Re: [sv-bc] Expression size while processing 'inside' construct

Shalom,

Does the section you quoted even make sense in light of the sentence in the section on unpacking:

However, if more bits are needed than are provided by the source expression,
an error shall be generated.

If the rhs is a streaming concat, and if the streaming concat is "cast" to the lhs type, then the post-cast rhs can't have fewer bits than the lhs. And if the rhs is not a streaming concat, then presumably it would be extended to the lhs width according to the normal rules.

Paul
----- Original Message -----
From: "Shalom Bresticker" <shalom.bresticker@intel.com>
To: "Paul Graham" <pgraham@oasys-ds.com>, "sv-bc" <sv-bc@eda.org>
Sent: Sunday, August 1, 2010 5:57:03 AM
Subject: RE: [sv-bc] Expression size while processing 'inside' construct

Hi,

I would add that other parts of the text, such as

"If the target is a data object of bit-stream type, the stream created by the source streaming_concatenation shall be implicitly cast to the type of the target. If this target represents a fixed-size variable and the stream is larger than the variable, an error will be generated. If the target variable is larger than the stream, the stream is left-aligned and zero-filled on the right,"

are relevant only if the streaming concatenation is not automatically resized according to context-determined expression rules.

Shalom ---------------------------------------------------------------------
Intel Israel (74) Limited

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