Remove PhaseInput and add TransformerSorter to barback.

Aggregate transformers aren't yet supported, but this introduces the
large-scale structure necessary to support them.

R=rnystrom@google.com
BUG=18567

Review URL: https://codereview.chromium.org//260833006

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@35676 260f80e4-7a28-3924-810f-c04153c831b5
5 files changed
tree: 9edb44782a8c8c689244ed34608f817687ca6aec
  1. example/
  2. lib/
  3. test/
  4. CHANGELOG.md
  5. LICENSE
  6. pubspec.yaml
  7. README.md
README.md

Barback is an asset build system. It is the library underlying pub's asset transformers in pub build and pub serve.

Given a set of input files and a set of transformations (think compilers, preprocessors and the like), it will automatically apply the appropriate transforms and generate output files. When inputs are modified, it automatically runs the transforms that are affected.

To learn more, see here.