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use v6;
use Test;
# L<S06/The C<callframe> and C<caller> functions>
# caller.subname
sub a_sub { b_sub() }
sub b_sub { try { caller.subname } }
#?pugs todo "feature"
#?niecza todo "try interferes with caller counting"
is ~a_sub(), "a_sub", "caller.sub works";
# caller.file
#?pugs todo "feature"
ok index(~(try { caller.file }), "caller") >= 0, "caller.file works";
# caller.line (XXX: make sure to edit the expected line number!)
#?pugs 2 todo "feature"
sub call_line { caller.line };
is call_line(), 23, "caller.line works";
# pugs: caller exposes a bug in the MMD mechanism where directly using autogenerated
# accessors on an object returned by a factory, rather than storing the object
# in an intermediate variable, works only when you chain methods with an
# explicit () between them: caller().subname - ok; caller.subname - error.
sub try_it {
my ($code, $expected, $desc) = @_;
is($code(), $expected, $desc);
}
sub try_it_caller { try_it(@_) } # (line 33.)
class A { method try_it_caller_A { &Main::try_it_caller(@_) } }
sub try_it_caller_caller { A.try_it_caller_A(@_) }
class B { method try_it_caller_B { &Main::try_it_caller_caller(@_) } }
#?DOES 1
sub chain { B.try_it_caller_B(@_) }
# pugs: must use parentheses after caller
# basic tests of caller object
#?niecza skip "NYI"
{
chain({ WHAT(caller()).gist }, "Control::Caller()", "caller object type");
chain({ caller().package }, "Main", "caller package");
chain({ caller().file }, $?FILE, "caller filename");
chain({ caller().line }, "32", "caller line");
chain({ caller().subname }, "&Main::try_it_caller", "caller subname");
chain({ caller().subtype }, "SubRoutine", "caller subtype"); # specme
chain({ caller().sub }, &try_it_caller, "caller sub (code)");
}
# select by code type
#?niecza skip "NYI"
{
chain({ caller(Any).subname }, "&Main::try_it_caller", "code type - Any");
chain({ caller("Any").subname }, "&Main::try_it_caller", "code type - Any (string)");
chain({ caller(Method).subname }, "&A::try_it_caller_A", "code type - Method");
chain({ caller("Moose") }, Mu, "code type - not found");
chain({ caller(:skip<1>).subname }, "&A::try_it_caller_A", ":skip<1>");
chain({ caller(:skip<128>) }, Mu, ":skip<128> - not found");
chain({ caller(Sub, :skip<1>).subname }, "&Main::try_it_caller_caller", "Sub, :skip<1>");
chain({ caller(Sub, :skip<2>).subname }, "&Main::chain", "Sub, :skip<2>");
chain({ caller(Method, :skip<1>).subname }, "&B::try_it_caller_B", "Method, :skip<1>");
}
# WRITEME: label tests
done;
# vim: ft=perl6
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