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use v6;
use Test;
plan 80;
# L<S02/The Whatever Object/"The * character as a standalone term captures the notion of">
# L<S02/Native types/"If any native type is explicitly initialized to">
{
my $x = *;
isa_ok $x, Whatever, 'can assign * to a variable and isa works';
my Whatever $y;
ok $y.WHAT === Whatever, 'can type variables with Whatever';
ok *.WHAT === Whatever, '*.WHAT does not autocurry';
}
# L<S02/Currying of Unary and Binary Operators/"Most of the built-in numeric operators">
my $x = *-1;
lives_ok { $x.WHAT }, '(*-1).WHAT lives';
ok $x ~~ Code, '*-1 is some form of Code';
isa_ok $x, WhateverCode, '*-1 is a WhateverCode object';
is $x.(5), 4, 'and we can execute that Code';
ok *.abs ~~ Code, '*.abs is of type Code';
isa_ok *.abs, WhateverCode, '... WhateverCode, more specifically';
isa_ok 1..*, Range, '1..* is a Range, not a Code';
#?niecza skip 'Cannot use value like WhateverCode as a number'
isa_ok 1..*-1, WhateverCode, '1..*-1 is a WhateverCode';
#?niecza skip 'Unable to resolve method postcircumfix:<( )> in class Range'
isa_ok (1..*-1)(10), Range, '(1..*-1)(10) is a Range';
{
my @a = map *.abs, 1, -2, 3, -4;
is @a, [1,2,3,4], '*.meth created closure works';
}
{
# check that it also works with Enums - used to be a Rakudo bug
# RT #63880
enum A <b c>;
isa_ok (b < *), Code, 'Enums and Whatever star interact OK';
}
# check that more complex expressions work:
{
my $code = *.uc eq 'FOO';
ok $code ~~ Callable, '"*.uc eq $str" produces a Callable object';
ok $code("foo"), 'and it works (+)';
ok !$code("bar"), 'and it works (-)';
}
# RT #64566
#?niecza skip 'hangs'
{
my @a = 1 .. 4;
is @a[1..*], 2..4, '@a[1..*] skips first element, stops at last';
is @a, 1..4, 'array is unmodified after reference to [1..*]';
# RT #61844
is (0, 1)[*-1..*], 1, '*-1..* lives and clips to range of Parcel';
}
# RT #68894
{
my @a = <a b>;
my $t = join '', map { @a[$_ % *] }, ^5;
is $t, 'ababa', '$_ % * works';
}
{
my $x = +*;
isa_ok $x, Code, '+* is of type Code';
# following is what we expect +* to do
my @list = <1 10 2 3>;
is sort(-> $key {+$key}, @list), [1,2,3,10], '-> $key {+$key} generates closure to numify';
# and here are two actual applications of +*
is sort($x, @list), [1,2,3,10], '+* generates closure to numify';
is @list.sort($x), [1,2,3,10], '+* generates closure to numify';
# test that +* works in a slice
my @x1;
for 1..4 {
@x1[+*] = $_;
}
is @x1.join('|'), '1|2|3|4', '+* in hash slice (RT 67450)';
}
# L<S02/Currying of Unary and Binary Operators/are internally curried into closures of one or two
# arguments>
{
my $c = * * *;
ok $c ~~ Code, '* * * generated a closure';
is $c(-3, -5), 15, '... that takes two arguments';
}
{
my $c = * * * + *;
ok $c ~~ Code, '* * * + * generated a closure';
is $c(2, 2, 2), 6, '... that works';
is $c(-3, -3, -3), 6, '... that respects precdence';
is $c(0, -10, 3), 3, 'that can work with three different arguments';
}
{
my $c = * + * * *;
ok $c ~~ Code, '* + * * * generated a closure';
is $c(2, 2, 2), 6, '... that works';
is $c(-3, -3, -3), 6, '... that respects precdence';
is $c(3, 0, -10), 3, 'that can work with three different arguments';
}
#?niecza skip 'hangs'
is (0,0,0,0,0,0) >>+>> ((1,2) xx *), <1 2 1 2 1 2>, 'xx * works';
{
is (1, Mu, 2, 3).grep(*.defined), <1 2 3>, '*.defined works in grep';
my $rt68714 = *.defined;
ok $rt68714 ~~ Code, '*.defined generates a closure';
ok $rt68714(68714), '*.defined works (true)';
ok not $rt68714(Any), '*.defined works (false)';
}
# L<S02/The Whatever Object/skip first two elements>
{
# TODO: find out if this allowed for item assignment, or for list
# assignment only
#?rakudo todo '* as dummy'
eval_lives_ok ' * = 5 ', 'can dummy-asign to *';
my $x;
(*, *, $x) = 1, 2, 3, 4, 5;
is $x, 3, 'Can skip lvalues and replace them by Whatever';
}
# L<S02/Currying of Unary and Binary Operators/This rewrite happens after variables are looked up
# in their lexical scope>
{
my $x = 3;
{
is (* + (my $x = 5)).(8), 13,
'can use a declaration in Whatever-curried expression';
is $x, 5, 'and it did not get promoted into its own scope';
}
}
# L<S02/The C<.assuming> Method/This is only for operators that are not
# Whatever-aware.>
{
multi sub infix:<quack>($x, $y) { "$x|$y" };
isa_ok * quack 5, Code,
'* works on LHS of user-defined operator (type)';
isa_ok 5 quack *, Code,
'* works on RHS of user-defined operator (type)';
isa_ok * quack *, Code,
'* works on both sides of user-defined operator (type)';
is (* quack 5).(3), '3|5',
'* works on LHS of user-defined operator (result)';
is (7 quack *).(3), '7|3',
'* works on RHS of user-defined operator (result)';
is (* quack *).('a', 'b'), 'a|b',
'* works on both sides of user-defined operator (result)';
is ((* quack *) quack *).(1, 2, 3), '1|2|3',
'also with three *';
is ((* quack *) quack 'a').(2, 3), '2|3|a',
'also if the last is not a *, but a normal value';
}
# Ensure that in *.foo(blah()), blah() is not called until we invoke the closure.
{
my $called = 0;
sub oh_noes() { $called = 1; 4 }
my $x = *.substr(oh_noes());
is $called, 0, 'in *.foo(oh_noes()), oh_noes() not called when making closure';
ok $x ~~ Callable, 'and we get a Callable as expected';
is $x('lovelorn'), 'lorn', 'does get called when invoked';
is $called, 1, 'does get called when invoked';
}
# chains of methods
{
my $x = *.uc.flip;
ok $x ~~ Callable, 'we get a Callable from chained methods with *';
is $x('dog'), 'GOD', 'we call both methods';
}
# chains of operators, RT #71846
{
is (0, 1, 2, 3).grep(!(* % 2)).join('|'),
'0|2', 'prefix:<!> Whatever-curries correctly';
}
# RT #69362
{
my $x = *.uc;
my $y = * + 3;
ok $x.signature, 'Whatever-curried method calls have a signature';
ok $y.signature, 'Whatever-curried operators have a signature';
}
# RT #73162
eval_lives_ok '{*.{}}()', '{*.{}}() lives';
# RT #80256
{
my $f = * !< 3;
isa_ok $f, Code, 'Whatever-currying !< (1)';
nok $f(2), 'Whatever-currying !< (2)';
ok $f(3), 'Whatever-currying !< (3)';
ok $f(4), 'Whatever-currying !< (4)';
}
#?rakudo skip 'currying plus meta ops'
{
my $f = 5 R- *;
isa_ok $f, Code, 'Whatever-currying with R- (1)';
is $f(7), 2, 'Whatever-currying with R- (2)';
is $f(0), -5, 'Whatever-currying with R- (3)';
dies_ok { &infix:<+>(*, 42) }, '&infix:<+>(*, 42) doesn\'t make a closure';
#?niecza skip 'Undeclared routine'
dies_ok { &infix:<R+>(*, 42) }, '&infix:<+>(*, 42) doesn\'t make a closure';
}
# RT 79166
{
my $rt79166 = *;
isa_ok $rt79166, Whatever, 'assignment of whatever still works';
$rt79166 = 'RT 79166';
is $rt79166, 'RT 79166', 'assignment to variable with whatever in it';
}
# RT #81448
{
sub f($x) { $x x 2 };
is *.&f.('a'), 'aa', '*.&sub curries';
}
# RT #77000
{
isa_ok *[0], WhateverCode, '*[0] curries';
is *[0]([1, 2, 3]), 1, '... it works';
}
# RT #102466
{
my $chained = 1 < * < 3;
ok $chained(2), 'Chained comparison (1)';
#?rakudo 2 todo 'RT 102466'
nok $chained(1), 'Chained comparison (2)';
nok $chained(3), 'Chained comparison (3)';
}
# vim: ft=perl6
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