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Capture.pm
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Capture.pm
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my class Capture { # declared in BOOTSTRAP
# class Capture is Any {
# has Mu $!list; # positional parameters
# has Mu $!hash; # named parameters
method new(:@list,:%hash) {
nqp::create(self).BUILD(:@list,:%hash);
}
submethod BUILD(:@list, :%hash) {
nqp::bindattr(self, Capture, '$!list',
nqp::getattr(nqp::decont(@list.Parcel), Parcel, '$!storage')
);
my Mu $hs := nqp::getattr(nqp::decont(%hash), EnumMap, '$!storage');
nqp::bindattr(self, Capture, '$!hash', nqp::ishash($hs) ?? $hs !! nqp::hash());
self;
}
multi method WHICH (Capture:D:) {
my $WHICH = self.^name;
if $!list {
$WHICH ~= '|';
$WHICH ~= ( '(' ~ $_.WHICH ~ ')' )
for $!list;
}
if $!hash {
$WHICH ~= '|';
$WHICH ~= ( $_ ~ '(' ~ nqp::atkey($!hash, nqp::unbox_s($_)).WHICH ~ ')' )
for self.hash.keys.sort;
}
$WHICH;
}
multi method AT-KEY(Capture:D: \key) {
my str $skey = nqp::unbox_s(key.Str);
nqp::existskey($!hash,$skey) ?? nqp::atkey($!hash, $skey) !! Nil;
}
multi method AT-KEY(Capture:D: Str:D \key) {
my str $skey = nqp::unbox_s(key);
nqp::existskey($!hash,$skey) ?? nqp::atkey($!hash, $skey) !! Nil;
}
multi method AT-POS(Capture:D: int \pos) {
fail X::OutOfRange.new(:what<Index>,:got(pos),:range<0..Inf>)
if nqp::islt_i(pos,0);
nqp::existspos($!list,pos) ?? nqp::atpos($!list,pos) !! Nil;
}
multi method AT-POS(Capture:D: Int:D \pos) {
my int $pos = nqp::unbox_i(pos);
fail X::OutOfRange.new(:what<Index>,:got(pos),:range<0..Inf>)
if nqp::islt_i($pos,0);
nqp::existspos($!list,$pos) ?? nqp::atpos($!list,$pos) !! Nil;
}
method hash(Capture:D:) {
my $enum := nqp::create(EnumMap);
nqp::bindattr($enum, EnumMap, '$!storage', $!hash);
$enum;
}
multi method EXISTS-KEY(Capture:D: Str:D \key ) {
nqp::p6bool(nqp::existskey($!hash, nqp::unbox_s(key)));
}
multi method EXISTS-KEY(Capture:D: \key ) {
nqp::p6bool(nqp::existskey($!hash, nqp::unbox_s(key.Str)));
}
method list(Capture:D:) {
nqp::p6list(nqp::clone($!list), List, Mu);
}
method elems(Capture:D:) {
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($str, nqp::unbox_s((nqp::p6box_s($kv) => $kv.value).Str));
}
}
nqp::p6box_s(nqp::join(' ', $str))
}
multi method gist(Capture:D:) {
my @list := self.list;
my %hash := self.hash;
'\('
~ (@list.map( {.gist} ).join: ', ' if +@list)
~ (', ' if +@list and +%hash)
~ (%hash.keys.sort.map( { $_.gist ~ ' => ' ~ %hash{$_}.gist } ).join: ', ' if +%hash)
~ ')';
}
multi method perl(Capture:D:) {
my @list := self.list;
my %hash := self.hash;
self.^name
~ '.new('
~ ( 'list => (' ~ @list.map( {.perl} ).join(', ') ~ ',)' if +@list)
~ (', ' if +@list and +%hash)
~ ( 'hash => {' ~ %hash.keys.pick(*).map( { $_.perl ~ ' => ' ~ %hash{$_}.perl } ).join(', ') ~ '}' if +%hash)
~ ')';
}
multi method Bool(Capture:D:) {
$!list || $!hash ?? True !! False
}
method Capture(Capture:D:) {
self
}
multi method Numeric(Capture:D:) {
self.elems
}
method FLATTENABLE_LIST() { $!list ?? $!list !! nqp::list() }
method FLATTENABLE_HASH() { $!hash ?? $!hash !! nqp::hash() }
multi method keys(Capture:D:) {
(self.list.keys, self.hash.keys).flat;
}
multi method kv(Capture:D:) {
(self.list.kv, self.hash.kv).flat;
}
multi method values(Capture:D:) {
(self.list.values, self.hash.values).flat;
}
multi method pairs(Capture:D:) {
(self.list.pairs, self.hash.pairs).flat;
}
multi method antipairs(Capture:D:) {
(self.list.antipairs, self.hash.antipairs).flat;
}
}
multi sub infix:<eqv>(Capture $a, Capture $b) {
$a.WHAT === $b.WHAT && $a.list eqv $b.list && $a.hash eqv $b.hash
}
# vim: ft=perl6 expandtab sw=4