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package CType::Ref;
use 5.6.0;
use strict;
use warnings;
use Carp;
use CType;
no warnings 'recursion';
our @ISA = qw/CType/;
my @refs;
sub new
{
my $this = shift;
my $class = ref($this) || $this;
my $kind = shift;
my $name = shift;
my $namespace = shift;
my $self = {kind => $kind,
name => $name,
type => undef,
};
bless $self, $class;
$self->do_complete($namespace) if $namespace;
push @refs, $self unless $self->{type};
return $self;
}
sub kind
{
my $self = shift;
return $self->{kind};
}
sub name
{
my $self = shift;
return $self->{name};
}
sub complete_refs
{
my $namespace = shift;
$_->do_complete($namespace) foreach @refs;
@refs = ();
}
sub do_complete
{
my $self = shift;
my $namespace = shift;
$self->{type} = $namespace->get($self->{kind}, $self->{name});
}
sub complete
{
my $self = shift;
return $self->{type} ? $self->{type}->complete : 0;
}
sub best_type_for_comparison
{
my $self = shift;
return $self unless $self->{type};
if ($self->{kind} eq 'ordinary')
{
# We look through typedefs, so that we can compare 'int' and
# 'foo', where 'typedef int foo'
return $self->{type}->best_type_for_comparison;
}
else
{
# We don't look through anything else, because 'int' and
# 'struct foo' are always a mismatch
return $self;
}
}
sub type
{
my $self = shift;
my $accept_incomplete = shift;
unless ($self->{type})
{
return undef if $accept_incomplete;
confess "$self->{kind} $self->{name} is incomplete";
}
return $self->{type}->type($accept_incomplete);
}
sub describe
{
my $self = shift;
my $qualifiers = $self->describe_qualifiers;
$qualifiers .= ' ' if $qualifiers;
my $str = $qualifiers;
if ($self->{kind} eq 'ordinary')
{
$str .= $self->{name};
}
else
{
$str .= "$self->{kind} $self->{name}";
}
return $str;
}
sub dump_c
{
my $self = shift;
my $skip_cpp = shift;
my $qualifiers = $self->dump_c_qualifiers;
my $str = '';
if ($self->{kind} eq 'ordinary')
{
$str .= $self->{name};
}
else
{
$str .= "$self->{kind} $self->{name}";
}
$str .= ' ' . $qualifiers if $qualifiers;
return $str;
}
sub layout
{
my $self = shift;
my $accept_incomplete = shift;
my $namespace = shift;
# It's possible for us to get loops here, so we break cycles
return if $self->{laying_out};
$self->{laying_out} = 1;
my $type = $self->type($accept_incomplete);
$type->layout($accept_incomplete, $namespace) if $type;
$self->{laying_out} = 0;
}
sub _check_interface
{
my $self = shift;
my $other = shift;
return 'both' unless $other->isa('CType::Ref');
return 'both' if $self->{kind} ne $other->{kind};
return 'both' if $self->{name} ne $other->{name};
return 'ok';
}
sub get_refs
{
my $self = shift;
return ($self);
}
sub width
{
my $self = shift;
return $self->type->width;
}
sub alignment
{
my $self = shift;
return $self->type->alignment;
}
sub alignment_exprs
{
my $self = shift;
return $self->type->alignment_exprs;
}
sub signed
{
my $self = shift;
return $self->type->signed;
}
1;
|
