tree 40f8279574775a8f75d522031d1492ad7d3d7b38
parent 7d74626e0f7ce754ee65d78009bfefb641ee70d6
author Todd Wang <toddw@google.com> 1461316300 -0700
committer Todd Wang <toddw@google.com> 1461316300 -0700

Add VDLIsZero, and use it in VDLWrite.

This CL adds the VDLIsZero method, which is used to check whether
the method receiver is the VDL zero value.  This is used in
codegen to make zero struct field checking both simpler and faster.

Also simplified both VDLRead and VDLWrite codegen, to make things
more consistent and easier to understand.

MultiPart: 5/5
Change-Id: I5be710fe0dbdba2eccea626e58f17e48c8dcd726