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Capture.pm6
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Capture.pm6
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my class Capture { # declared in BOOTSTRAP
# class Capture is Any
# has @!list; # positional parameters
# has %!hash; # named parameters
method from-args(|c) { c }
submethod BUILD(:@list, :%hash --> Nil) {
my Int:D $elems = @list.elems; # force reification of all
nqp::bindattr(self, Capture, '@!list',
nqp::getattr(nqp::decont(@list.list), List, '$!reified'))
if $elems;
nqp::bindattr(self,Capture,'%!hash',
nqp::getattr(nqp::decont(%hash),Map,'$!storage'))
if nqp::attrinited(nqp::decont(%hash),Map,'$!storage')
}
multi method WHICH (Capture:D: --> ValueObjAt:D) {
my Mu $WHICH := nqp::list_s(nqp::eqaddr(self.WHAT,Capture) ?? 'Capture' !! nqp::unbox_s(self.^name));
if nqp::isconcrete(@!list) && nqp::elems(@!list) {
nqp::push_s($WHICH, '|');
my Mu $iter := nqp::iterator(@!list);
while $iter {
my Mu \value = nqp::shift($iter);
nqp::push_s($WHICH, '(');
nqp::push_s($WHICH, nqp::unbox_s(value.VAR.WHICH));
nqp::push_s($WHICH, ')');
}
}
if nqp::isconcrete(%!hash) && nqp::elems(%!hash) {
nqp::push_s($WHICH, '|');
for nqp::hllize(%!hash).keys.sort -> str \key {
nqp::push_s($WHICH, key);
nqp::push_s($WHICH, '(');
nqp::push_s($WHICH, nqp::unbox_s(nqp::atkey(%!hash,key).WHICH));
nqp::push_s($WHICH, ')');
}
}
nqp::box_s(nqp::join('',$WHICH),ValueObjAt)
}
multi method AT-KEY(Capture:D: Str:D \key) is raw {
nqp::if(
nqp::isconcrete(%!hash),
nqp::ifnull(nqp::atkey(%!hash,nqp::unbox_s(key)), Nil),
Nil)
}
multi method AT-KEY(Capture:D: \key) is raw {
nqp::if(
nqp::isconcrete(%!hash),
nqp::ifnull(nqp::atkey(%!hash,nqp::unbox_s(key.Str)), Nil),
Nil)
}
multi method AT-POS(Capture:D: int \pos) is raw {
nqp::islt_i(pos,0)
?? Failure.new(X::OutOfRange.new(
:what($*INDEX // 'Index'),:got(pos),:range<0..^Inf>))
!! nqp::ifnull(nqp::atpos(@!list,pos),Nil)
}
multi method AT-POS(Capture:D: Int:D \pos) is raw {
my int $pos = nqp::unbox_i(pos);
nqp::islt_i($pos,0)
?? Failure.new(X::OutOfRange.new(
:what($*INDEX // 'Index'),:got(pos),:range<0..^Inf>))
!! nqp::ifnull(nqp::atpos(@!list,$pos),Nil)
}
method hash(Capture:D:) {
nqp::if(
(nqp::defined(%!hash) && nqp::elems(%!hash)),
nqp::p6bindattrinvres(nqp::create(Map),Map,'$!storage',%!hash),
nqp::create(Map)
)
}
multi method EXISTS-KEY(Capture:D: Str:D \key) {
nqp::if(
nqp::isconcrete(%!hash),
nqp::hllbool(nqp::existskey(%!hash, nqp::unbox_s(key))),
False)
}
multi method EXISTS-KEY(Capture:D: \key) {
nqp::if(
nqp::isconcrete(%!hash),
nqp::hllbool(nqp::existskey(%!hash, nqp::unbox_s(key.Str))),
False)
}
method list(Capture:D:) {
nqp::if(
(nqp::defined(@!list) && nqp::elems(@!list)),
nqp::p6bindattrinvres(nqp::create(List),List,'$!reified',@!list),
nqp::create(List)
)
}
method elems(Capture:D:) {
nqp::isnull(@!list) ?? 0 !! nqp::p6box_i(nqp::elems(@!list))
}
multi method Str(Capture:D:) {
my Mu $str := nqp::list_s();
if @!list {
my Mu $iter := nqp::iterator(@!list);
nqp::push_s($str, nqp::unbox_s(nqp::shift($iter).Str)) while $iter;
}
if %!hash {
my Mu $iter := nqp::iterator(%!hash);
while $iter {
my $kv := nqp::shift($iter);
nqp::push_s($str, nqp::unbox_s((nqp::p6box_s(nqp::iterkey_s($kv)) => nqp::iterval($kv).Str).Str));
}
}
nqp::p6box_s(nqp::join(' ', $str))
}
multi method gist(Capture:D:) { self.Capture::raku }
multi method raku(Capture:D:) {
my int $has-list = nqp::isconcrete(@!list) && nqp::elems(@!list);
my int $has-hash = nqp::isconcrete(%!hash) && nqp::elems(%!hash);
my Mu $raku := nqp::list_s();
if nqp::eqaddr(self.WHAT, Capture) {
nqp::push_s($raku, '\(');
if $has-list {
my Mu $iter := nqp::iterator(@!list);
nqp::push_s($raku, nqp::unbox_s(nqp::shift($iter).raku));
nqp::push_s($raku, nqp::concat(', ', nqp::unbox_s(nqp::shift($iter).raku))) while $iter;
nqp::push_s($raku, ', ') if $has-hash;
}
if $has-hash {
nqp::push_s($raku,
nqp::unbox_s(self.Capture::hash.sort.map(*.raku).join(', ')));
}
nqp::push_s($raku, ')');
} else {
nqp::push_s($raku, nqp::concat(nqp::unbox_s(self.^name), '.new'));
if $has-list || $has-hash {
nqp::push_s($raku, '(');
if $has-list {
my Mu $iter := nqp::iterator(@!list);
nqp::push_s($raku, 'list => (');
nqp::push_s($raku, nqp::unbox_s(nqp::shift($iter).raku));
nqp::push_s($raku, nqp::concat(', ', nqp::unbox_s(nqp::shift($iter).raku))) while $iter;
nqp::push_s($raku, ')');
nqp::push_s($raku, ', ') if $has-hash;
}
if $has-hash {
nqp::push_s($raku, 'hash => {');
nqp::push_s($raku, nqp::unbox_s(self.Capture::hash.sort.map(*.raku).join(', ')));
nqp::push_s($raku, '}');
}
nqp::push_s($raku, ')');
}
}
nqp::p6box_s(nqp::join('', $raku))
}
multi method Bool(Capture:D:) {
nqp::hllbool(
nqp::elems(@!list) || nqp::elems(%!hash)
)
}
method Capture(Capture:D:) {
self
}
multi method Numeric(Capture:D:) {
self.Capture::elems
}
method FLATTENABLE_LIST() is raw is implementation-detail {
nqp::if(nqp::isconcrete(@!list),@!list,nqp::list)
}
method FLATTENABLE_HASH() is raw is implementation-detail {
nqp::if(nqp::isconcrete(%!hash),%!hash,nqp::hash)
}
multi method keys(Capture:D:) {
(self.Capture::list.keys, self.Capture::hash.keys).flat;
}
multi method kv(Capture:D:) {
(self.Capture::list.kv, self.Capture::hash.kv).flat;
}
multi method values(Capture:D:) {
(self.Capture::list.values, self.Capture::hash.values).flat;
}
multi method pairs(Capture:D:) {
(self.Capture::list.pairs, self.Capture::hash.pairs).flat;
}
multi method antipairs(Capture:D:) {
(self.Capture::list.antipairs, self.Capture::hash.antipairs).flat;
}
}
multi sub infix:<eqv>(Capture:D \a, Capture:D \b) {
nqp::hllbool(
nqp::eqaddr(a,b)
|| (nqp::eqaddr(a.WHAT,b.WHAT)
&& a.Capture::list eqv b.Capture::list && a.Capture::hash eqv b.Capture::hash)
)
}
# vim: ft=perl6 expandtab sw=4