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Internals.pm
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Internals.pm
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my class DateTime { ... }
my role IO { ... }
my class IO::Handle { ... }
my class IO::Path { ... }
my class Rakudo::Metaops { ... }
my class X::Assignment::ToShaped { ... }
my class X::Cannot::Lazy { ... }
my class X::IllegalDimensionInShape { ... }
my class X::IllegalOnFixedDimensionArray { ... }
my class X::Localizer::NoContainer { ... }
my class X::Str::Sprintf::Directives::BadType { ... }
my class X::Str::Sprintf::Directives::Count { ... }
my class X::Str::Sprintf::Directives::Unsupported { ... }
my class X::TypeCheck { ... }
my class Rakudo::Internals {
# for use in nqp::splice
my $empty := nqp::list;
our class CompilerServices {
has Mu $!compiler;
has Mu $!current-match;
method generate_accessor(str $name, Mu \package_type, str $attr_name, Mu \type, int $rw) {
$!compiler.generate_accessor(
$!current-match, $name, package_type, $attr_name, type, $rw);
}
method generate_buildplan_executor(Mu \obj, Mu \buildplan) {
$!compiler.generate_buildplan_executor(
$!current-match, obj, buildplan)
}
}
# rotate nqp list to another given list without using push/pop
method RotateListToList(\from,\n,\to) {
nqp::stmts(
(my $from := nqp::getattr(from,List,'$!reified')),
nqp::if((my int $elems = nqp::elems($from)),
nqp::stmts(
(my $to := nqp::getattr(to,List,'$!reified')),
(my int $i = -1),
(my int $j = nqp::mod_i(nqp::sub_i(nqp::sub_i($elems,1),n),$elems)),
nqp::if(nqp::islt_i($j,0),($j = nqp::add_i($j,$elems))),
nqp::while(
nqp::islt_i(($i = nqp::add_i($i,1)),$elems),
nqp::bindpos(
$to,
($j = nqp::mod_i(nqp::add_i($j,1),$elems)),
nqp::atpos($from,$i)
),
),
),
),
to
)
}
method RANGE-AS-ints ($range, $exception) {
# Convert a Range to min/max values that can fit into an `int`
# Treats values smaller than int.Range.min as int.Range.min
# Treats values larger than int.Range.max as int.Range.max
# Throws $exception for non-Numeric ranges or ranges with any NaN endpoints
# If $exception is a Str, calls `die $exception`
my $min := $range.min;
my $max := $range.max;
nqp::unless(
nqp::istype($min, Numeric) && nqp::isfalse($min.isNaN)
&& nqp::istype($max, Numeric) && nqp::isfalse($max.isNaN),
nqp::if(nqp::istype($exception, Str), die($exception), $exception.throw));
# Get rid of Infs
$min := Int($min + $range.excludes-min) // -2**63;
$max := Int($max - $range.excludes-max) // 2**63-1;
# we have isbig_I, but it tells whether the value is above max int32 value
nqp::if( nqp::islt_I(nqp::decont($min), -2**63),
$min = -2**63);
nqp::if( nqp::isgt_I(nqp::decont($max), 2**63-1),
$max = 2**63-1);
($min, $max);
}
method SET_LEADING_DOCS($obj, $docs) {
my $current_why := $obj.WHY;
if $current_why {
my $end := nqp::elems($*POD_BLOCKS) - 1;
my $i := $end;
while $i >= 0 {
if $docs === nqp::atpos($*POD_BLOCKS, $i) {
nqp::splice($*POD_BLOCKS, $empty, $i, 1);
last;
}
$i := $i - 1;
}
$current_why._add_leading(~$docs);
} else {
$obj.set_why($docs);
}
}
method SET_TRAILING_DOCS($obj, $docs) {
my $current_why := $obj.WHY;
if $current_why {
$current_why._add_trailing(~$docs);
} else {
$obj.set_why($docs);
$*POD_BLOCKS.push($docs);
}
}
method EXPORT_SYMBOL(\exp_name, @tags, Mu \sym) {
my @export_packages = $*EXPORT;
for flat nqp::hllize(@*PACKAGES) {
unless .WHO.EXISTS-KEY('EXPORT') {
.WHO<EXPORT> := Metamodel::PackageHOW.new_type(:name('EXPORT'));
.WHO<EXPORT>.^compose;
}
@export_packages.append: .WHO<EXPORT>;
}
for @export_packages -> $p {
for @tags -> $tag {
my $install_in;
if $p.WHO.EXISTS-KEY($tag) {
$install_in := $p.WHO.{$tag};
}
else {
$install_in := Metamodel::PackageHOW.new_type(:name($tag));
$install_in.^compose;
$p.WHO{$tag} := $install_in;
}
if $install_in.WHO.EXISTS-KEY(exp_name) {
unless ($install_in.WHO){exp_name} =:= sym {
X::Export::NameClash.new(symbol => exp_name).throw;
}
}
$install_in.WHO{exp_name} := sym;
}
}
0;
}
method createENV(int $bind) {
nqp::stmts(
(my $hash := nqp::hash),
(my $iter := nqp::iterator(nqp::getenvhash)),
nqp::while(
$iter,
nqp::bindkey(
$hash,
nqp::iterkey_s(nqp::shift($iter)),
nqp::if(
$bind,
val(nqp::iterval($iter)),
nqp::p6scalarfromdesc(nqp::null) = val(nqp::iterval($iter))
)
)
),
nqp::p6bindattrinvres(
nqp::create(nqp::if($bind,Map,Hash)),Map,'$!storage',$hash
)
)
}
# Helper method for prefix:<let>/prefix:<temp>, which really do the same
# thing apart from where they store data. Takes the IteratonBuffer in
# which to save data, the container to be inspected, and the type of op
# for any error messaging.
method TEMP-LET(\restore, \cont, str $localizer) is raw {
nqp::stmts(
(my int $i = nqp::elems(restore)),
nqp::while(
nqp::isgt_i($i,0),
nqp::if(
nqp::eqaddr(nqp::atpos(restore,($i = nqp::sub_i($i,2))),cont),
(return-rw cont)
)
),
nqp::if(
nqp::istype(cont,Failure),
cont.exception.throw,
nqp::stmts(
nqp::push(restore,cont),
nqp::if(
nqp::iscont(cont),
nqp::push(restore,nqp::decont(cont)),
nqp::if(
nqp::istype(cont,Array),
nqp::push(restore,my @ = cont),
nqp::if(
nqp::istype(cont,Hash),
nqp::push(restore,my % = cont),
nqp::stmts(
nqp::pop(restore), # lose the erroneously pushed value
X::Localizer::NoContainer.new(:$localizer).throw
)
)
)
)
)
),
cont
)
}
# fast whitespace trim: str to trim, str to store trimmed str
method TRIM(\string, \trimmed --> Nil) {
my int $pos = nqp::chars(string) - 1;
my int $left =
nqp::findnotcclass(nqp::const::CCLASS_WHITESPACE, string, 0, $pos + 1);
$pos = $pos - 1
while nqp::isge_i($pos, $left)
&& nqp::iscclass(nqp::const::CCLASS_WHITESPACE, string, $pos);
trimmed = nqp::islt_i($pos, $left)
?? ''
!! nqp::substr(string, $left, $pos + 1 - $left);
Nil
}
# fast key:value split: Str to split, str to store key, str to store value
method KEY_COLON_VALUE(Str $command, \key, \value --> Nil) {
my str $str = nqp::unbox_s($command);
my int $index = nqp::index($str,':');
if nqp::isgt_i($index,0) {
self.TRIM(nqp::substr($str,0,$index),key);
self.TRIM(nqp::substr($str,$index + 1,nqp::chars($str) - $index),value);
}
elsif nqp::islt_i($index,0) {
self.TRIM($str,key);
value = '';
}
else {
key = '';
self.TRIM(nqp::substr($str,1,nqp::chars($str) - 1),value);
}
Nil
}
# key space value split: Str to split, str to store key, str to store value
method KEY_SPACE_VALUE(Str $command, \key, \value --> Nil) {
my str $str = nqp::unbox_s($command);
my int $index = nqp::index($str,' ');
if nqp::isgt_i($index,0) {
key = nqp::substr($str,0,$index);
value = nqp::substr($str,$index + 1,nqp::chars($str) - $index);
}
elsif nqp::islt_i($index,0) {
key = $str;
value = '';
}
else {
key = '';
value = nqp::substr($str,1,nqp::chars($str) - 1);
}
Nil
}
my $encodings := nqp::hash(
# fast mapping for identicals
'utf8', 'utf8',
'utf16', 'utf16',
'utf32', 'utf32',
'ascii', 'ascii',
'iso-8859-1', 'iso-8859-1',
'windows-1252', 'windows-1252',
# with dash
'utf-8', 'utf8',
'utf-16', 'utf16',
'utf-32', 'utf32',
# according to http://de.wikipedia.org/wiki/ISO-8859-1
'iso_8859-1:1987', 'iso-8859-1',
'iso_8859-1', 'iso-8859-1',
'iso-ir-100', 'iso-8859-1',
'latin1', 'iso-8859-1',
'latin-1', 'iso-8859-1',
'csisolatin1', 'iso-8859-1',
'l1', 'iso-8859-1',
'ibm819', 'iso-8859-1',
'cp819', 'iso-8859-1',
);
method NORMALIZE_ENCODING(Str:D \encoding) {
my str $key = nqp::unbox_s(encoding);
if nqp::existskey($encodings,$key) {
nqp::atkey($encodings,$key)
}
else {
my str $lc = nqp::lc($key);
nqp::existskey($encodings,$lc)
?? nqp::atkey($encodings,$lc)
!! nqp::lc($key)
}
}
# 1 if all elements of given type, otherwise 0
method ALL_TYPE(\values,\type) {
nqp::if(
(my int $elems = values.elems), # reifies
nqp::stmts(
(my $values := nqp::getattr(values,List,'$!reified')),
(my int $i = -1),
nqp::while(
nqp::islt_i(($i = nqp::add_i($i,1)),$elems)
&& nqp::istype(nqp::atpos($values,$i),type),
nqp::null
),
nqp::iseq_i($i,$elems)
)
)
}
# 1 if all elems defined && type, otherwise 0
method ALL_DEFINED_TYPE(\values,\type) {
nqp::if(
(my int $elems = values.elems), # reifies
nqp::stmts(
(my $values := nqp::getattr(values,List,'$!reified')),
(my int $i = -1),
nqp::while(
nqp::islt_i(($i = nqp::add_i($i,1)),$elems)
&& nqp::istype(nqp::atpos($values,$i),type)
&& nqp::defined(nqp::atpos($values,$i)),
nqp::null
),
nqp::iseq_i($i,$elems)
)
)
}
# 1 if any element of defined && type, otherwise 0
method ANY_DEFINED_TYPE(\values,\type) {
nqp::if(
(my int $elems = values.elems), # reifies
nqp::stmts(
(my $values := nqp::getattr(values,List,'$!reified')),
(my int $i = -1),
nqp::until(
nqp::iseq_i(($i = nqp::add_i($i,1)),$elems)
|| (nqp::istype(nqp::atpos($values,$i),type)
&& nqp::defined(nqp::atpos($values,$i))),
nqp::null
),
nqp::isne_i($i,$elems)
)
)
}
method TRANSPOSE(Str:D $string, Str:D $original, Str:D $final) {
nqp::join($final,nqp::split($original,$string))
}
method TRANSPOSE-ONE(Str:D $string, Str:D $original, Str:D $final) {
nqp::if(
nqp::iseq_i((my int $index = nqp::index($string, $original)), -1),
$string,
nqp::concat(
nqp::substr($string,0,$index),
nqp::concat(
$final,
nqp::substr($string,nqp::add_i($index,nqp::chars($original)))
)
)
)
}
my constant \SHAPE-STORAGE-ROOT := do {
my Mu $root := nqp::newtype(nqp::knowhow(), 'Uninstantiable');
nqp::setparameterizer($root, -> $, $key {
my $dims := $key.elems.pred;
my $type := $key.AT-POS(1);
my $dim_type := nqp::newtype($key.AT-POS(0), 'MultiDimArray');
nqp::composetype($dim_type, nqp::hash('array',
nqp::hash('dimensions', $dims, 'type', $type)));
nqp::settypehll($dim_type, 'perl6');
$dim_type
});
nqp::settypehll($root, 'perl6');
$root
}
method SHAPED-ARRAY-STORAGE(\spec, Mu \meta-obj, Mu \type) {
nqp::stmts(
(my $types := nqp::list(meta-obj)), # meta + type of each dimension
(my $dims := nqp::list_i), # elems per dimension
nqp::if(
nqp::istype(spec,List),
nqp::stmts( # potentially more than 1 dim
(my $spec := nqp::getattr(nqp::decont(spec),List,'$!reified')),
(my int $elems = nqp::elems($spec)),
(my int $i = -1),
nqp::while(
nqp::islt_i(($i = nqp::add_i($i,1)),$elems),
nqp::if(
nqp::istype((my $dim := nqp::atpos($spec,$i)),Whatever),
X::NYI.new(feature => 'Jagged array shapes').throw,
nqp::if(
nqp::isbig_I(nqp::decont($dim := nqp::decont($dim.Int)))
|| nqp::isle_i($dim,0),
X::IllegalDimensionInShape.new(:$dim).throw,
nqp::stmts(
nqp::push($types,type),
nqp::push_i($dims,$dim)
)
)
)
)
),
nqp::stmts( # only 1 dim
nqp::push($types,type),
nqp::push_i($dims,spec.Int)
)
),
nqp::setdimensions(
nqp::create(nqp::parameterizetype(SHAPE-STORAGE-ROOT,$types)),
$dims
)
)
}
our role ShapedArrayCommon {
method !illegal($operation) {
X::IllegalOnFixedDimensionArray.new(:$operation).throw
}
proto method pop(::?CLASS:D: |) { self!illegal("pop") }
proto method shift(::?CLASS:D: |) { self!illegal("shift") }
proto method splice(::?CLASS:D: |) { self!illegal("splice") }
proto method push(|c) is nodal {
self.DEFINITE ?? self!illegal("push") !! self.Any::push(|c)
}
proto method append(|c) is nodal {
self.DEFINITE ?? self!illegal("append") !! self.Any::append(|c)
}
proto method unshift(|c) is nodal {
self.DEFINITE ?? self!illegal("unshift") !! self.Any::unshift(|c)
}
proto method prepend(|c) is nodal {
self.DEFINITE ?? self!illegal("prepend") !! self.Any::prepend(|c)
}
multi method STORE(::?CLASS:D: Slip:D \slip) {
nqp::if(
nqp::eqaddr(slip,Empty),
(die "Cannot Empty a shaped array as its size is fixed"),
self.STORE(slip.List)
)
}
# illegal unless overridden for 1dimmed case
method reverse(::?CLASS:D: |) { self!illegal("reverse") }
method rotate(::?CLASS:D: |) { self!illegal("rotate") }
multi method values(::?CLASS:D:) { Seq.new(self.iterator) }
multi method keys(::?CLASS:D:) {
Seq.new(Rakudo::Iterator.ShapeIndex(self.shape))
}
multi method invert(::?CLASS:D:) {
Seq.new(Rakudo::Iterator.Invert(self.pairs.iterator))
}
# These work on the flat view
method roll(|c) { self.flat.roll(|c) }
method pick(|c) { self.flat.pick(|c) }
method permutations(|c) { self.flat.permutations(|c) }
method combinations(|c) { self.flat.combinations(|c) }
method join(|c) { self.flat.join(|c) }
method sort(|c) { self.flat.sort(|c) }
multi method gist(::?CLASS:D:) {
self.gistseen('Array', { self!gist([], self.shape) })
}
method !gist(@path, @dims) {
if @dims.elems == 1 {
'[' ~ (^@dims[0]).map({ self.AT-POS(|@path, $_).gist }).join(' ') ~ ']';
}
else {
my @nextdims = @dims[1..^@dims.elems];
'[' ~ (^@dims[0]).map({ self!gist((flat @path, $_), @nextdims) }).join(' ') ~ ']';
}
}
multi method perl(::?CLASS:D \SELF:) {
SELF.perlseen('Array', {
self.^name
~ '.new(:shape'
~ nqp::decont(self.shape).perl
~ ', '
~ self!perl([], self.shape)
~ ')'
~ (nqp::iscont(SELF) ?? '.item' !! '')
})
}
method !perl(@path, @dims) {
if @dims.elems == 1 {
'[' ~
(^@dims[0]).map({ nqp::decont(self.AT-POS(|@path, $_)).perl }).join(', ') ~
',' x (@dims[0] == 1 && nqp::istype(self.AT-POS(|@path, 0), Iterable)) ~
']'
}
else {
my @nextdims = @dims[1..^@dims.elems];
'[' x (@path.elems > 0) ~
(^@dims[0]).map({ self!perl((flat @path, $_), @nextdims) }).join(', ') ~
',' x (@dims[0] == 1) ~
']' x (@path.elems > 0)
}
}
multi method Slip() {
Slip.from-iterator(self.iterator)
}
proto method AT-POS(|) is raw {*}
multi method AT-POS(::?CLASS:U: |c) is raw {
self.Any::AT-POS(|c)
}
multi method AT-POS(::?CLASS:D:) is raw {
die "Must specify at least one index with {self.^name}.AT-POS"
}
proto method ASSIGN-POS(|) {*}
multi method ASSIGN-POS(::?CLASS:U: |c) {
self.Any::ASSIGN-POS(|c)
}
multi method ASSIGN-POS(::?CLASS:D:) {
die "Must specify at least one index and a value with {self.^name}.ASSIGN-POS"
}
multi method ASSIGN-POS(::?CLASS:D: $) {
die "Must specify at least one index and a value with {self.^name}.ASSIGN-POS"
}
proto method EXISTS-POS(|) {*}
multi method EXISTS-POS(::?CLASS:U: |c) {
self.Any::EXISTS-POS(|c)
}
multi method EXISTS-POS(::?CLASS:D:) {
die "Must specify at least one index with {self.^name}.EXISTS-POS"
}
}
our class SupplySequencer {
has &!on-data-ready;
has &!on-completed;
has &!on-error;
has $!buffer;
has int $!buffer-start-seq;
has int $!done-target;
has int $!bust;
has $!lock;
submethod BUILD(
:&!on-data-ready!, :&!on-completed!, :&!on-error! --> Nil) {
$!buffer := nqp::list();
$!buffer-start-seq = 0;
$!done-target = -1;
$!bust = 0;
$!lock := Lock::Async.new;
}
method process(Mu \seq, Mu \data, Mu \err) {
$!lock.protect: {
if err {
&!on-error(err);
$!bust = 1;
}
elsif nqp::isconcrete(data) {
my int $insert-pos = seq - $!buffer-start-seq;
nqp::bindpos($!buffer, $insert-pos, data);
self!emit-events();
}
else {
$!done-target = seq;
self!emit-events();
}
}
}
method !emit-events() {
unless $!bust {
until nqp::elems($!buffer) == 0 || nqp::isnull(nqp::atpos($!buffer, 0)) {
&!on-data-ready(nqp::shift($!buffer));
$!buffer-start-seq = $!buffer-start-seq + 1;
}
if $!buffer-start-seq == $!done-target {
&!on-completed();
}
}
}
}
my int $sprintfHandlerInitialized = 0;
method initialize-sprintf-handler(--> Nil) {
class SprintfHandler {
method mine($x) { nqp::reprname($x) eq "P6opaque"; }
method int($x) { $x.Int }
}
unless $sprintfHandlerInitialized {
nqp::sprintfaddargumenthandler(SprintfHandler.new);
$sprintfHandlerInitialized = 1;
}
}
method SUBSTR-START-OOR(\from,\max) {
X::OutOfRange.new(
:what('Start argument to substr'),
:got(from.gist),
:range("0.." ~ max),
:comment( nqp::istype(from, Callable) || -from > max
?? ''
!! "use *-{abs from} if you want to index relative to the end"),
);
}
method SUBSTR-CHARS-OOR(\chars) {
X::OutOfRange.new(
:what('Number of characters argument to substr'),
:got(chars.gist),
:range<0..^Inf>,
:comment("use *-{abs chars} if you want to index relative to the end"),
);
}
method SUBSTR-SANITY(Str \what, $start, $want, \from, \chars) {
my Int $max := what.chars;
from = nqp::istype($start, Callable)
?? $start($max)
!! nqp::istype($start, Range)
?? $start.min + $start.excludes-min
!! $start.Int;
Rakudo::Internals.SUBSTR-START-OOR(from,$max).fail
if from < 0 || from > $max;
chars = nqp::istype($start, Range)
?? $start == Inf
?? $max - from
!! $start.max - $start.excludes-max - from + 1
!! $want.defined
?? $want === Inf
?? $max - from
!! nqp::istype($want, Callable)
?? $want($max - from)
!! (nqp::istype($want,Int) ?? $want !! $want.Int)
!! $max - from;
chars < 0 ?? Rakudo::Internals.SUBSTR-CHARS-OOR(chars).fail !! 1;
}
my $IS-WIN = do {
my str $os = Rakudo::Internals.TRANSPOSE(nqp::lc(
#?if jvm
nqp::atkey(nqp::jvmgetproperties,'os.name')
#?endif
#?if !jvm
nqp::atkey(nqp::backendconfig,'osname')
#?endif
)," ","");
nqp::p6bool(
nqp::iseq_s($os,'mswin32')
|| nqp::iseq_s($os,'mingw')
|| nqp::iseq_s($os,'msys')
|| nqp::iseq_s($os,'cygwin')
)
}
method IS-WIN() { $IS-WIN }
method NUMERIC-ENV-KEY(\key) {
%*ENV.EXISTS-KEY(key)
?? %*ENV.AT-KEY(key)
?? +%*ENV.AT-KEY(key)
!! 0
!! Nil
}
method error-rcgye() { # red clear green yellow eject
self.NUMERIC-ENV-KEY("RAKUDO_ERROR_COLOR") // !self.IS-WIN
?? ("\e[31m", "\e[0m", "\e[32m", "\e[33m", "\x[23CF]")
!! ("", "", "", "", "<HERE>");
}
my num $init-time-num = nqp::time_n;
method INITTIME() is raw { $init-time-num }
my $init-thread := nqp::currentthread();
method INITTHREAD() { $init-thread }
my $escapes := nqp::hash(
"\0", '\0',
'$', '\$',
'@', '\@',
'%', '\%',
'&', '\&',
'{', '\{',
"\b", '\b',
"\x0A", '\n',
"\r", '\r',
"\t", '\t',
'"', '\"',
'\\', '\\\\',
);
method PERLIFY-STR(Str \string) {
sub char-to-escapes(Str $char) {
#?if moar
'\x[' ~ $char.NFC.list.map({ .fmt('%0x') }).join(',') ~ ']'
#?endif
#?if !moar
$char.ord.fmt('\x[%x]')
#?endif
}
# Under NFG-supporting implementations, must be sure that any leading
# combiners are escaped, otherwise they will be combined onto the "
# under concatenation closure, which ruins round-tripping. Also handle
# the \r\n grapheme correctly.
my str $to-escape = nqp::unbox_s(string);
my str $escaped = '';
my int $chars = nqp::chars($to-escape);
my int $i = -1;
while ($i = $i + 1) < $chars {
my str $char = nqp::substr($to-escape, $i, 1);
#?if moar
my int $ord = nqp::ord($char);
$escaped ~= nqp::isge_i($ord,256)
&& +uniprop($ord,'Canonical_Combining_Class')
?? char-to-escapes($char)
!! nqp::iseq_s($char,"\r\n") ?? '\r\n' !!
#?endif
#?if !moar
$escaped ~=
#?endif
nqp::existskey($escapes,$char)
?? nqp::atkey($escapes,$char)
!! nqp::iscclass(nqp::const::CCLASS_PRINTING,$char,0)
?? $char
!! char-to-escapes($char);
}
$escaped
}
# easy access to compile options
my Mu $compiling-options := nqp::atkey(%*COMPILING, '%?OPTIONS');
# running with --ll-exception
method LL-EXCEPTION() {
nqp::existskey($compiling-options, 'll-exception')
?? '--ll-exception'
!! Empty
}
# running with --profile
method PROFILE() {
nqp::existskey($compiling-options, 'profile')
?? '--profile'
!! Empty
}
# running with --optimize=X
method OPTIMIZE() {
nqp::existskey($compiling-options, 'optimize')
?? '--optimize=' ~ nqp::atkey($compiling-options, 'optimize')
!! Empty
}
# whatever specified with -I
method INCLUDE() {
nqp::existskey($compiling-options,'I')
?? do {
my $I := nqp::atkey($compiling-options,'I');
nqp::islist($I) ?? $I !! nqp::list($I)
}
!! nqp::list()
}
#?if moar
method PRECOMP-EXT() { "moarvm" }
method PRECOMP-TARGET() { "mbc" }
#?endif
#?if jvm
method PRECOMP-EXT() { "jar" }
method PRECOMP-TARGET() { "jar" }
#?endif
method get-local-timezone-offset() {
my $utc = time;
my Mu $fia := nqp::p6decodelocaltime(nqp::unbox_i($utc));
DateTime.new(
:year(nqp::atpos_i($fia,5)),
:month(nqp::atpos_i($fia,4)),
:day(nqp::atpos_i($fia,3)),
:hour(nqp::atpos_i($fia,2)),
:minute(nqp::atpos_i($fia,1)),
:second(nqp::atpos_i($fia,0)),
).posix(True) - $utc;
}
# Keep track of the differences between TAI and UTC for internal use.
# The "BEGIN" and "END" comments are for tools/update-tai-utc.pl.
#
# Some handy tables:
# http://tf.nist.gov/pubs/bulletin/leapsecond.htm
# http://hpiers.obspm.fr/eop-pc/earthor/utc/TAI-UTC_tab.html
my int $initial-offset = 10;
# TAI - UTC at the Unix epoch (1970-01-01T00:00:00Z).
my $dates := nqp::list_s(
#BEGIN leap-second-dates
'1972-06-30',
'1972-12-31',
'1973-12-31',
'1974-12-31',
'1975-12-31',
'1976-12-31',
'1977-12-31',
'1978-12-31',
'1979-12-31',
'1981-06-30',
'1982-06-30',
'1983-06-30',
'1985-06-30',
'1987-12-31',
'1989-12-31',
'1990-12-31',
'1992-06-30',
'1993-06-30',
'1994-06-30',
'1995-12-31',
'1997-06-30',
'1998-12-31',
'2005-12-31',
'2008-12-31',
'2012-06-30',
'2015-06-30',
'2016-12-31',
#END leap-second-dates
);
# our %leap-seconds =
# @leap-second-dates Z=> $initial-offset + 1 .. *;
# So for any date $d in @leap-second-dates, $d 23:59:00 UTC
# is the leap second that made (or will make) UTC
# %leap-seconds{$d} seconds behind TAI.
# Ambiguous POSIX times.
my $posixes := nqp::list_i(
#BEGIN leap-second-posix
78796800,
94694400,
126230400,
157766400,
189302400,
220924800,
252460800,
283996800,
315532800,
362793600,
394329600,
425865600,
489024000,
567993600,
631152000,
662688000,
709948800,
741484800,
773020800,
820454400,
867715200,
915148800,
1136073600,
1230768000,
1341100800,
1435708800,
1483228800,
#END leap-second-posix
);
my int $elems = nqp::elems($dates);
method is-leap-second-date(\date) {
nqp::p6bool(
nqp::stmts(
(my str $date = date),
(my int $i = -1),
nqp::while(
nqp::islt_i(($i = nqp::add_i($i,1)),$elems)
&& nqp::isgt_s($date,nqp::atpos_s($dates,$i)),
nqp::null
),
nqp::islt_i($i,$elems) && nqp::iseq_s($date,nqp::atpos_s($dates,$i))
)
)
}
method tai-from-posix(\posix, int $prefer-leap-second) {
nqp::stmts(
(my int $p = posix.floor),
(my int $i = -1),
nqp::while(
nqp::islt_i(($i = nqp::add_i($i,1)),$elems)
&& nqp::isgt_i($p,nqp::atpos_i($posixes,$i)),
nqp::null
),
posix + nqp::add_i(
nqp::add_i($initial-offset,$i),
nqp::islt_i($i,$elems)
&& nqp::not_i($prefer-leap-second)
&& nqp::iseq_i($p,nqp::atpos_i($posixes,$i))
)
)
}
method posix-from-tai(\tai) {
nqp::stmts(
(my int $t = tai.floor - $initial-offset),
(my int $i = -1),
nqp::while(
nqp::islt_i(($i = nqp::add_i($i,1)),$elems)
&& nqp::islt_i(nqp::atpos_i($posixes,$i),nqp::sub_i($t,$i)),
nqp::null
),
(tai - nqp::add_i($initial-offset,$i),
nqp::p6bool(
nqp::islt_i($i,$elems)
&& nqp::iseq_i(nqp::atpos_i($posixes,$i),nqp::sub_i($t,$i))
)
)
)
}
my $initializers;
#nqp::print("running mainline\n");
#method INITIALIZERS() { $initializers }
method REGISTER-DYNAMIC(Str:D \name, &code, Str $version = '6.c' --> Nil) {
#nqp::say('Registering ' ~ name);
nqp::stmts(
(my str $with = nqp::concat($version, nqp::concat("\0", name))),
nqp::if(
nqp::existskey(
nqp::unless($initializers,$initializers := nqp::hash),
$with
),
(die "Already have initializer for '{name}' ('$version')"),
nqp::bindkey($initializers,$with,&code)
),
nqp::unless( # first come, first kept
nqp::existskey($initializers,nqp::unbox_s(name)),
nqp::bindkey($initializers,nqp::unbox_s(name),&code)
)
)
}
method INITIALIZE-DYNAMIC(str \name) is raw {
#nqp::say('Initializing ' ~ name);
nqp::stmts(
(my str $with = nqp::concat(
nqp::getcomp('perl6').language_version, nqp::concat("\0", name))),
nqp::if(
nqp::existskey(
nqp::unless($initializers,$initializers := nqp::hash),
$with
),
nqp::atkey($initializers,$with)(),
nqp::if(
nqp::existskey($initializers,name),
nqp::atkey($initializers,name)(),
Failure.new(X::Dynamic::NotFound.new(:name(name)))
)
)
)
}
method EXPAND-LITERAL-RANGE(Str:D \x,$list) {
my str $s = nqp::unbox_s(x);
my int $chars = nqp::chars($s);
my Mu $result := nqp::list();
my int $start = 1;
my int $found = nqp::index($s,'..',$start);
# found and not at the end without trail
while nqp::isne_i($found,-1) && nqp::isne_i($found,$chars-2) {
if $found - $start -> $unsplit {
nqp::splice(
$result,
nqp::split("",nqp::substr($s,$start - 1,$unsplit)),
nqp::elems($result),
0
)
}
# add the range excluding last (may be begin point next range)
my int $from = nqp::ordat($s,$found - 1) - 1;
my int $to = nqp::ordat($s,$found + 2);
nqp::push($result,nqp::chr($from))
while nqp::islt_i($from = $from + 1,$to);
# look for next range
$found = nqp::index($s,'..',$start = $found + 3);
}