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use strict; |
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use warnings; |
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no indirect; |
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=head1 NAME |
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REFECO::Blockchain::Contract::Solidity::ABI::Decoder - Contract Application Binary Interface argument decoder |
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=head1 VERSION |
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Version 0.001 |
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=cut |
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our $VERSION = '0.001'; |
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=head1 SYNOPSIS |
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The Contract Application Binary Interface (ABI) is the standard way to interact |
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with contracts (Ethereum), this module aims to be an utility to encode the given |
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data according ABI type specification. |
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my $decoder = REFECO::Blockchain::Contract::Solidity::ABI::Decoder->new(); |
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$decoder |
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->append('uint256') |
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->append('bytes[]') |
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->decode('0x...'); |
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... |
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=head1 AUTHOR |
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Reginaldo Costa, C<< <refeco at cpan.org> >> |
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=head1 BUGS |
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Please report any bugs or feature requests to C<bug-refeco-blockchain-smartcontracts-solidity-abi-encoder at rt.cpan.org>, or through |
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the web interface at L<https://rt.cpan.org/NoAuth/ReportBug.html?Queue=REFECO-Blockchain-Contract-Solidity-ABI-Encoder>. I will be notified, and then you'll |
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automatically be notified of progress on your bug as I make changes. |
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=head1 SUPPORT |
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You can find documentation for this module with the perldoc command. |
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perldoc REFECO::Blockchain::Contract::Solidity::ABI::Decoder |
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You can also look for information at: |
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=over 4 |
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=item * RT: CPAN's request tracker (report bugs here) |
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L<https://rt.cpan.org/NoAuth/Bugs.html?Dist=REFECO-Blockchain-Contract-Solidity-ABI-Encoder> |
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=item * CPAN Ratings |
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L<https://cpanratings.perl.org/d/REFECO-Blockchain-Contract-Solidity-ABI-Encoder> |
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=item * Search CPAN |
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L<https://metacpan.org/release/REFECO-Blockchain-Contract-Solidity-ABI-Encoder> |
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=back |
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=head1 ACKNOWLEDGEMENTS |
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=head1 LICENSE AND COPYRIGHT |
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This software is Copyright (c) 2022 by Reginaldo Costa. |
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74
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This is free software, licensed under: |
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The Artistic License 2.0 (GPL Compatible) |
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=cut |
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80
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use Carp; |
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1
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1
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use REFECO::Blockchain::Contract::Solidity::ABI::Type; |
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1
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2
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1
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63
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82
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1
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1
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use REFECO::Blockchain::Contract::Solidity::ABI::Type::Tuple; |
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1
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3
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1
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36
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83
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1
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1
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367
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1
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14
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1
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383
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84
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my ($class, %params) = @_; |
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86
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1
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1
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0
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my $self = {}; |
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bless $self, $class; |
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1
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3
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return $self; |
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1
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3
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} |
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1
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4
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91
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my $self = shift; |
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return $self->{instances} //= []; |
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} |
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15
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15
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0
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23
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95
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15
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100
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my $self = shift; |
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return $self->{data}; |
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} |
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0
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0
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0
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0
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=head2 append |
100
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0
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0
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101
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Appends type signature |
102
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103
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=over 4 |
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105
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=item * C<%param> type signature |
106
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107
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=back |
108
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109
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return same L<REFECO::Blockchain::Contract::Solidity::ABI::Decoder> instance |
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111
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=cut |
112
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113
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my ($self, $param) = @_; |
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115
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push $self->instances->@*, REFECO::Blockchain::Contract::Solidity::ABI::Type::new_type(signature => $param); |
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return $self; |
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} |
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8
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8
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1
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119
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=head2 encode |
120
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8
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21
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121
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8
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36
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Decodes all appended type signatures |
122
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123
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=over 4 |
124
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125
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=back |
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127
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Array ref containing all decoded values |
128
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129
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=cut |
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131
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my ($self, $hex_data) = @_; |
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133
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croak 'Invalid hexadecimal value ' . $hex_data // 'undef' |
134
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unless $hex_data =~ /^(?:0x|0X)?([a-fA-F0-9]+)$/; |
135
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136
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my $hex = $1; |
137
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7
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7
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0
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16
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my @data = unpack("(A64)*", $hex); |
138
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139
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7
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0
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49
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my $tuple = REFECO::Blockchain::Contract::Solidity::ABI::Type::Tuple->new; |
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$tuple->{instances} = $self->instances; |
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$tuple->{data} = \@data; |
142
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7
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26
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return $tuple->decode; |
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7
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45
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} |
144
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145
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7
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36
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=head2 clean |
146
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7
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18
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147
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7
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13
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Clean all the appended type signatures |
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7
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41
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149
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=over 4 |
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151
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=back |
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153
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undef |
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155
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=cut |
156
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157
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my $self = shift; |
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delete $self->{instances}; |
159
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} |
160
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161
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1; |
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