use v6-alpha;
use Test;
plan 9;

# L<Block/"The goto statement">

=kwid

Tests for the goto() builtin

We have "phases" to make sure the gotos didn't run wild.

=cut


our $phase;

sub test1_ok { return 1 }
sub test1 {
    &test1_ok.goto();
    return 0;
}
ok(test1(), "&sub.goto does");
is(++$phase, 1, "phase completed");

# the same, but with subs declared after the call.

sub test2 {
    &test2_ok.goto();
    return 0;
}
sub test2_ok { return 1 }
ok(test2(), "&sub.goto does (forward reference)");
is(++$phase, 2, "phase completed");

ok(test3(), "&sub.goto does (real forward reference)");
sub test3 {
    &test3_ok.goto();
    return 0;
}
sub test3_ok { 1 }
is(++$phase, 3, "phase completed");

is(moose(), $?LINE, "regular call to moose() is consistent");
is(foo(), $?LINE, "goto eliminates call stack frames");

sub foo {
    &moose.goto();
}

sub moose {
    $?CALLER::LINE;
}

is(++$phase, 4, "phase completed");