Mruby
{{Short description|Lightweight Ruby language implementation}}
{{lowercase title}}
{{Infobox Software
| name = mruby
| logo = Mruby logo red.svg
| logo size = 200px
| developer = Yukihiro Matsumoto et al.
| operating system = Cross-platform
| latest release version = {{wikidata|property|preferred|references|edit|P348|P548=Q2804309}} | latest release date = {{Start date and age|{{wikidata|qualifier|preferred|single|P348|P548=Q2804309|P577}}|df=yes}}
| programming language = C and Ruby
| genre = Ruby programming language interpreter
| license = MIT License{{cite web |title=LICENSE |url=https://github.com/mruby/mruby/blob/master/LICENSE |website=Github |accessdate=6 September 2019}}
| website = {{official URL}}
| released = {{Start date and age|2012|04|20}}
| standard = ISO/IEC 30170:2012
}}
mruby is an interpreter for the Ruby programming language with the intention of being lightweight and easily embeddable.{{cite web | url = https://github.com/mruby/mruby | title = mruby/mruby | accessdate = 2018-04-30 | publisher = GitHub}}[http://matt.aimonetti.net/posts/2012/04/20/mruby-and-mobiruby/ mruby and MobiRuby announced] The project is headed by Yukihiro Matsumoto, with over 100 contributors currently working on the project.
Features
mruby 1.0 supports the Ruby 2.1 core API, but none of the standard library. As well as being able to execute most basic Ruby code, mruby also features a bytecode compiler and virtual machine, as well as the ability to be easily embedded and integrated into C or C++ code, in a similar manner to Lua or Tcl.
mruby 2.0.0{{Cite web|url=http://mruby.org/releases/2018/12/11/mruby-2.0.0-released.html|title=mruby 2.0.0 released|website=mruby.org|access-date=2019-04-01}} adds support for several Ruby 2.x methods beyond Ruby 2.1. v2.0.0 also changed to variable length bytecode instructions format.
mruby bytecode can be embedded in C code, and thus, can be compiled into a standalone executable.{{Cite web|url=http://mruby.org/docs/articles/executing-ruby-code-with-mruby.html|title=Executing Ruby code with mruby|website=mruby.org|access-date=2019-04-01}}
mruby also aims to be compliant with the ISO/IEC 30170:2012 standard.{{Cite web|url=http://www.iso.org/cms/render/live/en/sites/isoorg/contents/data/standard/05/95/59579.html|title=ISO/IEC 30170:2012|website=ISO|language=en|access-date=2019-04-01}}
Examples
=Calling mruby from C=
- include
- include
- include
int main(void) {
mrb_state *mrb = mrb_open();
char code[] = "5.times { puts 'mruby is awesome!' }";
printf("Executing Ruby code with mruby:\n");
mrb_load_string(mrb, code);
mrb_close(mrb);
return 0;
}
Assuming that the mruby library and headers are installed, the program can be compiled and executed by running the following commands from the terminal:{{cite web | url = http://matt.aimonetti.net/posts/2012/04/25/getting-started-with-mruby/ | title = Getting started with mruby | accessdate = 2013-12-29 | last = Aimonetti | first = Matt | date = 2012-04-25}}
$ cc example.c -lmruby -lm -o example
$ ./example
=Precompiled Bytecode=
mruby includes a minimalistic virtual machine used to execute mruby bytecode, nicknamed RiteVM:
$ mrbc test.rb
$ mruby -b test.mrb
The first command compiles Ruby code to mruby bytecode, creating a file called "test.mrb", which can then be executed by appending the "-b" flag to the normal interpreter arguments.{{cite web | url = https://geekmonkey.org/an-introduction-to-mini-ruby/ | title = An introduction to Mini Ruby | accessdate = 2013-12-29 | author = geekmonkey | date = 2012-10-30}}
References
{{reflist}}
{{Ruby programming language}}
Category:Interpreters (computing)