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https://github.com/cesquivias/mumbler

My experimental programming language using Truffle
https://github.com/cesquivias/mumbler

graalvm lisp-interpreter truffle

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My experimental programming language using Truffle

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README 

        
Mumbler is a lisp programming language I wrote to try out the [[https://www.graalvm.org/][Graal JIT]] for the JVM.



* Mumbler

Mumbler is a very small lisp modeled after Scheme but with far fewer special forms and built-in functions. Here is the "[[http://cesquivias.github.io/blog/2014/10/13/writing-a-language-in-truffle-part-1-a-simple-slow-interpreter/#mumbler-language][Mumbler language specification]]".



* Build

Mumbler uses [[http://gradle.org/][Gradle]] as the build system. To build the code simply run



#+begin_src shell-script

    cd ${MUMBLER_REPO}/lang

    ./gradlew installDist

#+end_src



* Run

Mumbler requires a special version of the JVM. You can download a [[https://www.graalvm.org/downloads/][graal JVM]] from Oracle. Mumbler requires version 19.3 or newer.



You can start Mumbler's REPL from the build directory. Just set ~JAVA_HOME~ to point to the Graal JVM.



#+begin_src shell-script

    JAVA_HOME= ${MUMBLER_REPO}/lang/build/install/mumbler/bin/mumbler

#+end_src



** Run tests

The test/ directory contains several Mumbler scripts that try out different features. To run all the tests:



#+begin_src shell-script

    ${MUMBLER_REPO}/test/run_tests

#+end_src



You can try out individual scripts by starting running Mumbler directly.



#+begin_src shell-script

  ${MUMBLER_REPO}/lang/build/install/mumbler/bin/mumbler ${MUMBLER_REPO}/test/.mumbler

#+end_src



You can disable tail call optimization.



#+begin_src shell-script

  ${MUMBLER_REPO}/lang/build/install/mumbler/bin/mumbler --tco=false ${MUMBLER_REPO}/test/.mumbler

#+end_src



You can also run individual scripts using gradle.



#+begin_src shell-script

    cd ${MUMBLER_REPO}/lang

    ./gradlew run -PappArgs="['/home/jchaloup/development/mumbler/benchmark/fibonacci/fibonacci.mumbler']"

    ./gradlew run -PappArgs="['/home/jchaloup/development/mumbler/benchmark/fibonacci/fibonacci.mumbler', '--tco=false']"

#+end_src



** Run benchmarks

[[sec:build][Build]] Truffle and Mumbler and [[sec:env-var][set environment variables]].



#+begin_src shell-script

    ${MUMBLER_REPO}/benchmark/measure 

#+end_src



~benchmark-name~ is the name of the files in one of the directories under ~benchmark~, without the extension, as in the following example.



#+begin_src shell-script

    ${MUMBLER_REPO}/benchmark/measure ${MUMBLER_REPO}/benchmark/fibonacci/fibonacci

#+end_src



You can uncomment the benchmark execution commands at the end of the ~measure~ script in order to benchmark mumbler against other languages than python.



** Set Environment Variables

Mumbler's scripts use two environment variables.



#+begin_example

    JAVA_HOME : The directory of the Graal VM. Mumbler may run using the default Oracle or OpenJDK JVM, but you won't see the performance gains that Graal provides.

    MUMBLER_HOME : The path where gradle built and installed Mumbler. It should be under ${MUMBLER_REPO}/lang/build/install/mumbler

#+end_example



The ~MUMBLER_REPO~ environment variable referenced here is not used by an scripts. It signifies where the Mumbler repo was cloned on your system.



* License



Copyright © 2014-2020 Cristian Esquivias



This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 3 of the License, or

(at your option) any later version.



This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.



You should have received a copy of the GNU General Public License

along with this program.  If not, see .