Clang: Add diagnostics

Diagnostics are now moved to the clang backend process. Fixits are
supported too.

Change-Id: I20faacf466bbf78dec479220c3d7b336a47bc453
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/tools/clangbackend/ipcsource/diagnostic.cpp

@@ -0,0 +1,178 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company.  For licensing terms and
+** conditions see http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "diagnostic.h"
+
+#include "clangstring.h"
+#include "diagnosticset.h"
+#include "fixit.h"
+#include "sourcelocation.h"
+#include "sourcerange.h"
+
+#include <diagnosticcontainer.h>
+#include <memory>
+
+namespace ClangBackEnd {
+
+Diagnostic::Diagnostic(CXDiagnostic cxDiagnostic)
+    : cxDiagnostic(cxDiagnostic)
+{
+}
+
+Diagnostic::~Diagnostic()
+{
+    clang_disposeDiagnostic(cxDiagnostic);
+}
+
+Diagnostic::Diagnostic(Diagnostic &&other)
+    : cxDiagnostic(std::move(other.cxDiagnostic))
+{
+    other.cxDiagnostic = nullptr;
+}
+
+Diagnostic &Diagnostic::operator=(Diagnostic &&other)
+{
+    if (this != &other) {
+        clang_disposeDiagnostic(cxDiagnostic);
+        cxDiagnostic = std::move(other.cxDiagnostic);
+        other.cxDiagnostic = nullptr;
+    }
+
+    return *this;
+}
+
+bool Diagnostic::isNull() const
+{
+    return cxDiagnostic == nullptr;
+}
+
+Utf8String Diagnostic::text() const
+{
+    return ClangString(clang_formatDiagnostic(cxDiagnostic, 0));
+}
+
+Utf8String Diagnostic::category() const
+{
+    return ClangString(clang_getDiagnosticCategoryText(cxDiagnostic));
+}
+
+std::pair<Utf8String, Utf8String> Diagnostic::options() const
+{
+    CXString disableString;
+
+    const Utf8String enableOption = ClangString(clang_getDiagnosticOption(cxDiagnostic, &disableString));
+    const Utf8String disableOption = ClangString(disableString);
+
+    return {enableOption, disableOption};
+}
+
+SourceLocation Diagnostic::location() const
+{
+    return SourceLocation(clang_getDiagnosticLocation(cxDiagnostic));
+}
+
+DiagnosticSeverity Diagnostic::severity() const
+{
+    return static_cast<DiagnosticSeverity>(clang_getDiagnosticSeverity(cxDiagnostic));
+}
+
+std::vector<SourceRange> Diagnostic::ranges() const
+{
+    std::vector<SourceRange> ranges;
+
+    const uint rangesCount = clang_getDiagnosticNumRanges(cxDiagnostic);
+
+    ranges.reserve(rangesCount);
+
+    for (uint index = 0; index < rangesCount; ++index)
+        ranges.push_back(SourceRange(clang_getDiagnosticRange(cxDiagnostic, index)));
+
+    return ranges;
+}
+
+std::vector<FixIt> Diagnostic::fixIts() const
+{
+    std::vector<FixIt> fixIts;
+
+    const uint fixItsCount = clang_getDiagnosticNumFixIts(cxDiagnostic);
+
+    fixIts.reserve(fixItsCount);
+
+    for (uint index = 0; index < fixItsCount; ++index)
+        fixIts.push_back(FixIt(cxDiagnostic, index));
+
+    return fixIts;
+}
+
+DiagnosticSet Diagnostic::childDiagnostics() const
+{
+    return DiagnosticSet(clang_getChildDiagnostics(cxDiagnostic));
+}
+
+DiagnosticContainer Diagnostic::toDiagnosticContainer() const
+{
+    return DiagnosticContainer(text(),
+                               category(),
+                               options(),
+                               severity(),
+                               location().toSourceLocationContainer(),
+                               getSourceRangeContainers(),
+                               getFixItContainers(),
+                               childDiagnostics().toDiagnosticContainers());
+}
+
+QVector<SourceRangeContainer> Diagnostic::getSourceRangeContainers() const
+{
+    auto rangeVector = ranges();
+
+    QVector<SourceRangeContainer> sourceRangeContainers;
+    sourceRangeContainers.reserve(rangeVector.size());
+
+    for (auto &&sourceRange : rangeVector)
+        sourceRangeContainers.push_back(sourceRange.toSourceRangeContainer());
+
+    return sourceRangeContainers;
+}
+
+QVector<FixItContainer> Diagnostic::getFixItContainers() const
+{
+    auto fixItVector = fixIts();
+
+    QVector<FixItContainer> fixItContainers;
+    fixItContainers.reserve(fixItVector.size());
+
+    for (auto &&fixIt : fixItVector)
+        fixItContainers.push_back(fixIt.toFixItContainer());
+
+    return fixItContainers;
+}
+
+} // namespace ClangBackEnd
+