Clang: Refactor TokenInfos

Remove code duplication.

Change-Id: Ib1859f2c3a04f66d0f0b669b4e93a7fc06ab8e61
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/tools/clangbackend/source/tokenprocessoriterator.h

@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "tokeninfo.h"
+
+#include <iterator>
+#include <vector>
+
+#include <clang-c/Index.h>
+
+namespace ClangBackEnd {
+
+using uint = unsigned int;
+
+class DiagnosticSet;
+class Diagnostic;
+
+template<class T>
+class TokenProcessorIterator : public std::iterator<std::forward_iterator_tag, TokenInfo, uint>
+{
+public:
+    TokenProcessorIterator(std::vector<CXCursor>::const_iterator cxCursorIterator,
+                           CXToken *cxToken,
+                           CXTranslationUnit cxTranslationUnit,
+                           std::vector<CXSourceRange> &currentOutputArgumentRanges)
+        : cxCursorIterator(cxCursorIterator),
+          cxToken(cxToken),
+          cxTranslationUnit(cxTranslationUnit),
+          currentOutputArgumentRanges(currentOutputArgumentRanges)
+    {}
+
+    TokenProcessorIterator& operator++()
+    {
+        ++cxCursorIterator;
+        ++cxToken;
+
+        return *this;
+    }
+
+    TokenProcessorIterator operator++(int)
+    {
+        return TokenProcessorIterator(cxCursorIterator++,
+                                      cxToken++,
+                                      cxTranslationUnit,
+                                      currentOutputArgumentRanges);
+    }
+
+    bool operator==(TokenProcessorIterator other) const
+    {
+        return cxCursorIterator == other.cxCursorIterator;
+    }
+
+    bool operator!=(TokenProcessorIterator other) const
+    {
+        return cxCursorIterator != other.cxCursorIterator;
+    }
+
+    T operator*()
+    {
+        T tokenInfo(*cxCursorIterator, cxToken, cxTranslationUnit, currentOutputArgumentRanges);
+        tokenInfo.evaluate();
+        return tokenInfo;
+    }
+
+private:
+    std::vector<CXCursor>::const_iterator cxCursorIterator;
+    CXToken *cxToken;
+    CXTranslationUnit cxTranslationUnit;
+    std::vector<CXSourceRange> &currentOutputArgumentRanges;
+};
+
+} // namespace ClangBackEnd