Ypaste is up and running!

We have set up dev.yaml.org as a server for working on YAML development.
The first active feature is ypaste, available in
http://dev.yaml.org/ypaste/

Ypaste demonstrates the parsing done by the YamlReference parser. This
is a Haskell parser which uses exactly the spec productions (actually,
it uses an updated set of productions, implementing JSON compatibility,
some minor tweaks to document boundary handling, and bug fixes I
discovered when I actually fed the productions into it).

You can enter any YAML text, or upload a YAML file (there's a 16k
limit).

You will then see a two-panel view, the left is the syntax tree.
Clicking on a syntax tree node highlights the text it matches; clicking
on the text highlights the matching (leaf) syntax tree node.

You can save the YAML and the result; this will give you a unique number
and will allow anyone to see it using a URL like
http://dev.yaml.org/ypaste/<the-number> - or you can use the navigation
buttons on http://dev.yaml.org/ypaste/ to access a stored result by
number.

Use this to:

- Explore the spec ("What does the spec say about parsing
<something>?"). You probably wouldn't want/need to save the results in
this case.

- Report a bug in the productions ("The productions handle <something>
the wrong way."). You definitely want to save the results in this case,
and post a message in this list so I can address the problem.

- Request a change in the spec ("The spec (and productions) say that
<something> is parsed in a way that makes no sense"). Again you would
want to save the results in this case, and post a message to this list
to start a discussion about the proposed change.

Known issues:

- If there is a parse error in the text, the result only contains the
text up to the error point, followed by a (red) syntax error message
(which usually isn't that informative). It would be nice if, at the very
least, the error was followed by the rest of the input, so we'd be able
to see what triggered it. In the meanwhile, you can see the full input
text by viewing the YAML navigation button.

- No effort has been made to make this all look "pretty". It is just
bare-bones functionality.

Have fun!

	Oren Ben-Kiki



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