tree 5d4c8403e7b8cc4e6e6a68cf6380ab5d1bc78406
parent 96a49bac7ec0e7c194bf69c5026df8a0c70071b5
author Yigit Boyar <yboyar@google.com> 1486022916 -0800
committer Yigit Boyar <yboyar@google.com> 1499383333 -0700

Introduce forked context

This CL introduces forkable context which allows having scoped
changes in the processer.
A Context now can be forked per element and all ignored annotations
are parsed during the fork which automatically scopes them.
Each processor has to fork the context, and if they don't, they
won't have scoped changes but they won't be able to mess up
with parent's context since it is immutable.

I've changed each processor to be 1 time use so that they can be
scoped to their element. This means they receive all parameters
in the constructor (rather than receiving the element in the
process method). This churns more memory but who cares, it is JVM.

This new scope allows us to get rid of report errors methods in
column adapters because they can freely report their warnings
and filtering happens on the logger side.

I'm hoping that implementing TypeConverters on top of this will be
more straightforward but saving it for another CL.

Bug: 32342709
Test: all existing tests pass after api modifications
Change-Id: Ie6b6a6dd83149c561465905faf5438e006440460