Switch VS Code Delphi MCP entry
Turns the VS Code Delphi MCP entry off and on with a backup.
Read this when VS Code's own Delphi MCP server and drag-lint should not both run. drag-lint-switch removes the entry with a backup and restores it later.
Details
The LSP stream's feature page: the DelphiLSP proxy merge and the three other LSP-owned features (protocol extensions, full rule set on save, the VS Code switch). The full flag reference is lsp; this page says what each feature is for and how it was verified.
Proxy merge
drag-lint lsp --proxy relays every message between the editor and RAD Studio's
DelphiLSP. Four opt-in flags add drag-lint answers to DelphiLSP's, so one
session shows the compiler's errors and drag-lint's findings together:
| flag | merged answer |
|---|---|
--merge-diagnostics | drag-lint findings appended to publishDiagnostics, tagged source: "drag-lint" |
--merge-completion | drag-lint items unioned into the completion reply, keyed on label and kind |
--merge-hover | drag-lint hover facts appended after a --- rule |
--merge-definition | drag-lint locations when DelphiLSP answers null or empty; also references and workspace symbols |
--merge-budget-ms | per-frame time budget, default 300 |
--delphi-lsp-bits | 32 forwards to the 32-bit DelphiLSP, 64 (default) to bin64 |
With every merge flag off the proxy relays DelphiLSP's bytes unchanged. Merging fails open: a handler that overruns the budget, raises or finds no index makes the proxy forward DelphiLSP's original bytes.
Guards: tests\autotest\run_lsp_proxy_*_guard.ps1.
Protocol extensions
Without a proxy, drag-lint lsp answers from the index: textDocument/documentSymbol,
implementation, declaration, prepareRename / rename, codeLens (caller
counts), semanticTokens/full, inlayHint, workspace/executeCommand
(draglint.showCallers) and the draglint/ping request. The per-method
behaviour is in lsp.
Full rule set on save
drag-lint lsp --full-rules runs drag-lint lint "file" --json on save, so the
editor shows the same findings as the CLI, including dl:ok review markers.
Without the flag the server keeps its small built-in check set unchanged.
VS Code switch
drag-lint-switch.exe switches VS Code's Delphi MCP entry off and on
(drag-lint-switch --vscode --off / --on), keeping a whole-file backup of the mcp.json it edits. See the end of
lsp.
Verification
The proxy merge and the extensions are covered by fixture guards that drive the
built engine over stdio with a stub DelphiLSP; each names a positive control so
that a silent run cannot pass with the feature off. Run the targeted set with
tests\autotest\run_lsp_*_guard.ps1.