tree 97397f676755e70ca8e9a133faa115b2f0afcde6
parent 75c938b6ed6b97a2b7a695a37ba6af160c3289fb
author Colin Cross <ccross@android.com> 1445994915 -0700
committer Colin Cross <ccross@android.com> 1446347398 -0700

Add helpers for extending properties to proptools

It is common for a mutator to append or prepend property structs
together.  Add helper functions to append or prepend properties in property
structs.  The append operation is defined as appending string and slices
of strings normally, OR-ing bool values, and recursing into embedded
structs, pointers to structs, and interfaces containing pointers to
structs.  Appending or prepending the zero value of a property will
always be a no-op.