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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "clangutils.h"
#include "filepath.h"
#include "process.h"
#include "utilstr.h"
#include <QVersionNumber>
namespace Utils {
static QVersionNumber getClangdVersion(const FilePath &clangdFilePath)
{
Process clangdProc;
clangdProc.setCommand({clangdFilePath, {"--version"}});
clangdProc.runBlocking();
if (clangdProc.result() != ProcessResult::FinishedWithSuccess)
return {};
const QString output = clangdProc.allOutput();
static const QString versionPrefix = "clangd version ";
const int prefixOffset = output.indexOf(versionPrefix);
if (prefixOffset == -1)
return {};
return QVersionNumber::fromString(output.mid(prefixOffset + versionPrefix.length()));
}
QVersionNumber clangdVersion(const FilePath &clangd)
{
static QHash<FilePath, QPair<QDateTime, QVersionNumber>> versionCache;
const QDateTime timeStamp = clangd.lastModified();
const auto it = versionCache.find(clangd);
if (it == versionCache.end()) {
const QVersionNumber version = getClangdVersion(clangd);
versionCache.insert(clangd, {timeStamp, version});
return version;
}
if (it->first != timeStamp) {
it->first = timeStamp;
it->second = getClangdVersion(clangd);
}
return it->second;
}
bool checkClangdVersion(const FilePath &clangd, QString *error)
{
if (clangd.isEmpty()) {
*error = Tr::tr("No clangd executable specified.");
return false;
}
const QVersionNumber version = clangdVersion(clangd);
if (version >= minimumClangdVersion())
return true;
if (error) {
*error = version.isNull()
? Tr::tr("Failed to retrieve clangd version: Unexpected clangd output.")
: Tr::tr("The clangd version is %1, but %2 or greater is required.")
.arg(version.toString())
.arg(minimumClangdVersion().majorVersion());
}
return false;
}
QVersionNumber minimumClangdVersion()
{
return QVersionNumber(14);
}
} // namespace Utils
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