++ed by:
KARJALA AVKHOZOV SSCAFFIDI DBOOK PABLROD

27 PAUSE users
22 non-PAUSE users.

Graham Ollis 🔥🐉
and 13 contributors

NAME

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

VERSION

version 0.96

SYNOPSIS

 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');

DESCRIPTION

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.

Interface differences

Pass-by-value records are not allowed

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.

decorate aliases of basic types

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!
object types are not allowed
 $ffi->type('object(Foo::Bar)');   # not ok! in version 0, ok! in version 1

SEE ALSO

FFI::Platypus

The core FFI::Platypus documentation.

FFI::Platypus::TypeParser::Version1

The API 1.00 type parser.

AUTHOR

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 Pisar (ppisar)

Mohammad S Anwar (MANWAR)

Håkon Hægland (hakonhagland, HAKONH)

COPYRIGHT AND LICENSE

This software is copyright (c) 2015,2016,2017,2018,2019 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.