Author: ibiryukov
Date: Fri Jun 7 09:24:38 2019
New Revision: 362811
URL: http://llvm.org/viewvc/llvm-project?rev=362811&view=rev
Log:
[clangd] Return empty results on spurious completion triggers
Summary:
We currently return an error, this causes `coc.nvim` and VSCode to
show an error message in the logs.
Returning empty list of completions allows to avod the error message
without altering other user-visible behavior.
Reviewers: sammccall
Reviewed By: sammccall
Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D62999
Modified:
clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp
clang-tools-extra/trunk/clangd/test/completion-auto-trigger.test
Modified: clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp?rev=362811&r1=362810&r2=362811&view=diff
==============================================================================
--- clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp (original)
+++ clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp Fri Jun 7 09:24:38 2019
@@ -25,16 +25,6 @@
namespace clang {
namespace clangd {
namespace {
-class IgnoreCompletionError : public llvm::ErrorInfo<CancelledError> {
-public:
- void log(llvm::raw_ostream &OS) const override {
- OS << "ignored auto-triggered completion, preceding char did not match";
- }
- std::error_code convertToErrorCode() const override {
- return std::make_error_code(std::errc::operation_canceled);
- }
-};
-
/// Transforms a tweak into a code action that would apply it if executed.
/// EXPECTS: T.prepare() was called and returned true.
CodeAction toCodeAction(const ClangdServer::TweakRef &T, const URIForFile &File,
@@ -738,8 +728,12 @@ void ClangdLSPServer::onCodeAction(const
void ClangdLSPServer::onCompletion(const CompletionParams &Params,
Callback<CompletionList> Reply) {
- if (!shouldRunCompletion(Params))
- return Reply(llvm::make_error<IgnoreCompletionError>());
+ if (!shouldRunCompletion(Params)) {
+ // Clients sometimes auto-trigger completions in undesired places (e.g.
+ // 'a >^ '), we return empty results in those cases.
+ vlog("ignored auto-triggered completion, preceding char did not match");
+ return Reply(CompletionList());
+ }
Server->codeComplete(Params.textDocument.uri.file(), Params.position, CCOpts,
Bind(
[this](decltype(Reply) Reply,
Modified: clang-tools-extra/trunk/clangd/test/completion-auto-trigger.test
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clangd/test/completion-auto-trigger.test?rev=362811&r1=362810&r2=362811&view=diff
==============================================================================
--- clang-tools-extra/trunk/clangd/test/completion-auto-trigger.test (original)
+++ clang-tools-extra/trunk/clangd/test/completion-auto-trigger.test Fri Jun 7 09:24:38 2019
@@ -4,11 +4,12 @@
{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"test:///main.cpp","languageId":"cpp","version":1,"text":"namespace ns { int ns_member; } struct vector { int size; static int default_capacity; };\nvoid test(vector *a, vector *b) {\n if (a > b) {} \n a->size = 10;\n\n a ? a : b;\n ns::ns_member = 10;\n}"}}}
---
{"jsonrpc":"2.0","id":1,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":9},"context":{"triggerKind":2,"triggerCharacter":">"}}}
-# CHECK: "error": {
-# CHECK-NEXT: "code": -32001,
-# CHECK-NEXT: "message": "ignored auto-triggered completion, preceding char did not match"
-# CHECK-NEXT: },
-# CHECK-NEXT: "id": 1,
+# CHECK: "id": 1,
+# CHECK-NEXT: "jsonrpc": "2.0"
+# CHECK-NEXT: "result": {
+# CHECK-NEXT: "isIncomplete": false,
+# CHECK-NEXT: "items": []
+# CHECK-NEXT: }
---
{"jsonrpc":"2.0","id":2,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":3,"character":5},"context":{"triggerKind":2,"triggerCharacter":">"}}}
# CHECK: "id": 2,
@@ -64,11 +65,12 @@
# CHECK-NEXT: }
---
{"jsonrpc":"2.0","id":3,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":5,"character":9},"context":{"triggerKind":2,"triggerCharacter":":"}}}
-# CHECK: "error": {
-# CHECK-NEXT: "code": -32001,
-# CHECK-NEXT: "message": "ignored auto-triggered completion, preceding char did not match"
-# CHECK-NEXT: },
-# CHECK-NEXT: "id": 3,
+# CHECK: "id": 3,
+# CHECK-NEXT: "jsonrpc": "2.0",
+# CHECK-NEXT: "result": {
+# CHECK-NEXT: "isIncomplete": false,
+# CHECK-NEXT: "items": []
+# CHECK-NEXT: }
---
{"jsonrpc":"2.0","id":4,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":6,"character":6},"context":{"triggerKind":2,"triggerCharacter":":"}}}
---