X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FUtil.pm;h=dc8c27ab214093a8adeb12b40e1d0b61f2a92ec2;hp=9d87d5a446b6ab1fe95a4a506e8dd20a327f7a2e;hb=f671555230c6928a7834a9c6be047649cd0c4f5b;hpb=3f8f481dfc754a3ff44205c9f0747dc861705ac1 diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm index 9d87d5a..dc8c27a 100644 --- a/lib/Mouse/Util.pm +++ b/lib/Mouse/Util.pm @@ -1,209 +1,31 @@ -#!/usr/bin/env perl package Mouse::Util; use strict; use warnings; -use Exporter 'import'; +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 { - # 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__}); - 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 ^^^^^ - }, - ); - - 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; - } - } + my $impl; + if ($] >= 5.009_005) { + $impl = \&mro::get_linear_isa; } 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 || eval { require Scalar::Util; 1 }) { - *openhandle = \&Scalar::Util::openhandle; - } else { - # XXX - room for improvement - *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; - }; - } - - if (defined &mro::get_linear_isa || eval { require MRO::Compat; 1; }) { - *get_linear_isa = \&mro::get_linear_isa; + my $loaded = do { + local $SIG{__DIE__} = 'DEFAULT'; + eval "require MRO::Compat; 1"; + }; + if ($loaded) { + $impl = \&mro::get_linear_isa; } else { - # this recurses so it isn't pretty - my $code; - *get_linear_isa = $code = sub { +# VVVVV CODE TAKEN FROM MRO::COMPAT VVVVV + my $code; # this recurses so it isn't pretty + $code = sub { no strict 'refs'; my $classname = shift; @@ -220,17 +42,48 @@ BEGIN { } return \@lin; }; +# ^^^^^ CODE TAKEN FROM MRO::COMPAT ^^^^^ + $impl = $code; } } + + no strict 'refs'; + *{ __PACKAGE__ . '::get_linear_isa'} = $impl; } 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; + + # Basis of Data::OptList + 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; @@ -247,26 +100,5 @@ Mouse::Util - features, with or without their dependencies =head3 get_linear_isa -=head2 L - -=head3 blessed - -=head3 looks_like_number - -=head3 reftype - -=head3 openhandle - -=head3 weaken - -C I be implemented in XS. If the user tries to use C -without L, an error is thrown. - -=head2 Test::Exception - -=head3 throws_ok - -=head3 lives_ok - =cut