Ruby Lex Specification

ruby-talk
1

Hi,

Where can i find a ruby (1.8.6) syntax specification? If that
specification means a file in the source, no problem for me.

Thanks,
Vasco Andrade e Silva

···

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2

parse.y is your source. (http://svn.ruby-lang.org/repos/ruby/trunk/parse.y\)

There is no official Ruby spec (yet), but it is slowly being worked on.

Jason

···

On 10/30/07, Vasco Andrade e Silva <vascoas@gmail.com> wrote:

Hi,

Where can i find a ruby (1.8.6) syntax specification? If that
specification means a file in the source, no problem for me.

Thanks,
Vasco Andrade e Silva
--
Posted via http://www.ruby-forum.com/\.

3

Thanks Jason.

Correct me if i'm wrong but doesn't yacc (or the parser) need something
before it (like lex or a tokenizer) to 'tokenize' the text?

I can identify the tokens in parse.y but i was looking for a
"specification" for them. Example: if i see "class" probably i want to
create the token kCLASS, but i wanted to be sure..

Vasco Andrade e Silva

···

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Posted via http://www.ruby-forum.com/.

4

Waou!!

I am currently writing a parser for a simple command line. (chose to
use lemon instead of bison). I had a look at the file you mentioned.
This is impressive. Expressivity and freedom for the programmer means
hard work for the developer (syntax for lisp is really smaller).
Thanks Matz for choosing expressivity.

Gaspard

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2007/10/30, Jason Roelofs <jameskilton@gmail.com>:

parse.y is your source. (http://svn.ruby-lang.org/repos/ruby/trunk/parse.y\)

There is no official Ruby spec (yet), but it is slowly being worked on.

Jason

On 10/30/07, Vasco Andrade e Silva <vascoas@gmail.com> wrote:
>
> Hi,
>
> Where can i find a ruby (1.8.6) syntax specification? If that
> specification means a file in the source, no problem for me.
>
> Thanks,
> Vasco Andrade e Silva
> --
> Posted via http://www.ruby-forum.com/\.
>
>

5

Then this is this file you wanted:
http://svn.ruby-lang.org/repos/ruby/trunk/keywords

···

On 10/30/07, Vasco Andrade e Silva <vascoas@gmail.com> wrote:

Thanks Jason.

Correct me if i'm wrong but doesn't yacc (or the parser) need something
before it (like lex or a tokenizer) to 'tokenize' the text?

I can identify the tokens in parse.y but i was looking for a
"specification" for them. Example: if i see "class" probably i want to
create the token kCLASS, but i wanted to be sure..

Vasco Andrade e Silva
--
Posted via http://www.ruby-forum.com/\.

6

Cédric Finance wrote:

Then this is this file you wanted:
http://svn.ruby-lang.org/repos/ruby/trunk/keywords

Thanks a lot.

(What a mess between the parser, keywords... :P)

···

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Posted via http://www.ruby-forum.com/\.

7

there were also ANTLR grammars

http://redhanded.hobix.com/cult/parseYRemakes.html

···

On Oct 30, 7:34 pm, Vasco Andrade e Silva <vasc...@gmail.com> wrote:

Cédric Finance wrote:
> Then this is this file you wanted:
>http://svn.ruby-lang.org/repos/ruby/trunk/keywords

Thanks a lot.

(What a mess between the parser, keywords... :P)
--
Posted viahttp://www.ruby-forum.com/.