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Hash.pm
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Hash.pm
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my class X::Hash::Store::OddNumber { ... }
my class Hash { # declared in BOOTSTRAP
# my class Hash is EnumMap {
# has Mu $!descriptor;
method new(*@args) {
my %h := nqp::create(self);
%h.STORE(@args) if @args;
%h;
}
multi method at_key(Hash:D: $key is copy) is rw {
my Mu $storage := nqp::defined(nqp::getattr(self, EnumMap, '$!storage')) ??
nqp::getattr(self, EnumMap, '$!storage') !!
nqp::bindattr(self, EnumMap, '$!storage', nqp::hash());
$key = $key.Str;
if nqp::existskey($storage, nqp::unbox_s($key)) {
nqp::atkey($storage, nqp::unbox_s($key));
}
else {
nqp::p6bindattrinvres(
(my \v := nqp::p6scalarfromdesc($!descriptor)),
Scalar,
'$!whence',
-> { nqp::bindkey($storage, nqp::unbox_s($key), v) }
);
}
}
method bind_key($key, Mu \bindval) is rw {
nqp::defined(nqp::getattr(self, EnumMap, '$!storage')) ||
nqp::bindattr(self, EnumMap, '$!storage', nqp::hash());
nqp::bindkey(
nqp::getattr(self, EnumMap, '$!storage'),
nqp::unbox_s($key.Str),
bindval)
}
multi method perl(Hash:D \SELF:) {
nqp::iscont(SELF)
?? '{' ~ self.pairs.map({.perl}).join(', ') ~ '}'
!! '(' ~ self.pairs.map({.perl}).join(', ') ~ ').hash'
}
multi method DUMP(Hash:D: :$indent-step = 4, :%ctx?) {
return DUMP(self, :$indent-step) unless %ctx;
my Mu $attrs := nqp::list();
nqp::push($attrs, '$!descriptor');
nqp::push($attrs, $!descriptor );
nqp::push($attrs, '$!storage' );
nqp::push($attrs, nqp::getattr(nqp::decont(self), EnumMap, '$!storage'));
self.DUMP-OBJECT-ATTRS($attrs, :$indent-step, :%ctx);
}
method STORE_AT_KEY(\key, Mu $x) is rw {
my $v := nqp::p6scalarfromdesc($!descriptor);
nqp::findmethod(EnumMap, 'STORE_AT_KEY')(self, key, $v = $x);
}
method STORE(\to_store) is hidden_from_backtrace {
my $items = (to_store,).flat.eager;
nqp::bindattr(self, EnumMap, '$!storage', nqp::hash());
while $items {
my Mu $x := $items.shift;
if Enum.ACCEPTS($x) { self.STORE_AT_KEY($x.key, $x.value) }
elsif EnumMap.ACCEPTS($x) {
for $x.list { self.STORE_AT_KEY(.key, .value) }
}
elsif $items { self.STORE_AT_KEY($x, $items.shift) }
else {
X::Hash::Store::OddNumber.new.throw
}
}
self
}
# introspection
method name() {
my $d := $!descriptor;
nqp::isnull($d) ?? Str !! $d.name()
}
method keyof () { Any }
method of() {
my $d := $!descriptor;
nqp::isnull($d) ?? Mu !! $d.of;
}
method default() {
my $d := $!descriptor;
nqp::isnull($d) ?? Mu !! $d.default;
}
method dynamic() {
my $d := $!descriptor;
nqp::isnull($d) ?? Mu !! so $d.dynamic;
}
proto method delete(|) { * }
multi method delete(Hash:U:) { # is DEPRECATED doesn't work in settings
DEPRECATED("the :delete adverb");
self.delete_key;
}
multi method delete($key as Str) { # is DEPRECATED doesn't work in settings
DEPRECATED("the :delete adverb");
self.delete_key($key);
}
proto method delete_key(|) { * }
multi method delete_key(Hash:U:) { Nil }
multi method delete_key($key as Str) {
my Mu $val = self.at_key($key);
nqp::deletekey(
nqp::getattr(self, EnumMap, '$!storage'),
nqp::unbox_s($key)
);
$val;
}
method push(*@values) {
my $previous;
my $has_previous;
for @values -> $e {
if $has_previous {
self!_push_construct($previous, $e);
$has_previous = 0;
} elsif $e.^isa(Enum) {
self!_push_construct($e.key, $e.value);
} else {
$previous = $e;
$has_previous = 1;
}
}
if $has_previous {
warn "Trailing item in Hash.push";
}
self
}
proto method classify-list(|) { * }
multi method classify-list( &test, *@list ) {
fail 'Cannot .classify an infinite list' if @list.infinite;
if @list {
# multi-level classify
if test(@list[0]) ~~ List {
for @list -> $l {
my @keys = test($l);
my $last := @keys.pop;
my $hash = self;
$hash = $hash{$_} //= self.new for @keys;
nqp::push(
nqp::p6listitems(nqp::decont($hash{$last} //= [])), $l );
}
}
# just a simple classify
else {
nqp::push(
nqp::p6listitems(nqp::decont(self{test $_} //= [])), $_ )
for @list;
}
}
self;
}
multi method classify-list( %test, *@list ) {
samewith( { %test{$^a} }, @list );
}
multi method classify-list( @test, *@list ) {
samewith( { @test[$^a] }, @list );
}
proto method categorize-list(|) { * }
multi method categorize-list( &test, *@list ) {
fail 'Cannot .categorize an infinite list' if @list.infinite;
if @list {
# multi-level categorize
if test(@list[0])[0] ~~ List {
for @list -> $l {
for test($l) -> $k {
my @keys = @($k);
my $last := @keys.pop;
my $hash = self;
$hash = $hash{$_} //= self.new for @keys;
nqp::push(
nqp::p6listitems(
nqp::decont($hash{$last} //= [])), $l );
}
}
}
# just a simple categorize
else {
for @list -> $l {
nqp::push(
nqp::p6listitems(nqp::decont(self{$_} //= [])), $l )
for test($l);
}
}
}
self;
}
multi method categorize-list( %test, *@list ) {
samewith( { %test{$^a} }, @list );
}
multi method categorize-list( @test, *@list ) {
samewith( { @test[$^a] }, @list );
}
# push a value onto a hash slot, constructing an array if necessary
method !_push_construct(Mu $key, Mu $value) {
if self.exists_key($key) {
if self.{$key}.^isa(Array) {
self.{$key}.push($value);
} else {
my Mu $tmp = self.{$key};
self.{$key} = [ $tmp, $value];
}
} else {
self.{$key} = $value;
}
}
my role TypedHash[::TValue] does Associative[TValue] {
method at_key(::?CLASS:D: $key is copy) is rw {
$key = $key.Str;
if self.exists_key($key) {
nqp::findmethod(EnumMap, 'at_key')(self, $key);
}
else {
nqp::p6bindattrinvres(
(my \v := nqp::p6scalarfromdesc(nqp::getattr(self, Hash, '$!descriptor'))),
Scalar,
'$!whence',
-> { nqp::findmethod(EnumMap, 'STORE_AT_KEY')(self, $key, v) }
);
}
}
method STORE_AT_KEY(Str \key, TValue $x) is rw {
my $v :=
nqp::p6scalarfromdesc(nqp::getattr(self, Hash, '$!descriptor'));
nqp::findmethod(EnumMap, 'STORE_AT_KEY')(self, key, $v = $x);
}
method bind_key($key, TValue \bindval) is rw {
nqp::defined(nqp::getattr(self, EnumMap, '$!storage')) ||
nqp::bindattr(self, EnumMap, '$!storage', nqp::hash());
nqp::bindkey(
nqp::getattr(self, EnumMap, '$!storage'),
nqp::unbox_s($key.Str),
bindval)
}
multi method perl(::?CLASS:D \SELF:) {
'Hash['
~ TValue.perl
~ '].new('
~ self.pairs.map({.perl}).join(', ')
~ ')';
}
}
my role TypedHash[::TValue, ::TKey] does Associative[TValue] {
has $!keys;
method keyof () { TKey }
method at_key(::?CLASS:D: TKey \key) is rw {
my $key_which = key.WHICH;
if self.exists_key(key) {
nqp::findmethod(EnumMap, 'at_key')(self, $key_which);
}
else {
nqp::p6bindattrinvres(
(my \v := nqp::p6scalarfromdesc(nqp::getattr(self, Hash, '$!descriptor'))),
Scalar,
'$!whence',
-> {
nqp::defined(nqp::getattr(self, $?CLASS, '$!keys')) ||
nqp::bindattr(self, $?CLASS, '$!keys', nqp::hash());
nqp::defined(nqp::getattr(self, EnumMap, '$!storage')) ||
nqp::bindattr(self, EnumMap, '$!storage', nqp::hash());
nqp::bindkey(
nqp::getattr(self, $?CLASS, '$!keys'),
nqp::unbox_s($key_which),
key);
nqp::bindkey(
nqp::getattr(self, EnumMap, '$!storage'),
nqp::unbox_s($key_which),
v);
});
}
}
method STORE_AT_KEY(TKey \key, TValue $x) is rw {
my $key_which = key.WHICH;
nqp::defined(nqp::getattr(self, $?CLASS, '$!keys')) ||
nqp::bindattr(self, $?CLASS, '$!keys', nqp::hash());
nqp::defined(nqp::getattr(self, EnumMap, '$!storage')) ||
nqp::bindattr(self, EnumMap, '$!storage', nqp::hash());
nqp::bindkey(
nqp::getattr(self, $?CLASS, '$!keys'),
nqp::unbox_s($key_which),
key);
my $v :=
nqp::p6scalarfromdesc(nqp::getattr(self, Hash, '$!descriptor'));
nqp::bindkey(
nqp::getattr(self, EnumMap, '$!storage'),
nqp::unbox_s($key_which),
$v = $x);
}
method bind_key(TKey \key, TValue \bindval) is rw {
my $key_which = key.WHICH;
nqp::defined(nqp::getattr(self, $?CLASS, '$!keys')) ||
nqp::bindattr(self, $?CLASS, '$!keys', nqp::hash());
nqp::defined(nqp::getattr(self, EnumMap, '$!storage')) ||
nqp::bindattr(self, EnumMap, '$!storage', nqp::hash());
nqp::bindkey(
nqp::getattr(self, $?CLASS, '$!keys'),
nqp::unbox_s($key_which),
key);
nqp::bindkey(
nqp::getattr(self, EnumMap, '$!storage'),
nqp::unbox_s($key_which),
bindval)
}
method exists (TKey \key) { # is DEPRECATED doesn't work in settings
DEPRECATED("the :exists adverb");
self.exists_key(key);
}
method exists_key(TKey \key) {
nqp::defined($!keys)
?? nqp::p6bool(nqp::existskey($!keys, nqp::unbox_s(key.WHICH)))
!! False
}
method keys(EnumMap:) {
return unless self.DEFINITE && nqp::defined($!keys);
HashIter.new(self, :keystore($!keys), :k).list
}
method kv(EnumMap:) {
return unless self.DEFINITE && nqp::defined($!keys);
HashIter.new(self, :keystore($!keys), :kv).list
}
method values(EnumMap:) {
return unless self.DEFINITE && nqp::defined($!keys);
HashIter.new(self, :keystore($!keys), :v).list
}
method pairs(EnumMap:) {
return unless self.DEFINITE && nqp::defined($!keys);
HashIter.new(self, :keystore($!keys), :pairs).list
}
method invert(EnumMap:) {
return unless self.DEFINITE && nqp::defined($!keys);
HashIter.new(self, :keystore($!keys), :invert).list
}
multi method perl(::?CLASS:D \SELF:) {
'Hash['
~ TValue.perl
~ ','
~ TKey.perl
~ '].new('
~ self.pairs.map({.perl}).join(', ')
~ ')';
}
}
method PARAMETERIZE_TYPE(Mu $t, |c) {
if c.elems == 0 {
# my $what := self but TypedHash[$t.WHAT]; # too early in bootstrap
my $what := self.HOW.mixin(self.WHAT, TypedHash[$t.WHAT]);
# needs to be done in COMPOSE phaser when that works
$what.HOW.set_name(self,"{self.HOW.name(self)}[{$t.HOW.name($t)}]");
$what;
}
elsif c.elems == 1 {
my $what := self.HOW.mixin(self.WHAT, TypedHash[$t.WHAT,c[0]]);
# my $what := self but TypedHash[$t.WHAT, c[0]]; # too early in bootstrap
# needs to be done in COMPOSE phaser when that works
$what.HOW.set_name(self,"{self.HOW.name(self)}[{$t.HOW.name($t)},{c[0].HOW.name(c[0])}]");
$what;
}
else {
die "Can only type-constraint Hash with [ValueType] or [ValueType,KeyType]";
}
}
}
sub circumfix:<{ }>(*@elems) { my $ = Hash.new(@elems) }
sub hash(*@a, *%h) { my % = @a, %h }