7 # This is a mess. The stash can supposedly handle Unicode but the behavior
8 # is literally undefined before 5.16 (with crashes beyond the basic plane),
9 # and remains unclear past 5.16 with evalbytes and feature unicode_eval
10 # In any case - Sub::Name needs to *somehow* work with this, so we will do
11 # a heuristic with ambiguous eval and looking for octets in the stash
12 use if "$]" >= 5.016, feature => 'unicode_eval';
15 my $builder = Test::More->builder;
16 binmode $builder->output, ":encoding(utf8)";
17 binmode $builder->failure_output, ":encoding(utf8)";
18 binmode $builder->todo_output, ":encoding(utf8)";
21 sub compile_named_sub {
22 my ( $fullname, $body ) = @_;
23 my $sub = eval "sub $fullname { $body }" . '\\&{$fullname}';
31 my ( $sub, $expected, $type, $ord ) = @_;
33 local $Test::Builder::Level = $Test::Builder::Level + 1;
35 my $for_what = sprintf "when it contains \\x%s ( %s )", (
37 ? sprintf "{%X}", $ord
38 : sprintf "%02X", $ord
41 $ord > 255 ? unpack('H*', pack 'C0U', $ord )
42 : ($ord > 0x1f and $ord < 0x7f) ? sprintf "%c", $ord
47 $expected =~ s/'/::/g;
49 # this is apparently how things worked before 5.16
50 utf8::encode($expected) if "$]" < 5.016 and $ord > 255;
52 my $stash_name = join '::', map { $_->STASH->NAME, $_->NAME } svref_2object($sub)->GV;
54 is $stash_name, $expected, "stash name for $type is correct $for_what";
55 is $sub->(), $expected, "caller() in $type returns correct name $for_what";
58 #######################################################################
60 use Sub::Name 'subname';
62 my @ordinal = ( 1 .. 255 );
64 # 5.14 is the first perl to start properly handling \0 in identifiers
68 # Unicode in 5.6 is not sane (crashes etc)
70 0x100, # LATIN CAPITAL LETTER A WITH MACRON
71 0x498, # CYRILLIC CAPITAL LETTER ZE WITH DESCENDER
72 0x2122, # TRADE MARK SIGN
73 0x1f4a9, # PILE OF POO
76 plan tests => @ordinal * 2 * 2;
78 my $legal_ident_char = "A-Z_a-z0-9'";
79 $legal_ident_char .= join '', map chr, 0x100, 0x498
82 for my $ord (@ordinal) {
84 my $pkg = sprintf 'test::SOME_%c_STASH', $ord;
85 my $subname = sprintf 'SOME_%c_NAME', $ord;
86 my $fullname = join '::', $pkg, $subname;
88 $sub = subname $fullname => sub { (caller(0))[3] };
89 caller3_ok $sub, $fullname, 'renamed closure', $ord;
91 # test that we can *always* compile at least within the correct package
93 if ( chr($ord) =~ m/^[$legal_ident_char]$/o ) { # compile directly
94 $expected = $fullname;
95 $sub = compile_named_sub $fullname => '(caller(0))[3]';
97 else { # not a legal identifier but at least test the package name by aliasing
98 $expected = "${pkg}::foo";
99 { no strict 'refs'; *palatable:: = *{"${pkg}::"} } # now palatable:: literally means ${pkg}::
100 $sub = compile_named_sub 'palatable::foo' => '(caller(0))[3]';
102 caller3_ok $sub, $expected, 'natively compiled sub', $ord;