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Add restart LSP command to VSCode extension (#4916)

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This PR adds a new command to the Carbon VSCode extension "carbon:
Restart language server" which acts similar to clangd / bazel
extensions. While not useful during regular working of the extension
this helps when LSP either crashes or the toolchain is updated.

In order to support graceful restart, I needed to add a Call handler for
"shutdown" which is noop for now. Lsp clients always call shutdown
before sending exit.

---------

Co-authored-by: jonmeow <jperkins@google.com>
This commit is contained in:
DavidLoftus
2025-02-10 23:39:49 +00:00
committed by GitHub
co-authored by jonmeow
parent 063b9d8ca9
commit 2eddfbd7bf
17 changed files with 287 additions and 15 deletions
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toolchain/language_server/testdata/basics/notify_parse_error.carbon
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+20 -1
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@@ -10,11 +10,30 @@
// --- STDIN
[[@LSP-CALL:initialize]]
[[@LSP-NOTIFY:textDocument/didOpen:"nope": "bad"]]
[[@LSP-CALL:shutdown]]
[[@LSP-NOTIFY:exit]]
// --- AUTOUPDATE-SPLIT
// CHECK:STDERR: warning: -32602: in call to `textDocument/didOpen`, JSON parse failed: missing value at (root).textDocument [LanguageServerNotificationParseError]
// CHECK:STDERR:
// CHECK:STDOUT:
// CHECK:STDOUT: Content-Length: 146{{\r}}
// CHECK:STDOUT: {{\r}}
// CHECK:STDOUT: {
// CHECK:STDOUT: "id": 1,
// CHECK:STDOUT: "jsonrpc": "2.0",
// CHECK:STDOUT: "result": {
// CHECK:STDOUT: "capabilities": {
// CHECK:STDOUT: "documentSymbolProvider": true,
// CHECK:STDOUT: "textDocumentSync": 1
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT: }Content-Length: 51{{\r}}
// CHECK:STDOUT: {{\r}}
// CHECK:STDOUT: {
// CHECK:STDOUT: "id": 2,
// CHECK:STDOUT: "jsonrpc": "2.0",
// CHECK:STDOUT: "result": null
// CHECK:STDOUT: }