package Mouse::Util;
use strict;
use warnings;
-use base 'Exporter';
+use base qw/Exporter/;
use Carp;
+our @EXPORT_OK = qw(
+ blessed
+ 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 : $ref;
- };
-
- sub {
+ # Checking for undefinedness will ensure that our functions are
+ # properly loaded without loading Mouse, but this is kind of ugly
+ if ($Mouse::PurePerl || ! defined $Mouse::PurePerl) {
+ my %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__}, $SIG{__WARN__});
- length(ref($_[0]))
- ? eval { $_[0]->a_sub_not_likely_to_be_here }
- : undef;
+ 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
},
- },
- '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";
+ '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);
}
- 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 = $r;
- defined *glob{ARRAY} && "ARRAY"
- or defined *glob{HASH} && "HASH"
- or defined *glob{CODE} && "CODE"
- or length(ref(${$r})) ? "REF" : "SCALAR";
+ elsif ($rt ne 'GLOB') {
+ return undef;
}
- }
- : $t
+
+ (tied(*$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 ^^^^^
},
- 'openhandle' => sub {
+ );
+
+ my %loaded;
+ for my $module_name (keys %dependencies) {
+ my $loaded = do {
+ local $SIG{__DIE__} = 'DEFAULT';
+ eval "require $module_name; 1";
+ };
+
+ $loaded{$module_name} = $loaded;
+
+ for my $method_name (keys %{ $dependencies{ $module_name } }) {
+ my $producer = $dependencies{$module_name}{$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;
+ }
+ }
+ } else {
+ # If we're running under XS, we can provide
+ # blessed
+ # looks_like_number
+ # reftype
+ # weaken
+ # other functions need to be loaded from our respective sources
+
+ if (defined &Scalar::Util::openhandle) {
+ *openhandle = \&Scalar::Util::openhandle;
+ } else {
+ # XXX - room for improvement
+ *openhandle = sub {
my $fh = shift;
my $rt = reftype($fh) || '';
(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 ^^^^^
- },
-# VVVVV CODE TAKEN FROM TEST::EXCEPTION VVVVV
- 'Test::Exception' => do {
-
- my $Tester;
-
- my $is_exception = sub {
- my $exception = shift;
- return ref $exception || $exception ne '';
};
+ }
- my $exception_as_string = sub {
- my ( $prefix, $exception ) = @_;
- return "$prefix normal exit" unless $is_exception->( $exception );
- my $class = ref $exception;
- $exception = "$class ($exception)"
- if $class && "$exception" !~ m/^\Q$class/;
- chomp $exception;
- return "$prefix $exception";
- };
- my $try_as_caller = sub {
- my $coderef = shift;
- eval { $coderef->() };
- $@;
+ if (defined &mro::get_linear_isa || eval { require MRO::Compat; 1; }) {
+ *get_linear_isa = \&mro::get_linear_isa;
+ } else {
+ # this recurses so it isn't pretty
+ my $code;
+ *get_linear_isa = $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;
};
-
- {
- 'throws_ok' => sub (&$;$) {
- my ( $coderef, $expecting, $description ) = @_;
- Carp::croak "throws_ok: must pass exception class/object or regex"
- unless defined $expecting;
- $description = $exception_as_string->( "threw", $expecting )
- unless defined $description;
- my $exception = $try_as_caller->($coderef);
-
- $Tester ||= Test::Builder->new;
-
- my $regex = $Tester->maybe_regex( $expecting );
- my $ok = $regex
- ? ( $exception =~ m/$regex/ )
- : eval {
- $exception->isa( ref $expecting ? ref $expecting : $expecting )
- };
- $Tester->ok( $ok, $description );
- unless ( $ok ) {
- $Tester->diag( $exception_as_string->( "expecting:", $expecting ) );
- $Tester->diag( $exception_as_string->( "found:", $exception ) );
- };
- $@ = $exception;
- return $ok;
- },
- 'lives_ok' => sub (&;$) {
- my ( $coderef, $description ) = @_;
- my $exception = $try_as_caller->( $coderef );
-
- $Tester ||= Test::Builder->new;
-
- my $ok = $Tester->ok( ! $is_exception->( $exception ), $description );
- $Tester->diag( $exception_as_string->( "died:", $exception ) ) unless $ok;
- $@ = $exception;
- return $ok;
- },
- },
- },
- );
-
- our %loaded;
-
- our @EXPORT_OK = map { keys %$_ } values %dependencies;
- our %EXPORT_TAGS = (
- all => \@EXPORT_OK,
- test => [qw/throws_ok lives_ok/],
- );
-
- for my $module_name (keys %dependencies) {
- my $loaded = do {
- local $SIG{__DIE__} = 'DEFAULT';
- eval "require $module_name; 1";
- };
-
- $loaded{$module_name} = $loaded;
-
- for my $method_name (keys %{ $dependencies{ $module_name } }) {
- my $producer = $dependencies{$module_name}{$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;
}
}
}
sub apply_all_roles {
my $meta = Mouse::Meta::Class->initialize(shift);
- my $role = shift;
- confess "Mouse::Util only supports 'apply_all_roles' on individual roles at a time" if @_;
- Mouse::load_class($role);
- $role->meta->apply($meta);
+ my @roles;
+ my $max = scalar(@_);
+ for (my $i = 0; $i < $max ; $i++) {
+ if ($i + 1 < $max && ref($_[$i + 1])) {
+ push @roles, [ $_[$i++] => $_[$i] ];
+ } else {
+ push @roles, [ $_[$i] => {} ];
+ }
+ }
+
+ foreach my $role_spec (@roles) {
+ Mouse::load_class( $role_spec->[0] );
+ }
+
+ ( $_->[0]->can('meta') && $_->[0]->meta->isa('Mouse::Meta::Role') )
+ || croak("You can only consume roles, "
+ . $_->[0]
+ . " is not a Moose role")
+ foreach @roles;
+
+ if ( scalar @roles == 1 ) {
+ my ( $role, $params ) = @{ $roles[0] };
+ $role->meta->apply( $meta, ( defined $params ? %$params : () ) );
+ }
+ else {
+ Mouse::Meta::Role->combine_apply($meta, @roles);
+ }
+
}
1;
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