Implement @patch annotation for patch class members

Implement @patch annotation for patch class members

Allow members of patch classes to be annotated with @patch. The VM
ignores the annotation. I simply replaces the original method
if the name matches, or reports an error if field names match.

Adding a bit is_patched to members to do more checking remains a
TODO. There are currently no unused bits available, and I don’t want
to increase the size of Function objects for this.

BUG=
R=asiva@google.com

Committed: https://github.com/dart-lang/sdk/commit/1a6d1eca3260a8ad270e8fe02457c1da3945cb6b

[hausner, 2016-08-10 17:53:21]

Description was changed from

==========
Implement @patch annotation for patch class members

Allow members of patch classes to be annotated with @patch. The VM
ignores the annotation. I simply replaces the original method
if the name matches, or reports an error if field names match.

Adding a bit is_patched to members to do more checking remains a
TODO. There are currently no unused bits available, and I don’t want
to increase the size of Function objects for this.

BUG=
==========

to

==========
Implement @patch annotation for patch class members

Allow members of patch classes to be annotated with @patch. The VM
ignores the annotation. I simply replaces the original method
if the name matches, or reports an error if field names match.

Adding a bit is_patched to members to do more checking remains a
TODO. There are currently no unused bits available, and I don’t want
to increase the size of Function objects for this.

BUG=
==========

[hausner, 2016-08-10 17:53:22]

hausner@google.com changed reviewers:
+ asiva@google.com, vegorov@google.com

[hausner, 2016-08-10 17:54:38]

Patchset #1 (id:1) has been deleted

[hausner, 2016-08-10 17:56:01]

This unifies the patch syntax for dart2js and the VM.

[siva, 2016-08-10 19:41:58]

lgtm

[hausner, 2016-08-10 19:55:01]

Description was changed from

==========
Implement @patch annotation for patch class members

Allow members of patch classes to be annotated with @patch. The VM
ignores the annotation. I simply replaces the original method
if the name matches, or reports an error if field names match.

Adding a bit is_patched to members to do more checking remains a
TODO. There are currently no unused bits available, and I don’t want
to increase the size of Function objects for this.

BUG=
==========

to

==========
Implement @patch annotation for patch class members

Allow members of patch classes to be annotated with @patch. The VM
ignores the annotation. I simply replaces the original method
if the name matches, or reports an error if field names match.

Adding a bit is_patched to members to do more checking remains a
TODO. There are currently no unused bits available, and I don’t want
to increase the size of Function objects for this.

BUG=
R=asiva@google.com

Committed:
https://github.com/dart-lang/sdk/commit/1a6d1eca3260a8ad270e8fe02457c1da3945cb6b
==========

[hausner, 2016-08-10 19:55:02]

Committed patchset #1 (id:20001) manually as
1a6d1eca3260a8ad270e8fe02457c1da3945cb6b (presubmit successful).