dart-sdk/utils
Sigmund Cherem 3c9e924073 Revamp patch_sdk.dart mainly to use libraries.json.
This will make it possible to use the script to create a patched sdk
for dart2js and the vm (some followup needed), which will be useful
to migrate their libraries to nnbd.

In the future, we should be able to leverage this new logic to
write tests that ensure our sdk is warning-free (there are > 80 real
warnings today even on the non-nnbd sdk)

In detail, this CL includes:

* loading the libraries data from libraries.json, this removes the need for a
   hand-crafted libraries.dart that replicates the data in libraries.json.

* auto-generates a libraries.dart in the patched sdk that can be used to run
 dartanalyzer or to compile an sdk with dartdevc-legacy.

* script simplifications in patch_sdk.dart
    * removed tracking of modification stamps. This didn't appeared to be
      used by the ninja rules. I believe it was used to reduce local
      iteration cycles when we were first developing the sdk itself.

    * use Uri directly instead of package:path - this simplifies things,
      especially since the libraries_specification is Uri-based as well.

    * switch to use package:args for parsing options

 * added an option to merge part files in a single file. I've noticed that the
 analyzer provides some false positive errors in part files, but once merged
 they are no longer shown. In particular, we are clearly hitting limitations of
 dartanalyzer on the patched sdk. At this time the old patch-script generated
 an sdk with 1500 warnings, this new script reduces it to 500 (not sure why),
 with merging of part files it goes down to 80.


Change-Id: I6bbaf92ef4554f00c8bf6b38d19bf79d44fb3e94
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125780
Reviewed-by: Nicholas Shahan <nshahan@google.com>
Commit-Queue: Sigmund Cherem <sigmund@google.com>
2019-11-20 22:51:42 +00:00
..
analysis_server
bazel
compiler
dart2native
dartanalyzer
dartdevc Revamp patch_sdk.dart mainly to use libraries.json. 2019-11-20 22:51:42 +00:00
dartdoc
dartfix
dartfmt
gen_kernel
kernel-service
peg
pub
tests/peg
application_snapshot.gni
compile_platform.gni
create_timestamp.gni