5 ms·

I'm a little confused by this. Did someone manage to write a YARV to WASM compiler? I kind of doubt this is a wholly new Ruby to WASM compiler, so my best guess

I'm a little confused by this. Did someone manage to write a YARV to WASM compiler? I kind of doubt this is a wholly new Ruby to WASM compiler, so my best guess would be a YARV to WASM compiler. Except...even that would be tricky since Ruby has a notoriously complicated runtime. Just looking at this though, it looks like they just compiled an existing Ruby implementation to WASM via Emscripten. But that's not really compiling Ruby to WASM then...

XMPPwocky 8y ago
I think this is a Python v.s. CPython sort of confusion- you can run Python code in CPython which can compile to wasm, but you can't directly compile Python source to wasm in a nontrivial way (i.e. just shipping CPython with your source in a single wasm binary doesn't count, sorry, yes I know you heard about the futamura projections yesterday but this isn't actually very interesting)
deleted 8y ago
[deleted]
mcpherrinm 8y ago
Yeah, look like it is compiling Ruby (the interpreter, aka MRI or CRuby), not programs written in the language Ruby.
- paradoxparalax 8y ago
  So , the maximum you can get from it is the console log text return of the script you paste there. right? Or you can glue your script with anything like webgl or canvas there to do anything?
  - thefounder 8y ago
    WASM doesn't provide DOM access so you can't use anything useful on the web unless you callback through a bunch of JS.
    - paradoxparalax 8y ago
      I see thank you very much :) cheers
    - ericb 8y ago
      I imagine that is some sort of intentional sandboxing? I didn't know about that and find myself surprised. In principal I'm not sure why it wouldn't be able to provide direct DOM access. I'd love to hear more background on this if you know it.
      - markdog12 8y ago
        It's coming: https://github.com/WebAssembly/host-bindings/blob/master/proposals/host-bindings/Overview.md https://github.com/WebAssembly/host-bindings/blob/master/pro...
- singularity2001 8y ago
  afair also mruby compiles to wasm almost out of the box: https://github.com/noontage/test-mruby-wasm https://github.com/noontage/test-mruby-wasm
chrisseaton 8y ago
It's 'compiling Ruby' as in 'compiling the program called Ruby', not 'compiling programs written in the Ruby language'.

XMPPwocky 8y ago

I think this is a Python v.s. CPython sort of confusion- you can run Python code in CPython which can compile to wasm, but you can't directly compile Python source to wasm in a nontrivial way (i.e. just shipping CPython with your source in a single wasm binary doesn't count, sorry, yes I know you heard about the futamura projections yesterday but this isn't actually very interesting)

deleted 8y ago

[deleted]

mcpherrinm 8y ago

Yeah, look like it is compiling Ruby (the interpreter, aka MRI or CRuby), not programs written in the language Ruby.

paradoxparalax 8y ago
So , the maximum you can get from it is the console log text return of the script you paste there. right? Or you can glue your script with anything like webgl or canvas there to do anything?
- thefounder 8y ago
  WASM doesn't provide DOM access so you can't use anything useful on the web unless you callback through a bunch of JS.
  - paradoxparalax 8y ago
    I see thank you very much :) cheers
  - ericb 8y ago
    I imagine that is some sort of intentional sandboxing? I didn't know about that and find myself surprised. In principal I'm not sure why it wouldn't be able to provide direct DOM access. I'd love to hear more background on this if you know it.
    - markdog12 8y ago
      It's coming: https://github.com/WebAssembly/host-bindings/blob/master/proposals/host-bindings/Overview.md https://github.com/WebAssembly/host-bindings/blob/master/pro...
singularity2001 8y ago
afair also mruby compiles to wasm almost out of the box: https://github.com/noontage/test-mruby-wasm https://github.com/noontage/test-mruby-wasm

chrisseaton 8y ago

It's 'compiling Ruby' as in 'compiling the program called Ruby', not 'compiling programs written in the Ruby language'.