generates a new constraint subroutine
           when the type is parameterized.

           It will be called as a method on the type and will be passed a
           single argument, the type object for the type parameter.

           This parameter is mutually exclusive with the
           "parameterized_inline_generator" parameter.

       o   parameterized_inline_generator

           This is a subroutine that generates a new inline generator
           subroutine when the type is parameterized.

           It will be called as a method on the
           Specio::Constraint::Parameterized object when that object needs to
           generate an inline constraint. It will receive the type parameter
           as the first argument and the variable name as a string as the
           second.

           This probably seems fairly confusing, so looking at the examples in
           the Specio::Library::Builtins code may be helpful.

           This parameter is mutually exclusive with the
           "parameterized_constraint_generator" parameter.

   $type->parameterize(...)
       This method takes two arguments. The "of" argument should be an object
       which does the Specio::Constraint::Role::Interface role, and is
       required.

       The other argument, "declared_at", is optional. If it is not given,
       then a new Specio::DeclaredAt object is creating using a call stack
       depth of 1.

       This method returns a new Specio::Constraint::Parameterized object.

SUPPORT
       Bugs may be submitted at
       <https://github.com/houseabsolute/Specio/issues>.

SOURCE
       The source code repository for Specio can be found at
       <https://github.com/houseabsolute/Specio>.

AUTHOR
       Dave Rolsky <autarch@urth.org>

COPYRIGHT AND LICENSE
       This software is Copyright (c) 2012 - 2025 by Dave Rolsky.

       This is free software, licensed under:

         The Artistic License 2.0 (GPL Compatible)

       The full text of the license can be found in the LICENSE file included
       with this distribution.

perl v5.42.0                      2025-10-17
                                        Specio::Constraint::Parameterizable(3)