mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 22:02:55 +01:00
Richard Smith
9a33fc1673
We currently provide UTF-8 positions, since our source representation is UTF-8 and we use byte offsets as column numbers, but the LSP protocol default is UTF-16 column positions. Negotiate UTF-8 positions where possible; this is supported by essentially every LSP client other than VS Code. In the case where we select a UTF-16 position, we continue to not do any actual conversions, so our column offsets in such cases will continue to be wrong on non-ASCII source files in VS Code. Assisted by: Claude Code
66 lines
2.5 KiB
Plaintext
66 lines
2.5 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/language_server/testdata/basics/initialize.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/language_server/testdata/basics/initialize.carbon
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// --- STDIN
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// A client that offers UTF-8 gets it, so that no position conversion is
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// needed. A client that offers only UTF-16, or that predates LSP 3.17 and
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// offers nothing, gets the protocol default of UTF-16.
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[[@LSP-CALL:initialize:"capabilities": {"general": {"positionEncodings": ["utf-8", "utf-16"]}}]]
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[[@LSP-CALL:initialize:"capabilities": {"general": {"positionEncodings": ["utf-16"]}}]]
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[[@LSP-CALL:initialize:"capabilities": {}]]
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[[@LSP-CALL:shutdown]]
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[[@LSP-NOTIFY:exit]]
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// --- AUTOUPDATE-SPLIT
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// CHECK:STDOUT: Content-Length: 181{{\r}}
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// CHECK:STDOUT: {{\r}}
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// CHECK:STDOUT: {
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// CHECK:STDOUT: "id": 1,
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// CHECK:STDOUT: "jsonrpc": "2.0",
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// CHECK:STDOUT: "result": {
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// CHECK:STDOUT: "capabilities": {
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// CHECK:STDOUT: "documentSymbolProvider": true,
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// CHECK:STDOUT: "positionEncoding": "utf-8",
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// CHECK:STDOUT: "textDocumentSync": 2
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }Content-Length: 182{{\r}}
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// CHECK:STDOUT: {{\r}}
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// CHECK:STDOUT: {
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// CHECK:STDOUT: "id": 2,
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// CHECK:STDOUT: "jsonrpc": "2.0",
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// CHECK:STDOUT: "result": {
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// CHECK:STDOUT: "capabilities": {
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// CHECK:STDOUT: "documentSymbolProvider": true,
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// CHECK:STDOUT: "positionEncoding": "utf-16",
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// CHECK:STDOUT: "textDocumentSync": 2
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }Content-Length: 182{{\r}}
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// CHECK:STDOUT: {{\r}}
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// CHECK:STDOUT: {
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// CHECK:STDOUT: "id": 3,
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// CHECK:STDOUT: "jsonrpc": "2.0",
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// CHECK:STDOUT: "result": {
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// CHECK:STDOUT: "capabilities": {
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// CHECK:STDOUT: "documentSymbolProvider": true,
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// CHECK:STDOUT: "positionEncoding": "utf-16",
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// CHECK:STDOUT: "textDocumentSync": 2
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }Content-Length: 51{{\r}}
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// CHECK:STDOUT: {{\r}}
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// CHECK:STDOUT: {
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// CHECK:STDOUT: "id": 4,
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// CHECK:STDOUT: "jsonrpc": "2.0",
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// CHECK:STDOUT: "result": null
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// CHECK:STDOUT: }
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