/ 
FFI-Platypus-Lang-Go-0.01
River stage zero No dependents
/ FFI::Platypus::Lang::Go

NAME

FFI::Platypus::Lang::Go - Documentation and tools for using Platypus with Go

VERSION

version 0.01

SYNOPSIS

Go code:

/*
 * borrowed from
 * https://medium.com/learning-the-go-programming-language/calling-go-functions-from-other-languages-4c7d8bcc69bf
 */

package main

import "C"

import (
	"fmt"
	"math"
	"sort"
	"sync"
)

var count int
var mtx sync.Mutex

//export Add
func Add(a, b int) int { return a + b }

//export Cosine
func Cosine(x float64) float64 { return math.Cos(x) }

//export Sort
func Sort(vals []int) { sort.Ints(vals) }

//export Log
func Log(msg string) int {
	mtx.Lock()
	defer mtx.Unlock()
	fmt.Println(msg)
	count++
	return count
}

func main() {}

Perl code:

package Awesome::FFI;

use strict;
use warnings;
use FFI::Platypus;
use FFI::Go::String;
use base qw( Exporter );

our @EXPORT_OK = qw( Add Cosine Log );

my $ffi = FFI::Platypus->new( api => 1, lang => 'Go' );
# See FFI::Platypus::Bundle for the how and why
# bundle works.
$ffi->bundle;

$ffi->attach( Add    => ['goint','goint'] => 'goint'     );
$ffi->attach( Cosine => ['gofloat64'    ] => 'gofloat64' );
$ffi->attach( Log    => ['gostring'     ] => 'goint'     );

1;

DESCRIPTION

This distribution is the Go language plugin for Platypus. It provides the definition for native Go types, like goint and gostring. It also provides a FFI::Build interface for building Perl extensions written in Go.

For a full working example based on the synopsis above, including support files like Makefile.PL and tests, see the examples/Awesome-FFI directory that came with this distribution.

SEE ALSO

FFI::Platypus

More about FFI and Platypus itself.

FFI::Platypus::Type::GoString

Type plugin for the go string type.

FFI::Go::String

Low level interface to the go string type.

FFI::Build::File::GoMod

FFI::Build class for handling Go modules.

AUTHOR

Graham Ollis <plicease@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 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.