Refactor libraries so that JSCM will only use `JSStringImpl` class for
strings.
The goal is to disentangle the native string classes and `JSStringImpl`
and start testing `JSStringImpl` in isolation.
Changes:
- `dart:_string` is no longer available in JSCM.
- Make `int.toString` external to allow patching it differently in JSCM
and normal modes.
`toString` implementations are in `boxed_int_to_string.dart` patch
files.
- `int.parse` now uses JS `parseInt`. However `parseInt` is not
compatible with Dart's `int.parse` so this will cause some more test
failures in JSCM for now.
- Any dependencies to `dart:_string` from JSCM `dart:convert` are
removed. The library implementation now uses JS `TextDecoder` for
UTF-8 decoding.
Note: `TextDecoder` is not available on d8, so text decoding tests
will fail on d8.
JSON encoding and decoding in `dart:convert` will be updated in a
follow-up CL.
- Compiler (translator, constant generator, code generator etc.) is
updated to allocate the `JSStringImpl`s in JSCM.
Initially this will make some JSCM test fail as `int` parsing is not
quite right, those will be fixed in follow-up CLs.
Co-authored-by: Joshua Litt <joshualitt@google.com>
Change-Id: I366e06f44cdc369d28fe47b24015234260304399
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/332680
Reviewed-by: Aske Simon Christensen <askesc@google.com>
Commit-Queue: Ömer Ağacan <omersa@google.com>
Mayank Patke