Re: [Boost-build] CVS: boost/tools/build/new property.jam,1.31,1.32

From: Vladimir Prus (ghost_at_[hidden])
Date: 2003-05-07 02:31:12

David Abrahams wrote:

> Modified Files:
> property.jam
> Log Message:
> improve error reporting

> + # need to do this here to get reasonable error messages for
> + # unrecognized implicit features.
> + validate $(p) ;
> +

A small design note. Ultimately, it's better to avoid calls to "validate" at 
all. All properties should be represented as instances of property-set class 
and validation will happen only when such an instances is created from user 
input. E.g. a new rule property-set.create-with-validation can be introduced.

After that, property-set instances is guaranteed to have only valid properties 
and all operations with it will leave it valid -- thus, "validate" must be 
called only in few places. 

What do you think?

- Volodya