File Coverage

blib/lib/Wasm/Wasmtime/GlobalType.pm

Criterion	Covered	Total	%
statement	31	31	100.0
branch			n/a
condition			n/a
subroutine	11	11	100.0
pod	1	1	100.0
total	43	43	100.0

package Wasm::Wasmtime::GlobalType;

use strict;
use warnings;
use 5.008004;
use base qw( Wasm::Wasmtime::ExternType );
use Wasm::Wasmtime::FFI;
use Wasm::Wasmtime::ValType;
use Ref::Util qw( is_ref );
use Carp ();
use constant is_globaltype => 1;
use constant kind => 'globaltype';

# ABSTRACT: Wasmtime global type class
our $VERSION = '0.22'; # VERSION


$ffi_prefix = 'wasm_globaltype_';
$ffi->load_custom_type('::PtrObject' => 'wasm_globaltype_t' => __PACKAGE__);


my %mutability = (
  const => 0,
  var   => 1,
);

$ffi->attach( new => ['wasm_valtype_t','uint8'] => 'wasm_globaltype_t' => sub {
  my $xsub = shift;
  my $class = shift;
  my $ptr;
  my $owner;
  if(defined $_[0] && !is_ref($_[0]) && $_[0] =~ /^[0-9]+$/)
  {
    my($ptr, $owner) = @_;
    return bless {
      ptr => $ptr,
      owner => $owner,
    }, $class;
  }
  else
  {
    my($valtype, $mutability) = @_;
    if(ref($valtype) eq 'Wasm::Wasmtime::ValType')
    {
      $valtype = Wasm::Wasmtime::ValType->new($valtype->kind);
    }
    else
    {
      $valtype = Wasm::Wasmtime::ValType->new($valtype);
    }
    Carp::croak("mutability must be one of 'const' or 'var'") unless defined $mutability{$mutability};
    my $self = $xsub->($valtype, $mutability{$mutability});
    delete $valtype->{ptr};
    return $self;
  }
});


$ffi->attach( content => ['wasm_globaltype_t'] => 'wasm_valtype_t' => sub {
  my($xsub, $self) = @_;
  my $valtype = $xsub->($self);
  $valtype->{owner} = $self;
  $valtype;
});


my @mutability = (
  'const',
  'var',
);

$ffi->attach( mutability => ['wasm_globaltype_t'] => 'uint8' => sub {
  my($xsub, $self) = @_;
  $mutability[$xsub->($self)];
});


sub to_string
{
  my($self) = @_;
  return sprintf("(%s %s)", $self->mutability, $self->content->to_string);
}

__PACKAGE__->_cast(1);
_generate_destroy();

1;

__END__