multi_dimensional_array.t

use v6;
use Test;

=begin pod

Multi-Dimensional Arrays

=end pod

plan 41;

# multi-dimensional array
# L<S09/Multidimensional arrays/Perl 6 arrays are not restricted to being one-dimensional>

# real multi-dimensional arrays
#?rakudo skip 'Parse Error: Statement not terminated properly'
{
    my @md[2;2];
    @md[0;0] = 0;
    @md[0;1] = 2;
    @md[1;0] = 4;
    @md[1;1] = 6;
    is(@md[0;0], 0, 'accessing an array as [0;0] works (1)');
    is(@md[0;1], 2, 'accessing an array as [0;0] works (2)');
    is(@md[1;0], 4, 'accessing an array as [0;0] works (3)');
    is(@md[1;1], 6, 'accessing an array as [0;0] works (4)');
    dies_ok({@md[1;2] = 5}, 'setting a multi-d array beyond boundaries fails');

    is(@md.elems, 4, '.elems works on multidimensional array');
}

#?rakudo skip 'Parse Error: Statement not terminated properly'
{
    my @md[*;*;2];
    @md[0;0;0] = 'foo';
    @md[9;9;1] = 'bar';
    is(@md[0;0;0], 'foo', 'accessing a partially bounded array works (1)');
    is(@md[9;9;1], 'bar', 'accessing a partially bounded array works (2)');
    dies_ok({@md[0;0;2] = 9}, 'setting a partially bounded multi-d array beyond boundaries fails');

    is(@md.elems, 2, '.elems works on partially bounded multi-d array');
}

my $multi1 = [1, ['foo', 'bar', 'baz'], 5];
is(+$multi1, 3, 'the multi1 has 3 elements');
is($multi1[0], 1, 'got the right value at multi1 index 0');

{
    my $array = $multi1[1];
    is(+$array, 3, 'multi1[1] has 3 elements');
    is(+$multi1[1], 3, '+$multi1[1] works')
}

isa_ok($multi1[1], List);

# multi-dimensional array slices
# L<S09/"Subscript and slice notation"/index value to each slice>

#?rakudo 3 todo 'Null PMC access in find_method()'
#?pugs 3 todo 'multi-dimensional indexing'
is(eval('$multi1[1;0]'), 'foo', 'got the right value at multi1 index 1,0');
is(eval('$multi1[1;1]'), 'bar', 'got the right value at multi1 index 1,1');
is(eval('$multi1[1;2]'), 'baz', 'got the right value at multi1 index 1,2');

# and the normal syntax

is($multi1[1][0], 'foo', 'got the right value at multi1 index 1,0');
is($multi1[1][1], 'bar', 'got the right value at multi1 index 1,1');
is($multi1[1][2], 'baz', 'got the right value at multi1 index 1,2');

is($multi1[2], 5, 'got the right value at multi1 index 2');

# multi-dimensional array constructed from 2 array refs

my $array_ref1 = (1, 2, 3);
my $array_ref2 = [4, 5, 6];

my $multi2 = [ $array_ref1, $array_ref2 ];
is(+$multi2, 2, 'the multi2 has 2 elements');

{
    my $array = $multi2[0];
    is(+$array, 3, 'multi2[0] has 3 elements');
    is(+$multi2[0], 3, '+$multi2[0] works');
}
#?rakudo todo 'nom regression'
isa_ok($multi2[0], List);

# slice

#?rakudo 3 todo 'Null PMC access in find_method()'
#?pugs 3 todo ''
is(eval('$multi2[0;0]'), 1, 'got the right value at multi2 index 0,0');
is(eval('$multi2[0;1]'), 2, 'got the right value at multi2 index 0,1');
is(eval('$multi2[0;2]'), 3, 'got the right value at multi2 index 0,2');

# normal

is($multi2[0][0], 1, 'got the right value at multi2 index 0,0');
is($multi2[0][1], 2, 'got the right value at multi2 index 0,1');
is($multi2[0][2], 3, 'got the right value at multi2 index 0,2');


{
    my $array = $multi2[1];
    is(+$array, 3, 'multi2[1] has 3 elements');
    is(+$multi2[1], 3, '+$multi2[1] works');
}
isa_ok($multi2[1], List);

# slice

#?rakudo 3 todo 'Null PMC access in find_method()'
#?pugs 3 todo ''
is(eval('$multi2[1;0]'), 4, 'got the right value at multi2 index 1,0');
is(eval('$multi2[1;1]'), 5, 'got the right value at multi2 index 1,1');
is(eval('$multi2[1;2]'), 6, 'got the right value at multi2 index 1,2');

# normal

is($multi2[1][0], 4, 'got the right value at multi2 index 1,0');
is($multi2[1][1], 5, 'got the right value at multi2 index 1,1');
is($multi2[1][2], 6, 'got the right value at multi2 index 1,2');

# vim: ft=perl6