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control.pm
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control.pm
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my class X::ControlFlow::Return { ... }
my class X::Eval::NoSuchLang { ... }
my class PseudoStash { ... }
my class Label { ... }
sub THROW(int $type, Mu \arg) {
my Mu $ex := nqp::newexception();
nqp::setpayload($ex, arg);
nqp::setextype($ex, $type);
nqp::throw($ex);
arg;
}
sub THROW-NIL(int $type) {
my Mu $ex := nqp::newexception();
# nqp::setpayload($ex, Nil);
nqp::setextype($ex, $type);
nqp::throw($ex);
Nil
}
sub RETURN-PARCEL(Mu \parcel) is rw {
my Mu $storage := nqp::getattr(parcel, Parcel, '$!storage');
nqp::iseq_i(nqp::elems($storage), 0)
?? Nil
!! (nqp::iseq_i(nqp::elems($storage), 1)
?? nqp::shift($storage)
!! parcel)
}
my &return-rw := -> | {
my $parcel :=
&RETURN-PARCEL(nqp::p6parcel(nqp::p6argvmarray(), Nil));
nqp::p6routinereturn($parcel);
$parcel
};
my &return := -> | {
my $parcel :=
&RETURN-PARCEL(nqp::p6parcel(nqp::p6argvmarray(), Nil));
nqp::p6routinereturn(nqp::p6recont_ro($parcel));
$parcel
};
# RT #122732 - control operator crossed continuation barrier
#?if jvm
my &take-rw := -> | {
my $parcel := &RETURN-PARCEL(nqp::p6parcel(nqp::p6argvmarray(), Nil));
THROW(nqp::const::CONTROL_TAKE, $parcel);
}
#?endif
#?if !jvm
proto sub take-rw(|) { * }
multi sub take-rw() { die "take-rw without parameters doesn't make sense" }
multi sub take-rw(\x) { THROW(nqp::const::CONTROL_TAKE, x) }
multi sub take-rw(|) {
my $parcel := &RETURN-PARCEL(nqp::p6parcel(nqp::p6argvmarray(), Nil));
THROW(nqp::const::CONTROL_TAKE, $parcel);
}
#?endif
# RT #122732 - control operator crossed continuation barrier
#?if jvm
my &take := -> | {
my $parcel := &RETURN-PARCEL(nqp::p6parcel(nqp::p6argvmarray(), Nil));
THROW( nqp::const::CONTROL_TAKE, nqp::p6recont_ro($parcel) );
$parcel
}
#?endif
#?if !jvm
proto sub take(|) { * }
multi sub take() { die "take without parameters doesn't make sense" }
multi sub take(\x) { THROW(nqp::const::CONTROL_TAKE,nqp::p6recont_ro(x)); x }
multi sub take(|) {
my $parcel := &RETURN-PARCEL(nqp::p6parcel(nqp::p6argvmarray(), Nil));
THROW( nqp::const::CONTROL_TAKE, nqp::p6recont_ro($parcel) );
$parcel
}
#?endif
proto sub goto(|) { * }
multi sub goto(Label:D \x) { x.goto }
proto sub last(|) { * }
multi sub last() { THROW-NIL(nqp::const::CONTROL_LAST) }
multi sub last(Label:D \x) { x.last }
proto sub next(|) { * }
multi sub next() { THROW-NIL(nqp::const::CONTROL_NEXT) }
multi sub next(Label:D \x) { x.next }
proto sub redo(|) { * }
multi sub redo() { THROW-NIL(nqp::const::CONTROL_REDO) }
multi sub redo(Label:D \x) { x.redo }
proto sub succeed(|) { * }
multi sub succeed() { THROW-NIL(nqp::const::CONTROL_SUCCEED) }
multi sub succeed(\x) { THROW(nqp::const::CONTROL_SUCCEED, nqp::decont(x)) }
multi sub succeed(|) {
my $parcel := &RETURN-PARCEL(nqp::p6parcel(nqp::p6argvmarray(), Nil));
THROW( nqp::const::CONTROL_SUCCEED, nqp::decont($parcel));
}
sub proceed() { THROW-NIL(nqp::const::CONTROL_PROCEED) }
my &callwith := -> *@pos, *%named {
my Mu $dispatcher := nqp::p6finddispatcher('callwith');
$dispatcher.exhausted ?? Nil !!
$dispatcher.call_with_args(|@pos, |%named)
};
my &nextwith := -> *@pos, *%named {
my Mu $dispatcher := nqp::p6finddispatcher('nextwith');
unless $dispatcher.exhausted {
nqp::p6routinereturn(nqp::p6recont_ro(
$dispatcher.call_with_args(|@pos, |%named)))
}
Nil
};
my &callsame := -> {
my Mu $dispatcher := nqp::p6finddispatcher('callsame');
$dispatcher.exhausted ?? Nil !!
$dispatcher.call_with_capture(
nqp::p6argsfordispatcher($dispatcher))
};
my &nextsame := -> {
my Mu $dispatcher := nqp::p6finddispatcher('nextsame');
unless $dispatcher.exhausted {
nqp::p6routinereturn(nqp::p6recont_ro(
$dispatcher.call_with_capture(
nqp::p6argsfordispatcher($dispatcher))))
}
Nil
};
my &lastcall := -> {
nqp::p6finddispatcher('lastcall').last();
True
};
my &samewith := -> *@pos, *%named {
my $my = callframe(1).my;
my $self = $my<self>;
die "Could not find 'self'" if !$self.DEFINITE;
my $dispatcher = $my<&?ROUTINE>.dispatcher
|| die "Could not find dispatcher";
$dispatcher( $self, |@pos, |%named );
}
proto sub die(|) {*};
multi sub die(Exception $e) { $e.throw }
multi sub die($payload = "Died") {
X::AdHoc.new(:$payload).throw
}
multi sub die(*@msg) {
X::AdHoc.new(payload => @msg.join).throw
}
multi sub warn(*@msg) {
my $msg = @msg.join || "Warning: something's wrong";
my $ex := nqp::newexception();
nqp::setmessage($ex, nqp::unbox_s($msg));
nqp::setextype($ex, nqp::const::CONTROL_WARN);
nqp::throw($ex);
0;
}
proto sub EVAL($, *%) {*}
multi sub EVAL(Cool $code, Str :$lang where { ($lang // '') eq 'perl5' }, PseudoStash :$context) {
my $eval_ctx := nqp::getattr(nqp::decont($context // CALLER::), PseudoStash, '$!ctx');
my $?FILES := 'EVAL_' ~ (state $no)++;
state $p5;
unless $p5 {
{
require Inline::Perl5;
CATCH {
X::Eval::NoSuchLang.new(:$lang).throw;
}
}
$p5 = ::("Inline::Perl5").default_perl5;
}
$p5.run($code);
}
multi sub EVAL(Cool $code, :$lang = 'perl6', PseudoStash :$context) {
my $eval_ctx := nqp::getattr(nqp::decont($context // CALLER::), PseudoStash, '$!ctx');
my $?FILES := 'EVAL_' ~ (state $no)++;
my $compiler := nqp::getcomp($lang);
X::Eval::NoSuchLang.new(:$lang).throw
if nqp::isnull($compiler);
my $compiled := $compiler.compile($code.Stringy, :outer_ctx($eval_ctx), :global(GLOBAL));
nqp::forceouterctx(nqp::getattr($compiled, ForeignCode, '$!do'), $eval_ctx);
$compiled();
}
proto sub EVALFILE($, *%) {*}
multi sub EVALFILE($filename, :$lang = 'perl6') {
EVAL slurp($filename), :$lang, :context(CALLER::);
}
sub exit($status = 0) {
state $exit;
$exit = $status;
once {
THE_END();
nqp::exit(nqp::unbox_i($exit.Int));
}
$exit;
}
sub THE_END {
my @END := nqp::p6list(nqp::getcurhllsym("@END_PHASERS"), Array, Mu);
while @END.shift -> $end { $end() };
}
my class Proc::Status { ... }
sub run(*@args ($, *@)) {
my $status = Proc::Status.new( :exitcode(255) );
try {
$status.status(nqp::p6box_i(nqp::spawn(
CLONE-LIST-DECONTAINERIZED(@args),
$*CWD.Str,
CLONE-HASH-DECONTAINERIZED(%*ENV),
)));
}
$status
}
sub shell($cmd) {
my $status = Proc::Status.new( :exitcode(255) );
try {
$status.status(nqp::p6box_i(nqp::shell(
$cmd,
$*CWD.Str,
CLONE-HASH-DECONTAINERIZED(%*ENV),
)));
}
$status
}
constant Inf = nqp::p6box_n(nqp::inf());
constant NaN = nqp::p6box_n(nqp::nan());
sub QX($cmd) {
my Mu $pio := nqp::openpipe(
nqp::unbox_s($cmd), $*CWD.Str, CLONE-HASH-DECONTAINERIZED(%*ENV), ''
);
fail "Unable to execute '$cmd'" unless $pio;
my $result = nqp::p6box_s(nqp::readallfh($pio));
nqp::closefh($pio);
$result;
}
sub EXHAUST(|) {
X::ControlFlow::Return.new.throw();
}
# True if given array does not just contain defined objects of given type
sub NOT_ALL_DEFINED_TYPE(\values,\type) {
for values {
return True unless nqp::defined($_) && nqp::istype($_,type);
}
False;
}
sub CLONE-HASH-DECONTAINERIZED(\hash) {
my Mu $clone := nqp::hash();
my Mu $iter := nqp::iterator(nqp::getattr(hash,EnumMap,'$!storage'));
my $e;
while $iter {
$e := nqp::shift($iter);
nqp::bindkey($clone, nqp::iterkey_s($e), nqp::decont(nqp::iterval($e)));
}
$clone;
}
sub CLONE-LIST-DECONTAINERIZED(*@list) {
my Mu $list-without := nqp::list();
nqp::push($list-without, nqp::decont(~$_)) for @list.eager;
$list-without;
}
# vim: ft=perl6 expandtab sw=4