[e-lang] A solution for overriding __getAllegedType
Mark S. Miller
markm at cs.jhu.edu
Mon May 22 01:21:48 EDT 2006
Kevin Reid wrote:
> It is sometimes difficult to override __getAllegedType/0
> appropriately because there is no way to get the original value in
> order to compute a variation of it.
>
> To fix this, I have added ObjectExpr#asTypeDesc/0 to E-on-CL, and I
> propose that the same be done for E-on-Java.
>
> That is, the Miranda method is this, except in the presence of matchers:
>
> to __getAllegedType() :any {
> return meta.context().getSource().asTypeDesc()
> }
>
> For ObjectExprs with fully-qualified names, no matchers, and no
> explicit __getAllegedType/0 method, this is true:
>
> ? objectExpr.asTypeDesc() == objectExpr.eval
> (scope).__getAllegedType()
> # value: true
I like it. But what should we do about matchers?
--
Text by me above is hereby placed in the public domain
Cheers,
--MarkM
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