DOKK / manpages / debian 12 / libffi-platypus-perl / FFI::Platypus::TypeParser::Version0.3pm.en
FFI::Platypus::TypeParser::Version0(3pm) User Contributed Perl Documentation FFI::Platypus::TypeParser::Version0(3pm)

FFI::Platypus::TypeParser::Version0 - FFI Type Parser Version Zero

version 2.05

 use FFI::Platypus;
 my $ffi = FFI::Platypus->new( api => 0 );
 $ffi->type('record(Foo::Bar)' => 'foo_bar_t');
 $ffi->type('opaque' => 'baz_t');
 $ffi->type('opaque*' => 'baz_ptr');

This documents the original FFI::Platypus type parser. It was the default and only type parser used by FFI::Platypus starting with version 0.02. Starting with version 1.00 FFI::Platypus comes with a new type parser with design fixes that are not backward compatibility.

Originally FFI::Platypus only supported passing records as a pointer. The type "record(Foo::Bar)" actually passes a pointer to the record. In the version 1.00 parser allows "record(Foo::Bar)" which is pass-by-value (the contents of the record is copied onto the stack) and "record(Foo::Bar)*" which is pass-by-reference or pointer (a pointer to the record is passed to the callee so that it can make modifications to the record).

TL;DR "record(Foo::Bar)" in version 0 is equivalent to "record(Foo::Bar)*" in the version 1 API. There is no equivalent to "record(Foo::Bar)*" in the version 0 API.

This is not allowed in the version 0 API: 

 $ffi->type('opaque' => 'foo_t');    # ok!
 $ffi->type('foo_t*' => 'foo_ptr');  # not ok! in version 0, ok! in version 1

Instead you need to use the basic type in the second type definition:

 $ffi->type('opaque' => 'foo_t');    # ok!
 $ffi->type('opaque*' => 'foo_ptr'); # ok!
    
 $ffi->type('object(Foo::Bar)');   # not ok! in version 0, ok! in version 1

The core FFI::Platypus documentation.
The API 1.00 type parser.

Author: Graham Ollis <plicease@cpan.org>

Contributors:

Bakkiaraj Murugesan (bakkiaraj)

Dylan Cali (calid)

pipcet

Zaki Mughal (zmughal)

Fitz Elliott (felliott)

Vickenty Fesunov (vyf)

Gregor Herrmann (gregoa)

Shlomi Fish (shlomif)

Damyan Ivanov

Ilya Pavlov (Ilya33)

Petr Písař (ppisar)

Mohammad S Anwar (MANWAR)

Håkon Hægland (hakonhagland, HAKONH)

Meredith (merrilymeredith, MHOWARD)

Diab Jerius (DJERIUS)

Eric Brine (IKEGAMI)

szTheory

José Joaquín Atria (JJATRIA)

Pete Houston (openstrike, HOUSTON)

This software is copyright (c) 2015-2022 by Graham Ollis.

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

2023-01-15 perl v5.36.0