[EPIC] Language Server

[retailcoder]

Phase I

• Initialize with a client
• Receive file contents in LSP handlers
• Load project references
• Parse all project files
  • Send WorkdoneProgressStart and notify client of ongoing progress
  • Prioritize opened files
  • Send client folding ranges as soon as parse trees are available

Phase II

• Port the latest RD 2.x parser to the new paradigm
  • Send client semantic highlighting for the active document tab first, open documents second, all others last
  • Send client diagnostics with the same prioritization
• Implement server-side rename refactoring
  • Send client PreviewRename notification
• Implement server-side "formatting"
  • Indenter settings

Phase III

• Handle parameter info requests
• Handle completion list requests
• Handle auto-formatting requests