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Code completion using LSP and clangd

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ollydbg:
@BlueHazzard, maybe you can check the log files in your system Temp folder to see what content were sent from the clangd.

Pecan:

--- Quote from: BlueHazzard on July 29, 2022, 10:04:45 pm ---Hi, not quite sure what is happening, and i did not investigate, but i got a crash and this backtrace, just wanted to note it here:

--- Code: ---AddrPC           Params
00007FFC87E084EB 00000158724B49E0 0000002690BFE4F0 00000000FFFF86AD  clangd_client.dll!Parser::LSP_ParseSemanticTokens
00007FFC87E13403 00000158724B49E0 00000158771FF080 0000000000000000  clangd_client.dll!Parser::OnLSP_RequestedSemanticTokensResponse
00007FFC87DB64F1 000001586D6EB3F0 00000158771FF080 0000002690BFEED0  clangd_client.dll!ClgdCompletion::OnLSP_Event
00007FFC2F35398C 000001586CB04130 000001586D6EB3F0 00007FFC2A605B5E  wxmsw315ud_gcc_custom.dll!wxAppConsoleBase::HandleEvent
00007FFC2F353A0D 000001586CB04130 000001586D6EB3F0 000001586D50E880  wxmsw315ud_gcc_custom.dll!wxAppConsoleBase::CallEventHandler
00007FFC2F42DBF4 000001586D50E8E0 000001586D6EB3F0 00000158771FF080  wxmsw315ud_gcc_custom.dll!wxEvtHandler::ProcessEventIfMatchesId
00007FFC2F42E90A 000001586D6EB3F0 00000158771FF080 00000158771FF080  wxmsw315ud_gcc_custom.dll!wxEvtHandler::SearchDynamicEventTable
00007FFC2F42E07A 000001586D6EB3F0 00000158771FF080 0000002690BFF0C0  wxmsw315ud_gcc_custom.dll!wxEvtHandler::TryHereOnly
00007FFC2FC31040 000001586D6EB3F0 00000158771FF080 0000015870E46080  wxmsw315ud_gcc_custom.dll!wxEvtHandler::TryBeforeAndHere
00007FFC2F42DE83 000001586D6EB3F0 00000158771FF080 000001586D6EB3F0  wxmsw315ud_gcc_custom.dll!wxEvtHandler::ProcessEvent
00007FFC2F42DF7F 000001587244F920 00000158771FF080 0000002690BFF120  wxmsw315ud_gcc_custom.dll!wxEvtHandler::DoTryChain
00007FFC2F42DF10 000001587244F920 00000158771FF080 000001586CAB5FB0  wxmsw315ud_gcc_custom.dll!wxEvtHandler::ProcessEventLocally
00007FFC2F42DE95 000001587244F920 00000158771FF080 00000158773507D0  wxmsw315ud_gcc_custom.dll!wxEvtHandler::ProcessEvent
00007FFC2F42DA98 000001587244F920 0000000000000000 000001586CB042F8  wxmsw315ud_gcc_custom.dll!wxEvtHandler::ProcessPendingEvents
00007FFC2F3535ED 000001586CB04130 00007FFC2F4FFA99 000001586CB04130  wxmsw315ud_gcc_custom.dll!wxAppConsoleBase::ProcessPendingEvents
00007FFC2F37666E 000001587479F1C0 0000000000000040 0000002690BFF380  wxmsw315ud_gcc_custom.dll!wxEventLoopManual::ProcessEvents
00007FFC2F37677D 000001587479F1C0 000001587479F1D4 000001587479F100  wxmsw315ud_gcc_custom.dll!wxEventLoopManual::DoRun
00007FFC2F376234 000001587479F1C0 000001586CB042F0 000001587479F1C0  wxmsw315ud_gcc_custom.dll!wxEventLoopBase::Run
00007FFC2F352E88 000001586CB04130 0000000000000055 000001586CAB5FB0  wxmsw315ud_gcc_custom.dll!wxAppConsoleBase::MainLoop
00007FFC2F352BB2 000001586CB04130 00007FFCDC9A03E0 00007FFCDC980000  wxmsw315ud_gcc_custom.dll!wxAppConsoleBase::OnRun
00007FFC2F59BA17 000001586CB04130 000001586CB00000 0000000000000000  wxmsw315ud_gcc_custom.dll!wxAppBase::OnRun
00007FF742BF5C8A 000001586CB04130 00007FFC3028D7B0 000001586B0CC050  codeblocks.exe!CodeBlocksApp::OnRun
00007FFC2F3A0FA2 00007FFC3028D7B0 000001586B0CC050 000001586CAAF898  wxmsw315ud_gcc_custom.dll!wxEntryReal
00007FFC2F436B60 00007FFC3028D7B0 000001586B0CC050 0000000000000000  wxmsw315ud_gcc_custom.dll!wxEntry
00007FFC2F436C45 00007FF742BF0000 0000000000000000 000001586B0C3987  wxmsw315ud_gcc_custom.dll!wxEntry
00007FF742BF2544 00007FF742BF0000 0000000000000000 000001586B0C3987  codeblocks.exe!WinMain
00007FF742BF13B1 0000000000000000 0000000000000000 0000000000000000  codeblocks.exe!__tmainCRTStartup
00007FF742BF14C6 0000000000000000 0000000000000000 0000000000000000  codeblocks.exe!WinMainCRTStartup
00007FFCDC997034 0000000000000000 0000000000000000 0000000000000000  KERNEL32.DLL!BaseThreadInitThunk
00007FFCDD9E2651 0000000000000000 0000000000000000 0000000000000000  ntdll.dll!RtlUserThreadStart


--- End code ---

--- End quote ---
This looks like the crashes during CB shutdown or when closing a file while clangd sent a response to a previous request.
Likely fixed in rev 70.

Pecan:

--- Quote from: ollydbg on July 24, 2022, 07:23:36 am ---
--- Quote from: Pecan on July 24, 2022, 06:58:20 am ---
--- Quote from: ollydbg on July 24, 2022, 06:15:38 am ---I see one bug, I'm not sure it is a clangd bug or our client plugin bug.

When I do code refactoring, I mean I want to rename a variable aaa to bbb.

If there is a line:


--- Quote ---wxLogMessage("aaa", aaa);

--- End quote ---

Then I will get this:


--- Quote ---wxLogMessage("bbb", aaa);

--- End quote ---

maybe, clangd does not give us the column information of a variable? It just tell use the line information?

--- End quote ---

Do you mean that the unquoted aaa should have been changed to the unquoted bbb (the second parameter) ?

--- End quote ---

Yes.

--- End quote ---
Fixed rev 70

BlueHazzard:

--- Quote from: ollydbg on July 30, 2022, 05:02:08 am ---@BlueHazzard, maybe you can check the log files in your system Temp folder to see what content were sent from the clangd.

--- End quote ---
It could be this two logs, but i am not 100% sure:
client log:

--- Code: ---21:58:21.731 Project: Addr2LineUI wx3.1.x (64 bit): codeblocksdir\src\tools\Addr2LineUI\Addr2LineUI_wx31_64.cbp

21:58:21.731 SystemPath: C:\msys64\mingw64\bin;C:\msys64\mingw64\bin\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\System32;C:\Windows;C:\Windows\System32\wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\tools;C:\Program Files\WireGuard;C;C:\Program Files\TortoiseSVN\bin;C:\Program Files\AMD\AMDuProf\bin;C:\Users\eberh\AppData\Local\Microsoft\WindowsApps

21:58:21.733 <<< Initialize(): codeblocksdir/src/tools/Addr2LineUI

21:58:21.734 <<< Content-Length: 1202



{"id":"initialize","jsonrpc":"2.0","method":"initialize","params":{"capabilities":{"offsetEncoding":["utf-8"],"textDocument":{"codeAction":{"codeActionLiteralSupport":true},"completion":{"completionItem":{"deprecatedSupport":true,"snippetSupport":true},"completionItemKind":{"valueSet":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]},"editsNearCursor":true},"documentSymbol":{"hierarchicalDocumentSymbolSupport":true},"hover":{"contentFormat":["plaintext"]},"publishDiagnostics":{"categorySupport":true,"codeActionsInline":true,"relatedInformation":true},"semanticTokens":{"dynamicRegistration":true},"signatureHelp":{"signatureInformation":{"parameterInformation":{"labelOffsetSupport":true}}}},"workspace":{"applyEdit":false,"symbol":{"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]}},"workspaceEdit":{"documentChanges":false}}},"initializationOptions":{"clangdFileStatus":false,"compilationDatabasePath":null,"configSettings":{"compilationDatabaseChanges":{}},"fallbackFlags":[]},"processId":21764,"rootPath":null,"rootUri":"file:///codeblocksdir/src/tools/Addr2LineUI"}}

21:58:21.990 >>> readJson() len:1873:
{"id":"initialize","jsonrpc":"2.0","result":{"capabilities":{"astProvider":true,"callHierarchyProvider":true,"clangdInlayHintsProvider":true,"codeActionProvider":true,"compilationDatabase":{"automaticReload":true},"completionProvider":{"allCommitCharacters":[" ","\t","(",")","[","]","{","}","<",">",":",";",",","+","-","/","*","%","^","&","#","?",".","=","\"","'","|"],"resolveProvider":false,"triggerCharacters":[".","<",">",":","\"","/","*"]},"declarationProvider":true,"definitionProvider":true,"documentFormattingProvider":true,"documentHighlightProvider":true,"documentLinkProvider":{"resolveProvider":false},"documentOnTypeFormattingProvider":{"firstTriggerCharacter":"\n","moreTriggerCharacter":[]},"documentRangeFormattingProvider":true,"documentSymbolProvider":true,"executeCommandProvider":{"commands":["clangd.applyFix","clangd.applyTweak"]},"hoverProvider":true,"implementationProvider":true,"memoryUsageProvider":true,"referencesProvider":true,"renameProvider":true,"selectionRangeProvider":true,"semanticTokensProvider":{"full":{"delta":true},"legend":{"tokenModifiers":["declaration","deprecated","deduced","readonly","static","abstract","virtual","dependentName","defaultLibrary","usedAsMutableReference","functionScope","classScope","fileScope","globalScope"],"tokenTypes":["variable","variable","parameter","function","method","function","property","variable","class","interface","enum","enumMember","type","type","unknown","namespace","typeParameter","concept","type","macro","comment"]},"range":false},"signatureHelpProvider":{"triggerCharacters":["(",")","{","}","<",">",","]},"textDocumentSync":{"change":2,"openClose":true,"save":true},"typeDefinitionProvider":true,"typeHierarchyProvider":true,"workspaceSymbolProvider":true},"offsetEncoding":"utf-8","serverInfo":{"name":"clangd","version":"clangd version 14.0.4 windows x86_64-w64-windows-gnu"}}}

--- End code ---

server:

--- Code: ---Project: Addr2LineUI wx3.1.x (64 bit): codeblocksdir\src\tools\Addr2LineUI\Addr2LineUI_wx31_64.cbp
SystemPath: C:\msys64\mingw64\bin;C:\msys64\mingw64\bin\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\System32;C:\Windows;C:\Windows\System32\wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\tools;C:\Program Files\WireGuard;C;C:\Program Files\TortoiseSVN\bin;C:\Program Files\AMD\AMDuProf\bin;C:\Users\eberh\AppData\Local\Microsoft\WindowsApps
I[21:58:21.827] clangd version 14.0.4

I[21:58:21.828] Features: windows

I[21:58:21.828] PID: 26712

I[21:58:21.828] Working directory: codeblocksdir/src/tools/Addr2LineUI

I[21:58:21.828] argv[0]: C:\msys64\mingw64\bin\clangd.exe

I[21:58:21.828] argv[1]: --log=verbose

I[21:58:21.828] argv[2]: --query-driver=C:\msys64\mingw64\bin\**\x*

I[21:58:21.828] argv[3]: -j=8

I[21:58:21.828] argv[4]: --limit-results=20

I[21:58:21.828] argv[5]: --resource-dir=C:\msys64\mingw64\lib\clang\14.0.4

V[21:58:21.830] User config file is C:/Users/eberh/AppData/Local/clangd/config.yaml

I[21:58:21.830] Starting LSP over stdin/stdout

V[21:58:21.830] <<< {"id":"initialize","jsonrpc":"2.0","method":"initialize","params":{"capabilities":{"offsetEncoding":["utf-8"],"textDocument":{"codeAction":{"codeActionLiteralSupport":true},"completion":{"completionItem":{"deprecatedSupport":true,"snippetSupport":true},"completionItemKind":{"valueSet":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]},"editsNearCursor":true},"documentSymbol":{"hierarchicalDocumentSymbolSupport":true},"hover":{"contentFormat":["plaintext"]},"publishDiagnostics":{"categorySupport":true,"codeActionsInline":true,"relatedInformation":true},"semanticTokens":{"dynamicRegistration":true},"signatureHelp":{"signatureInformation":{"parameterInformation":{"labelOffsetSupport":true}}}},"workspace":{"applyEdit":false,"symbol":{"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]}},"workspaceEdit":{"documentChanges":false}}},"initializationOptions":{"clangdFileStatus":false,"compilationDatabasePath":null,"configSettings":{"compilationDatabaseChanges":{}},"fallbackFlags":[]},"processId":21764,"rootPath":null,"rootUri":"file:///codeblocksdir/src/tools/Addr2LineUI"}}



I[21:58:21.830] <-- initialize("initialize")

I[21:58:21.851] --> reply:initialize("initialize") 21 ms

V[21:58:21.851] >>> {"id":"initialize","jsonrpc":"2.0","result":{"capabilities":{"astProvider":true,"callHierarchyProvider":true,"clangdInlayHintsProvider":true,"codeActionProvider":true,"compilationDatabase":{"automaticReload":true},"completionProvider":{"allCommitCharacters":[" ","\t","(",")","[","]","{","}","<",">",":",";",",","+","-","/","*","%","^","&","#","?",".","=","\"","'","|"],"resolveProvider":false,"triggerCharacters":[".","<",">",":","\"","/","*"]},"declarationProvider":true,"definitionProvider":true,"documentFormattingProvider":true,"documentHighlightProvider":true,"documentLinkProvider":{"resolveProvider":false},"documentOnTypeFormattingProvider":{"firstTriggerCharacter":"\n","moreTriggerCharacter":[]},"documentRangeFormattingProvider":true,"documentSymbolProvider":true,"executeCommandProvider":{"commands":["clangd.applyFix","clangd.applyTweak"]},"hoverProvider":true,"implementationProvider":true,"memoryUsageProvider":true,"referencesProvider":true,"renameProvider":true,"selectionRangeProvider":true,"semanticTokensProvider":{"full":{"delta":true},"legend":{"tokenModifiers":["declaration","deprecated","deduced","readonly","static","abstract","virtual","dependentName","defaultLibrary","usedAsMutableReference","functionScope","classScope","fileScope","globalScope"],"tokenTypes":["variable","variable","parameter","function","method","function","property","variable","class","interface","enum","enumMember","type","type","unknown","namespace","typeParameter","concept","type","macro","comment"]},"range":false},"signatureHelpProvider":{"triggerCharacters":["(",")","{","}","<",">",","]},"textDocumentSync":{"change":2,"openClose":true,"save":true},"typeDefinitionProvider":true,"typeHierarchyProvider":true,"workspaceSymbolProvider":true},"offsetEncoding":"utf-8","serverInfo":{"name":"clangd","version":"clangd version 14.0.4 windows x86_64-w64-windows-gnu"}}}

--- End code ---

Pecan:

--- Quote from: ollydbg on July 30, 2022, 05:02:08 am ---@BlueHazzard, maybe you can check the log files in your system Temp folder to see what content were sent from the clangd.

--- End quote ---

To find a particular clangd_client log, look at the file "CBclangd_LogsIndex.txt" in your temp folder.

Each line contains the processid, the date and time of the log, location of the clangd executable, and the CB project .cbp filename.

The logs are named:
\temp\CBclangd_client-<processID>.log
\temp\CBclangd_server-<processID>.log

The CBclangd_client-<processID>.log is the most interesting for debugging CB.

The CBclangd_client-<processID>.log is useful for probing/debugging clangd and is usually required to submit bug reports to the clangd team.

One log (not so interesting) exists for the CC_ProxyProject.cbp. It handles parsing non-project files.

Two logs for each opened project; The client log and the server log.

The first log line header contains the project it belong to. And the .cbp that created it. the time is on the left.

Edit: 2022/07/31
The log representing a project contains all clangd requests and responses for any file or any target. 
In error, I said that there was a log for each target. Not so.

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