NAME

Blockchain::Ethereum::ABI - ABI utility for encoding/decoding ethereum contract arguments

VERSION

version 0.015

SYNOPSIS

The Contract Application Binary Interface (ABI) is the standard way to interact with contracts (Ethereum), this module aims to be an utility to encode/decode the given data according ABI type specification.

Supports:

• address
• bool
• bytes(\d+)?
• (u)?int(\d+)?
• string
• tuple

Also arrays ((\[(\d+)?\])+)? for the above mentioned types.

Encoding:

my $encoder = Blockchain::Ethereum::ABI::Encoder->new();
$encoder->function('test')
    # string
    ->append(string => 'Hello, World!')
    # bytes
    ->append(bytes => unpack("H*", 'Hello, World!'))
    # tuple
    ->append('(uint256,address)' => [75000000000000, '0x0000000000000000000000000000000000000000'])
    # arrays
    ->append('bool[]', [1, 0, 1, 0])
    # multidimensional arrays
    ->append('uint256[][][2]', [[[1]], [[2]]])
    # tuples arrays and tuples inside tuples
    ->append('((int256)[2])' => [[[1], [2]]])->encode;

Decoding

my $decoder = Blockchain::Ethereum::ABI::Decoder->new();
$decoder
    ->append('uint256')
    ->append('bytes[]')
    ->decode('0x...');

AUTHOR

Reginaldo Costa refeco@cpan.org

COPYRIGHT AND LICENSE

This software is Copyright (c) 2022 by REFECO.

This is free software, licensed under:

The MIT (X11) License