tree 7d2651f3f04bd4c6268fe9b7d8ac426ca81a79ef
parent f6cbde02c6586a6fe0046bfc3f238e8622ad5fa6
author Todd Wang <toddw@google.com> 1461303982 -0700
committer Todd Wang <toddw@google.com> 1461303982 -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: 4/5
Change-Id: Ib51afdb2212bdff36ae192d3226ff2ec1892c325