Gary McCullough wrote:
> OK, here's my idea NAnt world:
My thoughts on these...
> Scopable properties
> Parameter variables
I'm all over the idea of parameters, it would render utility targets
that are currently property driven much safer, and largely
self-documenting as well - especially if done the xslt way, where a
target would define its parameters with default values.
How would you access these parameters, though? Probably simplest is to
use the existing syntax of ${param.name}... the parameter value would
then take precedence over the property value. That would provide a
reasonably clean and consistent access method, but there's still the
issue of a parameter obscuring an existing property - how do you get to
the value of the property instead of the parameter? One way to solve
this is through functions, property::get-value vs parameter::get-value.
> Return values
IMHO, if a target or a task has a return value, then it should be a
function.
Alternatively, for those applications where functions just don't cut it
(multiple return values, in particular), then the parameter idea could
be extended to be write-back:
Call target 'foo' with a single input parameter, and two output
parameters:
<call target="foo">
<with-param name="pram" value="bulator" />
<with-param name="out1" property="foo.out1" />
<with-param name="out2" property="foo.out2" />
</call>
After calling the target, the specified properties will be written back
with the final value of their corresponding parameter in the called
target.
> It seems to me all 3 extensions could be introduced without
> introducing breaking changes. Except for implicitly scoping
> property declarations.
> Might want to think carefully about that one.
My suggestion, ditch scoped properties and there are no breaking changes
:-)
Is there anything in particular that you can do with scoped properties
that you can't do with scoped parameters?
-T
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