pdf-raku / native-packing-raku Goto Github PK

Look for 'revamp' branch.

A first attempt at basic inhertance:

use Test;
use Native::Packing :Endian;
plan 1;

class BaseStruct {
        has uint16 $.a;
        has uint8  $.b;
}

class Struct is BaseStruct does Native::Packing[Network] {
    has uint16 $.c;
}

my $s = Struct.new: :a(42), :b(99), :c(69);
my $n-buf = $s.pack;
is-deeply $n-buf.list, (
    0,42,
    99,
    0,69), 'network packing with inheritance';

done-testing;

The above test should pass if the storage a, b (from the base class) then c, but the test fails with:

1..1
not ok 1 - network packing with inheritance
# Failed test 'network packing with inheritance'
# at t/inheritance.t line 17
# expected: $(0, 42, 99, 0, 69)
#      got: $(0, 69, 0, 42, 99)
# You failed 1 test of 1

Which indicates we're currentl;y getting c, a, b.

Hi! The current formulation in README.md is:

The two fixed modes are:

• Vax (big endian) - least significant byte written first
• Network (little endian) - most significant byte written first

The "big endian" and "little endian" strings are swapped, it should be:

The two fixed modes are:

• Vax (little endian) - least significant byte written first
• Network (big endian) - most significant byte written first

Would like to allow native shaped arrays; possibly:

use Native::Packing :Endian;
class GifHeader does Native::Packing[Endian::Vax] {
    HAS byte @.gif-header[6];
    has uint16 $.width;
    has uint16 $.height;
}

The problem is introspecting the shape of the @.gif-header attribute. Have created an RT https://rt.perl.org/Ticket/Display.html?id=131174