use warnings;
use base qw/Exporter/;
use Carp;
+use Scalar::Util qw(blessed looks_like_number openhandle reftype weaken);
our @EXPORT_OK = qw(
- blessed
+ blessed looks_like_number openhandle reftype weaken
get_linear_isa
- looks_like_number
- openhandle
- reftype
- weaken
);
our %EXPORT_TAGS = (
all => \@EXPORT_OK,
);
-# We only have to do this nastiness if we haven't loaded XS version of
-# Mouse.pm, so check if we're running under PurePerl or not
BEGIN {
- our %dependencies = (
- 'Scalar::Util' => {
-
-# VVVVV CODE TAKEN FROM SCALAR::UTIL VVVVV
- 'blessed' => do {
- *UNIVERSAL::a_sub_not_likely_to_be_here = sub {
- my $ref = ref($_[0]);
-
- # deviation from Scalar::Util
- # XS returns undef, PP returns GLOB.
- # let's make that more consistent by having PP return
- # undef if it's a GLOB. :/
-
- # \*STDOUT would be allowed as an object in PP blessed
- # but not XS
- return $ref eq 'GLOB' ? undef : $ref;
- };
-
- sub {
- local($@, $SIG{__DIE__}, $SIG{__WARN__});
- length(ref($_[0]))
- ? eval { $_[0]->a_sub_not_likely_to_be_here }
- : undef;
- },
- },
- 'looks_like_number' => sub {
- local $_ = shift;
-
- # checks from perlfaq4
- return 0 if !defined($_) or ref($_);
- return 1 if (/^[+-]?\d+$/); # is a +/- integer
- return 1 if (/^([+-]?)(?=\d|\.\d)\d*(\.\d*)?([Ee]([+-]?\d+))?$/); # a C float
- return 1 if ($] >= 5.008 and /^(Inf(inity)?|NaN)$/i) or ($] >= 5.006001 and /^Inf$/i);
-
- 0;
- },
- 'reftype' => sub {
- local($@, $SIG{__DIE__}, $SIG{__WARN__});
- my $r = shift;
- my $t;
-
- length($t = ref($r)) or return undef;
-
- # This eval will fail if the reference is not blessed
- eval { $r->a_sub_not_likely_to_be_here; 1 }
- ? do {
- $t = eval {
- # we have a GLOB or an IO. Stringify a GLOB gives it's name
- my $q = *$r;
- $q =~ /^\*/ ? "GLOB" : "IO";
- }
- or do {
- # OK, if we don't have a GLOB what parts of
- # a glob will it populate.
- # NOTE: A glob always has a SCALAR
- local *glob = $r;
- defined *glob{ARRAY} && "ARRAY"
- or defined *glob{HASH} && "HASH"
- or defined *glob{CODE} && "CODE"
- or length(ref(${$r})) ? "REF" : "SCALAR";
- }
- }
- : $t
- },
- 'openhandle' => sub {
- my $fh = shift;
- my $rt = reftype($fh) || '';
-
- return defined(fileno($fh)) ? $fh : undef
- if $rt eq 'IO';
-
- if (reftype(\$fh) eq 'GLOB') { # handle openhandle(*DATA)
- $fh = \(my $tmp=$fh);
- }
- elsif ($rt ne 'GLOB') {
- return undef;
- }
-
- (tied(*$fh) or defined(fileno($fh)))
- ? $fh : undef;
- },
- weaken => {
- loaded => \&Scalar::Util::weaken,
- not_loaded => sub { die "Scalar::Util required for weak reference support" },
- },
-# ^^^^^ CODE TAKEN FROM SCALAR::UTIL ^^^^^
- },
- 'MRO::Compat' => {
-# VVVVV CODE TAKEN FROM MRO::COMPAT VVVVV
- 'get_linear_isa' => {
- loaded => \&mro::get_linear_isa,
- not_loaded => do {
- # this recurses so it isn't pretty
- my $code;
- $code = sub {
- no strict 'refs';
-
- my $classname = shift;
-
- my @lin = ($classname);
- my %stored;
- foreach my $parent (@{"$classname\::ISA"}) {
- my $plin = $code->($parent);
- foreach (@$plin) {
- next if exists $stored{$_};
- push(@lin, $_);
- $stored{$_} = 1;
- }
- }
- return \@lin;
- }
- },
- },
-# ^^^^^ CODE TAKEN FROM MRO::COMPAT ^^^^^
- },
- );
-
- our %loaded;
-
- our @EXPORT_OK = map { keys %$_ } values %dependencies;
- our %EXPORT_TAGS = (
- all => \@EXPORT_OK,
- test => [qw/throws_ok lives_ok dies_ok/],
- );
-
- for my $module (keys %dependencies) {
- my ($module_name, $version) = split ' ', $module;
-
+ my $impl;
+ if (\&mro::get_linear_isa) {
+ $impl = \&mro::get_linear_isa;
+ } else {
my $loaded = do {
local $SIG{__DIE__} = 'DEFAULT';
- eval "use $module (); 1";
+ eval "use MRO::Compat (); 1";
};
-
- $loaded{$module_name} = $loaded;
-
- for my $method_name (keys %{ $dependencies{ $module } }) {
- my $producer = $dependencies{$module}{$method_name};
- my $implementation;
-
- if (ref($producer) eq 'HASH') {
- $implementation = $loaded
- ? $producer->{loaded}
- : $producer->{not_loaded};
- }
- else {
- $implementation = $loaded
- ? $module_name->can($method_name)
- : $producer;
- }
-
- no strict 'refs';
- *{ __PACKAGE__ . '::' . $method_name } = $implementation;
+ if ($loaded) {
+ $impl = \&mro::get_linear_isa;
+ } else {
+# VVVVV CODE TAKEN FROM MRO::COMPAT VVVVV
+ my $code; # this recurses so it isn't pretty
+ $code = sub {
+ no strict 'refs';
+
+ my $classname = shift;
+
+ my @lin = ($classname);
+ my %stored;
+ foreach my $parent (@{"$classname\::ISA"}) {
+ my $plin = $code->($parent);
+ foreach (@$plin) {
+ next if exists $stored{$_};
+ push(@lin, $_);
+ $stored{$_} = 1;
+ }
+ }
+ return \@lin;
+ };
+# ^^^^^ CODE TAKEN FROM MRO::COMPAT ^^^^^
+ $impl = $code;
}
}
+ no strict 'refs';
+ *{ __PACKAGE__ . '::get_linear_isa'} = $impl;
}
sub apply_all_roles {
projects / gitmo/Mouse.git / commitdiff