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package PJVM::Class::Attribute::Code; |
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use strict; |
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use warnings; |
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use Object::Tiny qw( |
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max_stack |
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max_locals |
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code |
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exceptions_table |
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); |
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sub new_from_io { |
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my ($pkg, $io, $cp) = @_; |
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my $buff; |
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# Stack stuff |
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read $io, $buff, 4; |
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my ($max_stack, $max_locals) = unpack("nn", $buff); |
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# Number of operations |
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read $io, $buff, 4; |
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my $op_count = unpack("N", $buff); |
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# Load code |
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read $io, $buff, $op_count; |
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my $code = $buff; |
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# Exceptions stuff |
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read $io, $buff, 2; |
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my $ex_table_count = unpack("n", $buff); |
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my @exceptions_table; |
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while ($ex_table_count--) { |
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read $io, $buff, 8; |
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my ($start_pc, $end_pc, $handler_pc, $catch_type) = unpack("nnnn", $buff); |
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push @exceptions_table, [$start_pc, $end_pc, $handler_pc, $catch_type]; |
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} |
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# Attributes |
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read $io, $buff, 2; |
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my $attributes_count = unpack("n", $buff); |
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# Read attributes |
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my @attributes; |
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if ($attributes_count) { |
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while ($attributes_count--) { |
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push @attributes, PJVM::Class::Attribute->new_from_io($io, $cp); |
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} |
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} |
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my $self = $pkg->new( |
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max_stack => $max_stack, |
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max_locals => $max_locals, |
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code => $code, |
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exceptions_table => \@exceptions_table, |
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attributes => \@attributes, |
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); |
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return $self; |
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} |
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1; |
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__END__ |