Handle cascade in type checker.

Handle cascade in type checker.

BUG=http://dartbug.com/17803
R=karlklose@google.com

Committed: https://code.google.com/p/dart/source/detail?r=34585

[karlklose, 2014-03-31 14:13:39]

LGTM.

https://codereview.chromium.org/214673002/diff/1/sdk/lib/_internal/compiler/i...
File sdk/lib/_internal/compiler/implementation/typechecker.dart (left):

https://codereview.chromium.org/214673002/diff/1/sdk/lib/_internal/compiler/i...
sdk/lib/_internal/compiler/implementation/typechecker.dart:514: if
(node.expression.asCascadeReceiver() == null) {
(If I remember correctly, I added this because of a crash, but it seems to work
now.)

When do we see [CascadeReceiver]s?

[Johnni Winther, 2014-04-01 06:45:05]

https://codereview.chromium.org/214673002/diff/1/sdk/lib/_internal/compiler/i...
File sdk/lib/_internal/compiler/implementation/typechecker.dart (left):

https://codereview.chromium.org/214673002/diff/1/sdk/lib/_internal/compiler/i...
sdk/lib/_internal/compiler/implementation/typechecker.dart:514: if
(node.expression.asCascadeReceiver() == null) {
On 2014/03/31 14:13:40, karlklose wrote:
> (If I remember correctly, I added this because of a crash, but it seems to
work
> now.)
> 
> When do we see [CascadeReceiver]s?

Never! [expression] is always a send.

[Johnni Winther, 2014-04-01 07:01:50]

Committed patchset #1 manually as r34585 (presubmit successful).