ProjectExplorer: Expose toolchain versions

... and use them as a possible criterion when comparing toolchains.

Change-Id: I6053cc5915edd1e146405410ff82ee660fd84c53
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/datafromprocess.h

@@ -31,7 +31,8 @@ public:
     class Parameters
     {
     public:
-        using OutputParser = std::function<std::optional<Data>(const QString &)>;
+        using OutputParser = std::function<
+            std::optional<Data>(const QString & /* stdOut */, const QString & /* stdErr */)>;
         using ErrorHandler = std::function<void(const Process &)>;
         using Callback = std::function<void(const std::optional<Data> &)>;
 
@@ -133,7 +134,7 @@ inline std::optional<Data> DataFromProcess<Data>::handleProcessFinished(
 
     std::optional<Data> data;
     if (params.allowedResults.contains(process->result()))
-        data = params.parser(process->cleanedStdOut());
+        data = params.parser(process->cleanedStdOut(), process->cleanedStdErr());
     else if (params.errorHandler)
         params.errorHandler(*process);
     QMutexLocker<QMutex> cacheLocker(&m_cacheMutex);

src/libs/utils/pathchooser.cpp

@@ -107,9 +107,9 @@ bool BinaryVersionToolTipEventFilter::eventFilter(QObject *o, QEvent *e)
     QTC_ASSERT(le, return false);
 
     const QString binary = le->text();
-    DataFromProcess<QString>::Parameters params(CommandLine(FilePath::fromUserInput(binary),
-                                                            m_arguments),
-                                                [](const QString &output) { return output; });
+    DataFromProcess<QString>::Parameters params(
+        CommandLine(FilePath::fromUserInput(binary), m_arguments),
+        [](const QString &output, const QString &) { return output; });
     params.callback = [binary, self = QPointer(this),
                        le = QPointer(le)](const std::optional<QString> &version) {
         if (!self || !le)

src/plugins/clangtools/executableinfo.cpp

@@ -41,7 +41,8 @@ static QStringList queryClangTidyChecks(const FilePath &executable,
     //       abseil-duration-division
     //       abseil-duration-factory-float
     //       ...
-    static const auto parser = [](const QString &stdOut) -> std::optional<QStringList> {
+    static const auto parser = [](const QString &stdOut,
+                                  const QString &) -> std::optional<QStringList> {
         QString output = stdOut;
         QTextStream stream(&output);
         QString line = stream.readLine();
@@ -85,7 +86,8 @@ static ClazyChecks querySupportedClazyChecks(const FilePath &executablePath)
     //           ...
     //       ]
     //   }
-    static const auto parser = [](const QString &jsonOutput) -> std::optional<ClazyChecks> {
+    static const auto parser = [](const QString &jsonOutput,
+                                  const QString &) -> std::optional<ClazyChecks> {
         const QJsonDocument document = QJsonDocument::fromJson(jsonOutput.toUtf8());
         if (document.isNull())
             return {};
@@ -130,7 +132,8 @@ ClazyStandaloneInfo::ClazyStandaloneInfo(const FilePath &executablePath)
     : defaultChecks(queryClangTidyChecks(executablePath, {})) // Yup, behaves as clang-tidy.
     , supportedChecks(querySupportedClazyChecks(executablePath))
 {
-    static const auto parser = [](const QString &stdOut) -> std::optional<QVersionNumber> {
+    static const auto parser = [](const QString &stdOut,
+                                  const QString &) -> std::optional<QVersionNumber> {
         QString output = stdOut;
         QTextStream stream(&output);
         while (!stream.atEnd()) {
@@ -157,7 +160,8 @@ static FilePath queryResourceDir(const FilePath &clangToolPath)
     //   lib/clang/10.0.1
     //   Error while trying to load a compilation database:
     //   ...
-    const auto parser = [&clangToolPath](const QString &stdOut) -> std::optional<FilePath> {
+    const auto parser =
+        [&clangToolPath](const QString &stdOut, const QString &) -> std::optional<FilePath> {
         QString output = stdOut;
         QTextStream stream(&output);
         const QString path = clangToolPath.parentDir().parentDir()
@@ -180,7 +184,7 @@ static FilePath queryResourceDir(const FilePath &clangToolPath)
 
 QString queryVersion(const FilePath &clangToolPath, QueryFailMode failMode)
 {
-    static const auto parser = [](const QString &stdOut) -> std::optional<QString> {
+    static const auto parser = [](const QString &stdOut, const QString &) -> std::optional<QString> {
         QString output = stdOut;
         QTextStream stream(&output);
         while (!stream.atEnd()) {

src/plugins/git/gerrit/gerritparameters.cpp

@@ -74,8 +74,8 @@ void GerritParameters::setPortFlagBySshType()
 {
     bool isPlink = false;
     if (!ssh.isEmpty()) {
-        DataFromProcess<QString>::Parameters params({ssh, {"-V"}},
-                                                    [](const QString &output) { return output; });
+        DataFromProcess<QString>::Parameters
+            params({ssh, {"-V"}}, [](const QString &output, const QString &) { return output; });
         using namespace std::chrono_literals;
         params.timeout = 1s;
         if (const auto version = DataFromProcess<QString>::getData(params))

src/plugins/projectexplorer/gcctoolchain.cpp

@@ -390,6 +390,10 @@ GccToolchain::GccToolchain(Id typeId, SubType subType)
         setTypeDisplayName(Tr::tr("Clang"));
         syncAutodetectedWithParentToolchains();
     }
+
+    setVersionFlagsAndParser({"-dumpversion"}, [](const QString &output, const QString &) {
+        return QVersionNumber::fromString(output.trimmed());
+    });
 }
 
 GccToolchain::~GccToolchain()

src/plugins/projectexplorer/msvctoolchain.cpp

@@ -852,6 +852,17 @@ MsvcToolchain::MsvcToolchain(Utils::Id typeId)
     setTypeDisplayName(Tr::tr("MSVC"));
     addToAvailableMsvcToolchains(this);
     setTargetAbiKey(KEY_ROOT "SupportedAbi");
+    setVersionFlagsAndParser({}, [](const QString &, const QString &stdErr) -> QVersionNumber {
+        const QString markerString = " Version ";
+        const int markerIndex = stdErr.indexOf(markerString);
+        if (markerIndex == -1)
+            return {};
+        const int versionOffset = markerIndex + markerString.size();
+        const int spaceIndex = stdErr.indexOf(' ', versionOffset);
+        if (spaceIndex == -1)
+            return {};
+        return QVersionNumber::fromString(stdErr.mid(versionOffset, spaceIndex - versionOffset));
+    });
 }
 
 void MsvcToolchain::inferWarningsForLevel(int warningLevel, WarningFlags &flags)
@@ -1677,6 +1688,19 @@ ClangClToolchain::ClangClToolchain()
 {
     setDisplayName("clang-cl");
     setTypeDisplayName(Tr::tr("Clang"));
+    setVersionFlagsAndParser(
+        {"--version"}, [](const QString &output, const QString &) -> QVersionNumber {
+            const QString marker = "clang version ";
+            const int markerIndex = output.indexOf(marker);
+            if (markerIndex == -1)
+                return {};
+            const int versionOffset = markerIndex + marker.size();
+            const int newlineIndex = output.indexOf('\n', versionOffset);
+            if (newlineIndex == -1)
+                return {};
+            return QVersionNumber::fromString(
+                output.mid(versionOffset, newlineIndex - versionOffset).trimmed());
+        });
 }
 
 bool ClangClToolchain::isValid() const
@@ -2251,7 +2275,7 @@ ClangClInfo ClangClInfo::getInfo(const FilePath &filePath)
 {
     QTC_ASSERT(!filePath.isEmpty(), return {});
 
-    static const auto parser = [](const QString &stdOut) {
+    static const auto parser = [](const QString &stdOut, const QString &) {
         ClangClInfo info;
         const QRegularExpressionMatch versionMatch
             = QRegularExpression("clang version (\\d+(\\.\\d+)+)").match(stdOut);

src/plugins/projectexplorer/msvctoolchain.h

@@ -144,7 +144,7 @@ public:
 
     const QList<MsvcToolchain *> &msvcToolchains() const;
     Utils::FilePath clangPath() const { return m_clangPath; }
-    void setClangPath(const Utils::FilePath &path) { m_clangPath = path; }
+    void setClangPath(const Utils::FilePath &path) { m_clangPath = path; clearVersion(); }
 
     Macros msvcPredefinedMacros(const QStringList &cxxflags,
                                 const Utils::Environment &env) const override;

src/plugins/projectexplorer/toolchain.cpp

@@ -12,6 +12,7 @@
 #include "task.h"
 
 #include <utils/async.h>
+#include <utils/datafromprocess.h>
 #include <utils/pathchooser.h>
 #include <utils/qtcassert.h>
 
@@ -77,6 +78,11 @@ public:
 
     Toolchain::MacrosCache m_predefinedMacrosCache;
     Toolchain::HeaderPathsCache m_headerPathsCache;
+
+    QStringList m_versionFlags;
+    Toolchain::VersionParser m_versionParser;
+    std::optional<QVersionNumber> m_version;
+
     std::optional<bool> m_isValid;
     bool m_hasError = false;
 };
@@ -353,6 +359,24 @@ void Toolchain::setTargetAbi(const Abi &abi)
     toolChainUpdated();
 }
 
+QVersionNumber Toolchain::version() const
+{
+    if (d->m_version)
+        return *d->m_version;
+
+    if (!d->m_versionParser || compilerCommand().isEmpty())
+        return {};
+
+    using DFP = DataFromProcess<QVersionNumber>;
+    DFP::Parameters params({compilerCommand(), d->m_versionFlags}, d->m_versionParser);
+    params.environment.setupEnglishOutput();
+    params.environment.set("VSLANG", "1033");
+    d->m_version = DFP::getData(params);
+    if (!d->m_version)
+        d->m_version.emplace();
+    return *d->m_version;
+}
+
 void Toolchain::setTargetAbiNoSignal(const Abi &abi)
 {
     d->m_targetAbi = abi;
@@ -375,6 +399,7 @@ void Toolchain::setCompilerCommand(const FilePath &command)
     if (command == d->m_compilerCommand)
         return;
     d->m_compilerCommand = command;
+    clearVersion();
     toolChainUpdated();
 }
 
@@ -393,6 +418,17 @@ void Toolchain::setTypeDisplayName(const QString &typeName)
     d->m_typeDisplayName = typeName;
 }
 
+void Toolchain::setVersionFlagsAndParser(const QStringList &flags, const VersionParser &parser)
+{
+    d->m_versionFlags = flags;
+    d->m_versionParser = parser;
+}
+
+void Toolchain::clearVersion()
+{
+    d->m_version.reset();
+}
+
 /*!
     Used by the tool chain manager to load user-generated tool chains.
 

src/plugins/projectexplorer/toolchain.h

@@ -19,6 +19,7 @@
 
 #include <QDateTime>
 #include <QSet>
+#include <QVersionNumber>
 
 #include <functional>
 #include <memory>
@@ -99,6 +100,8 @@ public:
     Abi targetAbi() const;
     void setTargetAbi(const Abi &abi);
 
+    QVersionNumber version() const;
+
     virtual ProjectExplorer::Abis supportedAbis() const;
     virtual QString originalTargetTriple() const { return {}; }
     virtual QStringList extraCodeModelFlags() const { return {}; }
@@ -179,6 +182,11 @@ protected:
 
     void setTypeDisplayName(const QString &typeName);
 
+    using VersionParser
+        = std::function<QVersionNumber(const QString & /* stdOut */, const QString & /* stdErr */)>;
+    void setVersionFlagsAndParser(const QStringList &flags, const VersionParser &parser);
+    void clearVersion();
+
     void setTargetAbiNoSignal(const Abi &abi);
     void setTargetAbiKey(const Utils::Key &abiKey);
 
@@ -211,6 +219,7 @@ private:
 
     friend class Internal::ToolchainSettingsAccessor;
     friend class ToolchainFactory;
+    friend class Internal::ToolchainPrivate;
 };
 
 using Toolchains = QList<Toolchain *>;

src/plugins/projectexplorer/toolchainmanager.cpp

@@ -334,8 +334,8 @@ void ToolchainManager::addBadToolchain(const Utils::FilePath &toolchain)
 
 // Use as a tie-breaker for toolchains that match the strong requirements like toolchain type
 // and ABI.
-// For toolchains with the same priority, gives precedence to icecc and ccache
-// and otherwise simply chooses the one with the shortest path.
+// For toolchains with the same priority, gives precedence to icecc and ccache,
+// prefers the higher version and otherwise simply chooses the one with the shortest path.
 bool ToolchainManager::isBetterToolchain(
     const ToolchainBundle &bundle1, const ToolchainBundle &bundle2)
 {
@@ -346,18 +346,20 @@ bool ToolchainManager::isBetterToolchain(
     if (priority1 < priority2)
         return false;
 
-    const QString path1 = bundle1.get(&Toolchain::compilerCommand).path();
-    const QString path2 = bundle2.get(&Toolchain::compilerCommand).path();
+    const FilePath path1 = bundle1.get(&Toolchain::compilerCommand);
+    const FilePath path2 = bundle2.get(&Toolchain::compilerCommand);
+    const QString pathString1 = path1.path();
+    const QString pathString2 = path2.path();
 
-    const bool b1IsIcecc = path1.contains("icecc");
-    const bool b2IsIcecc = path2.contains("icecc");
+    const bool b1IsIcecc = pathString1.contains("icecc");
+    const bool b2IsIcecc = pathString2.contains("icecc");
     if (b1IsIcecc)
         return !b2IsIcecc;
     if (b2IsIcecc)
         return false;
 
-    const bool b1IsCCache = path1.contains("ccache");
-    const bool b2IsCcache = path2.contains("ccache");
+    const bool b1IsCCache = pathString1.contains("ccache");
+    const bool b2IsCcache = pathString2.contains("ccache");
     if (b1IsCCache)
         return !b2IsCcache;
     if (b2IsCcache)
@@ -383,7 +385,18 @@ bool ToolchainManager::isBetterToolchain(
         }
     }
 
-    return path1.size() < path2.size();
+    if (!path1.needsDevice() && !path2.needsDevice()) {
+        const QVersionNumber v1 = bundle1.get(&Toolchain::version);
+        const QVersionNumber v2 = bundle2.get(&Toolchain::version);
+        if (!v1.isNull() && !v2.isNull()) {
+            if (v1 > v2)
+                return true;
+            if (v1 < v2)
+                return false;
+        }
+    }
+
+    return pathString1.size() < pathString2.size();
 }
 
 } // namespace ProjectExplorer