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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0

#pragma once

#include <texteditor/indenter.h>

#include <clang/Format/Format.h>

namespace ClangFormat {

enum class ReplacementsToKeep { OnlyIndent, IndentAndBefore, All };

class ClangFormatBaseIndenter : public TextEditor::Indenter
{
public:
    ClangFormatBaseIndenter(QTextDocument *doc);

    TextEditor::IndentationForBlock indentationForBlocks(const QVector<QTextBlock> &blocks,
                                                         const TextEditor::TabSettings &tabSettings,
                                                         int cursorPositionInEditor = -1) override;
    void indent(const QTextCursor &cursor,
                const QChar &typedChar,
                const TextEditor::TabSettings &tabSettings,
                int cursorPositionInEditor = -1) override;

    void reindent(const QTextCursor &cursor,
                  const TextEditor::TabSettings &tabSettings,
                  int cursorPositionInEditor = -1) override;

    void autoIndent(const QTextCursor &cursor,
                    const TextEditor::TabSettings &tabSettings,
                    int cursorPositionInEditor = -1) override;
    Utils::Text::Replacements format(const TextEditor::RangesInLines &rangesInLines) override;

    void indentBlock(const QTextBlock &block,
                     const QChar &typedChar,
                     const TextEditor::TabSettings &tabSettings,
                     int cursorPositionInEditor = -1) override;

    int indentFor(const QTextBlock &block,
                  const TextEditor::TabSettings &tabSettings,
                  int cursorPositionInEditor = -1) override;

    bool isElectricCharacter(const QChar &ch) const override;

    Utils::optional<int> margin() const override;

    clang::format::FormatStyle styleForFile() const;

protected:
    virtual bool formatCodeInsteadOfIndent() const { return false; }
    virtual bool formatWhileTyping() const { return false; }
    virtual int lastSaveRevision() const { return 0; }

private:
    void indent(const QTextCursor &cursor, const QChar &typedChar, int cursorPositionInEditor);
    void indentBlocks(const QTextBlock &startBlock,
                      const QTextBlock &endBlock,
                      const QChar &typedChar,
                      int cursorPositionInEditor);
    Utils::Text::Replacements indentsFor(QTextBlock startBlock,
                                         const QTextBlock &endBlock,
                                         const QChar &typedChar,
                                         int cursorPositionInEditor);
    Utils::Text::Replacements replacements(QByteArray buffer,
                                           const QTextBlock &startBlock,
                                           const QTextBlock &endBlock,
                                           int cursorPositionInEditor,
                                           ReplacementsToKeep replacementsToKeep,
                                           const QChar &typedChar = QChar::Null,
                                           bool secondTry = false) const;
};

} // namespace ClangFormat