Re: [sv-bc] Aggregate expressions

The text in question was added as part of Mantis item 168, page 14.

Neil



Bresticker, Shalom wrote:
> I also don't think the term 'aggregate expression' is well defined.
>  
> I also don't think the first sentence makes sense:
> "Unpacked structure and array data objects, as well as unpacked 
> structure and array constructors, can all be used as aggregate expressions."
> 
> What is meant by "unpacked structure and array constructors," which are 
> different from data objects?
>  
> The version of this sentence in SV 3.1a is,
> 
> "Unpacked structure and array variables, literals, and expressions can 
> all be used as aggregate expressions."
> 
> So "literals and expressions" are contrasted to "variables". In 1800, we 
> still have structure and array "literals". But what are called structure 
> and array "expressions" in 3.1a, are now called "assignment patterns". 
> Since structure and array literals are a form of assignment patterns, I 
> think "constructors" in the sentence should be replaced with "assignment 
> patterns".
>  
> Shalom
> 
>     ------------------------------------------------------------------------
> 
>      *From:* owner-sv-bc@server.eda.org
>     [mailto:owner-sv-bc@server.eda.org] *On Behalf Of *Bresticker, Shalom
>     *Sent:* Thursday, February 28, 2008 11:47 AM
>     *To:* danielm; sv-bc
>     *Subject:* RE: [sv-bc] Aggregate expressions
> 
>     I don't think this paragraph was intended to be a complete list.
>      
>     Shalom
> 
>         ------------------------------------------------------------------------
>         *From:* owner-sv-bc@server.eda.org
>         [mailto:owner-sv-bc@server.eda.org] *On Behalf Of *danielm
>         *Sent:* Thursday, February 28, 2008 11:40 AM
>         *To:* 'sv-bc'
>         *Subject:* [sv-bc] Aggregate expressions
> 
>         1800-2005 states :
>         Unpacked structure and array data objects, as well as unpacked
>         structure and array constructors, can all be used as aggregate
>         expressions. A multi-element slice of an unpacked array can also
>         be used as an aggregate expression.
>         Aggregate expressions can be copied in an assignment, through a
>         port, or as an argument to a task or function.
>         Aggregate expressions can also be compared with equality or
>         inequality operators. To be copied or compared, the type of an
>         aggregate expression must be equivalent. See 6.9.2.
>         IMHO there is more expression when aggregate expression are
>         sensible i.e: conditional operator (?:), function return value.
>         Maybe there are more?
>          
>         Will 1800-2005 add some operators to this description?
>          
>         DANiel
> 
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