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** Copyright (C) 2016 The Qt Company Ltd.
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** accordance with the commercial license agreement provided with the
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** GNU General Public License Usage
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#pragma once

#include "cppeditor_global.h"

#include <cplusplus/CppDocument.h>

#include <texteditor/refactoringchanges.h>

namespace CppEditor {

class CppRefactoringChanges;
class CppRefactoringFile;
class CppRefactoringChangesData;
using CppRefactoringFilePtr = QSharedPointer<CppRefactoringFile>;
using CppRefactoringFileConstPtr = QSharedPointer<const CppRefactoringFile>;

class CPPEDITOR_EXPORT CppRefactoringFile: public TextEditor::RefactoringFile
{
public:
    CPlusPlus::Document::Ptr cppDocument() const;
    void setCppDocument(CPlusPlus::Document::Ptr document);

    CPlusPlus::Scope *scopeAt(unsigned index) const;

    bool isCursorOn(unsigned tokenIndex) const;
    bool isCursorOn(const CPlusPlus::AST *ast) const;

    Range range(int start, int end) const;
    Range range(unsigned tokenIndex) const;
    Range range(const CPlusPlus::AST *ast) const;

    const CPlusPlus::Token &tokenAt(unsigned index) const;

    int startOf(unsigned index) const;
    int startOf(const CPlusPlus::AST *ast) const;
    int endOf(unsigned index) const;
    int endOf(const CPlusPlus::AST *ast) const;

    void startAndEndOf(unsigned index, int *start, int *end) const;

    using TextEditor::RefactoringFile::textOf;
    QString textOf(const CPlusPlus::AST *ast) const;

protected:
    CppRefactoringFile(const Utils::FilePath &filePath, const QSharedPointer<TextEditor::RefactoringChangesData> &data);
    CppRefactoringFile(QTextDocument *document, const Utils::FilePath &filePath);
    explicit CppRefactoringFile(TextEditor::TextEditorWidget *editor);

    CppRefactoringChangesData *data() const;
    void fileChanged() override;

    mutable CPlusPlus::Document::Ptr m_cppDocument;

    friend class CppRefactoringChanges; // for access to constructor
};

class CPPEDITOR_EXPORT CppRefactoringChanges: public TextEditor::RefactoringChanges
{
public:
    explicit CppRefactoringChanges(const CPlusPlus::Snapshot &snapshot);

    static CppRefactoringFilePtr file(TextEditor::TextEditorWidget *editor,
                                      const CPlusPlus::Document::Ptr &document);
    CppRefactoringFilePtr file(const Utils::FilePath &filePath) const;
    // safe to use from non-gui threads
    CppRefactoringFileConstPtr fileNoEditor(const Utils::FilePath &filePath) const;

    const CPlusPlus::Snapshot &snapshot() const;

private:
    CppRefactoringChangesData *data() const;
};

} // namespace CppEditor
