use Carp ();
use Scalar::Util qw/blessed looks_like_number openhandle/;
+use Mouse::Meta::TypeConstraint;
our @EXPORT = qw(
as where message from via type subtype coerce class_type role_type enum
+ find_type_constraint
);
my %TYPE;
$_[0]
}
-my $optimized_constraints;
-my $optimized_constraints_base;
-{
+BEGIN {
no warnings 'uninitialized';
%TYPE = (
Any => sub { 1 },
Item => sub { 1 },
Bool => sub {
- !defined($_) || $_ eq "" || "$_" eq '1' || "$_" eq '0'
+ !defined($_[0]) || $_[0] eq "" || "$_[0]" eq '1' || "$_[0]" eq '0'
},
- Undef => sub { !defined($_) },
- Defined => sub { defined($_) },
- Value => sub { defined($_) && !ref($_) },
- Num => sub { !ref($_) && looks_like_number($_) },
- Int => sub { defined($_) && !ref($_) && /^-?[0-9]+$/ },
- Str => sub { defined($_) && !ref($_) },
- ClassName => sub { Mouse::is_class_loaded($_) },
- Ref => sub { ref($_) },
-
- ScalarRef => sub { ref($_) eq 'SCALAR' },
- ArrayRef => sub { ref($_) eq 'ARRAY' },
- HashRef => sub { ref($_) eq 'HASH' },
- CodeRef => sub { ref($_) eq 'CODE' },
- RegexpRef => sub { ref($_) eq 'Regexp' },
- GlobRef => sub { ref($_) eq 'GLOB' },
+ Undef => sub { !defined($_[0]) },
+ Defined => sub { defined($_[0]) },
+ Value => sub { defined($_[0]) && !ref($_[0]) },
+ Num => sub { !ref($_[0]) && looks_like_number($_[0]) },
+ Int => sub { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ },
+ Str => sub { defined($_[0]) && !ref($_[0]) },
+ ClassName => sub { Mouse::is_class_loaded($_[0]) },
+ Ref => sub { ref($_[0]) },
+
+ ScalarRef => sub { ref($_[0]) eq 'SCALAR' },
+ ArrayRef => sub { ref($_[0]) eq 'ARRAY' },
+ HashRef => sub { ref($_[0]) eq 'HASH' },
+ CodeRef => sub { ref($_[0]) eq 'CODE' },
+ RegexpRef => sub { ref($_[0]) eq 'Regexp' },
+ GlobRef => sub { ref($_[0]) eq 'GLOB' },
FileHandle => sub {
- ref($_) eq 'GLOB' && openhandle($_)
+ ref($_[0]) eq 'GLOB' && openhandle($_[0])
or
- blessed($_) && $_->isa("IO::Handle")
+ blessed($_[0]) && $_[0]->isa("IO::Handle")
},
- Object => sub { blessed($_) && blessed($_) ne 'Regexp' },
+ Object => sub { blessed($_[0]) && blessed($_[0]) ne 'Regexp' },
);
+ while (my ($name, $code) = each %TYPE) {
+ $TYPE{$name} = Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $name );
+ }
sub optimized_constraints { \%TYPE }
my @TYPE_KEYS = keys %TYPE;
if ($TYPE{$name} && $TYPE_SOURCE{$name} ne $pkg) {
Carp::croak "The type constraint '$name' has already been created in $TYPE_SOURCE{$name} and cannot be created again in $pkg";
};
- my $constraint = $conf{where} || do { $TYPE{delete $conf{as} || 'Any' } };
+ my $constraint = $conf{where} || do {
+ my $as = delete $conf{as} || 'Any';
+ if (! exists $TYPE{$as}) {
+ $TYPE{$as} = _build_type_constraint($as);
+ }
+ $TYPE{$as};
+ };
$TYPE_SOURCE{$name} = $pkg;
- $TYPE{$name} = $constraint;
+ $TYPE{$name} = Mouse::Meta::TypeConstraint->new(
+ name => $name,
+ _compiled_type_constraint => sub {
+ local $_ = $_[0];
+ if (ref $constraint eq 'CODE') {
+ $constraint->($_[0])
+ } else {
+ $constraint->check($_[0])
+ }
+ }
+ );
}
sub subtype {
if ($TYPE{$name} && $TYPE_SOURCE{$name} ne $pkg) {
Carp::croak "The type constraint '$name' has already been created in $TYPE_SOURCE{$name} and cannot be created again in $pkg";
};
- my $constraint = $conf{where} || do {
- my $as = delete $conf{as} || 'Any';
- if (! exists $TYPE{$as}) { # Perhaps it's a parameterized source?
- Mouse::Meta::Attribute::_build_type_constraint($as);
- }
- $TYPE{$as};
- };
- my $as = $conf{as} || '';
+ my $constraint = $conf{where};
+ my $as_constraint = find_or_create_isa_type_constraint($conf{as} || 'Any');
$TYPE_SOURCE{$name} = $pkg;
+ $TYPE{$name} = Mouse::Meta::TypeConstraint->new(
+ name => $name,
+ _compiled_type_constraint => (
+ $constraint ?
+ sub {
+ local $_ = $_[0];
+ $as_constraint->check($_[0]) && $constraint->($_[0])
+ } :
+ sub {
+ local $_ = $_[0];
+ $as_constraint->check($_[0]);
+ }
+ ),
+ );
- if ($as = $TYPE{$as}) {
- $TYPE{$name} = sub { $as->($_) && $constraint->($_) };
- } else {
- $TYPE{$name} = $constraint;
- }
+ return $name;
}
sub coerce {
if (! $TYPE{$type}) {
# looks parameterized
if ($type =~ /^[^\[]+\[.+\]$/) {
- Mouse::Meta::Attribute::_build_type_constraint($type);
+ $TYPE{$type} = _build_type_constraint($type);
} else {
Carp::croak "Could not find the type constraint ($type) to coerce from"
}
}
sub class_type {
- my $pkg = caller(0);
my($name, $conf) = @_;
- my $class = $conf->{class};
- subtype(
- $name => where => sub { $_->isa($class) }
- );
+ if ($conf && $conf->{class}) {
+ # No, you're using this wrong
+ warn "class_type() should be class_type(ClassName). Perhaps you're looking for subtype $name => as '$conf->{class}'?";
+ subtype($name, as => $conf->{class});
+ } else {
+ subtype(
+ $name => where => sub { $_->isa($name) }
+ );
+ }
}
sub role_type {
);
}
+# this is an original method for Mouse
sub typecast_constraints {
- my($class, $pkg, $type_constraint, $types, $value) = @_;
+ my($class, $pkg, $types, $value) = @_;
local $_;
- for my $type (ref($types) eq 'ARRAY' ? @{ $types } : ( $types )) {
+ for my $type ( split /\|/, $types ) {
next unless $COERCE{$type};
for my $coerce_type (@{ $COERCE_KEYS{$type}}) {
$_ = $value;
- next unless $TYPE{$coerce_type}->();
+ next unless $TYPE{$coerce_type}->check($value);
$_ = $value;
- $_ = $COERCE{$type}->{$coerce_type}->();
- return $_ if $type_constraint->();
+ $_ = $COERCE{$type}->{$coerce_type}->($value);
+ return $_ if $types->check($_);
}
}
return $value;
);
}
+sub _build_type_constraint {
+
+ my $spec = shift;
+ my $code;
+ $spec =~ s/\s+//g;
+ if ($spec =~ /^([^\[]+)\[(.+)\]$/) {
+ # parameterized
+ my $constraint = $1;
+ my $param = $2;
+ my $parent;
+ if ($constraint eq 'Maybe') {
+ $parent = _build_type_constraint('Undef');
+ } else {
+ $parent = _build_type_constraint($constraint);
+ }
+ my $child = _build_type_constraint($param);
+ if ($constraint eq 'ArrayRef') {
+ my $code_str =
+ "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" .
+ "sub {\n" .
+ " if (\$parent->check(\$_[0])) {\n" .
+ " foreach my \$e (\@{\$_[0]}) {\n" .
+ " return () unless \$child->check(\$e);\n" .
+ " }\n" .
+ " return 1;\n" .
+ " }\n" .
+ " return ();\n" .
+ "};\n"
+ ;
+ $code = eval $code_str or Carp::confess("Failed to generate inline type constraint: $@");
+ } elsif ($constraint eq 'HashRef') {
+ my $code_str =
+ "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" .
+ "sub {\n" .
+ " if (\$parent->check(\$_[0])) {\n" .
+ " foreach my \$e (values \%{\$_[0]}) {\n" .
+ " return () unless \$child->check(\$e);\n" .
+ " }\n" .
+ " return 1;\n" .
+ " }\n" .
+ " return ();\n" .
+ "};\n"
+ ;
+ $code = eval $code_str or Carp::confess($@);
+ } elsif ($constraint eq 'Maybe') {
+ my $code_str =
+ "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" .
+ "sub {\n" .
+ " return \$child->check(\$_[0]) || \$parent->check(\$_[0]);\n" .
+ "};\n"
+ ;
+ $code = eval $code_str or Carp::confess($@);
+ } else {
+ Carp::confess("Support for parameterized types other than ArrayRef or HashRef is not implemented yet");
+ }
+ $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $spec );
+ } else {
+ $code = $TYPE{ $spec };
+ if (! $code) {
+ my $code_str =
+ "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" .
+ "sub {\n" .
+ " Scalar::Util::blessed(\$_[0]) && \$_[0]->isa('$spec');\n" .
+ "}"
+ ;
+ $code = eval $code_str or Carp::confess($@);
+ $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $spec );
+ }
+ }
+ return Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $spec );
+}
+
+sub find_type_constraint {
+ my $type_constraint = shift;
+ return $TYPE{$type_constraint};
+}
+
+sub find_or_create_isa_type_constraint {
+ my $type_constraint = shift;
+
+ my $code;
+
+ $type_constraint =~ s/\s+//g;
+
+ $code = $TYPE{$type_constraint};
+ if (! $code) {
+ my @type_constraints = split /\|/, $type_constraint;
+ if (@type_constraints == 1) {
+ $code = $TYPE{$type_constraints[0]} ||
+ _build_type_constraint($type_constraints[0]);
+ } else {
+ my @code_list = map {
+ $TYPE{$_} || _build_type_constraint($_)
+ } @type_constraints;
+ $code = Mouse::Meta::TypeConstraint->new(
+ _compiled_type_constraint => sub {
+ my $i = 0;
+ for my $code (@code_list) {
+ return 1 if $code->check($_[0]);
+ }
+ return 0;
+ },
+ name => $type_constraint,
+ );
+ }
+ }
+ return $code;
+}
+
1;
__END__
Returns the simple type constraints that Mouse understands.
+=head1 FUNCTIONS
+
+=over 4
+
+=item B<subtype 'Name' => as 'Parent' => where { } ...>
+
+=item B<subtype as 'Parent' => where { } ...>
+
+=item B<class_type ($class, ?$options)>
+
+=item B<role_type ($role, ?$options)>
+
+=item B<enum (\@values)>
+
+=back
+
=cut
projects / gitmo/Mouse.git / blobdiff