Adding class initializers with camlp4

Adding class initializers with camlp4

[Joel Reymont]

Does anyone have examples of how to add initializer code to a class  
via camlp4?

It's not clear to me how one can extend the list of existing  
initializers, for example. There may be some or there may be none.  
Same thing with fields.

	Thanks, Joel

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http://wagerlabs.com

Re: [Caml-list] Adding class initializers with camlp4

[Nicolas Pouillard]

Excerpts from joelr1's message of Tue Oct 09 12:56:14 +0200 2007:
> Does anyone have examples of how to add initializer code to a class  
> via camlp4?

An  object  initializer  is a `class structure item' that can be created using
this quotation: <:class_str_item< initializer $e$ >> these initializers can be
used in a object structure in an expression or class
<:expr< object $class_str_item$ end >>.

> It's not clear to me how one can extend the list of existing  
> initializers, for example. There may be some or there may be none.  
> Same thing with fields.

The  list  is not explicit, however you can easily extend them on the front or
the back.

<:class_expr< object ($p$) $cstr$ end >> ->
  <:class_expr< object ($p$) initializer $e1$; $cst$; initializer $e2$ >>

HTH,

-- 
Nicolas Pouillard aka Ertai