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ClangCodeModel: Add experimental clangd support

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If the user has enabled clangd (default is off), we start up one instance
per project when it is opened/changed (including build config switches),
and trigger background indexing.
So far, the index is used to provide results for locators and "Find
Usages".
Per-document functionality such as semantic highlighting and completion
is still provided by libclang.

Change-Id: I12532fca1b9c6278baab560e7238cba6189cde9f
Reviewed-by: David Schulz <david.schulz@qt.io>
This commit is contained in:
Christian Kandeler
2021-02-23 13:51:41 +01:00
parent 8bacd9bdc4
commit ecafdb7543
40 changed files with 881 additions and 190 deletions
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27
src/plugins/languageclient/client.cpp
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@@ -292,7 +292,7 @@ void Client::initialize()
QTC_ASSERT(m_state == Uninitialized, return);
qCDebug(LOGLSPCLIENT) << "initializing language server " << m_displayName;
InitializeParams params;
params.setCapabilities(generateClientCapabilities());
params.setCapabilities(m_clientCapabilities);
params.setInitializationOptions(m_initializationOptions);
if (m_project) {
params.setRootUri(DocumentUri::fromFilePath(m_project->projectDirectory()));
@@ -333,6 +333,16 @@ Client::State Client::state() const
return m_state;
}
ClientCapabilities Client::defaultClientCapabilities()
{
return generateClientCapabilities();
}
void Client::setClientCapabilities(const LanguageServerProtocol::ClientCapabilities &caps)
{
m_clientCapabilities = caps;
}
void Client::openDocument(TextEditor::TextDocument *document)
{
using namespace TextEditor;
@@ -532,6 +542,9 @@ void Client::requestDocumentHighlights(TextEditor::TextEditorWidget *widget)
void Client::activateDocument(TextEditor::TextDocument *document)
{
if (!m_documentActionsEnabled)
return;
auto uri = DocumentUri::fromFilePath(document->filePath());
m_diagnosticManager.showDiagnostics(uri);
SemanticHighligtingSupport::applyHighlight(document, m_highlights.value(uri), capabilities());
@@ -558,6 +571,9 @@ void Client::activateDocument(TextEditor::TextDocument *document)
void Client::deactivateDocument(TextEditor::TextDocument *document)
{
if (!m_documentActionsEnabled)
return;
m_diagnosticManager.hideDiagnostics(document);
resetAssistProviders(document);
document->setFormatter(nullptr);
@@ -1241,6 +1257,9 @@ void Client::handleMethod(const QString &method, const MessageId &id, const ICon
void Client::handleDiagnostics(const PublishDiagnosticsParams &params)
{
if (!m_documentActionsEnabled)
return;
const DocumentUri &uri = params.uri();
const QList<Diagnostic> &diagnostics = params.diagnostics();
@@ -1253,6 +1272,9 @@ void Client::handleDiagnostics(const PublishDiagnosticsParams &params)
void Client::handleSemanticHighlight(const SemanticHighlightingParams &params)
{
if (!m_documentActionsEnabled)
return;
DocumentUri uri;
LanguageClientValue<int> version;
auto textDocument = params.textDocument();
@@ -1283,6 +1305,9 @@ void Client::handleSemanticHighlight(const SemanticHighlightingParams &params)
void Client::rehighlight()
{
if (!m_documentActionsEnabled)
return;
using namespace TextEditor;
for (auto it = m_highlights.begin(), end = m_highlights.end(); it != end; ++it) {
if (TextDocument *doc = TextDocument::textDocumentForFilePath(it.key().toFilePath())) {