X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FUtil.pm;h=e24db21de3e117c571322198ca3bade935c905c6;hp=a0bf46335e8b17c0966250f627d440b05772b545;hb=74f2f839994288ca48292d561c9dc2d822deae39;hpb=7fe1b68fc791837235aa8918bddf253998c93a7a diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm index a0bf463..e24db21 100644 --- a/lib/Mouse/Util.pm +++ b/lib/Mouse/Util.pm @@ -2,153 +2,211 @@ 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, +); -our %dependencies = ( - 'Scalar::Util' => { +# 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. :/ + '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; - # \*STDOUT would be allowed as an object in PP blessed - # but not XS - return $ref eq 'GLOB' ? undef : $ref; - }; + # checks from perlfaq4 + return 0 if !defined($_) 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$/i); - sub { + 0; + }, + 'reftype' => sub { local($@, $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; + 'openhandle' => sub { + my $fh = shift; + my $rt = reftype($fh) || ''; - # 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); + return defined(fileno($fh)) ? $fh : undef + if $rt eq 'IO'; - 0; - }, - 'reftype' => sub { - local($@, $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"; + 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 - }, - '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))) - ? $fh : undef; - }, - weaken => { - loaded => \&Scalar::Util::weaken, - not_loaded => sub { die "Scalar::Util required for weak reference support" }, - }, + (tied(*$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' => { + }, + '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; + '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; } - return \@lin; - } + }, }, - }, # ^^^^^ CODE TAKEN FROM MRO::COMPAT ^^^^^ - }, -); + }, + ); -our @EXPORT_OK = map { keys %$_ } values %dependencies; + our %loaded; -for my $module_name (keys %dependencies) { - (my $file = "$module_name.pm") =~ s{::}{/}g; + our @EXPORT_OK = map { keys %$_ } values %dependencies; + our %EXPORT_TAGS = ( + all => \@EXPORT_OK, + test => [qw/throws_ok lives_ok dies_ok/], + ); - my $loaded = do { - local $SIG{__DIE__} = 'DEFAULT'; - eval "require '$file'; 1"; - }; + for my $module (keys %dependencies) { + my ($module_name, $version) = split ' ', $module; - for my $method_name (keys %{ $dependencies{ $module_name } }) { - my $producer = $dependencies{$module_name}{$method_name}; - my $implementation; + my $loaded = do { + local $SIG{__DIE__} = 'DEFAULT'; + eval "use $module (); 1"; + }; - if (ref($producer) eq 'HASH') { - $implementation = $loaded - ? $producer->{loaded} - : $producer->{not_loaded}; + $loaded{$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; } - else { - $implementation = $loaded - ? $module_name->can($method_name) - : $producer; + } +} + +sub apply_all_roles { + my $meta = Mouse::Meta::Class->initialize(shift); + + 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; - no strict 'refs'; - *{ __PACKAGE__ . '::' . $method_name } = $implementation; + 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; @@ -180,5 +238,11 @@ Mouse::Util - features, with or without their dependencies 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