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Description
Implements Scoped Nowarn according to (draft) RFC FS-1146.
This PR has taken a while. I had to deal with much more complexity than I imagined when I naively volunteered to tackle the feature request. Anyway, here we are.
I have split the PR into 7 commits that can be reviewed in sequence.
All of them compile, 1 and 4 - 7 also pass all tests locally.
Add the feature flag, baseline tests, and the core
WarnScopes
module. Seesrc/Compiler/SyntaxTree/WarnScopes.fsi
and the RFC for the functionality of the module.Add the necessary changes to lexing and parsing. Note that the warn directives can no longer be collected during parsing (since they can now appear not only in top-level modules, but anywhere). So we collect them during lexing, similar to the processing of #if/#else/#endif directives.
Remove legacy #nowarn processing (but hold off AST changes)
Integrate the WarnScopes functionality and test it
Add warn directive trivia (but hold off AST changes)
Enable warn directive trivia (which means AST changes)
Remove defunct types and parameters related to former #nowarn processing (more AST changes)
Updated IlVerify baselines (changes in line numbers only)
Checklist