use B 'perlstring';
BEGIN {
our $CAN_HAZ_XS =
+ !$ENV{MOO_XS_DISABLE}
+ &&
_maybe_load_module('Class::XSAccessor')
&&
(Class::XSAccessor->VERSION > 1.06)
getters => $into, $reader, $name
);
} else {
- local $self->{captures} = {};
+ $self->{captures} = {};
$methods{$reader} =
quote_sub "${into}::${reader}"
- => $self->_generate_get($name, $spec)
- => $self->{captures}
+ => ' die "'.$reader.' is a read-only accessor" if @_ > 1;'."\n"
+ .$self->_generate_get($name, $spec)
+ => delete $self->{captures}
;
}
}
accessors => $into, $accessor, $name
);
} else {
- local $self->{captures} = {};
+ $self->{captures} = {};
$methods{$accessor} =
quote_sub "${into}::${accessor}"
=> $self->_generate_getset($name, $spec)
- => $self->{captures}
+ => delete $self->{captures}
;
}
}
setters => $into, $writer, $name
);
} else {
- local $self->{captures} = {};
+ $self->{captures} = {};
$methods{$writer} =
quote_sub "${into}::${writer}"
=> $self->_generate_set($name, $spec)
- => $self->{captures}
+ => delete $self->{captures}
;
}
}
};
foreach my $spec (@specs) {
my ($proxy, $target, @args) = @$spec;
- local $self->{captures} = {};
+ $self->{captures} = {};
$methods{$proxy} =
quote_sub "${into}::${proxy}" =>
$self->_generate_delegation($asserter, $target, \@args),
- $self->{captures}
+ delete $self->{captures}
;
}
}
if (my $asserter = $spec->{asserter}) {
- local $self->{captures} = {};
+ $self->{captures} = {};
$methods{$asserter} =
quote_sub "${into}::${asserter}" =>
'do { '.$self->_generate_get($name, $spec).qq! }||die "Attempted to access '${name}' but it is not set"!,
- $self->{captures}
+ delete $self->{captures}
;
}
\%methods;
# clearer doesn't have to be listed because it doesn't
# affect whether defined/exists makes a difference
!grep $spec->{$_},
- qw(lazy default builder isa trigger predicate);
+ qw(lazy default builder coerce isa trigger predicate weak_ref);
}
sub is_simple_get {
sub is_simple_set {
my ($self, $name, $spec) = @_;
- !grep $spec->{$_}, qw(isa trigger);
+ !grep $spec->{$_}, qw(coerce isa trigger weak_ref);
+}
+
+sub has_eager_default {
+ my ($self, $name, $spec) = @_;
+ (!$spec->{lazy} and ($spec->{default} or $spec->{builder}));
}
sub _generate_get {
sub generate_get_default {
my $self = shift;
- local $self->{captures} = {};
+ $self->{captures} = {};
my $code = $self->_generate_get_default(@_);
- ($code, $self->{captures});
+ ($code, delete $self->{captures});
}
sub _generate_use_default {
my ($self, $me, $name, $spec, $test) = @_;
$self->_generate_simple_set(
- $me, $name, $self->_generate_get_default($me, $name, $spec)
+ $me, $name, $spec, $self->_generate_get_default($me, $name, $spec)
).' unless '.$test;
}
sub _generate_set {
my ($self, $name, $spec) = @_;
- my $simple = $self->_generate_simple_set('$_[0]', $name, '$_[1]');
if ($self->is_simple_set($name, $spec)) {
- $simple;
+ $self->_generate_simple_set('$_[0]', $name, $spec, '$_[1]');
} else {
- my ($trigger, $isa_check) = @{$spec}{qw(trigger isa)};
- my $code = "do {\n";
+ my ($coerce, $trigger, $isa_check) = @{$spec}{qw(coerce trigger isa)};
+ my $simple = $self->_generate_simple_set('$self', $name, $spec, '$value');
+ my $code = "do { my (\$self, \$value) = \@_;\n";
+ if ($coerce) {
+ $code .=
+ " \$value = "
+ .$self->_generate_coerce($name, '$self', '$value', $coerce).";\n";
+ }
if ($isa_check) {
$code .=
- " ".$self->_generate_isa_check($name, '$_[1]', $isa_check).";\n";
+ " ".$self->_generate_isa_check($name, '$value', $isa_check).";\n";
}
if ($trigger) {
- my $fire = $self->_generate_trigger($name, '$_[0]', '$value', $trigger);
+ my $fire = $self->_generate_trigger($name, '$self', '$value', $trigger);
$code .=
- " my \$value = ".$simple.";\n ".$fire.";\n"
+ " ".$simple.";\n ".$fire.";\n"
." \$value;\n";
} else {
$code .= " ".$simple.";\n";
$code;
}
}
-
+
+sub generate_coerce {
+ my $self = shift;
+ $self->{captures} = {};
+ my $code = $self->_generate_coerce(@_);
+ ($code, delete $self->{captures});
+}
+
+sub _generate_coerce {
+ my ($self, $name, $obj, $value, $coerce) = @_;
+ $self->_generate_call_code($name, 'coerce', "${value}", $coerce);
+}
+
sub generate_trigger {
my $self = shift;
- local $self->{captures} = {};
+ $self->{captures} = {};
my $code = $self->_generate_trigger(@_);
- ($code, $self->{captures});
+ ($code, delete $self->{captures});
}
sub _generate_trigger {
sub generate_isa_check {
my ($self, @args) = @_;
- local $self->{captures} = {};
+ $self->{captures} = {};
my $code = $self->_generate_isa_check(@args);
- ($code, $self->{captures});
+ ($code, delete $self->{captures});
}
sub _generate_isa_check {
my ($self, $name, $type, $values, $sub) = @_;
if (my $quoted = quoted_from_sub($sub)) {
my $code = $quoted->[1];
- my $at_ = 'local @_ = ('.$values.');';
+ my $at_ = '@_ = ('.$values.');';
if (my $captures = $quoted->[2]) {
my $cap_name = qq{\$${type}_captures_for_${name}};
$self->{captures}->{$cap_name} = \$captures;
- return "do {\n".' '.$at_."\n"
- .Sub::Quote::capture_unroll($cap_name, $captures, 6)
- ." ${code}\n }";
+ Sub::Quote::inlinify(
+ $code, $values, Sub::Quote::capture_unroll($cap_name, $captures, 6)
+ );
+ } else {
+ Sub::Quote::inlinify($code, $values);
}
- 'do { local @_ = ('.$values.'); '.$code.' }';
} else {
my $cap_name = qq{\$${type}_for_${name}};
$self->{captures}->{$cap_name} = \$sub;
sub generate_populate_set {
my $self = shift;
- local $self->{captures} = {};
+ $self->{captures} = {};
my $code = $self->_generate_populate_set(@_);
- ($code, $self->{captures});
+ ($code, delete $self->{captures});
}
sub _generate_populate_set {
my ($self, $me, $name, $spec, $source, $test) = @_;
- if (!$spec->{lazy} and
- ($spec->{default} or $spec->{builder})) {
+ if ($self->has_eager_default($name, $spec)) {
my $get_indent = ' ' x ($spec->{isa} ? 6 : 4);
+ my $get_default = $self->_generate_get_default(
+ '$new', $_, $spec
+ );
my $get_value =
- "(\n${get_indent} ${test}\n${get_indent} ? ${source}\n${get_indent} : "
- .$self->_generate_get_default(
- '$new', $_, $spec
- )
- ."\n${get_indent})";
+ defined($spec->{init_arg})
+ ? "(\n${get_indent} ${test}\n${get_indent} ? ${source}\n${get_indent} : "
+ .$get_default
+ ."\n${get_indent})"
+ : $get_default;
+ if ( $spec->{coerce} ) {
+ $get_value = $self->_generate_coerce(
+ $name, $me, $get_value,
+ $spec->{coerce}
+ )
+ }
($spec->{isa}
? " {\n my \$value = ".$get_value.";\n "
.$self->_generate_isa_check(
$name, '$value', $spec->{isa}
).";\n"
- .' '.$self->_generate_simple_set($me, $name, '$value').";\n"
+ .' '.$self->_generate_simple_set($me, $name, $spec, '$value').";\n"
." }\n"
- : ' '.$self->_generate_simple_set($me, $name, $get_value).";\n"
+ : ' '.$self->_generate_simple_set($me, $name, $spec, $get_value).";\n"
)
.($spec->{trigger}
? ' '
);
} else {
" if (${test}) {\n"
+ .($spec->{coerce}
+ ? " $source = "
+ .$self->_generate_coerce(
+ $name, $me, $source,
+ $spec->{coerce}
+ ).";\n"
+ : ""
+ )
.($spec->{isa}
? " "
.$self->_generate_isa_check(
).";\n"
: ""
)
- ." ".$self->_generate_simple_set($me, $name, $source).";\n"
+ ." ".$self->_generate_simple_set($me, $name, $spec, $source).";\n"
.($spec->{trigger}
? " "
.$self->_generate_trigger(
"\@{${me}}{qw(${\join ' ', @$to_set})} = $from";
}
-sub generate_simple_set {
- my $self = shift;
- local $self->{captures} = {};
- my $code = $self->_generate_simple_set(@_);
- ($code, $self->{captures});
-}
-
sub _generate_simple_set {
- my ($self, $me, $name, $value) = @_;
+ my ($self, $me, $name, $spec, $value) = @_;
my $name_str = perlstring $name;
- "${me}->{${name_str}} = ${value}";
+ my $simple = "${me}->{${name_str}} = ${value}";
+
+ if ($spec->{weak_ref}) {
+ { local $@; require Scalar::Util; }
+
+ # Perl < 5.8.3 can't weaken refs to readonly vars
+ # (e.g. string constants). This *can* be solved by:
+ #
+ #Internals::SetReadWrite($foo);
+ #Scalar::Util::weaken ($foo);
+ #Internals::SetReadOnly($foo);
+ #
+ # but requires XS and is just too damn crazy
+ # so simply throw a better exception
+ Moo::_Utils::lt_5_8_3() ? <<"EOC" : "Scalar::Util::weaken(${simple})";
+
+ eval { Scalar::Util::weaken($simple); 1 } or do {
+ if( \$@ =~ /Modification of a read-only value attempted/) {
+ { local $@; require Carp; }
+ Carp::croak( sprintf (
+ 'Reference to readonly value in "%s" can not be weakened on Perl < 5.8.3',
+ $name_str,
+ ) );
+ } else {
+ die \$@;
+ }
+ };
+EOC
+ } else {
+ $simple;
+ }
}
sub _generate_getset {
my ($self, $name, $spec) = @_;
q{(@_ > 1}."\n ? ".$self->_generate_set($name, $spec)
- ."\n : ".$self->_generate_get($name)."\n )";
+ ."\n : ".$self->_generate_get($name, $spec)."\n )";
}
sub _generate_delegation {
projects / gitmo/Role-Tiny.git / blobdiff