Preserve laziness in declaring transformers.

Preserve laziness in declaring transformers.

R=rnystrom@google.com
BUG=16442
Committed: https://code.google.com/p/dart/source/detail?r=34945

[Bob Nystrom, 2014-04-10 20:45:34]

One nit then LGTM.

https://codereview.chromium.org/231603005/diff/1/pkg/barback/lib/src/transfor...
File pkg/barback/lib/src/transform_node.dart (right):

https://codereview.chromium.org/231603005/diff/1/pkg/barback/lib/src/transfor...
pkg/barback/lib/src/transform_node.dart:122: (transformer is
DeclaringTransformer && primary.isLazy) {
Laziness propagates downwards from previous lazy transformers?

If so, this should be documented at _isLazy's declaration.

https://codereview.chromium.org/231603005/diff/1/pkg/barback/test/package_gra...
File pkg/barback/test/package_graph/lazy_transformer_test.dart (right):

https://codereview.chromium.org/231603005/diff/1/pkg/barback/test/package_gra...
pkg/barback/test/package_graph/lazy_transformer_test.dart:137: });
Very cool.

[nweiz, 2014-04-10 20:54:52]

https://codereview.chromium.org/231603005/diff/1/pkg/barback/lib/src/transfor...
File pkg/barback/lib/src/transform_node.dart (right):

https://codereview.chromium.org/231603005/diff/1/pkg/barback/lib/src/transfor...
pkg/barback/lib/src/transform_node.dart:122: (transformer is
DeclaringTransformer && primary.isLazy) {
On 2014/04/10 20:45:34, Bob Nystrom wrote:
> Laziness propagates downwards from previous lazy transformers?
> 
> If so, this should be documented at _isLazy's declaration.

Done.

[nweiz, 2014-04-10 20:57:54]

Committed patchset #2 manually as r34945 (presubmit successful).