Implement lsp/formatting for Carbon::LanguageServer (#7688)

Implements formatting support within LSP. Current implementation
performs while file formatting, we just replace file with output of
Carbon::Format()

https://github.com/carbon-language/carbon-lang/pull/7687 independently
improves formatting so that this output is somewhat decent.

Assisted-With: Gemini / Antigravity
This commit is contained in:
DavidLoftus
2026-08-31 16:38:38 +00:00
committed by GitHub
parent f519cccaf2
commit dc2ee5bd5e
31 changed files with 379 additions and 25 deletions
@@ -15,7 +15,7 @@
// CHECK:STDERR: error: Input/output error [LanguageServerTransportError]
// CHECK:STDERR:
// CHECK:STDOUT: Content-Length: 352{{\r}}
// CHECK:STDOUT: Content-Length: 394{{\r}}
// CHECK:STDOUT: {{\r}}
// CHECK:STDOUT: {
// CHECK:STDOUT: "id": 1,
@@ -24,6 +24,7 @@
// CHECK:STDOUT: "capabilities": {
// CHECK:STDOUT: "declarationProvider": true,
// CHECK:STDOUT: "definitionProvider": true,
// CHECK:STDOUT: "documentFormattingProvider": true,
// CHECK:STDOUT: "documentSymbolProvider": true,
// CHECK:STDOUT: "hoverProvider": true,
// CHECK:STDOUT: "positionEncoding": "utf-16",
@@ -20,7 +20,7 @@
// --- AUTOUPDATE-SPLIT
// CHECK:STDOUT: Content-Length: 351{{\r}}
// CHECK:STDOUT: Content-Length: 393{{\r}}
// CHECK:STDOUT: {{\r}}
// CHECK:STDOUT: {
// CHECK:STDOUT: "id": 1,
@@ -29,6 +29,7 @@
// CHECK:STDOUT: "capabilities": {
// CHECK:STDOUT: "declarationProvider": true,
// CHECK:STDOUT: "definitionProvider": true,
// CHECK:STDOUT: "documentFormattingProvider": true,
// CHECK:STDOUT: "documentSymbolProvider": true,
// CHECK:STDOUT: "hoverProvider": true,
// CHECK:STDOUT: "positionEncoding": "utf-8",
@@ -37,7 +38,7 @@
// CHECK:STDOUT: "typeDefinitionProvider": true
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT: }Content-Length: 352{{\r}}
// CHECK:STDOUT: }Content-Length: 394{{\r}}
// CHECK:STDOUT: {{\r}}
// CHECK:STDOUT: {
// CHECK:STDOUT: "id": 2,
@@ -46,6 +47,7 @@
// CHECK:STDOUT: "capabilities": {
// CHECK:STDOUT: "declarationProvider": true,
// CHECK:STDOUT: "definitionProvider": true,
// CHECK:STDOUT: "documentFormattingProvider": true,
// CHECK:STDOUT: "documentSymbolProvider": true,
// CHECK:STDOUT: "hoverProvider": true,
// CHECK:STDOUT: "positionEncoding": "utf-16",
@@ -54,7 +56,7 @@
// CHECK:STDOUT: "typeDefinitionProvider": true
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT: }Content-Length: 352{{\r}}
// CHECK:STDOUT: }Content-Length: 394{{\r}}
// CHECK:STDOUT: {{\r}}
// CHECK:STDOUT: {
// CHECK:STDOUT: "id": 3,
@@ -63,6 +65,7 @@
// CHECK:STDOUT: "capabilities": {
// CHECK:STDOUT: "declarationProvider": true,
// CHECK:STDOUT: "definitionProvider": true,
// CHECK:STDOUT: "documentFormattingProvider": true,
// CHECK:STDOUT: "documentSymbolProvider": true,
// CHECK:STDOUT: "hoverProvider": true,
// CHECK:STDOUT: "positionEncoding": "utf-16",
@@ -19,7 +19,7 @@
// CHECK:STDERR: warning: -32602: in call to `textDocument/didOpen`, JSON parse failed: missing value at (root).textDocument [LanguageServerNotificationParseError]
// CHECK:STDERR:
// CHECK:STDOUT: Content-Length: 352{{\r}}
// CHECK:STDOUT: Content-Length: 394{{\r}}
// CHECK:STDOUT: {{\r}}
// CHECK:STDOUT: {
// CHECK:STDOUT: "id": 1,
@@ -28,6 +28,7 @@
// CHECK:STDOUT: "capabilities": {
// CHECK:STDOUT: "declarationProvider": true,
// CHECK:STDOUT: "definitionProvider": true,
// CHECK:STDOUT: "documentFormattingProvider": true,
// CHECK:STDOUT: "documentSymbolProvider": true,
// CHECK:STDOUT: "hoverProvider": true,
// CHECK:STDOUT: "positionEncoding": "utf-16",