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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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29
src/plugins/cpptools/cppcodemodelsettings.cpp
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@@ -35,6 +35,7 @@
#include <QSettings>
using namespace CppTools;
using namespace Utils;
static Utils::Id initialClangDiagnosticConfigId()
{ return Constants::CPP_CLANG_DIAG_CONFIG_BUILDSYSTEM; }
@@ -60,6 +61,17 @@ static QString skipIndexingBigFilesKey()
static QString indexerFileSizeLimitKey()
{ return QLatin1String(Constants::CPPTOOLS_INDEXER_FILE_SIZE_LIMIT); }
static QString useClangdKey() { return QLatin1String("UseClangd"); }
static QString clangdPathKey() { return QLatin1String("ClangdPath"); }
static FilePath g_defaultClangdFilePath;
static FilePath fallbackClangdFilePath()
{
if (g_defaultClangdFilePath.exists())
return g_defaultClangdFilePath;
return FilePath::fromString("clangd");
}
static Utils::Id clangDiagnosticConfigIdFromSettings(QSettings *s)
{
QTC_ASSERT(s->group() == QLatin1String(Constants::CPPTOOLS_SETTINGSGROUP), return Utils::Id());
@@ -160,6 +172,9 @@ void CppCodeModelSettings::fromSettings(QSettings *s)
const QVariant indexerFileSizeLimit = s->value(indexerFileSizeLimitKey(), 5);
setIndexerFileSizeLimitInMb(indexerFileSizeLimit.toInt());
setUseClangd(s->value(useClangdKey(), false).toBool());
setClangdFilePath(FilePath::fromString(s->value(clangdPathKey()).toString()));
s->endGroup();
if (write)
@@ -183,6 +198,8 @@ void CppCodeModelSettings::toSettings(QSettings *s)
s->setValue(interpretAmbiguousHeadersAsCHeadersKey(), interpretAmbigiousHeadersAsCHeaders());
s->setValue(skipIndexingBigFilesKey(), skipIndexingBigFiles());
s->setValue(indexerFileSizeLimitKey(), indexerFileSizeLimitInMb());
s->setValue(useClangdKey(), useClangd());
s->setValue(clangdPathKey(), m_clangdFilePath.toString());
s->endGroup();
@@ -282,3 +299,15 @@ void CppCodeModelSettings::setEnableLowerClazyLevels(bool yesno)
{
m_enableLowerClazyLevels = yesno;
}
void CppCodeModelSettings::setDefaultClangdPath(const Utils::FilePath &filePath)
{
g_defaultClangdFilePath = filePath;
}
FilePath CppCodeModelSettings::clangdFilePath() const
{
if (!m_clangdFilePath.isEmpty())
return m_clangdFilePath;
return fallbackClangdFilePath();
}