File Coverage

blib/lib/FFI/Build/MM.pm

Criterion	Covered	Total	%
statement	154	163	94.4
branch	33	52	63.4
condition	12	30	40.0
subroutine	33	33	100.0
pod	3	14	21.4
total	235	292	80.4

package FFI::Build::MM;

use strict;
use warnings;
use 5.008004;
use Carp ();
use FFI::Build;
use JSON::PP ();
use File::Glob ();
use File::Basename ();
use File::Path ();
use File::Copy ();
use ExtUtils::MakeMaker 7.12;

# ABSTRACT: FFI::Build installer code for ExtUtils::MakeMaker
our $VERSION = '2.08'; # VERSION


sub new
{
  my($class, %opt) = @_;

  my $save = defined $opt{save} ? $opt{save} : 1;

  my $self = bless { save => $save }, $class;
  $self->load_prop;

  $self;
}


sub mm_args
{
  my($self, %args) = @_;

  if($args{DISTNAME})
  {
    $self->{prop}->{distname} ||= $args{DISTNAME};
    $self->{prop}->{share}    ||= "blib/lib/auto/share/dist/@{[ $self->distname ]}";
    $self->{prop}->{arch}     ||= "blib/arch/auto/@{[ join '/', split /-/, $self->distname ]}";
    $self->save_prop;
  }
  else
  {
    Carp::croak "DISTNAME is required";
  }


  if(my $build = $self->build)
  {
    foreach my $alien (@{ $build->alien })
    {
      next if ref $alien;
      $args{BUILD_REQUIRES}->{$alien} ||= 0;
    }
  }

  if(my $test = $self->test)
  {
    foreach my $alien (@{ $test->alien })
    {
      next if ref $alien;
      $args{TEST_REQUIRES}->{$alien} ||= 0;
    }
  }

  %args;
}

sub distname { shift->{prop}->{distname} }

sub sharedir
{
  my($self, $new) = @_;

  if(defined $new)
  {
    $self->{prop}->{share} = $new;
    $self->save_prop;
  }

  $self->{prop}->{share};
}

sub archdir
{
  my($self, $new) = @_;

  if(defined $new)
  {
    $self->{prop}->{arch} = $new;
    $self->save_prop;
  }

  $self->{prop}->{arch};
}

sub load_build
{
  my($self, $dir, $name, $install) = @_;
  return unless -d $dir;
  my($fbx) = File::Glob::bsd_glob("./$dir/*.fbx");

  my $options;
  my $platform = FFI::Build::Platform->default;

  if($fbx)
  {
    $name = File::Basename::basename($fbx);
    $name =~ s/\.fbx$//;
    $options = do {
      package FFI::Build::MM::FBX;
      our $DIR      = $dir;
      our $PLATFORM = $platform;

      # make sure we catch all of the errors
      # code copied from `perldoc -f do`
      my $return = do $fbx;
      unless ( $return  ) {
          Carp::croak( "couldn't parse $fbx: $@" ) if $@;
          Carp::croak( "couldn't do $fbx: $!" )     unless defined $return;
          Carp::croak( "couldn't run $fbx" )       unless $return;
      }

      $return;
    };
  }
  else
  {
    $name ||= $self->distname;
    $options = {
      source => ["$dir/*.c", "$dir/*.cxx", "$dir/*.cpp"],
    };
    # if we see a Go, Rust or Zig control file then we assume the
    # ffi mod is written in that language.
    foreach my $control_file ("$dir/Cargo.toml", "$dir/go.mod", "$dir/build.zig")
    {
      if(-f $control_file)
      {
        $options->{source} = [$control_file];
        last;
      }
    }
  }

  $options->{platform} ||= $platform;
  $options->{dir}      ||= ref $install ? $install->($options) : $install;
  $options->{verbose}  = 1 unless defined $options->{verbose};
  FFI::Build->new($name, %$options);
}

sub build
{
  my($self) = @_;
  $self->{build} ||= $self->load_build('ffi', undef, $self->sharedir . "/lib");
}

sub test
{
  my($self) = @_;
  $self->{test} ||= $self->load_build('t/ffi', 'test', sub {
    my($opt) = @_;
    my $buildname = $opt->{buildname} || '_build';
    "t/ffi/$buildname";
  });
}

sub save_prop
{
  my($self) = @_;
  return unless $self->{save};
  open my $fh, '>', 'fbx.json';
  print $fh JSON::PP::encode_json($self->{prop});
  close $fh;
}

sub load_prop
{
  my($self) = @_;
  return unless $self->{save};
  unless(-f 'fbx.json')
  {
    $self->{prop} = {};
    return;
  }
  open my $fh, '<', 'fbx.json';
  $self->{prop} = JSON::PP::decode_json(do { local $/; <$fh> });
  close $fh;
}

sub clean
{
  my($self) = @_;
  foreach my $stage (qw( build test ))
  {
    my $build = $self->$stage;
    $build->clean if $build;
  }
  unlink 'fbx.json' if -f 'fbx.json';
}


sub mm_postamble
{
  my($self) = @_;

  my $postamble = ".PHONY: fbx_build ffi fbx_test ffi-test fbx_clean ffi-clean\n\n";

  # make fbx_realclean ; make clean
  $postamble .= "realclean :: fbx_clean\n" .
                "\n" .
                "fbx_clean ffi-clean:\n" .
                "\t\$(FULLPERL) -MFFI::Build::MM=cmd -e fbx_clean\n\n";

  # make fbx_build; make
  $postamble .= "pure_all :: fbx_build\n" .
                "\n" .
                "fbx_build ffi:\n" .
                "\t\$(FULLPERL) -MFFI::Build::MM=cmd -e fbx_build\n\n";

  # make fbx_test; make test
  $postamble .= "subdirs-test_dynamic subdirs-test_static subdirs-test :: fbx_test\n" .
                "\n" .
                "fbx_test ffi-test:\n" .
                "\t\$(FULLPERL) -MFFI::Build::MM=cmd -e fbx_test\n\n";

  $postamble;
}

sub action_build
{
  my($self) = @_;
  my $build = $self->build;
  if($build)
  {
    my $lib = $build->build;
    if($self->archdir)
    {
      File::Path::mkpath($self->archdir, 0, oct(755));
      my $archfile = File::Spec->catfile($self->archdir, File::Basename::basename($self->archdir) . ".txt");
      open my $fh, '>', $archfile;
      my $lib_path = $lib->path;
      $lib_path =~ s/^blib\/lib\///;
      print $fh "FFI::Build\@$lib_path\n";
      close $fh;
    }
  }
  return;
}

sub action_test
{
  my($self) = @_;
  my $build = $self->test;
  $build->build if $build;
}

sub action_clean
{
  my($self) = @_;
  my $build = $self->clean;
  ();
}

sub import
{
  my(undef, @args) = @_;
  foreach my $arg (@args)
  {
    if($arg eq 'cmd')
    {
      package main;

      my $mm = sub {
        my($action) = @_;
        my $build = FFI::Build::MM->new;
        $build->$action;
      };

      no warnings 'once';

      *fbx_build = sub {
        $mm->('action_build');
      };

      *fbx_test = sub {
        $mm->('action_test');
      };

      *fbx_clean = sub {
        $mm->('action_clean');
      };
    }
  }
}

1;

__END__