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Attribute.pm
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Attribute.pm
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my class Attribute { # declared in BOOTSTRAP
# class Attribute is Any {
# has str $!name;
# has int $!rw;
# has int $!has_accessor;
# has Mu $!type;
# has Mu $!container_descriptor;
# has Mu $!auto_viv_container;
# has Mu $!build_closure;
# has Mu $!package;
# has int $!inlined;
# has int $!positional_delegate;
# has int $!associative_delegate;
# has Mu $!why;
# has int $!required;
method compose(Mu $package) {
# Generate accessor method, if we're meant to have one.
if self.has_accessor {
my str $name = nqp::unbox_s(self.name);
my $meth_name := nqp::substr($name, 2);
unless $package.^declares_method($meth_name) {
my $dcpkg := nqp::decont($package);
my $meth;
my int $attr_type = nqp::objprimspec($!type);
if self.rw {
$meth := nqp::p6bool(nqp::iseq_i($attr_type, 0))
??
method (Mu:D \fles:) is rw {
nqp::getattr(nqp::decont(fles), $dcpkg, $name)
}
!!
nqp::p6bool(nqp::iseq_i($attr_type, 1))
??
method (Mu:D \fles:) is rw {
nqp::getattrref_i(nqp::decont(fles), $dcpkg, $name)
}
!!
nqp::p6bool(nqp::iseq_i($attr_type, 2))
??
method (Mu:D \fles:) is rw {
nqp::getattrref_n(nqp::decont(fles), $dcpkg, $name)
}
!!
method (Mu:D \fles:) is rw {
nqp::getattrref_s(nqp::decont(fles), $dcpkg, $name)
}
} else {
# ro accessor
$meth := nqp::p6bool(nqp::iseq_i($attr_type, 0))
??
method (Mu:D \fles:) {
nqp::getattr(nqp::decont(fles), $dcpkg, $name)
}
!!
nqp::p6bool(nqp::iseq_i($attr_type, 1))
??
method (Mu:D \fles:) {
nqp::p6box_i(
nqp::getattr_i(nqp::decont(fles), $dcpkg, $name)
);
}
!!
nqp::p6bool(nqp::iseq_i($attr_type, 2))
??
method (Mu:D \fles:) {
nqp::p6box_n(
nqp::getattr_n(nqp::decont(fles), $dcpkg, $name)
);
}
!!
method (Mu:D \fles:) {
nqp::p6box_s(
nqp::getattr_s(nqp::decont(fles), $dcpkg, $name)
);
}
}
$meth.set_name($meth_name);
$package.^add_method($meth_name, $meth);
}
}
# Apply any handles trait we may have.
self.apply_handles($package);
}
method apply_handles(Mu $pkg) {
# None by default.
}
method get_value(Mu $obj) {
my $decont := nqp::decont($obj);
given nqp::p6box_i(nqp::objprimspec($!type)) {
when 0 { nqp::getattr($decont, $!package, $!name) }
when 1 { nqp::p6box_i(nqp::getattr_i($decont, $!package, $!name)) }
when 2 { nqp::p6box_n(nqp::getattr_n($decont, $!package, $!name)) }
when 3 { nqp::p6box_s(nqp::getattr_s($decont, $!package, $!name)) }
}
}
method set_value(Mu $obj, Mu \value) {
my $decont := nqp::decont($obj);
given nqp::p6box_i(nqp::objprimspec($!type)) {
when 0 { nqp::bindattr($decont, $!package, $!name, value) }
when 1 { nqp::p6box_i(nqp::bindattr_i($decont, $!package, $!name, value)) }
when 2 { nqp::p6box_n(nqp::bindattr_n($decont, $!package, $!name, value)) }
when 3 { nqp::p6box_s(nqp::bindattr_s($decont, $!package, $!name, value)) }
}
}
method container() is rw { nqp::isnull($!auto_viv_container) ?? Mu !! $!auto_viv_container }
method has-accessor() { ?$!has_accessor }
method readonly() { !self.rw }
method package() { $!package }
method inlined() { $!inlined }
multi method Str(Attribute:D:) { self.name }
multi method gist(Attribute:D:) { self.type.^name ~ " " ~ self.name }
method WHY() {
if nqp::isnull($!why) {
Any
} else {
$!why.set_docee(self);
$!why
}
}
method set_why($why) {
$!why := $why;
}
}
# vim: ft=perl6 expandtab sw=4