12 # VVVVV CODE TAKEN FROM SCALAR::UTIL VVVVV
14 *UNIVERSAL::a_sub_not_likely_to_be_here = sub {
17 # deviation from Scalar::Util
18 # XS returns undef, PP returns GLOB.
19 # let's make that more consistent by having PP return
20 # undef if it's a GLOB. :/
22 # \*STDOUT would be allowed as an object in PP blessed
24 return $ref eq 'GLOB' ? undef : $ref;
28 local($@, $SIG{__DIE__}, $SIG{__WARN__});
30 ? eval { $_[0]->a_sub_not_likely_to_be_here }
34 'looks_like_number' => sub {
37 # checks from perlfaq4
38 return 0 if !defined($_) or ref($_);
39 return 1 if (/^[+-]?\d+$/); # is a +/- integer
40 return 1 if (/^([+-]?)(?=\d|\.\d)\d*(\.\d*)?([Ee]([+-]?\d+))?$/); # a C float
41 return 1 if ($] >= 5.008 and /^(Inf(inity)?|NaN)$/i) or ($] >= 5.006001 and /^Inf$/i);
46 local($@, $SIG{__DIE__}, $SIG{__WARN__});
50 length($t = ref($r)) or return undef;
52 # This eval will fail if the reference is not blessed
53 eval { $r->a_sub_not_likely_to_be_here; 1 }
56 # we have a GLOB or an IO. Stringify a GLOB gives it's name
58 $q =~ /^\*/ ? "GLOB" : "IO";
61 # OK, if we don't have a GLOB what parts of
62 # a glob will it populate.
63 # NOTE: A glob always has a SCALAR
65 defined *glob{ARRAY} && "ARRAY"
66 or defined *glob{HASH} && "HASH"
67 or defined *glob{CODE} && "CODE"
68 or length(ref(${$r})) ? "REF" : "SCALAR";
75 my $rt = reftype($fh) || '';
77 return defined(fileno($fh)) ? $fh : undef
80 if (reftype(\$fh) eq 'GLOB') { # handle openhandle(*DATA)
83 elsif ($rt ne 'GLOB') {
87 (tied(*$fh) or defined(fileno($fh)))
91 loaded => \&Scalar::Util::weaken,
92 not_loaded => sub { die "Scalar::Util required for weak reference support" },
94 # ^^^^^ CODE TAKEN FROM SCALAR::UTIL ^^^^^
97 # VVVVV CODE TAKEN FROM MRO::COMPAT VVVVV
99 loaded => \&mro::get_linear_isa,
101 # this recurses so it isn't pretty
106 my $classname = shift;
108 my @lin = ($classname);
110 foreach my $parent (@{"$classname\::ISA"}) {
111 my $plin = $code->($parent);
113 next if exists $stored{$_};
122 # ^^^^^ CODE TAKEN FROM MRO::COMPAT ^^^^^
124 # VVVVV CODE TAKEN FROM TEST::EXCEPTION VVVVV
125 'Test::Exception 0.27' => do {
129 my $is_exception = sub {
130 my $exception = shift;
131 return ref $exception || $exception ne '';
134 my $exception_as_string = sub {
135 my ( $prefix, $exception ) = @_;
136 return "$prefix normal exit" unless $is_exception->( $exception );
137 my $class = ref $exception;
138 $exception = "$class ($exception)"
139 if $class && "$exception" !~ m/^\Q$class/;
141 return "$prefix $exception";
143 my $try_as_caller = sub {
145 eval { $coderef->() };
150 'throws_ok' => sub (&$;$) {
151 my ( $coderef, $expecting, $description ) = @_;
152 Carp::croak "throws_ok: must pass exception class/object or regex"
153 unless defined $expecting;
154 $description = $exception_as_string->( "threw", $expecting )
155 unless defined $description;
156 my $exception = $try_as_caller->($coderef);
158 $Tester ||= Test::Builder->new;
160 my $regex = $Tester->maybe_regex( $expecting );
162 ? ( $exception =~ m/$regex/ )
164 $exception->isa( ref $expecting ? ref $expecting : $expecting )
166 $Tester->ok( $ok, $description );
168 $Tester->diag( $exception_as_string->( "expecting:", $expecting ) );
169 $Tester->diag( $exception_as_string->( "found:", $exception ) );
174 'lives_ok' => sub (&;$) {
175 my ( $coderef, $description ) = @_;
176 my $exception = $try_as_caller->( $coderef );
178 $Tester ||= Test::Builder->new;
180 my $ok = $Tester->ok( ! $is_exception->( $exception ), $description );
181 $Tester->diag( $exception_as_string->( "died:", $exception ) ) unless $ok;
185 'dies_ok' => sub (&;$) {
186 my ( $coderef, $description ) = @_;
187 my $exception = $try_as_caller->( $coderef );
189 $Tester ||= Test::Builder->new;
191 my $ok = $Tester->ok( $is_exception->( $exception ), $description );
201 our @EXPORT_OK = map { keys %$_ } values %dependencies;
204 test => [qw/throws_ok lives_ok dies_ok/],
207 for my $module (keys %dependencies) {
208 my ($module_name, $version) = split ' ', $module;
211 local $SIG{__DIE__} = 'DEFAULT';
212 eval "use $module (); 1";
215 $loaded{$module_name} = $loaded;
217 for my $method_name (keys %{ $dependencies{ $module } }) {
218 my $producer = $dependencies{$module}{$method_name};
221 if (ref($producer) eq 'HASH') {
222 $implementation = $loaded
223 ? $producer->{loaded}
224 : $producer->{not_loaded};
227 $implementation = $loaded
228 ? $module_name->can($method_name)
233 *{ __PACKAGE__ . '::' . $method_name } = $implementation;
244 Mouse::Util - features, with or without their dependencies
246 =head1 IMPLEMENTATIONS FOR
248 =head2 L<MRO::Compat>
250 =head3 get_linear_isa
252 =head2 L<Scalar::Util>
256 =head3 looks_like_number
264 C<weaken> I<must> be implemented in XS. If the user tries to use C<weaken>
265 without L<Scalar::Util>, an error is thrown.
267 =head2 Test::Exception