Fixes https://github.com/dart-lang/sdk/issues/54247
The main piece of this CL is a rewrite of the `ignoredElements`
extension on CommentToken. This was a private extension getter, but
is made public now for two reasons: first is to reference it in tests,
and second is to make it available for a new lint rule in an upcoming
CL.
The new implementation drops all use of RegExp in order to more
precisely track when we may be at the end of a list of diagnostic
names and/or types. So the functional change here is that a diagnostic
name or type followed by whitespace instead of a comma marks the end
of the list. Any characters following that whitespace are not parsed,
as they are considered freeform comment text. While the new
implementation parses a comment code-unit-by-code-unit, it is still
a rather concise impl.
* Rename DiagnosticName and DiagnosticType to IgnoredDiagnosticName
and IgnoredDiagnosticType; these names make more sense to me,
specifically when they are used outside of the ignore_info.dart
file.
* I introduce a new test file, ignore_info_test, to capture these
various parsing particulars, that aren't specifically concerned with
matching an ignore comment with a diagnostic. A few test cases from
ErrorSuppressionTest are moved over here.
* A number of String (well, int, technically) helper functions are
moved to analyzer, along with their tests.
Fixes https://github.com/dart-lang/sdk/issues/54247
Change-Id: Ife08d448a4e03b8a55b183d88a3ea8d07812fbdc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363820
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>
Sam Rawlins
0895727c59