zef VS MoarVM

To begin, you'll want to make sure that you have Raku installed, I recommend using Rakubrew. Then we'll want to install Zef, if you're new to Raku, Zef is basically just NPM or CPAN for Raku, it's written by the fabulous Ugexe and is the default package manager people use with Raku. If you installed Raku with Rakubrew, you can simply run rakubrew build-zef and it will handle all of the configuration for you.

I tested it on my computer. I needed to install zef from here. I installed libraries needed to use rakudo_debug. Here hat I get below:

See: https://github.com/ugexe/zef/blob/9779091b7997468257ce3037f8bc0e9c65d1f974/t/repository.rakutest#L85-L128 for an example of how the tiering of ecosystems work, and https://github.com/ugexe/zef/commit/a12d286312c6d7bc3c8ffebe51cce4caae6268cf for some reasoning

I have Rakudo 2022.07 on my Mac. I cloned https://github.com/ugexe/zef, which got me version 0.14.4. I cd'ed into the clone and ran this:

zef -v install https://github.com/ugexe/zef.git

FROM ghcr.io/jj/raku-gha ENV PKGS="git tar" PKGS_TMP="make gcc linux-headers musl-dev" WORKDIR="/home/raku" LABEL version="1.0.3" maintainer="[email protected]" rakuversion=$VER USER root RUN apk update && apk upgrade && apk add --no-cache $PKGS $PKGS_TMP USER raku # Environment ENV PATH="${WORKDIR}/.raku/bin:${WORKDIR}/.raku/share/perl6/site/bin:${PATH}" \ ENV="${WORKDIR}/.profile"\ RAKULIB="inst#/home/raku/.raku" # Basic setup, programs and init WORKDIR $WORKDIR RUN git clone --depth 1 https://github.com/ugexe/zef.git \ && cd zef && raku -I. bin/zef install . \ && zef install Linenoise \ && cd .. && rm -rf zef USER root RUN apk del $PGKS_TMP USER raku ENTRYPOINT ["raku"]

This is the issue I found on GitHub.

Implement return prioritization #1786: superseeded

Now, as to how that's done at the low level, and whether the way it's done is a good way to do it, well, I can't help. Suffice to say, the main place to look for how this is handled at the low-level is MoarVM. I dug around for a couple minutes and have a link to a commit from nearly a decade ago. Does that help?

For a class the default representation is P6Opaque. This is one of a few dozen stock representations that Raku requires compiler backends implement as standard. See, for example, the 46 .c/.h pairs of C89 source files in the relevant MoarVM directory. A quick glance at the names of the source code files should paint a broad picture. A look at their code will fill in some details.

I'm hoping someone who knows C89 can take a quick gander at the C89 code implementing 47 representations in here and comment on it.

This is (yet another) very un(der)documented Raku feature (over a decade after it was introduced!), but one can browse what looks to me like reasonably clean and commented C89 code implementing 47 representations in the relevant MoarVM directory.

FROM alpine:latest as base ARG RAKU_RELEASE=2021.12 ENV PKGS="git make gcc musl-dev perl linux-headers bash" RUN apk update && apk upgrade \ && apk add --no-cache $PKGS \ && git clone --depth 1 --branch ${RAKU_RELEASE} https://github.com/MoarVM/MoarVM.git \ && cd MoarVM \ && perl Configure.pl --prefix /usr \ && make --print-data-base \ && make install\ && cd .. \ && git clone --depth 1 --branch ${RAKU_RELEASE} git://github.com/Raku/nqp.git \ && cd nqp \ && perl Configure.pl --backends=moar --prefix /usr \ && make install \ && cd .. \ && git clone --depth 1 --branch ${RAKU_RELEASE} https://github.com/rakudo/rakudo.git \ && cd rakudo \ && perl Configure.pl --backends=moar --prefix /usr \ && make install \ && ls /usr/share/nqp/ FROM alpine:latest ARG UID=1000 LABEL version="0.5.0" maintainer="[email protected]" raku_release=${RAKU_RELEASE} raku_user_uid=${UID} COPY --from=base /usr/lib/libmoar.so /usr/lib COPY --from=base /usr/share/nqp/ /usr/share/nqp COPY --from=base /usr/share/perl6/ /usr/share/perl6 COPY --from=base /usr/bin/moar /usr/bin/nqp /usr/bin/raku /usr/bin/perl6 /usr/bin/rakudo /usr/bin/ RUN mkdir /github \ && addgroup -S raku && adduser -S raku -G raku --uid ${UID} USER raku WORKDIR /home/raku ENTRYPOINT ["raku"]

Visit the MoarVM project's home page and/or its github repo.

MoarVM's representation is very cool https://github.com/MoarVM/MoarVM/blob/master/docs/strings.asciidoc