Parser: Stabby Lambda

[johnnyt]

MRI 1.9.3

ruby -e 'p ->{ }'
#<Proc:0x007f9edb10d520@-e:1 (lambda)>

MagLev

maglev-ruby -e 'p ->{ }'
-e:3, syntax error, unexpected '>'
ERROR 2702 , a RubyParseError occurred (error 2702), WARNING, line 3: ambiguous first argument; put parentheses or even spaces
-e:3: syntax error, unexpected '>'
unexpected EOF at line 6 (RubyParseError)
topaz 1> exit

[zenspider]

I believe I have this fixed in my branch. Double checking...

[zenspider]

I have it finished on the parser side but have a bug in the lexer that I was unable to resolve at the time.

[zenspider]

Yeah. Hitting the same problem I hit before. I'm adding:

  ps->paren_nest = 0;
  ps->lpar_beg = 0;

to the rb_parse_state and it causes segfaults left and right. I'm not sure why adding 2 ints to the struct will create such havoc.... but I suspect something hinky is going on. I have yet to attach with a debugger to poke deeper.

@AllenOtis any hints?

[AllenOtis]

I need to see a diff of what you changed. Note that C++ classes
YyStackElement
and YyStackData can't be changed without also recompiling the server with
the same changes (see comments about "must agree ... with om.hf" ).

On Tue, Jul 21, 2015 at 4:29 PM, Ryan Davis [email protected]
wrote:

Yeah. Hitting the same problem I hit before. I'm adding:

ps->paren_nest = 0;
ps->lpar_beg = 0;

to the rb_parse_state and it causes segfaults left and right. I'm not
sure why adding 2 ints to the struct will create such havoc.... but I
suspect something hinky is going on. I have yet to attach with a debugger
to poke deeper.

@AllenOtis https://github.com/AllenOtis any hints?

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[johnnyt]

Hey @zenspider - do you have the branch/code available for us to look at?