Feature branch - https://github.com/dotnet/roslyn/tree/features/UnsignedRightShift
Specification - https://github.com/dotnet/csharplang/blob/main/proposals/csharp-11.0/unsigned-right-shift-operator.md
Proposal: dotnet/csharplang#4682

Compiler

• LangVer
• Update test plan
• Verify behavior of VB
• Verify behavior of C++/CLI
• Inform F# of changes

Public APIs

• IOperation
  • shift: TestBinaryOperators_UnsignedRightShift
  • compound assignment?
  • CFG
• Symbol display on >>> operator
• SyntaxNormalizer
• GetSymbolInfo
  • Intrinsic operators
  • User-defined operators
• GetSpeculativeSymbolInfo
• API review

Parsing

• Expressions
• Disambiguation with nested generics
  • Presense of tuple types at various levels
• Operator declaration
  • Regular declarations
  • Explicit implementations

Semantics

• Operator is called
  • Intrinsic operators
  • User-defined operators
• dynamic LHS or RHS
• Lifted operators
  • Intrinsic
  • User-defined
• Constants and constant folding
• Disallowed in expression tree (BuiltIn_Lifted_ExpressionTree_*)
• Results on hover in EE/debugger

Productivity

• F1 on >>> and >>>= - tests are in place, need to add actual doc pages
• Declaring >>> operator
• Using operator in expressions
• QuickInfo should show used operator
  • User-defined operators
  • Intrinsic operators
• >>> token classification
• Syntax normalizer for declarations
• Go to definition from operator usage and explicit interface implementation
• Find all references for operators
• Go To Implementation
• Operator completion for explicit implementation
• Operator completion when available (in expressions on types with the operator)
  • Intrinsic operators
  • User-defined operators
• Implement interface fixer
• Formatter tests
  • Signature formatting
  • Indentation inside operator
• Navbar
• Object Browser
• Metadata as source
• Call hierarchy window
• Code lens