File Coverage

blib/lib/Blockchain/Contract/Solidity/ABI/Decoder.pm

Criterion	Covered	Total	%
statement	41	41	100.0
branch	1	2	50.0
condition	2	4	50.0
subroutine	12	12	100.0
pod	2	3	66.6
total	58	62	93.5

package Blockchain::Contract::Solidity::ABI::Decoder;

use v5.26;
use strict;
use warnings;
no indirect;

use Carp;

use Blockchain::Contract::Solidity::ABI::Type;
use Blockchain::Contract::Solidity::ABI::Type::Tuple;

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

    my $self = {};
    bless $self, $class;
    return $self;
}

sub _instances {
    my $self = shift;
    return $self->{instances} //= [];
}

sub append {
    my ($self, $param) = @_;

    push $self->_instances->@*, Blockchain::Contract::Solidity::ABI::Type::new_type(signature => $param);
    return $self;
}

sub decode {
    my ($self, $hex_data) = @_;

    croak 'Invalid hexadecimal value ' . $hex_data // 'undef'
        unless $hex_data =~ /^(?:0x|0X)?([a-fA-F0-9]+)$/;

    my $hex  = $1;
    my @data = unpack("(A64)*", $hex);

    my $tuple = Blockchain::Contract::Solidity::ABI::Type::Tuple->new;
    $tuple->{instances} = $self->_instances;
    $tuple->{data}      = \@data;
    my $data = $tuple->decode;

    $self->_clean;
    return $data;
}

sub _clean {
    my $self = shift;
    delete $self->{instances};
}

1;

__END__