Steven Haryanto

NAME

Perinci::Declare - Some easy shortcuts for Perinci

VERSION

This document describes version 0.00 of Perinci::Declare (from Perl distribution Perinci-Declare), released on 2014-07-05.

SYNOPSIS

 package YourPackage;
 use Perinci::Declare;

 meta {
     summary 'This package is for doing blah';
     description 'blah blah ...';
 };

 sub sub1 {
     meta {
         summary 'This function is for doing blah';
         description 'blah blah ...';
         arg arg1 => (schema => 'int*', req => 1, pos => 0);
         arg arg2 => (schema => [array => of => 'str*']),
     };
     my ($arg1, $arg2) = @_;
     ...
 }

 sub sub2 {
     meta { ... }
     ...
 }

 ...
 1;

DESCRIPTION

NOT YET IMPLEMENTED.

EXPERIMENTAL, SYNTAX *WILL* CHANGE.

This module is an experiment to provide some syntactic sugar for declaring Rinci metadata to your code entities.

As we know, Rinci metadata is put in %SPEC package variables:

 package YourPackage;

 our %SPEC:

 $SPEC{':package'} = {
     summary => 'THis package is for doing blah',
     description => 'Blah blah ...',
 };

 $SPEC{sub1} = {
     v => 1.1,
     summary => "This function is for doing blah",
     description => 'blah blah ...',
     args => {
         arg1 => { schema => 'int*', req => 1, pos => 0 },
         arg2 => { schema => [array => of => 'str'] },
     },
     args_as => "array",
     result_naked => 1,
 };
 sub sub1 {
     my ($arg1, $arg2) = @_;
     ...
 }

 $SPEC{sub2} = { ... }:
 sub sub2 {
     ...
 }

 ...
 1;

This module tries to provide some syntactic sugar.

How does it work? Using Devel::Declare, it will change the meta():

 sub sub1 {
     meta {
         ...
     };
 }

to run in BEGIN block (much like how Begin::Declare works). meta() will check its caller, if it is inside a sub, it will set subroutine metadata. Otherwise, it will set package metadata. The other types of metadata will be supported in the future.

This will not add overhead during runtime, as the BEGIN block will no longer be evaluated.

ALTERNATIVE SYNTAXES

Alternative 1

Instead of accepting a code block, meta can add a hash where you specify the metadata directly. This is easier and all Rinci properties are supported.

 sub sub1 {
     meta {
         v => 1.1,
         summary => '...',
         ...
     };
 }

KEYWORDS

meta

summary

description

arg

SEE ALSO

Perinci

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Perinci-Declare.

SOURCE

Source repository is at https://github.com/sharyanto/perl-Perinci-Declare.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Perinci-Declare

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

AUTHOR

Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2014 by Steven Haryanto.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.