Re: [Yaml-core] Considering writing a pure PHP YAML implementation - any tips?

[why t. l. s. <yam...@wh...>]

Simon Willison (si...@in...) wrote:
> 
> It would seem that there's a PHP module-based implementation on the way
> in the form of Syck. However, as a huge number of PHP users are on a
> shared hosting account with no capability to modify their installation I
> think a "pure" PHP implementation would be a very useful thing to have.
> 

One quick note about that:  I will be providing shared libraries for
PHP users.

  <? dl( 'syck.so' ); ?>

So I think Ingy's comment about allowing swappable parsers can also be
phrased:

  <? @dl( 'syck.so' );
     if ( extension_loaded( 'syck' ) ) {
       SimonsYaml::set_load_function( 'syck_load' );
     } else {
       SimonsYaml::set_load_function( 'simons_yaml_load' );
     }
  ?>

> 3. Is there any reason a PHP implementation hasn't been tried yet? Am I
> likely to fall in to any gaping holes?

Interoperability will be tougher, but not horrible.  I would use the
testing suite as your guide as you build.  It will drive you to adhere
to as much of the spec as you can.

http://wiki.yaml.org/yamlwiki/YamlTestingSuite

Cool news.  Good to hear.

_why