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head

code

root

para

L<Examples| file:../examples/index.podlite>


L<Download |file:../download/index.podlite>


React

=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


HEADER

FOOTER

README

use NativeCall;

use Inline::J::Datatype;
use Inline::J::Helper;
use Inline::J::Conversion;

our constant BIN = Inline::J::Helper::get-binpath();
our constant LIB = Inline::J::Helper::get-library(BIN);
our constant PRO = Inline::J::Helper::get-profile(BIN);

sub JInit() returns Pointer is native(LIB) { * }
sub JDo(Pointer, Str) returns int64 is native(LIB) { * }
sub JGetR(Pointer) returns Str is native(LIB) { * }
sub JGetA(Pointer, int64, Str) returns int64 is native(LIB) { * }
sub JFree(Pointer) returns int64 is native(LIB) { * }
sub JGetLocale(Pointer) returns Str is native(LIB) { * }
sub JGetM(Pointer, Str, int64 is rw, int64 is rw, int64 is rw, int64 is rw) returns int64 is native(LIB) { * } 
sub JSetM(Pointer, Str, int64 is rw, int64 is rw, int64 is rw, int64 is rw) returns int64 is native(LIB) { * } 
sub JErrorTextM(Pointer, int64, Pointer[Str] is rw) returns int64 is native(LIB) { * }

class Inline::J::Noun { ... }
class Inline::J::Verb { ... }

class Inline::J:ver<0.0.1>:auth<zef:elcaro> {
    has $!jt;
    has Bool $!profile-loaded;
    
    submethod BUILD($!jt

JInit

, :$profile=PRO) {
        if not $!profile-loaded {
            self.do("0!:0<'$profile'[BINPATH_z_=:'$binpath'[ARGV_z_=:''");
            $!profile-loaded = True;
        }
        return self
    }



    method datatypes {
        Inline::J::Datatype.enums
    }

    method do(Str() $expr) {
        my $ec = JDo($!jt, $expr);
        if $ec ≠ 0 {
            my $err-text = self.error-text($ec);
            fail(qq:to<END>);
            |$err-text
            |   $expr
            END
        }
        return self
    }

    method getr() {
        return JGetR($!jt).chomp
    }

    method get-locale() {
        return JGetLocale($!jt)
    }

    method eval(|c) {
        return self.do(|c).getr
    }

    method error-text($err) {
        JErrorTextM($!jt, $err, my $p = Pointer[Str].new);
        return $p.deref;
    }

    multi method noun($init, :$name) {
        return Inline::J::Noun.new(:$init, :$name, ij => self);
    }
    multi method noun(:$name) {
        return Inline::J::Noun.new(:$name, ij => self);
    }

    method verb($init, :$name) {
        return Inline::J::Verb.new(:$init, :$name, ij => self);
    }

    method setm(Str $name, Array $a) {
        my int64 ($type, $rank, $shape, $data) = Inline::J::Conversion::setm-values($a);
        my $error = JSetM($!jt, $name, $type, $rank, $shape, $data);
        if $error ≠ 0 {
            fail(self.error-text($error));
        }
        return Inline::J::Noun.new(:$name, ij => self);
    }

    method getm($n, :$raw) {
        my $error = JGetM($!jt, $n, |my int64 ($type, $rank, $shape, $data));
        if $error ≠ 0 {
            fail("{ self.error-text($error) }: Name does not exist");
        }
        return Inline::J::Conversion::getm-data($type, $rank, $shape, $data, :$raw);
    }

    #| Parse the data representation given from `(3!:3), rather than use `JGetM`
    #| This allows the ability to return Raku data structures from J expressions
    #| without first having to define a noun on the J side
    #| NB. libj also offers the `JGetA` routine to return a byte representation
    #| but it also requires that the noun already exists in J.
    method gets($expr, |c) {
        my ($, $type, $tally, $dims, *@data) = self.eval("(3!:3) $expr").lines;
        return Inline::J::Conversion::gets-data($type, $tally, $dims, @data, |c);
    }

    method free() {
        JFree($!jt)
    }

    submethod DESTROY() {
        self.free
    }

}

my sub random-hex(\n) {
    (0..255).roll(n).map(*.fmt('%02x')).join;
}

class Inline::J::Noun {
    has $.name;
    has $!init;
    has Inline::J $!ij;

    submethod BUILD(:$!name, :$!init, :$!ij) {
        $!name ||= 'ijn_' ~ random-hex(4);
        if $!init {
            $!ij.do("$!name =. $!init");
        }
    }

    multi method gist(::?CLASS:D:) {
        $!ij.do($!name).getr;
    }

    method Str {
        $!name
    }

    method !monadic($f) {
        $!ij.eval("$f $!name");
    }

    method datatype {
        Inline::J::Datatype(self!monadic('(3!:0)'))
    }

    method elems() {
        self!monadic('#').Int
    }

    method shape() {
        self!monadic('$').words.map(*.Int)
    }

    method AT-POS(*@n) {
        self!monadic("(<@n[]) \{")
    }

    method getm(|c) {
        $!ij.getm($!name, |c);
    }
    method gets(|c) {
        $!ij.gets($!name, |c);
    }

    method setm(|c) {
        $!ij.setm($!name, |c);
    }

    #| Erases name in J
    submethod DESTROY {
        $!ij.do("(4!:55) <'$!name'")
    }

}

class Inline::J::Verb does Callable {
    has $.name;
    has $!init;
    has Inline::J $!ij;

    submethod BUILD(:$!name, :$!init, :$!ij) {
        $!name ||= 'ijv_' ~ random-hex(4);
        $!ij.do("$!name =: $!init");
        if $!ij.eval("(4!:0) < '$!name'") ≠ 3 {
            die('Not a verb')
        }
    }

    method Str {
        $!name
    }

    multi submethod CALL-ME() {
        $!ij.eval("($!name) ''")
    }
    multi submethod CALL-ME(Inline::J::Noun $y) {
        $!ij.eval("($!name) $y")
    }
    multi submethod CALL-ME(Inline::J::Noun $x, Inline::J::Noun $y) {
        $!ij.eval("$x ($!name) $y")
    }
    multi submethod CALL-ME(Real $y) {
        $!ij.eval("($!name) $y")
    }
    multi submethod CALL-ME(Real $x, Real $y) {
        $!ij.eval("$x ($!name) $y")
    }

    method rank {
        $!ij.eval("$!name b. 0")
    }

    method atop(Inline::J::Verb $f) {
        self.new(init => $!name ~ '@:' ~ $f.name, :$!ij)
    }

    #| minimum args
    method arity { 1 }

    #| maximum args
    method count { 2 }

}

multi infix:<∘>(Inline::J::Verb $f, Inline::J::Verb $g) is export {
    return $f.atop($g)
}


use Term::termios;

my sub brainfuck(Str:D $code) is export {
    check-matching-loop $code;
    my $saved-term;
    try {
        $saved-term = Term::termios.new(:1fd).getattr;
        given Term::termios.new(:1fd).getattr {
            .makeraw;
            .setattr(:DRAIN);
        }
    };
    LEAVE { try $saved-term.setattr(:DRAIN) }

    my @code   = $code.comb: /<[-<\>+.,[\]]>/;
    my int $ꜛ;
    my int $cursor;
    my $stack := Buf[uint8].new: 0;
    loop {
        given @code[$cursor] {
            when '>' { $stack.append: 0 if $stack.elems == ++$ꜛ;       }
            when '<' { $ꜛ--; fail "Negative cell pointer\n" if $ꜛ < 0; }
            when '+' { $stack[$ꜛ]++;               }
            when '-' { $stack[$ꜛ]--;               }
            when '.' { $stack[$ꜛ].chr.print;       }
            when ',' { $stack[$ꜛ] = $*IN.getc.ord; }
            when '[' {
                $cursor++; next if $stack[$ꜛ];
                loop {
                    state $level = 1;
                    $level++ if @code[$cursor] eq '[';
                    $level-- if @code[$cursor] eq ']';
                    last unless $level;
                    $cursor++;
                }
            }
            when ']' {
                unless $stack[$ꜛ] { $cursor++; next }
                loop {
                    state $level = 1;
                    $cursor--;
                    $level-- if @code[$cursor] eq '[';
                    $level++ if @code[$cursor] eq ']';
                    last unless $level;
                }
            }
        }
        last if ++$cursor > @code.elems;
    }
}

my sub check-matching-loop($code) {
    my $level = 0;
    for $code.comb {
        $level++ if $_ eq '[';
        $level-- if $_ eq ']';
        fail qq{Closing "]" found without matching "["\n} if $level < 0;
        LAST { fail 'Unmatched [ ]' if $level > 0 }
    }
}



Inline::Brainfuck - Use Brainfuck language in your Raku programs


=begin code :lang<raku>

use Inline::Brainfuck;

brainfuck '++++++++++ ++++++++++ ++++++++++ +++.'; # prints "!"

=end code


This module provides a subroutine that takes a string with
L<Brainfuck code|https://en.wikipedia.org/wiki/Brainfuck> and executes it.


=begin code :lang<raku>

brainfuck '++++++++++ ++++++++++ ++++++++++ +++.'; # prints "!"

=end code


Takes a C<Str>  with Brainfuck code to execute. Input will be read
from STDIN. The terminal will be switched to non-buffered mode, so any input
will be processed immediatelly, per-character. Output will be sent to STDOUT.


This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.


Brainfuck

The Raku Knowledge Base


=begin React :component<HeaderCol> :id<footer>  
=begin nested :!nested
=item1 B<Language>
    =item2 L<Get started|file:../getting-started/getting-started.podlite>
    =item2 L<Why Raku?|/doc/language/faq#Why-should-I-learn-Raku-What's-so-great-about-it>
    =item2 L<Try Raku|https://glot.io/new/raku>
    =item2 L<Raku cheat sheet|https://github.com/Raku/mu/blob/master/docs/Perl6/Cheatsheet/cheatsheet.txt>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<Raku on Exercism|https://exercism.org/tracks/raku>
    =item2 L<Wikipedia|https://en.wikipedia.org/wiki/Raku_(programming_language)>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=begin nested :!nested

=item1 B<L<Documentation|/doc>>
    =item2 L<Getting started, Migration guides from other languages, & Tutorials | file:../doc/introduction.podlite>
    =item2 L<Language References|file:../doc/reference.podlite>
    =item2 L<Type Reference| file:../doc/types.podlite>
    =item2 L<Miscellaneous| file:../doc/miscellaneous.podlite>
    =item2 L<FAQs (Frequently Asked Questions)|/doc/language/faq>
    =item2 L<Community|/doc/language/community>
    =item2 L<The list of all documents|file:../doc/index.podlite>

=item1 B<Resources>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>

=end nested
=begin nested :!nested

=item1 B<Resoures>
    =item2 L<Download | file:../download/index.podlite>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=item1 B<Learning>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Wikibook |https://en.wikibooks.org/wiki/Raku_Programming>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>
    =item2 L<Learn Raku in Y minutes|https://learnxinyminutes.com/docs/raku/>
    =item2 L<Golfing |https://github.com/AlexDaniel/raku-golf-cheatsheet>
=end nested
=begin nested :!nested

=item1 B<Explore>
    =item2 L<Raku Blog Aggregator|https://planet.raku.org/>
    =item2 L<Rakudo Weekly|https://rakudoweekly.blog/>
    =item2 L<The Weekly Challenge |https://perlweeklychallenge.org/>
    =item2 L<Raku Advent Calendar|https://raku-advent.blog/>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=end React


=begin React :component<CookieConsent> :id<CookieConsent> :buttonCaption("Got it!")
=para
This website uses cookies for analytics.
=end React


README

NAME

SYNOPSIS

DESCRIPTION

EXPORTED SUBROUTINES

brainfuck

AUTHOR

COPYRIGHT AND LICENSE

Inline::Brainfuck v1.1

Authors

License

Dependencies

Test Dependencies

Provides

Documentation