ClangFormat: Refactor indenter to allow ClangFormat unit-tests

We do not build texteditor files in unit-tests so some tricks
were required to make ClangFormatIndenter available.

First simple unit-test proofs it builds and runs.

Change-Id: I81d5ea099bd27fd1c1ed8b5b7877299dcc62a67f
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

66 files changed, 978 insertions, 808 deletions

diff --git a/src/plugins/android/javaeditor.cpp b/src/plugins/android/javaeditor.cpp
index 8b023b1703..85ea22442b 100644
--- a/src/plugins/android/javaeditor.cpp
+++ b/src/plugins/android/javaeditor.cpp
@@ -49,7 +49,7 @@ static TextEditor::TextDocument *createJavaDocument()
     auto doc = new TextEditor::TextDocument;
     doc->setId(Constants::JAVA_EDITOR_ID);
     doc->setMimeType(QLatin1String(Constants::JAVA_MIMETYPE));
-    doc->setIndenter(new JavaIndenter);
+    doc->setIndenter(new JavaIndenter(doc->document()));
     return doc;
 }
 
diff --git a/src/plugins/android/javaindenter.cpp b/src/plugins/android/javaindenter.cpp
index 6b6d45d7ce..270e9cf988 100644
--- a/src/plugins/android/javaindenter.cpp
+++ b/src/plugins/android/javaindenter.cpp
@@ -31,7 +31,9 @@
 using namespace Android;
 using namespace Android::Internal;
 
-JavaIndenter::JavaIndenter() = default;
+JavaIndenter::JavaIndenter(QTextDocument *doc)
+    : TextEditor::TextIndenter(doc)
+{}
 
 JavaIndenter::~JavaIndenter() = default;
 
@@ -44,20 +46,17 @@ bool JavaIndenter::isElectricCharacter(const QChar &ch) const
     return false;
 }
 
-void JavaIndenter::indentBlock(QTextDocument *doc,
-                               const QTextBlock &block,
+void JavaIndenter::indentBlock(const QTextBlock &block,
                                const QChar &typedChar,
                                const TextEditor::TabSettings &tabSettings)
 {
-    Q_UNUSED(doc);
     int indent = indentFor(block, tabSettings);
     if (typedChar == QLatin1Char('}'))
         indent -= tabSettings.m_indentSize;
     tabSettings.indentLine(block, qMax(0, indent));
 }
 
-int JavaIndenter::indentFor(const QTextBlock &block,
-                            const TextEditor::TabSettings &tabSettings)
+int JavaIndenter::indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings)
 {
     QTextBlock previous = block.previous();
     if (!previous.isValid())
diff --git a/src/plugins/android/javaindenter.h b/src/plugins/android/javaindenter.h
index 2b40851fd4..8a93058e83 100644
--- a/src/plugins/android/javaindenter.h
+++ b/src/plugins/android/javaindenter.h
@@ -25,20 +25,19 @@
 
 #pragma once
 
-#include <texteditor/indenter.h>
+#include <texteditor/textindenter.h>
 
 namespace Android {
 namespace Internal {
-class JavaIndenter : public TextEditor::Indenter
+class JavaIndenter : public TextEditor::TextIndenter
 {
 public:
-    JavaIndenter();
+    explicit JavaIndenter(QTextDocument *doc);
     ~JavaIndenter() override;
 
     bool isElectricCharacter(const QChar &ch) const override;
 
-    void indentBlock(QTextDocument *doc,
-                     const QTextBlock &block,
+    void indentBlock(const QTextBlock &block,
                      const QChar &typedChar,
                      const TextEditor::TabSettings &tabSettings) override;
 
diff --git a/src/plugins/clangformat/clangformat-source.pri b/src/plugins/clangformat/clangformat-source.pri
new file mode 100644
index 0000000000..4aafbe77bf
--- /dev/null
+++ b/src/plugins/clangformat/clangformat-source.pri
@@ -0,0 +1,8 @@
+INCLUDEPATH += $$PWD
+
+HEADERS += \
+    $$PWD/clangformatconstants.h \
+    $$PWD/clangformatbaseindenter.h
+
+SOURCES += \
+    $$PWD/clangformatbaseindenter.cpp
diff --git a/src/plugins/clangformat/clangformat.pro b/src/plugins/clangformat/clangformat.pro
index 6696b3b0de..2e168fdbc5 100644
--- a/src/plugins/clangformat/clangformat.pro
+++ b/src/plugins/clangformat/clangformat.pro
@@ -1,4 +1,5 @@
 include(../../qtcreatorplugin.pri)
+include(clangformat-source.pri)
 include(../../shared/clang/clang_installation.pri)
 
 include(../../shared/clang/clang_defines.pri)
@@ -19,17 +20,16 @@ QMAKE_CXXFLAGS *= $$LLVM_CXXFLAGS
 gcc:QMAKE_CXXFLAGS *= -Wno-comment
 unix:!macos:QMAKE_LFLAGS += -Wl,--exclude-libs,ALL
 
-SOURCES = \
+SOURCES += \
     clangformatconfigwidget.cpp \
     clangformatindenter.cpp \
     clangformatplugin.cpp \
     clangformatutils.cpp
 
-HEADERS = \
+HEADERS += \
     clangformatconfigwidget.h \
     clangformatindenter.h \
     clangformatplugin.h \
-    clangformatconstants.h \
     clangformatutils.h
 
 FORMS += \
diff --git a/src/plugins/clangformat/clangformat.qbs b/src/plugins/clangformat/clangformat.qbs
index 6c23ee0430..cbfaffe657 100644
--- a/src/plugins/clangformat/clangformat.qbs
+++ b/src/plugins/clangformat/clangformat.qbs
@@ -30,6 +30,8 @@ QtcPlugin {
     cpp.rpaths: base.concat(libclang.llvmLibDir)
 
     files: [
+        "clangformatbaseindenter.h",
+        "clangformatbaseindenter.cpp",
         "clangformatconfigwidget.cpp",
         "clangformatconfigwidget.h",
         "clangformatconfigwidget.ui",
diff --git a/src/plugins/clangformat/clangformatbaseindenter.cpp b/src/plugins/clangformat/clangformatbaseindenter.cpp
new file mode 100644
index 0000000000..dde629cdd0
--- /dev/null
+++ b/src/plugins/clangformat/clangformatbaseindenter.cpp
@@ -0,0 +1,500 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 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 "clangformatbaseindenter.h"
+
+#include <clang/Tooling/Core/Replacement.h>
+
+#include <utils/fileutils.h>
+#include <utils/textutils.h>
+#include <utils/qtcassert.h>
+
+#include <QTextDocument>
+
+namespace ClangFormat {
+
+static void adjustFormatStyleForLineBreak(clang::format::FormatStyle &style)
+{
+    style.DisableFormat = false;
+    style.ColumnLimit = 0;
+#ifdef KEEP_LINE_BREAKS_FOR_NON_EMPTY_LINES_BACKPORTED
+    style.KeepLineBreaksForNonEmptyLines = true;
+#endif
+    style.MaxEmptyLinesToKeep = 2;
+    style.SortIncludes = false;
+    style.SortUsingDeclarations = false;
+}
+
+static llvm::StringRef clearExtraNewline(llvm::StringRef text)
+{
+    while (text.startswith("\n\n"))
+        text = text.drop_front();
+    return text;
+}
+
+static clang::tooling::Replacements filteredReplacements(
+    const clang::tooling::Replacements &replacements,
+    int offset,
+    int extraOffsetToAdd,
+    bool onlyIndention)
+{
+    clang::tooling::Replacements filtered;
+    for (const clang::tooling::Replacement &replacement : replacements) {
+        int replacementOffset = static_cast<int>(replacement.getOffset());
+        if (onlyIndention && replacementOffset != offset - 1)
+            continue;
+
+        if (replacementOffset + 1 >= offset)
+            replacementOffset += extraOffsetToAdd;
+
+        llvm::StringRef text = onlyIndention ? clearExtraNewline(replacement.getReplacementText())
+                                             : replacement.getReplacementText();
+
+        llvm::Error error = filtered.add(
+            clang::tooling::Replacement(replacement.getFilePath(),
+                                        static_cast<unsigned int>(replacementOffset),
+                                        replacement.getLength(),
+                                        text));
+        // Throws if error is not checked.
+        if (error)
+            break;
+    }
+    return filtered;
+}
+
+static void trimFirstNonEmptyBlock(const QTextBlock &currentBlock)
+{
+    QTextBlock prevBlock = currentBlock.previous();
+    while (prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty())
+        prevBlock = prevBlock.previous();
+
+    if (prevBlock.text().trimmed().isEmpty())
+        return;
+
+    const QString initialText = prevBlock.text();
+    if (!initialText.at(initialText.size() - 1).isSpace())
+        return;
+
+    auto lastNonSpace = std::find_if_not(initialText.rbegin(),
+                                         initialText.rend(),
+                                         [](const QChar &letter) { return letter.isSpace(); });
+    const int extraSpaceCount = static_cast<int>(std::distance(initialText.rbegin(), lastNonSpace));
+
+    QTextCursor cursor(prevBlock);
+    cursor.beginEditBlock();
+    cursor.movePosition(QTextCursor::Right,
+                        QTextCursor::MoveAnchor,
+                        initialText.size() - extraSpaceCount);
+    cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, extraSpaceCount);
+    cursor.removeSelectedText();
+    cursor.endEditBlock();
+}
+
+static void trimCurrentBlock(const QTextBlock &currentBlock)
+{
+    if (currentBlock.text().trimmed().isEmpty()) {
+        // Clear the block containing only spaces
+        QTextCursor cursor(currentBlock);
+        cursor.beginEditBlock();
+        cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
+        cursor.removeSelectedText();
+        cursor.endEditBlock();
+    }
+}
+
+// Returns the total langth of previous lines with pure whitespace.
+static int previousEmptyLinesLength(const QTextBlock &currentBlock)
+{
+    int length{0};
+    QTextBlock prevBlock = currentBlock.previous();
+    while (prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty()) {
+        length += prevBlock.text().length() + 1;
+        prevBlock = prevBlock.previous();
+    }
+
+    return length;
+}
+
+static void modifyToIndentEmptyLines(
+    QByteArray &buffer, int offset, int &length, const QTextBlock &block, bool secondTry)
+{
+    const QString blockText = block.text().trimmed();
+    const bool closingParenBlock = blockText.startsWith(')');
+    if (blockText.isEmpty() || closingParenBlock) {
+        //This extra text works for the most cases.
+        QByteArray dummyText("a;");
+
+        // Search for previous character
+        QTextBlock prevBlock = block.previous();
+        bool prevBlockIsEmpty = prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty();
+        while (prevBlockIsEmpty) {
+            prevBlock = prevBlock.previous();
+            prevBlockIsEmpty = prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty();
+        }
+        if (prevBlock.text().endsWith(','))
+            dummyText = "int a";
+
+        if (closingParenBlock) {
+            if (prevBlock.text().endsWith(','))
+                dummyText = "int a";
+            else
+                dummyText = "&& a";
+        }
+
+        length += dummyText.length();
+        buffer.insert(offset, dummyText);
+    }
+
+    if (secondTry) {
+        int nextLinePos = buffer.indexOf('\n', offset);
+        if (nextLinePos > 0) {
+            // If first try was not successful try to put ')' in the end of the line to close possibly
+            // unclosed parentheses.
+            // TODO: Does it help to add different endings depending on the context?
+            buffer.insert(nextLinePos, ')');
+            length += 1;
+        }
+    }
+}
+
+static const int kMaxLinesFromCurrentBlock = 200;
+
+static Utils::LineColumn utf16LineColumn(const QTextBlock &block,
+                                         int blockOffsetUtf8,
+                                         const QByteArray &utf8Buffer,
+                                         int utf8Offset)
+{
+    // If lastIndexOf('\n') returns -1 then we are fine to add 1 and get 0 offset.
+    const int lineStartUtf8Offset = utf8Buffer.lastIndexOf('\n', utf8Offset - 1) + 1;
+    int line = block.blockNumber() + 1; // Init with the line corresponding the block.
+
+    if (utf8Offset < blockOffsetUtf8) {
+        line -= static_cast<int>(std::count(utf8Buffer.begin() + lineStartUtf8Offset,
+                                            utf8Buffer.begin() + blockOffsetUtf8,
+                                            '\n'));
+    } else {
+        line += static_cast<int>(std::count(utf8Buffer.begin() + blockOffsetUtf8,
+                                            utf8Buffer.begin() + lineStartUtf8Offset,
+                                            '\n'));
+    }
+
+    const QByteArray lineText = utf8Buffer.mid(lineStartUtf8Offset,
+                                               utf8Offset - lineStartUtf8Offset);
+    return Utils::LineColumn(line, QString::fromUtf8(lineText).size() + 1);
+}
+
+static TextEditor::Replacements utf16Replacements(const QTextBlock &block,
+                                                  int blockOffsetUtf8,
+                                                  const QByteArray &utf8Buffer,
+                                                  const clang::tooling::Replacements &replacements)
+{
+    TextEditor::Replacements convertedReplacements;
+    convertedReplacements.reserve(replacements.size());
+    for (const clang::tooling::Replacement &replacement : replacements) {
+        const Utils::LineColumn lineColUtf16 = utf16LineColumn(block,
+                                                               blockOffsetUtf8,
+                                                               utf8Buffer,
+                                                               static_cast<int>(
+                                                                   replacement.getOffset()));
+        if (!lineColUtf16.isValid())
+            continue;
+        const int utf16Offset = Utils::Text::positionInText(block.document(),
+                                                            lineColUtf16.line,
+                                                            lineColUtf16.column);
+        const int utf16Length = QString::fromUtf8(
+                                    utf8Buffer.mid(static_cast<int>(replacement.getOffset()),
+                                                   static_cast<int>(replacement.getLength())))
+                                    .size();
+        convertedReplacements.emplace_back(utf16Offset,
+                                           utf16Length,
+                                           QString::fromStdString(replacement.getReplacementText()));
+    }
+
+    return convertedReplacements;
+}
+
+static void applyReplacements(const QTextBlock &block, const TextEditor::Replacements &replacements)
+{
+    if (replacements.empty())
+        return;
+
+    int fullOffsetShift = 0;
+    QTextCursor editCursor(block);
+    for (const TextEditor::Replacement &replacement : replacements) {
+        editCursor.beginEditBlock();
+        editCursor.setPosition(replacement.offset + fullOffsetShift);
+        editCursor.movePosition(QTextCursor::NextCharacter,
+                                QTextCursor::KeepAnchor,
+                                replacement.length);
+        editCursor.removeSelectedText();
+        editCursor.insertText(replacement.text);
+        editCursor.endEditBlock();
+        fullOffsetShift += replacement.text.length() - replacement.length;
+    }
+}
+
+static QString selectedLines(QTextDocument *doc,
+                             const QTextBlock &startBlock,
+                             const QTextBlock &endBlock)
+{
+    QString text = Utils::Text::textAt(QTextCursor(doc),
+                                       startBlock.position(),
+                                       std::max(0,
+                                                endBlock.position() + endBlock.length()
+                                                    - startBlock.position() - 1));
+    while (!text.isEmpty() && text.rbegin()->isSpace())
+        text.chop(1);
+    return text;
+}
+
+ClangFormatBaseIndenter::ClangFormatBaseIndenter(QTextDocument *doc)
+    : TextEditor::Indenter(doc)
+{}
+
+TextEditor::IndentationForBlock ClangFormatBaseIndenter::indentationForBlocks(
+    const QVector<QTextBlock> &blocks, const TextEditor::TabSettings & /*tabSettings*/)
+{
+    TextEditor::IndentationForBlock ret;
+    for (QTextBlock block : blocks)
+        ret.insert(block.blockNumber(), indentFor(block));
+    return ret;
+}
+
+void ClangFormatBaseIndenter::indent(const QTextCursor &cursor, const QChar &typedChar)
+{
+    if (cursor.hasSelection()) {
+        // Calling currentBlock.next() might be unsafe because we change the document.
+        // Let's operate with block numbers instead.
+        const int startNumber = m_doc->findBlock(cursor.selectionStart()).blockNumber();
+        const int endNumber = m_doc->findBlock(cursor.selectionEnd()).blockNumber();
+        for (int currentBlockNumber = startNumber; currentBlockNumber <= endNumber;
+             ++currentBlockNumber) {
+            const QTextBlock currentBlock = m_doc->findBlockByNumber(currentBlockNumber);
+            if (currentBlock.isValid()) {
+                const int blocksAmount = m_doc->blockCount();
+                indentBlock(currentBlock, typedChar);
+                QTC_CHECK(blocksAmount == m_doc->blockCount()
+                          && "ClangFormat plugin indentation changed the amount of blocks.");
+            }
+        }
+    } else {
+        indentBlock(cursor.block(), typedChar);
+    }
+}
+
+void ClangFormatBaseIndenter::indent(const QTextCursor &cursor,
+                                     const QChar &typedChar,
+                                     const TextEditor::TabSettings & /*tabSettings*/)
+{
+    indent(cursor, typedChar);
+}
+
+void ClangFormatBaseIndenter::reindent(const QTextCursor &cursor,
+                                       const TextEditor::TabSettings & /*tabSettings*/)
+{
+    indent(cursor, QChar::Null);
+}
+
+TextEditor::Replacements ClangFormatBaseIndenter::format(
+    const QTextCursor &cursor, const TextEditor::TabSettings & /*tabSettings*/)
+{
+    int utf8Offset;
+    int utf8Length;
+    const QByteArray buffer = m_doc->toPlainText().toUtf8();
+    QTextBlock block = cursor.block();
+    if (cursor.hasSelection()) {
+        block = m_doc->findBlock(cursor.selectionStart());
+        const QTextBlock end = m_doc->findBlock(cursor.selectionEnd());
+        utf8Offset = Utils::Text::utf8NthLineOffset(m_doc, buffer, block.blockNumber() + 1);
+        QTC_ASSERT(utf8Offset >= 0, return TextEditor::Replacements(););
+        utf8Length = selectedLines(m_doc, block, end).toUtf8().size();
+
+    } else {
+        const QTextBlock block = cursor.block();
+        utf8Offset = Utils::Text::utf8NthLineOffset(m_doc, buffer, block.blockNumber() + 1);
+        QTC_ASSERT(utf8Offset >= 0, return TextEditor::Replacements(););
+        utf8Length = block.text().toUtf8().size();
+    }
+
+    const TextEditor::Replacements toReplace
+        = replacements(buffer, utf8Offset, utf8Length, block, QChar::Null, false);
+    applyReplacements(block, toReplace);
+
+    return toReplace;
+}
+
+void ClangFormatBaseIndenter::indentBlock(const QTextBlock &block, const QChar &typedChar)
+{
+    trimFirstNonEmptyBlock(block);
+    trimCurrentBlock(block);
+    const QByteArray buffer = m_doc->toPlainText().toUtf8();
+    const int utf8Offset = Utils::Text::utf8NthLineOffset(m_doc, buffer, block.blockNumber() + 1);
+    QTC_ASSERT(utf8Offset >= 0, return;);
+
+    applyReplacements(block, replacements(buffer, utf8Offset, 0, block, typedChar));
+}
+
+void ClangFormatBaseIndenter::indentBlock(const QTextBlock &block,
+                                          const QChar &typedChar,
+                                          const TextEditor::TabSettings & /*tabSettings*/)
+{
+    indentBlock(block, typedChar);
+}
+
+int ClangFormatBaseIndenter::indentFor(const QTextBlock &block)
+{
+    trimFirstNonEmptyBlock(block);
+    trimCurrentBlock(block);
+    const QByteArray buffer = m_doc->toPlainText().toUtf8();
+    const int utf8Offset = Utils::Text::utf8NthLineOffset(m_doc, buffer, block.blockNumber() + 1);
+    QTC_ASSERT(utf8Offset >= 0, return 0;);
+
+    const TextEditor::Replacements toReplace = replacements(buffer, utf8Offset, 0, block);
+
+    if (toReplace.empty())
+        return -1;
+
+    const TextEditor::Replacement &replacement = toReplace.front();
+    int afterLineBreak = replacement.text.lastIndexOf('\n');
+    afterLineBreak = (afterLineBreak < 0) ? 0 : afterLineBreak + 1;
+    return static_cast<int>(replacement.text.size() - afterLineBreak);
+}
+
+int ClangFormatBaseIndenter::indentFor(const QTextBlock &block,
+                                       const TextEditor::TabSettings & /*tabSettings*/)
+{
+    return indentFor(block);
+}
+
+bool ClangFormatBaseIndenter::isElectricCharacter(const QChar &ch) const
+{
+    switch (ch.toLatin1()) {
+    case '{':
+    case '}':
+    case ':':
+    case '#':
+    case '<':
+    case '>':
+    case ';':
+    case '(':
+    case ')':
+    case ',':
+    case '.':
+        return true;
+    }
+    return false;
+}
+
+clang::format::FormatStyle ClangFormatBaseIndenter::styleForFile() const
+{
+    llvm::Expected<clang::format::FormatStyle> style
+        = clang::format::getStyle("file", m_fileName.toString().toStdString(), "none");
+    if (style)
+        return *style;
+
+    handleAllErrors(style.takeError(), [](const llvm::ErrorInfoBase &) {
+        // do nothing
+    });
+
+    return clang::format::getLLVMStyle();
+}
+
+TextEditor::Replacements ClangFormatBaseIndenter::replacements(QByteArray buffer,
+                                                               int utf8Offset,
+                                                               int utf8Length,
+                                                               const QTextBlock &block,
+                                                               const QChar &typedChar,
+                                                               bool onlyIndention,
+                                                               bool secondTry) const
+{
+    clang::format::FormatStyle style = styleForFile();
+
+    int originalOffsetUtf8 = utf8Offset;
+    int originalLengthUtf8 = utf8Length;
+    QByteArray originalBuffer = buffer;
+
+    int extraOffset = 0;
+    if (onlyIndention) {
+        if (block.blockNumber() > kMaxLinesFromCurrentBlock) {
+            extraOffset = Utils::Text::utf8NthLineOffset(block.document(),
+                                                         buffer,
+                                                         block.blockNumber()
+                                                             - kMaxLinesFromCurrentBlock);
+        }
+        int endOffset = Utils::Text::utf8NthLineOffset(block.document(),
+                                                       buffer,
+                                                       block.blockNumber()
+                                                           + kMaxLinesFromCurrentBlock);
+        if (endOffset == -1)
+            endOffset = buffer.size();
+
+        buffer = buffer.mid(extraOffset, endOffset - extraOffset);
+        utf8Offset -= extraOffset;
+
+        const int emptySpaceLength = previousEmptyLinesLength(block);
+        utf8Offset -= emptySpaceLength;
+        buffer.remove(utf8Offset, emptySpaceLength);
+
+        extraOffset += emptySpaceLength;
+
+        adjustFormatStyleForLineBreak(style);
+        if (typedChar == QChar::Null)
+            modifyToIndentEmptyLines(buffer, utf8Offset, utf8Length, block, secondTry);
+    }
+
+    std::vector<clang::tooling::Range> ranges{
+        {static_cast<unsigned int>(utf8Offset), static_cast<unsigned int>(utf8Length)}};
+    clang::format::FormattingAttemptStatus status;
+
+    clang::tooling::Replacements clangReplacements = reformat(style,
+                                                              buffer.data(),
+                                                              ranges,
+                                                              m_fileName.toString().toStdString(),
+                                                              &status);
+
+    if (!status.FormatComplete)
+        return TextEditor::Replacements();
+
+    const clang::tooling::Replacements filtered = filteredReplacements(clangReplacements,
+                                                                       utf8Offset,
+                                                                       extraOffset,
+                                                                       onlyIndention);
+    const bool canTryAgain = onlyIndention && typedChar == QChar::Null && !secondTry;
+    if (canTryAgain && filtered.empty()) {
+        return replacements(originalBuffer,
+                            originalOffsetUtf8,
+                            originalLengthUtf8,
+                            block,
+                            typedChar,
+                            onlyIndention,
+                            true);
+    }
+
+    return utf16Replacements(block, originalOffsetUtf8, originalBuffer, filtered);
+}
+
+} // namespace ClangFormat
diff --git a/src/plugins/clangformat/clangformatbaseindenter.h b/src/plugins/clangformat/clangformatbaseindenter.h
new file mode 100644
index 0000000000..47137420d7
--- /dev/null
+++ b/src/plugins/clangformat/clangformatbaseindenter.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 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 <texteditor/indenter.h>
+
+#include <clang/Format/Format.h>
+
+namespace ClangFormat {
+
+class ClangFormatBaseIndenter : public TextEditor::Indenter
+{
+public:
+    ClangFormatBaseIndenter(QTextDocument *doc);
+
+    TextEditor::IndentationForBlock indentationForBlocks(
+        const QVector<QTextBlock> &blocks, const TextEditor::TabSettings & /*tabSettings*/) override;
+    void indent(const QTextCursor &cursor,
+                const QChar &typedChar,
+                const TextEditor::TabSettings & /*tabSettings*/) override;
+
+    void reindent(const QTextCursor &cursor,
+                  const TextEditor::TabSettings & /*tabSettings*/) override;
+
+    TextEditor::Replacements format(const QTextCursor &cursor,
+                                    const TextEditor::TabSettings & /*tabSettings*/) override;
+
+    void indentBlock(const QTextBlock &block,
+                     const QChar &typedChar,
+                     const TextEditor::TabSettings & /*tabSettings*/) override;
+
+    int indentFor(const QTextBlock &block, const TextEditor::TabSettings & /*tabSettings*/) override;
+
+    bool isElectricCharacter(const QChar &ch) const override;
+
+protected:
+    virtual clang::format::FormatStyle styleForFile() const;
+
+private:
+    void indent(const QTextCursor &cursor, const QChar &typedChar);
+    void indentBlock(const QTextBlock &block, const QChar &typedChar);
+    int indentFor(const QTextBlock &block);
+    TextEditor::Replacements replacements(QByteArray buffer,
+                                          int utf8Offset,
+                                          int utf8Length,
+                                          const QTextBlock &block,
+                                          const QChar &typedChar = QChar::Null,
+                                          bool onlyIndention = true,
+                                          bool secondTry = false) const;
+};
+
+} // namespace ClangFormat
diff --git a/src/plugins/clangformat/clangformatindenter.cpp b/src/plugins/clangformat/clangformatindenter.cpp
index e5d14392e4..b52b4e9ce6 100644
--- a/src/plugins/clangformat/clangformatindenter.cpp
+++ b/src/plugins/clangformat/clangformatindenter.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2018 The Qt Company Ltd.
+** Copyright (C) 2019 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of Qt Creator.
@@ -24,479 +24,26 @@
 ****************************************************************************/
 
 #include "clangformatindenter.h"
-
 #include "clangformatutils.h"
 
-#include <clang/Format/Format.h>
-#include <clang/Tooling/Core/Replacement.h>
-
-#include <cpptools/cppmodelmanager.h>
-#include <texteditor/textdocument.h>
-#include <texteditor/texteditor.h>
-
-#include <utils/hostosinfo.h>
-#include <utils/textutils.h>
-#include <utils/qtcassert.h>
-
-#include <llvm/Config/llvm-config.h>
-
-#include <QDir>
-#include <QFileInfo>
-#include <QTextBlock>
-
-#include <fstream>
-
-using ClangReplacement = clang::tooling::Replacement;
-using ClangReplacements = clang::tooling::Replacements;
-using QtReplacement = TextEditor::Replacement;
-using QtReplacements = TextEditor::Replacements;
+#include <texteditor/tabsettings.h>
 
 using namespace clang;
 using namespace format;
-using namespace llvm;
-using namespace tooling;
-using namespace ProjectExplorer;
 using namespace TextEditor;
 
 namespace ClangFormat {
 
-namespace {
-
-void adjustFormatStyleForLineBreak(format::FormatStyle &style)
-{
-    style.DisableFormat = false;
-    style.ColumnLimit = 0;
-#ifdef KEEP_LINE_BREAKS_FOR_NON_EMPTY_LINES_BACKPORTED
-    style.KeepLineBreaksForNonEmptyLines = true;
-#endif
-    style.MaxEmptyLinesToKeep = 2;
-    style.SortIncludes = false;
-    style.SortUsingDeclarations = false;
-}
-
-StringRef clearExtraNewline(StringRef text)
-{
-    while (text.startswith("\n\n"))
-        text = text.drop_front();
-    return text;
-}
-
-ClangReplacements filteredReplacements(const ClangReplacements &replacements,
-                                       int offset,
-                                       int extraOffsetToAdd,
-                                       bool onlyIndention)
-{
-    ClangReplacements filtered;
-    for (const ClangReplacement &replacement : replacements) {
-        int replacementOffset = static_cast<int>(replacement.getOffset());
-        if (onlyIndention && replacementOffset != offset - 1)
-            continue;
-
-        if (replacementOffset + 1 >= offset)
-            replacementOffset += extraOffsetToAdd;
-
-        StringRef text = onlyIndention ? clearExtraNewline(replacement.getReplacementText())
-                                       : replacement.getReplacementText();
-
-        Error error = filtered.add(ClangReplacement(replacement.getFilePath(),
-                                                    static_cast<unsigned int>(replacementOffset),
-                                                    replacement.getLength(),
-                                                    text));
-        // Throws if error is not checked.
-        if (error)
-            break;
-    }
-    return filtered;
-}
-
-void trimFirstNonEmptyBlock(const QTextBlock &currentBlock)
-{
-    QTextBlock prevBlock = currentBlock.previous();
-    while (prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty())
-        prevBlock = prevBlock.previous();
-
-    if (prevBlock.text().trimmed().isEmpty())
-        return;
-
-    const QString initialText = prevBlock.text();
-    if (!initialText.at(initialText.size() - 1).isSpace())
-        return;
-
-    auto lastNonSpace = std::find_if_not(initialText.rbegin(),
-                                         initialText.rend(),
-                                         [](const QChar &letter) {
-        return letter.isSpace();
-    });
-    const int extraSpaceCount = static_cast<int>(std::distance(initialText.rbegin(), lastNonSpace));
-
-    QTextCursor cursor(prevBlock);
-    cursor.beginEditBlock();
-    cursor.movePosition(QTextCursor::Right, QTextCursor::MoveAnchor,
-                        initialText.size() - extraSpaceCount);
-    cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, extraSpaceCount);
-    cursor.removeSelectedText();
-    cursor.endEditBlock();
-}
-
-void trimCurrentBlock(const QTextBlock &currentBlock)
-{
-    if (currentBlock.text().trimmed().isEmpty()) {
-        // Clear the block containing only spaces
-        QTextCursor cursor(currentBlock);
-        cursor.beginEditBlock();
-        cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
-        cursor.removeSelectedText();
-        cursor.endEditBlock();
-    }
-}
-
-// Returns the total langth of previous lines with pure whitespace.
-int previousEmptyLinesLength(const QTextBlock &currentBlock)
-{
-    int length{0};
-    QTextBlock prevBlock = currentBlock.previous();
-    while (prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty()) {
-        length += prevBlock.text().length() + 1;
-        prevBlock = prevBlock.previous();
-    }
-
-    return length;
-}
-
-void modifyToIndentEmptyLines(
-    QByteArray &buffer, int offset, int &length, const QTextBlock &block, bool secondTry)
-{
-    const QString blockText = block.text().trimmed();
-    const bool closingParenBlock = blockText.startsWith(')');
-    if (blockText.isEmpty() || closingParenBlock) {
-        //This extra text works for the most cases.
-        QByteArray dummyText("a;");
-
-        // Search for previous character
-        QTextBlock prevBlock = block.previous();
-        bool prevBlockIsEmpty = prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty();
-        while (prevBlockIsEmpty) {
-            prevBlock = prevBlock.previous();
-            prevBlockIsEmpty = prevBlock.position() > 0 && prevBlock.text().trimmed().isEmpty();
-        }
-        if (prevBlock.text().endsWith(','))
-            dummyText = "int a";
-
-        if (closingParenBlock) {
-            if (prevBlock.text().endsWith(','))
-                dummyText = "int a";
-            else
-                dummyText = "&& a";
-        }
-
-        length += dummyText.length();
-        buffer.insert(offset, dummyText);
-    }
+ClangFormatIndenter::ClangFormatIndenter(QTextDocument *doc)
+    : ClangFormatBaseIndenter(doc)
+{}
 
-    if (secondTry) {
-        int nextLinePos = buffer.indexOf('\n', offset);
-        if (nextLinePos > 0) {
-            // If first try was not successful try to put ')' in the end of the line to close possibly
-            // unclosed parentheses.
-            // TODO: Does it help to add different endings depending on the context?
-            buffer.insert(nextLinePos, ')');
-            length += 1;
-        }
-    }
-}
-
-static const int kMaxLinesFromCurrentBlock = 200;
-
-Utils::LineColumn utf16LineColumn(const QTextBlock &block,
-                                  int blockOffsetUtf8,
-                                  const QByteArray &utf8Buffer,
-                                  int utf8Offset)
-{
-    // If lastIndexOf('\n') returns -1 then we are fine to add 1 and get 0 offset.
-    const int lineStartUtf8Offset = utf8Buffer.lastIndexOf('\n', utf8Offset - 1) + 1;
-    int line = block.blockNumber() + 1; // Init with the line corresponding the block.
-
-    if (utf8Offset < blockOffsetUtf8) {
-        line -= static_cast<int>(std::count(utf8Buffer.begin() + lineStartUtf8Offset,
-                                            utf8Buffer.begin() + blockOffsetUtf8,
-                                            '\n'));
-    } else {
-        line += static_cast<int>(std::count(utf8Buffer.begin() + blockOffsetUtf8,
-                                            utf8Buffer.begin() + lineStartUtf8Offset,
-                                            '\n'));
-    }
-
-    const QByteArray lineText = utf8Buffer.mid(lineStartUtf8Offset,
-                                               utf8Offset - lineStartUtf8Offset);
-    return Utils::LineColumn(line, QString::fromUtf8(lineText).size() + 1);
-}
-
-QtReplacements utf16Replacements(const QTextBlock &block,
-                                 int blockOffsetUtf8,
-                                 const QByteArray &utf8Buffer,
-                                 const ClangReplacements &replacements)
+FormatStyle ClangFormatIndenter::styleForFile() const
 {
-    QtReplacements convertedReplacements;
-    convertedReplacements.reserve(replacements.size());
-    for (const ClangReplacement &replacement : replacements) {
-        const Utils::LineColumn lineColUtf16 = utf16LineColumn(block,
-                                                               blockOffsetUtf8,
-                                                               utf8Buffer,
-                                                               static_cast<int>(
-                                                                   replacement.getOffset()));
-        if (!lineColUtf16.isValid())
-            continue;
-        const int utf16Offset = Utils::Text::positionInText(block.document(),
-                                                            lineColUtf16.line,
-                                                            lineColUtf16.column);
-        const int utf16Length = QString::fromUtf8(
-                                    utf8Buffer.mid(static_cast<int>(replacement.getOffset()),
-                                                   static_cast<int>(replacement.getLength())))
-                                    .size();
-        convertedReplacements.emplace_back(utf16Offset,
-                                           utf16Length,
-                                           QString::fromStdString(replacement.getReplacementText()));
-    }
-
-    return convertedReplacements;
-}
-
-QtReplacements replacements(const Utils::FileName &fileName,
-                            QByteArray buffer,
-                            int utf8Offset,
-                            int utf8Length,
-                            const QTextBlock &block,
-                            const QChar &typedChar = QChar::Null,
-                            bool onlyIndention = true,
-                            bool secondTry = false)
-{
-    FormatStyle style = styleForFile(fileName);
-
-    int originalOffsetUtf8 = utf8Offset;
-    int originalLengthUtf8 = utf8Length;
-    QByteArray originalBuffer = buffer;
-
-    int extraOffset = 0;
-    if (onlyIndention) {
-        if (block.blockNumber() > kMaxLinesFromCurrentBlock) {
-            extraOffset = Utils::Text::utf8NthLineOffset(
-                block.document(), buffer, block.blockNumber() - kMaxLinesFromCurrentBlock);
-        }
-        int endOffset = Utils::Text::utf8NthLineOffset(
-            block.document(), buffer, block.blockNumber() + kMaxLinesFromCurrentBlock);
-        if (endOffset == -1)
-            endOffset = buffer.size();
-
-        buffer = buffer.mid(extraOffset, endOffset - extraOffset);
-        utf8Offset -= extraOffset;
-
-        const int emptySpaceLength = previousEmptyLinesLength(block);
-        utf8Offset -= emptySpaceLength;
-        buffer.remove(utf8Offset, emptySpaceLength);
-
-        extraOffset += emptySpaceLength;
-
-        adjustFormatStyleForLineBreak(style);
-        if (typedChar == QChar::Null)
-            modifyToIndentEmptyLines(buffer, utf8Offset, utf8Length, block, secondTry);
-    }
-
-    std::vector<Range> ranges{{static_cast<unsigned int>(utf8Offset),
-                               static_cast<unsigned int>(utf8Length)}};
-    FormattingAttemptStatus status;
-
-    ClangReplacements clangReplacements = reformat(style,
-                                                   buffer.data(),
-                                                   ranges,
-                                                   fileName.toString().toStdString(),
-                                                   &status);
-
-    if (!status.FormatComplete)
-        QtReplacements();
-
-    const ClangReplacements filtered = filteredReplacements(clangReplacements,
-                                                            utf8Offset,
-                                                            extraOffset,
-                                                            onlyIndention);
-
-    const bool canTryAgain = onlyIndention && typedChar == QChar::Null && !secondTry;
-    if (canTryAgain && filtered.empty()) {
-        return replacements(fileName,
-                            originalBuffer,
-                            originalOffsetUtf8,
-                            originalLengthUtf8,
-                            block,
-                            typedChar,
-                            onlyIndention,
-                            true);
-    }
-
-    return utf16Replacements(block, originalOffsetUtf8, originalBuffer, filtered);
-}
-
-void applyReplacements(const QTextBlock &block, const QtReplacements &replacements)
-{
-    if (replacements.empty())
-        return;
-
-    int fullOffsetShift = 0;
-    QTextCursor editCursor(block);
-    for (const QtReplacement &replacement : replacements) {
-        editCursor.beginEditBlock();
-        editCursor.setPosition(replacement.offset + fullOffsetShift);
-        editCursor.movePosition(QTextCursor::NextCharacter,
-                                QTextCursor::KeepAnchor,
-                                replacement.length);
-        editCursor.removeSelectedText();
-        editCursor.insertText(replacement.text);
-        editCursor.endEditBlock();
-        fullOffsetShift += replacement.text.length() - replacement.length;
-    }
-}
-
-QString selectedLines(QTextDocument *doc, const QTextBlock &startBlock, const QTextBlock &endBlock)
-{
-    QString text = Utils::Text::textAt(
-                QTextCursor(doc),
-                startBlock.position(),
-                std::max(0, endBlock.position() + endBlock.length() - startBlock.position() - 1));
-    while (!text.isEmpty() && text.rbegin()->isSpace())
-        text.chop(1);
-    return text;
-}
-
-} // anonymous namespace
-
-bool ClangFormatIndenter::isElectricCharacter(const QChar &ch) const
-{
-    switch (ch.toLatin1()) {
-    case '{':
-    case '}':
-    case ':':
-    case '#':
-    case '<':
-    case '>':
-    case ';':
-    case '(':
-    case ')':
-    case ',':
-    case '.':
-        return true;
-    }
-    return false;
-}
-
-void ClangFormatIndenter::indent(QTextDocument *doc,
-                                 const QTextCursor &cursor,
-                                 const QChar &typedChar,
-                                 const TabSettings &tabSettings,
-                                 bool /*autoTriggered*/)
-{
-    if (cursor.hasSelection()) {
-        // Calling currentBlock.next() might be unsafe because we change the document.
-        // Let's operate with block numbers instead.
-        const int startNumber = doc->findBlock(cursor.selectionStart()).blockNumber();
-        const int endNumber = doc->findBlock(cursor.selectionEnd()).blockNumber();
-        for (int currentBlockNumber = startNumber; currentBlockNumber <= endNumber;
-             ++currentBlockNumber) {
-            const QTextBlock currentBlock = doc->findBlockByNumber(currentBlockNumber);
-            if (currentBlock.isValid()) {
-                const int blocksAmount = doc->blockCount();
-                indentBlock(doc, currentBlock, typedChar, tabSettings);
-                QTC_CHECK(blocksAmount == doc->blockCount()
-                          && "ClangFormat plugin indentation changed the amount of blocks.");
-            }
-        }
-    } else {
-        indentBlock(doc, cursor.block(), typedChar, tabSettings);
-    }
-}
-
-QtReplacements ClangFormatIndenter::format(QTextDocument *doc,
-                                           const Utils::FileName &fileName,
-                                           const QTextCursor &cursor,
-                                           const TextEditor::TabSettings & /*tabSettings*/)
-{
-    int utf8Offset;
-    int utf8Length;
-    const QByteArray buffer = doc->toPlainText().toUtf8();
-    QTextBlock block = cursor.block();
-    if (cursor.hasSelection()) {
-        block = doc->findBlock(cursor.selectionStart());
-        const QTextBlock end = doc->findBlock(cursor.selectionEnd());
-        utf8Offset = Utils::Text::utf8NthLineOffset(doc, buffer, block.blockNumber() + 1);
-        QTC_ASSERT(utf8Offset >= 0, return QtReplacements(););
-        utf8Length = selectedLines(doc, block, end).toUtf8().size();
-
-    } else {
-        const QTextBlock block = cursor.block();
-        utf8Offset = Utils::Text::utf8NthLineOffset(doc, buffer, block.blockNumber() + 1);
-        QTC_ASSERT(utf8Offset >= 0, return QtReplacements(););
-        utf8Length = block.text().toUtf8().size();
-    }
-
-    const QtReplacements toReplace
-        = replacements(fileName, buffer, utf8Offset, utf8Length, block, QChar::Null, false);
-    applyReplacements(block, toReplace);
-
-    return toReplace;
-}
-
-void ClangFormatIndenter::reindent(QTextDocument *doc,
-                                   const QTextCursor &cursor,
-                                   const TabSettings &tabSettings)
-{
-    indent(doc, cursor, QChar::Null, tabSettings);
-}
-
-void ClangFormatIndenter::indentBlock(QTextDocument *doc,
-                                      const QTextBlock &block,
-                                      const QChar &typedChar,
-                                      const TabSettings &tabSettings)
-{
-    Q_UNUSED(tabSettings);
-
-    TextEditorWidget *editor = TextEditorWidget::currentTextEditorWidget();
-    if (!editor)
-        return;
-
-    const Utils::FileName fileName = editor->textDocument()->filePath();
-    trimFirstNonEmptyBlock(block);
-    trimCurrentBlock(block);
-    const QByteArray buffer = doc->toPlainText().toUtf8();
-    const int utf8Offset = Utils::Text::utf8NthLineOffset(doc, buffer, block.blockNumber() + 1);
-    QTC_ASSERT(utf8Offset >= 0, return;);
-
-    applyReplacements(block,
-                      replacements(fileName, buffer, utf8Offset, 0, block, typedChar));
-}
-
-int ClangFormatIndenter::indentFor(const QTextBlock &block, const TextEditor::TabSettings &)
-{
-    TextEditorWidget *editor = TextEditorWidget::currentTextEditorWidget();
-    if (!editor)
-        return -1;
-
-    const Utils::FileName fileName = editor->textDocument()->filePath();
-    trimFirstNonEmptyBlock(block);
-    trimCurrentBlock(block);
-    const QTextDocument *doc = block.document();
-    const QByteArray buffer = doc->toPlainText().toUtf8();
-    const int utf8Offset = Utils::Text::utf8NthLineOffset(doc, buffer, block.blockNumber() + 1);
-    QTC_ASSERT(utf8Offset >= 0, return 0;);
-
-    const QtReplacements toReplace = replacements(fileName, buffer, utf8Offset, 0, block);
-
-    if (toReplace.empty())
-        return -1;
-
-    const QtReplacement &replacement = toReplace.front();
-    int afterLineBreak = replacement.text.lastIndexOf('\n');
-    afterLineBreak = (afterLineBreak < 0) ? 0 : afterLineBreak + 1;
-    return static_cast<int>(replacement.text.size() - afterLineBreak);
+    return ClangFormat::styleForFile(m_fileName);
 }
 
-TabSettings ClangFormatIndenter::tabSettings() const
+Utils::optional<TabSettings> ClangFormatIndenter::tabSettings() const
 {
     FormatStyle style = currentProjectStyle();
     TabSettings tabSettings;
diff --git a/src/plugins/clangformat/clangformatindenter.h b/src/plugins/clangformat/clangformatindenter.h
index a12ffaee44..5631e32db1 100644
--- a/src/plugins/clangformat/clangformatindenter.h
+++ b/src/plugins/clangformat/clangformatindenter.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2018 The Qt Company Ltd.
+** Copyright (C) 2019 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of Qt Creator.
@@ -25,35 +25,20 @@
 
 #pragma once
 
-#include <texteditor/indenter.h>
+#include "clangformatbaseindenter.h"
+
+#include <texteditor/tabsettings.h>
 
 namespace ClangFormat {
 
-class ClangFormatIndenter final : public TextEditor::Indenter
+class ClangFormatIndenter final : public ClangFormatBaseIndenter
 {
 public:
-    void indent(QTextDocument *doc,
-                const QTextCursor &cursor,
-                const QChar &typedChar,
-                const TextEditor::TabSettings &tabSettings,
-                bool autoTriggered = true) override;
-    void reindent(QTextDocument *doc,
-                  const QTextCursor &cursor,
-                  const TextEditor::TabSettings &tabSettings) override;
-    TextEditor::Replacements format(QTextDocument *doc,
-                                    const Utils::FileName &fileName,
-                                    const QTextCursor &cursor,
-                                    const TextEditor::TabSettings &tabSettings) override;
-    void indentBlock(QTextDocument *doc,
-                     const QTextBlock &block,
-                     const QChar &typedChar,
-                     const TextEditor::TabSettings &tabSettings) override;
-    int indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings) override;
-
-    bool isElectricCharacter(const QChar &ch) const override;
+    ClangFormatIndenter(QTextDocument *doc);
+    Utils::optional<TextEditor::TabSettings> tabSettings() const override;
 
-    bool hasTabSettings() const override { return true; }
-    TextEditor::TabSettings tabSettings() const override;
+private:
+    clang::format::FormatStyle styleForFile() const override;
 };
 
 } // namespace ClangFormat
diff --git a/src/plugins/clangformat/clangformatplugin.cpp b/src/plugins/clangformat/clangformatplugin.cpp
index d5882aab58..2d848d9501 100644
--- a/src/plugins/clangformat/clangformatplugin.cpp
+++ b/src/plugins/clangformat/clangformatplugin.cpp
@@ -84,9 +84,9 @@ public:
         return nullptr;
     }
 
-    TextEditor::Indenter *createIndenter() const override
+    TextEditor::Indenter *createIndenter(QTextDocument *doc) const override
     {
-        return new ClangFormatIndenter();
+        return new ClangFormatIndenter(doc);
     }
 };
 
diff --git a/src/plugins/clangtools/clangfixitsrefactoringchanges.cpp b/src/plugins/clangtools/clangfixitsrefactoringchanges.cpp
index feff3a8e2c..88b17fb42a 100644
--- a/src/plugins/clangtools/clangfixitsrefactoringchanges.cpp
+++ b/src/plugins/clangtools/clangfixitsrefactoringchanges.cpp
@@ -32,6 +32,7 @@
 
 #include <texteditor/icodestylepreferencesfactory.h>
 #include <texteditor/indenter.h>
+#include <texteditor/tabsettings.h>
 #include <texteditor/texteditorsettings.h>
 
 #include <QDebug>
@@ -83,7 +84,6 @@ bool FixitsRefactoringFile::apply()
 
     ICodeStylePreferencesFactory *factory = TextEditorSettings::codeStyleFactory(
         CppTools::Constants::CPP_SETTINGS_ID);
-    std::unique_ptr<TextEditor::Indenter> indenter(factory->createIndenter());
 
     const TextEditor::TabSettings tabSettings
             = CppTools::CppCodeStyleSettings::currentProjectTabSettings();
@@ -103,6 +103,9 @@ bool FixitsRefactoringFile::apply()
 
             // Apply
             QTextDocument *doc = document(op.fileName);
+            std::unique_ptr<TextEditor::Indenter> indenter(factory->createIndenter(doc));
+            indenter->setFileName(Utils::FileName::fromString(op.fileName));
+
             QTextCursor cursor(doc);
             cursor.setPosition(op.pos);
             cursor.setPosition(op.pos + op.length, QTextCursor::KeepAnchor);
@@ -139,10 +142,7 @@ void FixitsRefactoringFile::tryToFormat(TextEditor::Indenter &indenter,
     cursor.movePosition(QTextCursor::Right,
                         QTextCursor::KeepAnchor,
                         op.text.length());
-    const Replacements replacements = indenter.format(doc,
-                                                      Utils::FileName::fromString(op.fileName),
-                                                      cursor,
-                                                      tabSettings);
+    const Replacements replacements = indenter.format(cursor, tabSettings);
     cursor.endEditBlock();
 
     if (replacements.empty())
diff --git a/src/plugins/clangtools/clangfixitsrefactoringchanges.h b/src/plugins/clangtools/clangfixitsrefactoringchanges.h
index 63aea839b1..c1fcf38c09 100644
--- a/src/plugins/clangtools/clangfixitsrefactoringchanges.h
+++ b/src/plugins/clangtools/clangfixitsrefactoringchanges.h
@@ -25,6 +25,8 @@
 
 #pragma once
 
+#include <texteditor/indenter.h>
+
 #include <utils/changeset.h>
 #include <utils/textfileformat.h>
 
@@ -32,13 +34,6 @@
 #include <QTextDocument>
 #include <QVector>
 
-namespace TextEditor {
-class Indenter;
-class Replacement;
-using Replacements = std::vector<Replacement>;
-class TabSettings;
-}
-
 namespace ClangTools {
 namespace Internal {
 
diff --git a/src/plugins/cmakeprojectmanager/cmakeeditor.cpp b/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
index 122569616e..c5c0fe5b74 100644
--- a/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
@@ -229,7 +229,7 @@ CMakeEditorFactory::CMakeEditorFactory()
     setEditorCreator([]() { return new CMakeEditor; });
     setEditorWidgetCreator([]() { return new CMakeEditorWidget; });
     setDocumentCreator(createCMakeDocument);
-    setIndenterCreator([]() { return new CMakeIndenter; });
+    setIndenterCreator([](QTextDocument *doc) { return new CMakeIndenter(doc); });
     setUseGenericHighlighter(true);
     setCommentDefinition(Utils::CommentDefinition::HashStyle);
     setCodeFoldingSupported(true);
diff --git a/src/plugins/cmakeprojectmanager/cmakeindenter.cpp b/src/plugins/cmakeprojectmanager/cmakeindenter.cpp
index 882f0277a6..3ba47a634d 100644
--- a/src/plugins/cmakeprojectmanager/cmakeindenter.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeindenter.cpp
@@ -34,6 +34,10 @@
 namespace CMakeProjectManager {
 namespace Internal {
 
+CMakeIndenter::CMakeIndenter(QTextDocument *doc)
+    : TextEditor::TextIndenter(doc)
+{}
+
 bool CMakeIndenter::isElectricCharacter(const QChar &ch) const
 {
     return ch == QLatin1Char('(') || ch == QLatin1Char(')');
@@ -98,7 +102,8 @@ static int paranthesesLevel(const QString &line)
         return -1;
 }
 
-int CMakeIndenter::indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings)
+int CMakeIndenter::indentFor(const QTextBlock &block,
+                             const TextEditor::TabSettings &tabSettings)
 {
     QTextBlock previousBlock = block.previous();
     // find the next previous block that is non-empty (contains non-whitespace characters)
diff --git a/src/plugins/cmakeprojectmanager/cmakeindenter.h b/src/plugins/cmakeprojectmanager/cmakeindenter.h
index a47bdcced5..f7d80b0e0b 100644
--- a/src/plugins/cmakeprojectmanager/cmakeindenter.h
+++ b/src/plugins/cmakeprojectmanager/cmakeindenter.h
@@ -27,17 +27,19 @@
 
 #include "cmake_global.h"
 
-#include <texteditor/indenter.h>
+#include <texteditor/textindenter.h>
 
 namespace CMakeProjectManager {
 namespace Internal {
 
-class CMAKE_EXPORT CMakeIndenter : public TextEditor::Indenter
+class CMAKE_EXPORT CMakeIndenter : public TextEditor::TextIndenter
 {
 public:
+    explicit CMakeIndenter(QTextDocument *doc);
     bool isElectricCharacter(const QChar &ch) const override;
 
-    int indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings) override;
+    int indentFor(const QTextBlock &block,
+                  const TextEditor::TabSettings &tabSettings) override;
 };
 
 } // namespace Internal
diff --git a/src/plugins/cppeditor/cppeditor.cpp b/src/plugins/cppeditor/cppeditor.cpp
index a2b622a2f9..e7064d3165 100644
--- a/src/plugins/cppeditor/cppeditor.cpp
+++ b/src/plugins/cppeditor/cppeditor.cpp
@@ -42,7 +42,8 @@ CppEditor::CppEditor()
 void CppEditor::decorateEditor(TextEditor::TextEditorWidget *editor)
 {
     editor->textDocument()->setSyntaxHighlighter(new CppHighlighter);
-    editor->textDocument()->setIndenter(new CppTools::CppQtStyleIndenter);
+    editor->textDocument()->setIndenter(
+        new CppTools::CppQtStyleIndenter(editor->textDocument()->document()));
     editor->setAutoCompleter(new CppAutoCompleter);
 }
 
diff --git a/src/plugins/cppeditor/cppeditordocument.cpp b/src/plugins/cppeditor/cppeditordocument.cpp
index 68e3e6547e..c8951c12eb 100644
--- a/src/plugins/cppeditor/cppeditordocument.cpp
+++ b/src/plugins/cppeditor/cppeditordocument.cpp
@@ -111,7 +111,7 @@ CppEditorDocument::CppEditorDocument()
 
     ICodeStylePreferencesFactory *factory
         = TextEditorSettings::codeStyleFactory(CppTools::Constants::CPP_SETTINGS_ID);
-    setIndenter(factory->createIndenter());
+    setIndenter(factory->createIndenter(document()));
 
     connect(this, &TextEditor::TextDocument::tabSettingsChanged,
             this, &CppEditorDocument::invalidateFormatterCache);
@@ -243,6 +243,7 @@ void CppEditorDocument::onFilePathChanged(const Utils::FileName &oldPath,
     Q_UNUSED(oldPath);
 
     if (!newPath.isEmpty()) {
+        indenter()->setFileName(newPath);
         setMimeType(Utils::mimeTypeForFile(newPath.toFileInfo()).name());
 
         connect(this, &Core::IDocument::contentsChanged,
@@ -443,9 +444,7 @@ CppTools::BaseEditorDocumentProcessor *CppEditorDocument::processor()
 
 TextEditor::TabSettings CppEditorDocument::tabSettings() const
 {
-    return indenter()->hasTabSettings()
-            ? indenter()->tabSettings()
-            : TextEditor::TextDocument::tabSettings();
+    return indenter()->tabSettings().value_or(TextEditor::TextDocument::tabSettings());
 }
 
 } // namespace Internal
diff --git a/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp b/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp
index 00da046edc..4c0ca8d9a5 100644
--- a/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp
+++ b/src/plugins/cpptools/cppcodestylepreferencesfactory.cpp
@@ -111,9 +111,9 @@ QWidget *CppCodeStylePreferencesFactory::createEditor(TextEditor::ICodeStylePref
     return widget;
 }
 
-TextEditor::Indenter *CppCodeStylePreferencesFactory::createIndenter() const
+TextEditor::Indenter *CppCodeStylePreferencesFactory::createIndenter(QTextDocument *doc) const
 {
-    return new CppQtStyleIndenter();
+    return new CppQtStyleIndenter(doc);
 }
 
 QString CppCodeStylePreferencesFactory::snippetProviderGroupId() const
diff --git a/src/plugins/cpptools/cppcodestylepreferencesfactory.h b/src/plugins/cpptools/cppcodestylepreferencesfactory.h
index 233022a31a..eefe3adce2 100644
--- a/src/plugins/cpptools/cppcodestylepreferencesfactory.h
+++ b/src/plugins/cpptools/cppcodestylepreferencesfactory.h
@@ -41,7 +41,7 @@ public:
     TextEditor::ICodeStylePreferences *createCodeStyle() const override;
     QWidget *createEditor(TextEditor::ICodeStylePreferences *settings,
                           QWidget *parent) const override;
-    TextEditor::Indenter *createIndenter() const override;
+    TextEditor::Indenter *createIndenter(QTextDocument *doc) const override;
     QString snippetProviderGroupId() const override;
     QString previewText() const override;
 };
diff --git a/src/plugins/cpptools/cppcodestylesettingspage.cpp b/src/plugins/cpptools/cppcodestylesettingspage.cpp
index c80537db9b..f803516358 100644
--- a/src/plugins/cpptools/cppcodestylesettingspage.cpp
+++ b/src/plugins/cpptools/cppcodestylesettingspage.cpp
@@ -481,7 +481,7 @@ void CppCodeStylePreferencesWidget::updatePreview()
         QTextCursor tc = preview->textCursor();
         tc.beginEditBlock();
         while (block.isValid()) {
-            preview->textDocument()->indenter()->indentBlock(doc, block, QChar::Null, ts);
+            preview->textDocument()->indenter()->indentBlock(block, QChar::Null, ts);
 
             block = block.next();
         }
diff --git a/src/plugins/cpptools/cppmodelmanager.cpp b/src/plugins/cpptools/cppmodelmanager.cpp
index 45ab82efec..f5c257b6d2 100644
--- a/src/plugins/cpptools/cppmodelmanager.cpp
+++ b/src/plugins/cpptools/cppmodelmanager.cpp
@@ -61,7 +61,6 @@
 #include <projectexplorer/projectexplorer.h>
 #include <projectexplorer/projectmacro.h>
 #include <projectexplorer/session.h>
-#include <texteditor/indenter.h>
 #include <utils/fileutils.h>
 #include <utils/qtcassert.h>
 
diff --git a/src/plugins/cpptools/cppmodelmanager.h b/src/plugins/cpptools/cppmodelmanager.h
index 0eac5abf87..302e447ade 100644
--- a/src/plugins/cpptools/cppmodelmanager.h
+++ b/src/plugins/cpptools/cppmodelmanager.h
@@ -49,7 +49,6 @@ namespace CPlusPlus { class LookupContext; }
 namespace ProjectExplorer { class Project; }
 namespace TextEditor {
 class BaseHoverHandler;
-class Indenter;
 class TextDocument;
 } // namespace TextEditor
 
diff --git a/src/plugins/cpptools/cppqtstyleindenter.cpp b/src/plugins/cpptools/cppqtstyleindenter.cpp
index 54cb3cc9ed..97ffd666e3 100644
--- a/src/plugins/cpptools/cppqtstyleindenter.cpp
+++ b/src/plugins/cpptools/cppqtstyleindenter.cpp
@@ -36,7 +36,8 @@
 
 using namespace CppTools;
 
-CppQtStyleIndenter::CppQtStyleIndenter()
+CppQtStyleIndenter::CppQtStyleIndenter(QTextDocument *doc)
+    : TextEditor::TextIndenter(doc)
 {
     // Just for safety. setCodeStylePreferences should be called when the editor the
     // indenter belongs to gets initialized.
@@ -67,13 +68,10 @@ static bool isElectricInLine(const QChar ch, const QString &text)
         return text.contains(QLatin1String("break"));
     case ':':
         // switch cases and access declarations should be reindented
-        if (text.contains(QLatin1String("case"))
-                || text.contains(QLatin1String("default"))
-                || text.contains(QLatin1String("public"))
-                || text.contains(QLatin1String("private"))
-                || text.contains(QLatin1String("protected"))
-                || text.contains(QLatin1String("signals"))
-                || text.contains(QLatin1String("Q_SIGNALS"))) {
+        if (text.contains(QLatin1String("case")) || text.contains(QLatin1String("default"))
+            || text.contains(QLatin1String("public")) || text.contains(QLatin1String("private"))
+            || text.contains(QLatin1String("protected")) || text.contains(QLatin1String("signals"))
+            || text.contains(QLatin1String("Q_SIGNALS"))) {
             return true;
         }
 
@@ -93,13 +91,10 @@ static bool isElectricInLine(const QChar ch, const QString &text)
     return true;
 }
 
-void CppQtStyleIndenter::indentBlock(QTextDocument *doc,
-                                     const QTextBlock &block,
+void CppQtStyleIndenter::indentBlock(const QTextBlock &block,
                                      const QChar &typedChar,
                                      const TextEditor::TabSettings &tabSettings)
 {
-    Q_UNUSED(doc)
-
     QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
 
     codeFormatter.updateStateUntil(block);
@@ -124,15 +119,13 @@ void CppQtStyleIndenter::indentBlock(QTextDocument *doc,
     tabSettings.indentLine(block, indent + padding, padding);
 }
 
-void CppQtStyleIndenter::indent(QTextDocument *doc,
-                                const QTextCursor &cursor,
+void CppQtStyleIndenter::indent(const QTextCursor &cursor,
                                 const QChar &typedChar,
-                                const TextEditor::TabSettings &tabSettings,
-                                bool /*autoTriggered*/)
+                                const TextEditor::TabSettings &tabSettings)
 {
     if (cursor.hasSelection()) {
-        QTextBlock block = doc->findBlock(cursor.selectionStart());
-        const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
+        QTextBlock block = m_doc->findBlock(cursor.selectionStart());
+        const QTextBlock end = m_doc->findBlock(cursor.selectionEnd()).next();
 
         QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
         codeFormatter.updateStateUntil(block);
@@ -149,7 +142,7 @@ void CppQtStyleIndenter::indent(QTextDocument *doc,
         } while (block.isValid() && block != end);
         tc.endEditBlock();
     } else {
-        indentBlock(doc, cursor.block(), typedChar, tabSettings);
+        indentBlock(cursor.block(), typedChar, tabSettings);
     }
 }
 
@@ -160,13 +153,14 @@ void CppQtStyleIndenter::setCodeStylePreferences(TextEditor::ICodeStylePreferenc
         m_cppCodeStylePreferences = cppCodeStylePreferences;
 }
 
-void CppQtStyleIndenter::invalidateCache(QTextDocument *doc)
+void CppQtStyleIndenter::invalidateCache()
 {
     QtStyleCodeFormatter formatter;
-    formatter.invalidateCache(doc);
+    formatter.invalidateCache(m_doc);
 }
 
-int CppQtStyleIndenter::indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings)
+int CppQtStyleIndenter::indentFor(const QTextBlock &block,
+                                  const TextEditor::TabSettings &tabSettings)
 {
     QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
 
@@ -185,9 +179,8 @@ CppCodeStyleSettings CppQtStyleIndenter::codeStyleSettings() const
     return CppCodeStyleSettings();
 }
 
-TextEditor::IndentationForBlock
-CppQtStyleIndenter::indentationForBlocks(const QVector<QTextBlock> &blocks,
-                                         const TextEditor::TabSettings &tabSettings)
+TextEditor::IndentationForBlock CppQtStyleIndenter::indentationForBlocks(
+    const QVector<QTextBlock> &blocks, const TextEditor::TabSettings &tabSettings)
 {
     QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
 
diff --git a/src/plugins/cpptools/cppqtstyleindenter.h b/src/plugins/cpptools/cppqtstyleindenter.h
index 05a36c883e..3b8fb07168 100644
--- a/src/plugins/cpptools/cppqtstyleindenter.h
+++ b/src/plugins/cpptools/cppqtstyleindenter.h
@@ -27,10 +27,9 @@
 
 #include "cpptools_global.h"
 
-#include <texteditor/indenter.h>
+#include <texteditor/textindenter.h>
 
-namespace TextEditor
-{
+namespace TextEditor {
 class ICodeStylePreferences;
 }
 
@@ -38,32 +37,30 @@ namespace CppTools {
 class CppCodeStyleSettings;
 class CppCodeStylePreferences;
 
-class CPPTOOLS_EXPORT CppQtStyleIndenter : public TextEditor::Indenter
+class CPPTOOLS_EXPORT CppQtStyleIndenter : public TextEditor::TextIndenter
 {
 public:
-    CppQtStyleIndenter();
+    explicit CppQtStyleIndenter(QTextDocument *doc);
     ~CppQtStyleIndenter() override;
 
     bool isElectricCharacter(const QChar &ch) const override;
-    void indentBlock(QTextDocument *doc,
-                     const QTextBlock &block,
+    void indentBlock(const QTextBlock &block,
                      const QChar &typedChar,
                      const TextEditor::TabSettings &tabSettings) override;
 
-    void indent(QTextDocument *doc,
-                const QTextCursor &cursor,
+    void indent(const QTextCursor &cursor,
                 const QChar &typedChar,
-                const TextEditor::TabSettings &tabSettings,
-                bool autoTriggered = true) override;
+                const TextEditor::TabSettings &tabSettings) override;
 
     void setCodeStylePreferences(TextEditor::ICodeStylePreferences *preferences) override;
-    void invalidateCache(QTextDocument *doc) override;
+    void invalidateCache() override;
     int indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings) override;
-    TextEditor::IndentationForBlock indentationForBlocks(const QVector<QTextBlock> &blocks,
-                                                         const TextEditor::TabSettings &tabSettings) override;
+    TextEditor::IndentationForBlock indentationForBlocks(
+        const QVector<QTextBlock> &blocks, const TextEditor::TabSettings &tabSettings) override;
+
 private:
     CppCodeStyleSettings codeStyleSettings() const;
     CppCodeStylePreferences *m_cppCodeStylePreferences = nullptr;
 };
 
-} // CppTools
+} // namespace CppTools
diff --git a/src/plugins/cpptools/cpprefactoringchanges.cpp b/src/plugins/cpptools/cpprefactoringchanges.cpp
index 929a6ec020..138a5a3693 100644
--- a/src/plugins/cpptools/cpprefactoringchanges.cpp
+++ b/src/plugins/cpptools/cpprefactoringchanges.cpp
@@ -56,8 +56,8 @@ public:
         const TextEditor::TabSettings &tabSettings =
             ProjectExplorer::actualTabSettings(fileName, textDocument);
 
-        CppQtStyleIndenter indenter;
-        indenter.indent(selection.document(), selection, QChar::Null, tabSettings);
+        CppQtStyleIndenter indenter(selection.document());
+        indenter.indent(selection, QChar::Null, tabSettings);
     }
 
     void reindentSelection(const QTextCursor &selection,
@@ -67,8 +67,9 @@ public:
         const TextEditor::TabSettings &tabSettings =
             ProjectExplorer::actualTabSettings(fileName, textDocument);
 
-        CppQtStyleIndenter indenter;
-        indenter.reindent(selection.document(), selection, tabSettings);
+        CppQtStyleIndenter indenter(selection.document());
+        indenter.reindent(selection,
+                          tabSettings);
     }
 
     void fileChanged(const QString &fileName) override
diff --git a/src/plugins/fakevim/fakevimplugin.cpp b/src/plugins/fakevim/fakevimplugin.cpp
index 537e47b18a..1807efb910 100644
--- a/src/plugins/fakevim/fakevimplugin.cpp
+++ b/src/plugins/fakevim/fakevimplugin.cpp
@@ -1633,7 +1633,7 @@ void FakeVimPluginPrivate::editorOpened(IEditor *editor)
                 while (!cursor.atBlockEnd())
                     cursor.deleteChar();
             } else {
-                tew->textDocument()->indenter()->indentBlock(doc, block, typedChar, tabSettings);
+                tew->textDocument()->indenter()->indentBlock(block, typedChar, tabSettings);
             }
             block = block.next();
         }
diff --git a/src/plugins/glsleditor/glsleditor.cpp b/src/plugins/glsleditor/glsleditor.cpp
index 33a4dafa47..c018e15f90 100644
--- a/src/plugins/glsleditor/glsleditor.cpp
+++ b/src/plugins/glsleditor/glsleditor.cpp
@@ -319,7 +319,7 @@ GlslEditorFactory::GlslEditorFactory()
 
     setDocumentCreator([]() { return new TextDocument(Constants::C_GLSLEDITOR_ID); });
     setEditorWidgetCreator([]() { return new GlslEditorWidget; });
-    setIndenterCreator([]() { return new GlslIndenter; });
+    setIndenterCreator([](QTextDocument *doc) { return new GlslIndenter(doc); });
     setSyntaxHighlighterCreator([]() { return new GlslHighlighter; });
     setCommentDefinition(Utils::CommentDefinition::CppStyle);
     setCompletionAssistProvider(new GlslCompletionAssistProvider);
diff --git a/src/plugins/glsleditor/glslindenter.cpp b/src/plugins/glsleditor/glslindenter.cpp
index b2c533f1e2..87b12f98e9 100644
--- a/src/plugins/glsleditor/glslindenter.cpp
+++ b/src/plugins/glsleditor/glslindenter.cpp
@@ -38,26 +38,25 @@
 namespace GlslEditor {
 namespace Internal {
 
+GlslIndenter::GlslIndenter(QTextDocument *doc)
+    : TextEditor::TextIndenter(doc)
+{}
 GlslIndenter::~GlslIndenter() = default;
 
 bool GlslIndenter::isElectricCharacter(const QChar &ch) const
 {
-    return ch == QLatin1Char('{')
-        || ch == QLatin1Char('}')
-        || ch == QLatin1Char(':')
-        || ch == QLatin1Char('#');
+    return ch == QLatin1Char('{') || ch == QLatin1Char('}') || ch == QLatin1Char(':')
+           || ch == QLatin1Char('#');
 }
 
-void GlslIndenter::indentBlock(QTextDocument *doc,
-                               const QTextBlock &block,
+void GlslIndenter::indentBlock(const QTextBlock &block,
                                const QChar &typedChar,
                                const TextEditor::TabSettings &tabSettings)
 {
-    Q_UNUSED(doc)
-
     // TODO: do something with it
-    CppTools::QtStyleCodeFormatter codeFormatter(tabSettings,
-              CppTools::CppToolsSettings::instance()->cppCodeStyle()->codeStyleSettings());
+    CppTools::QtStyleCodeFormatter
+        codeFormatter(tabSettings,
+                      CppTools::CppToolsSettings::instance()->cppCodeStyle()->codeStyleSettings());
 
     codeFormatter.updateStateUntil(block);
     int indent;
@@ -77,19 +76,19 @@ void GlslIndenter::indentBlock(QTextDocument *doc,
     tabSettings.indentLine(block, indent + padding, padding);
 }
 
-void GlslIndenter::indent(QTextDocument *doc,
-                          const QTextCursor &cursor,
+void GlslIndenter::indent(const QTextCursor &cursor,
                           const QChar &typedChar,
-                          const TextEditor::TabSettings &tabSettings,
-                          bool /*autoTriggered*/)
+                          const TextEditor::TabSettings &tabSettings)
 {
     if (cursor.hasSelection()) {
-        QTextBlock block = doc->findBlock(cursor.selectionStart());
-        const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
+        QTextBlock block = m_doc->findBlock(cursor.selectionStart());
+        const QTextBlock end = m_doc->findBlock(cursor.selectionEnd()).next();
 
         // TODO: do something with it
         CppTools::QtStyleCodeFormatter codeFormatter(tabSettings,
-                  CppTools::CppToolsSettings::instance()->cppCodeStyle()->codeStyleSettings());
+                                                     CppTools::CppToolsSettings::instance()
+                                                         ->cppCodeStyle()
+                                                         ->codeStyleSettings());
         codeFormatter.updateStateUntil(block);
 
         QTextCursor tc = cursor;
@@ -104,14 +103,15 @@ void GlslIndenter::indent(QTextDocument *doc,
         } while (block.isValid() && block != end);
         tc.endEditBlock();
     } else {
-        indentBlock(doc, cursor.block(), typedChar, tabSettings);
+        indentBlock(cursor.block(), typedChar, tabSettings);
     }
 }
 
 int GlslIndenter::indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings)
 {
-    CppTools::QtStyleCodeFormatter codeFormatter(tabSettings,
-              CppTools::CppToolsSettings::instance()->cppCodeStyle()->codeStyleSettings());
+    CppTools::QtStyleCodeFormatter
+        codeFormatter(tabSettings,
+                      CppTools::CppToolsSettings::instance()->cppCodeStyle()->codeStyleSettings());
 
     codeFormatter.updateStateUntil(block);
     int indent;
@@ -121,12 +121,12 @@ int GlslIndenter::indentFor(const QTextBlock &block, const TextEditor::TabSettin
     return indent;
 }
 
-TextEditor::IndentationForBlock
-GlslIndenter::indentationForBlocks(const QVector<QTextBlock> &blocks,
-                                   const TextEditor::TabSettings &tabSettings)
+TextEditor::IndentationForBlock GlslIndenter::indentationForBlocks(
+    const QVector<QTextBlock> &blocks, const TextEditor::TabSettings &tabSettings)
 {
-    CppTools::QtStyleCodeFormatter codeFormatter(tabSettings,
-              CppTools::CppToolsSettings::instance()->cppCodeStyle()->codeStyleSettings());
+    CppTools::QtStyleCodeFormatter
+        codeFormatter(tabSettings,
+                      CppTools::CppToolsSettings::instance()->cppCodeStyle()->codeStyleSettings());
 
     codeFormatter.updateStateUntil(blocks.last());
 
diff --git a/src/plugins/glsleditor/glslindenter.h b/src/plugins/glsleditor/glslindenter.h
index 75495f8303..beb6aaa849 100644
--- a/src/plugins/glsleditor/glslindenter.h
+++ b/src/plugins/glsleditor/glslindenter.h
@@ -25,31 +25,29 @@
 
 #pragma once
 
-#include <texteditor/indenter.h>
+#include <texteditor/textindenter.h>
 
 namespace GlslEditor {
 namespace Internal {
 
-class GlslIndenter : public TextEditor::Indenter
+class GlslIndenter : public TextEditor::TextIndenter
 {
 public:
+    explicit GlslIndenter(QTextDocument *doc);
     ~GlslIndenter() override;
 
     bool isElectricCharacter(const QChar &ch) const override;
-    void indentBlock(QTextDocument *doc,
-                     const QTextBlock &block,
+    void indentBlock(const QTextBlock &block,
                      const QChar &typedChar,
                      const TextEditor::TabSettings &tabSettings) override;
 
-    void indent(QTextDocument *doc,
-                const QTextCursor &cursor,
+    void indent(const QTextCursor &cursor,
                 const QChar &typedChar,
-                const TextEditor::TabSettings &tabSettings,
-                bool autoTriggered = true) override;
+                const TextEditor::TabSettings &tabSettings) override;
 
     int indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings) override;
-    TextEditor::IndentationForBlock indentationForBlocks(const QVector<QTextBlock> &blocks,
-                                                         const TextEditor::TabSettings &tabSettings) override;
+    TextEditor::IndentationForBlock indentationForBlocks(
+        const QVector<QTextBlock> &blocks, const TextEditor::TabSettings &tabSettings) override;
 };
 
 } // namespace Internal
diff --git a/src/plugins/nim/editor/nimeditorfactory.cpp b/src/plugins/nim/editor/nimeditorfactory.cpp
index 91a57adcb2..c6f4f17dff 100644
--- a/src/plugins/nim/editor/nimeditorfactory.cpp
+++ b/src/plugins/nim/editor/nimeditorfactory.cpp
@@ -60,8 +60,8 @@ NimEditorFactory::NimEditorFactory()
     setDocumentCreator([]() {
         return new TextDocument(Constants::C_NIMEDITOR_ID);
     });
-    setIndenterCreator([]() {
-        return new NimIndenter;
+    setIndenterCreator([](QTextDocument *doc) {
+        return new NimIndenter(doc);
     });
     setSyntaxHighlighterCreator([]() {
         return new NimHighlighter;
@@ -80,7 +80,7 @@ Core::IEditor *NimEditorFactory::createEditor()
 void NimEditorFactory::decorateEditor(TextEditorWidget *editor)
 {
     editor->textDocument()->setSyntaxHighlighter(new NimHighlighter());
-    editor->textDocument()->setIndenter(new NimIndenter());
+    editor->textDocument()->setIndenter(new NimIndenter(editor->textDocument()->document()));
 }
 
 }
diff --git a/src/plugins/nim/editor/nimindenter.cpp b/src/plugins/nim/editor/nimindenter.cpp
index 8adf4a0730..0b61a4536b 100644
--- a/src/plugins/nim/editor/nimindenter.cpp
+++ b/src/plugins/nim/editor/nimindenter.cpp
@@ -37,7 +37,8 @@
 
 namespace Nim {
 
-NimIndenter::NimIndenter()
+NimIndenter::NimIndenter(QTextDocument *doc)
+    : TextEditor::TextIndenter(doc)
 {}
 
 bool NimIndenter::isElectricCharacter(const QChar &ch) const
@@ -45,12 +46,10 @@ bool NimIndenter::isElectricCharacter(const QChar &ch) const
     return NimIndenter::electricCharacters().contains(ch);
 }
 
-void NimIndenter::indentBlock(QTextDocument *document,
-                              const QTextBlock &block,
+void NimIndenter::indentBlock(const QTextBlock &block,
                               const QChar &typedChar,
                               const TextEditor::TabSettings &settings)
 {
-    Q_UNUSED(document);
     Q_UNUSED(typedChar);
 
     const QString currentLine = block.text();
diff --git a/src/plugins/nim/editor/nimindenter.h b/src/plugins/nim/editor/nimindenter.h
index adf09c6a62..0342eda753 100644
--- a/src/plugins/nim/editor/nimindenter.h
+++ b/src/plugins/nim/editor/nimindenter.h
@@ -25,23 +25,24 @@
 
 #pragma once
 
-#include <texteditor/indenter.h>
+#include <texteditor/textindenter.h>
 
-namespace TextEditor { class SimpleCodeStylePreferences; }
+namespace TextEditor {
+class SimpleCodeStylePreferences;
+}
 
 namespace Nim {
 
 class NimLexer;
 
-class NimIndenter : public TextEditor::Indenter
+class NimIndenter : public TextEditor::TextIndenter
 {
 public:
-    NimIndenter();
+    explicit NimIndenter(QTextDocument *doc);
 
     bool isElectricCharacter(const QChar &ch) const override;
 
-    void indentBlock(QTextDocument *document,
-                     const QTextBlock &block,
+    void indentBlock(const QTextBlock &block,
                      const QChar &typedChar,
                      const TextEditor::TabSettings &settings) override;
 
@@ -51,9 +52,11 @@ private:
     bool startsBlock(const QString &line, int state) const;
     bool endsBlock(const QString &line, int state) const;
 
-    int calculateIndentationDiff(const QString &previousLine, int previousState, int indentSize) const;
+    int calculateIndentationDiff(const QString &previousLine,
+                                 int previousState,
+                                 int indentSize) const;
 
-    static QString rightTrimmed(const QString& other);
+    static QString rightTrimmed(const QString &other);
 };
 
-}
+} // namespace Nim
diff --git a/src/plugins/nim/settings/nimcodestylepreferencesfactory.cpp b/src/plugins/nim/settings/nimcodestylepreferencesfactory.cpp
index 997622278e..299c6d13e5 100644
--- a/src/plugins/nim/settings/nimcodestylepreferencesfactory.cpp
+++ b/src/plugins/nim/settings/nimcodestylepreferencesfactory.cpp
@@ -67,9 +67,9 @@ QWidget *NimCodeStylePreferencesFactory::createEditor(TextEditor::ICodeStylePref
     return result;
 }
 
-TextEditor::Indenter *NimCodeStylePreferencesFactory::createIndenter() const
+TextEditor::Indenter *NimCodeStylePreferencesFactory::createIndenter(QTextDocument *doc) const
 {
-    return new NimIndenter();
+    return new NimIndenter(doc);
 }
 
 QString NimCodeStylePreferencesFactory::snippetProviderGroupId() const
diff --git a/src/plugins/nim/settings/nimcodestylepreferencesfactory.h b/src/plugins/nim/settings/nimcodestylepreferencesfactory.h
index 987ad253e3..e3d7ce3251 100644
--- a/src/plugins/nim/settings/nimcodestylepreferencesfactory.h
+++ b/src/plugins/nim/settings/nimcodestylepreferencesfactory.h
@@ -41,7 +41,7 @@ public:
     TextEditor::ICodeStylePreferences *createCodeStyle() const override;
     QWidget *createEditor(TextEditor::ICodeStylePreferences *settings,
                           QWidget *parent) const override;
-    TextEditor::Indenter *createIndenter() const override;
+    TextEditor::Indenter *createIndenter(QTextDocument *doc) const override;
     QString snippetProviderGroupId() const override;
     QString previewText() const override;
 };
diff --git a/src/plugins/nim/settings/nimcodestylepreferenceswidget.cpp b/src/plugins/nim/settings/nimcodestylepreferenceswidget.cpp
index 2f98932cc2..b4e735ff48 100644
--- a/src/plugins/nim/settings/nimcodestylepreferenceswidget.cpp
+++ b/src/plugins/nim/settings/nimcodestylepreferenceswidget.cpp
@@ -96,8 +96,7 @@ void NimCodeStylePreferencesWidget::updatePreview()
     QTextCursor tc = m_ui->previewTextEdit->textCursor();
     tc.beginEditBlock();
     while (block.isValid()) {
-        m_ui->previewTextEdit->textDocument()->indenter()
-                ->indentBlock(doc, block, QChar::Null, ts);
+        m_ui->previewTextEdit->textDocument()->indenter()->indentBlock(block, QChar::Null, ts);
         block = block.next();
     }
     tc.endEditBlock();
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.cpp b/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.cpp
index 013de06c0a..e0a06c824e 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.cpp
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.cpp
@@ -36,7 +36,6 @@
 #include <coreplugin/dialogs/promptoverwritedialog.h>
 #include <texteditor/icodestylepreferences.h>
 #include <texteditor/icodestylepreferencesfactory.h>
-#include <texteditor/indenter.h>
 #include <texteditor/normalindenter.h>
 #include <texteditor/storagesettings.h>
 #include <texteditor/tabsettings.h>
@@ -94,18 +93,22 @@ bool JsonWizardGenerator::formatFile(const JsonWizard *wizard, GeneratedFile *fi
     auto baseProject = qobject_cast<Project *>(wizard->property("SelectedProject").value<QObject *>());
     ICodeStylePreferencesFactory *factory = TextEditorSettings::codeStyleFactory(languageId);
 
+    QTextDocument doc(file->contents());
+    QTextCursor cursor(&doc);
     Indenter *indenter = nullptr;
-    if (factory)
-        indenter = factory->createIndenter();
+    if (factory) {
+        indenter = factory->createIndenter(&doc);
+        indenter->setFileName(Utils::FileName::fromString(file->path()));
+    }
     if (!indenter)
-        indenter = new NormalIndenter();
-
+        indenter = new NormalIndenter(&doc);
     ICodeStylePreferences *codeStylePrefs = codeStylePreferences(baseProject, languageId);
     indenter->setCodeStylePreferences(codeStylePrefs);
-    QTextDocument doc(file->contents());
-    QTextCursor cursor(&doc);
+
     cursor.select(QTextCursor::Document);
-    indenter->indent(&doc, cursor, QChar::Null, codeStylePrefs->currentTabSettings());
+    indenter->indent(cursor,
+                     QChar::Null,
+                     codeStylePrefs->currentTabSettings());
     delete indenter;
     if (TextEditorSettings::storageSettings().m_cleanWhitespace) {
         QTextBlock block = doc.firstBlock();
diff --git a/src/plugins/projectexplorer/projectfilewizardextension.cpp b/src/plugins/projectexplorer/projectfilewizardextension.cpp
index 4b4ecaeb30..5dab7bbf99 100644
--- a/src/plugins/projectexplorer/projectfilewizardextension.cpp
+++ b/src/plugins/projectexplorer/projectfilewizardextension.cpp
@@ -252,18 +252,23 @@ void ProjectFileWizardExtension::applyCodeStyle(GeneratedFile *file) const
 
     ICodeStylePreferencesFactory *factory = TextEditorSettings::codeStyleFactory(languageId);
 
+    QTextDocument doc(file->contents());
     Indenter *indenter = nullptr;
-    if (factory)
-        indenter = factory->createIndenter();
+    if (factory) {
+        indenter = factory->createIndenter(&doc);
+        indenter->setFileName(Utils::FileName::fromString(file->path()));
+    }
     if (!indenter)
-        indenter = new NormalIndenter();
+        indenter = new NormalIndenter(&doc);
 
     ICodeStylePreferences *codeStylePrefs = codeStylePreferences(baseProject, languageId);
     indenter->setCodeStylePreferences(codeStylePrefs);
-    QTextDocument doc(file->contents());
+
     QTextCursor cursor(&doc);
     cursor.select(QTextCursor::Document);
-    indenter->indent(&doc, cursor, QChar::Null, codeStylePrefs->currentTabSettings());
+    indenter->indent(cursor,
+                     QChar::Null,
+                     codeStylePrefs->currentTabSettings());
     delete indenter;
     if (TextEditorSettings::storageSettings().m_cleanWhitespace) {
         QTextBlock block = doc.firstBlock();
diff --git a/src/plugins/pythoneditor/pythoneditor.cpp b/src/plugins/pythoneditor/pythoneditor.cpp
index 4c8b95ad92..d0f27ae63c 100644
--- a/src/plugins/pythoneditor/pythoneditor.cpp
+++ b/src/plugins/pythoneditor/pythoneditor.cpp
@@ -54,7 +54,7 @@ PythonEditorFactory::PythonEditorFactory()
                             | TextEditorActionHandler::FollowSymbolUnderCursor);
 
     setDocumentCreator([] { return new TextDocument(Constants::C_PYTHONEDITOR_ID); });
-    setIndenterCreator([] { return new PythonIndenter; });
+    setIndenterCreator([](QTextDocument *doc) { return new PythonIndenter(doc); });
     setSyntaxHighlighterCreator([] { return new PythonHighlighter; });
     setCommentDefinition(Utils::CommentDefinition::HashStyle);
     setParenthesesMatchingEnabled(true);
diff --git a/src/plugins/pythoneditor/pythonindenter.cpp b/src/plugins/pythoneditor/pythonindenter.cpp
index 035f1aef7c..ee7813f327 100644
--- a/src/plugins/pythoneditor/pythonindenter.cpp
+++ b/src/plugins/pythoneditor/pythonindenter.cpp
@@ -50,6 +50,10 @@ static QTextBlock previousNonEmptyBlock(const QTextBlock &block)
     return result;
 }
 
+PythonIndenter::PythonIndenter(QTextDocument *doc)
+    : TextEditor::TextIndenter(doc)
+{}
+
 /**
  * @brief Does given character change indentation level?
  * @param ch Any value
diff --git a/src/plugins/pythoneditor/pythonindenter.h b/src/plugins/pythoneditor/pythonindenter.h
index 414c5dcb25..8ce10ba4fe 100644
--- a/src/plugins/pythoneditor/pythonindenter.h
+++ b/src/plugins/pythoneditor/pythonindenter.h
@@ -25,12 +25,14 @@
 
 #pragma once
 
-#include <texteditor/indenter.h>
+#include <texteditor/textindenter.h>
 
 namespace PythonEditor {
 
-class PythonIndenter : public TextEditor::Indenter
+class PythonIndenter : public TextEditor::TextIndenter
 {
+public:
+    explicit PythonIndenter(QTextDocument *doc);
 private:
     bool isElectricCharacter(const QChar &ch) const override;
     int indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings) override;
diff --git a/src/plugins/qmldesigner/designercore/model/basetexteditmodifier.cpp b/src/plugins/qmldesigner/designercore/model/basetexteditmodifier.cpp
index 612f3003e5..a5fddccba9 100644
--- a/src/plugins/qmldesigner/designercore/model/basetexteditmodifier.cpp
+++ b/src/plugins/qmldesigner/designercore/model/basetexteditmodifier.cpp
@@ -61,8 +61,8 @@ void BaseTextEditModifier::indentLines(int startLine, int endLine)
         QTextBlock start = textDocument->findBlockByNumber(i);
 
         if (start.isValid()) {
-            QmlJSEditor::Internal::Indenter indenter;
-            indenter.indentBlock(textDocument, start, QChar::Null, tabSettings);
+            QmlJSEditor::Internal::Indenter indenter(textDocument);
+            indenter.indentBlock(start, QChar::Null, tabSettings);
         }
     }
     tc.endEditBlock();
diff --git a/src/plugins/qmljseditor/qmljseditor.cpp b/src/plugins/qmljseditor/qmljseditor.cpp
index dadd9bee60..ee3f30b2fe 100644
--- a/src/plugins/qmljseditor/qmljseditor.cpp
+++ b/src/plugins/qmljseditor/qmljseditor.cpp
@@ -1071,7 +1071,7 @@ QmlJSEditorFactory::QmlJSEditorFactory()
 void QmlJSEditorFactory::decorateEditor(TextEditorWidget *editor)
 {
     editor->textDocument()->setSyntaxHighlighter(new QmlJSHighlighter);
-    editor->textDocument()->setIndenter(new Indenter);
+    editor->textDocument()->setIndenter(new Indenter(editor->textDocument()->document()));
     editor->setAutoCompleter(new AutoCompleter);
 }
 
diff --git a/src/plugins/qmljseditor/qmljseditordocument.cpp b/src/plugins/qmljseditor/qmljseditordocument.cpp
index ae18e6a573..2f30f324cb 100644
--- a/src/plugins/qmljseditor/qmljseditordocument.cpp
+++ b/src/plugins/qmljseditor/qmljseditordocument.cpp
@@ -653,7 +653,7 @@ QmlJSEditorDocument::QmlJSEditorDocument()
     connect(this, &TextEditor::TextDocument::tabSettingsChanged,
             d, &Internal::QmlJSEditorDocumentPrivate::invalidateFormatterCache);
     setSyntaxHighlighter(new QmlJSHighlighter(document()));
-    setIndenter(new Internal::Indenter);
+    setIndenter(new Internal::Indenter(document()));
 }
 
 QmlJSEditorDocument::~QmlJSEditorDocument()
diff --git a/src/plugins/qmljseditor/quicktoolbar.cpp b/src/plugins/qmljseditor/quicktoolbar.cpp
index 89c6dc349b..15dec5a80c 100644
--- a/src/plugins/qmljseditor/quicktoolbar.cpp
+++ b/src/plugins/qmljseditor/quicktoolbar.cpp
@@ -421,8 +421,8 @@ void QuickToolBar::indentLines(int startLine, int endLine)
             QTextBlock start = m_editorWidget->document()->findBlockByNumber(i);
 
             if (start.isValid()) {
-                QmlJSEditor::Internal::Indenter indenterMy;
-                indenterMy.indentBlock(m_editorWidget->document(), start, QChar::Null, tabSettings);
+                QmlJSEditor::Internal::Indenter indenterMy(m_editorWidget->document());
+                indenterMy.indentBlock(start, QChar::Null, tabSettings);
             }
         }
     }
diff --git a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp
index f49f88929f..3ca3bbc999 100644
--- a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp
+++ b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.cpp
@@ -80,9 +80,9 @@ QWidget *QmlJSCodeStylePreferencesFactory::createEditor(TextEditor::ICodeStylePr
     return widget;
 }
 
-TextEditor::Indenter *QmlJSCodeStylePreferencesFactory::createIndenter() const
+TextEditor::Indenter *QmlJSCodeStylePreferencesFactory::createIndenter(QTextDocument *doc) const
 {
-    return new QmlJSEditor::Internal::Indenter();
+    return new QmlJSEditor::Internal::Indenter(doc);
 }
 
 QString QmlJSCodeStylePreferencesFactory::snippetProviderGroupId() const
diff --git a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
index 18f40a98d3..111103f243 100644
--- a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
+++ b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
@@ -39,7 +39,7 @@ public:
     TextEditor::ICodeStylePreferences *createCodeStyle() const override;
     QWidget *createEditor(TextEditor::ICodeStylePreferences *settings,
                           QWidget *parent) const override;
-    TextEditor::Indenter *createIndenter() const override;
+    TextEditor::Indenter *createIndenter(QTextDocument *doc) const override;
     QString snippetProviderGroupId() const override;
     QString previewText() const override;
 };
diff --git a/src/plugins/qmljstools/qmljscodestylesettingspage.cpp b/src/plugins/qmljstools/qmljscodestylesettingspage.cpp
index f13ac29f75..2de503b782 100644
--- a/src/plugins/qmljstools/qmljscodestylesettingspage.cpp
+++ b/src/plugins/qmljstools/qmljscodestylesettingspage.cpp
@@ -113,8 +113,7 @@ void QmlJSCodeStylePreferencesWidget::updatePreview()
     QTextCursor tc = m_ui->previewTextEdit->textCursor();
     tc.beginEditBlock();
     while (block.isValid()) {
-        m_ui->previewTextEdit->textDocument()->indenter()
-                ->indentBlock(doc, block, QChar::Null, ts);
+        m_ui->previewTextEdit->textDocument()->indenter()->indentBlock(block, QChar::Null, ts);
         block = block.next();
     }
     tc.endEditBlock();
diff --git a/src/plugins/qmljstools/qmljsindenter.cpp b/src/plugins/qmljstools/qmljsindenter.cpp
index 416267e695..3e156d756e 100644
--- a/src/plugins/qmljstools/qmljsindenter.cpp
+++ b/src/plugins/qmljstools/qmljsindenter.cpp
@@ -35,7 +35,9 @@
 using namespace QmlJSEditor;
 using namespace Internal;
 
-Indenter::Indenter() = default;
+Indenter::Indenter(QTextDocument *doc)
+    : TextEditor::TextIndenter(doc)
+{}
 
 Indenter::~Indenter() = default;
 
@@ -49,13 +51,10 @@ bool Indenter::isElectricCharacter(const QChar &ch) const
     return false;
 }
 
-void Indenter::indentBlock(QTextDocument *doc,
-                           const QTextBlock &block,
+void Indenter::indentBlock(const QTextBlock &block,
                            const QChar &typedChar,
                            const TextEditor::TabSettings &tabSettings)
 {
-    Q_UNUSED(doc)
-
     const int depth = indentFor(block, tabSettings);
     if (depth == -1)
         return;
@@ -74,29 +73,24 @@ void Indenter::indentBlock(QTextDocument *doc,
     tabSettings.indentLine(block, depth);
 }
 
-void Indenter::invalidateCache(QTextDocument *doc)
+void Indenter::invalidateCache()
 {
     QmlJSTools::CreatorCodeFormatter codeFormatter;
-    codeFormatter.invalidateCache(doc);
+    codeFormatter.invalidateCache(m_doc);
 }
 
-
-int Indenter::indentFor(const QTextBlock &block,
-                        const TextEditor::TabSettings &tabSettings)
+int Indenter::indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings)
 {
     QmlJSTools::CreatorCodeFormatter codeFormatter(tabSettings);
     codeFormatter.updateStateUntil(block);
     return codeFormatter.indentFor(block);
 }
 
-
-TextEditor::IndentationForBlock
-Indenter::indentationForBlocks(const QVector<QTextBlock> &blocks,
-                               const TextEditor::TabSettings &tabSettings)
+TextEditor::IndentationForBlock Indenter::indentationForBlocks(
+    const QVector<QTextBlock> &blocks, const TextEditor::TabSettings &tabSettings)
 {
     QmlJSTools::CreatorCodeFormatter codeFormatter(tabSettings);
 
-
     codeFormatter.updateStateUntil(blocks.last());
 
     TextEditor::IndentationForBlock ret;
diff --git a/src/plugins/qmljstools/qmljsindenter.h b/src/plugins/qmljstools/qmljsindenter.h
index 1c82a1b18c..3a51790556 100644
--- a/src/plugins/qmljstools/qmljsindenter.h
+++ b/src/plugins/qmljstools/qmljsindenter.h
@@ -27,27 +27,26 @@
 
 #include "qmljstools_global.h"
 
-#include <texteditor/indenter.h>
+#include <texteditor/textindenter.h>
 
 namespace QmlJSEditor {
 namespace Internal {
 
-class QMLJSTOOLS_EXPORT Indenter : public TextEditor::Indenter
+class QMLJSTOOLS_EXPORT Indenter : public TextEditor::TextIndenter
 {
 public:
-    Indenter();
+    explicit Indenter(QTextDocument *doc);
     ~Indenter() override;
 
     bool isElectricCharacter(const QChar &ch) const override;
-    void indentBlock(QTextDocument *doc,
-                     const QTextBlock &block,
+    void indentBlock(const QTextBlock &block,
                      const QChar &typedChar,
                      const TextEditor::TabSettings &tabSettings) override;
-    void invalidateCache(QTextDocument *doc) override;
+    void invalidateCache() override;
 
     int indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings) override;
-    TextEditor::IndentationForBlock indentationForBlocks(const QVector<QTextBlock> &blocks,
-                                                         const TextEditor::TabSettings &tabSettings) override;
+    TextEditor::IndentationForBlock indentationForBlocks(
+        const QVector<QTextBlock> &blocks, const TextEditor::TabSettings &tabSettings) override;
 };
 
 } // Internal
diff --git a/src/plugins/qmljstools/qmljsrefactoringchanges.cpp b/src/plugins/qmljstools/qmljsrefactoringchanges.cpp
index b27631c2d0..3fda024e4e 100644
--- a/src/plugins/qmljstools/qmljsrefactoringchanges.cpp
+++ b/src/plugins/qmljstools/qmljsrefactoringchanges.cpp
@@ -77,8 +77,8 @@ public:
         const TextEditor::TabSettings &tabSettings =
             ProjectExplorer::actualTabSettings(fileName, textDocument);
 
-        QmlJSEditor::Internal::Indenter indenter;
-        indenter.reindent(selection.document(), selection, tabSettings);
+        QmlJSEditor::Internal::Indenter indenter(selection.document());
+        indenter.reindent(selection, tabSettings);
     }
 
     void fileChanged(const QString &fileName) override
diff --git a/src/plugins/texteditor/codestyleeditor.cpp b/src/plugins/texteditor/codestyleeditor.cpp
index cbf74c0a12..edfc40d12b 100644
--- a/src/plugins/texteditor/codestyleeditor.cpp
+++ b/src/plugins/texteditor/codestyleeditor.cpp
@@ -83,14 +83,15 @@ void CodeStyleEditor::updatePreview()
 {
     QTextDocument *doc = m_preview->document();
 
-    m_preview->textDocument()->indenter()->invalidateCache(doc);
+    m_preview->textDocument()->indenter()->invalidateCache();
 
     QTextBlock block = doc->firstBlock();
     QTextCursor tc = m_preview->textCursor();
     tc.beginEditBlock();
     while (block.isValid()) {
-        m_preview->textDocument()->indenter()
-                ->indentBlock(doc, block, QChar::Null, m_codeStyle->currentTabSettings());
+        m_preview->textDocument()->indenter()->indentBlock(block,
+                                                           QChar::Null,
+                                                           m_codeStyle->currentTabSettings());
         block = block.next();
     }
     tc.endEditBlock();
diff --git a/src/plugins/texteditor/icodestylepreferencesfactory.h b/src/plugins/texteditor/icodestylepreferencesfactory.h
index 43cc6edffd..2acc0a5fa4 100644
--- a/src/plugins/texteditor/icodestylepreferencesfactory.h
+++ b/src/plugins/texteditor/icodestylepreferencesfactory.h
@@ -27,13 +27,14 @@
 
 #include "texteditor_global.h"
 
+#include "indenter.h"
+
 #include <QObject>
 
 namespace Core { class Id; }
 namespace TextEditor {
 
 class ICodeStylePreferences;
-class Indenter;
 class SnippetProvider;
 
 class TEXTEDITOR_EXPORT ICodeStylePreferencesFactory : public QObject
@@ -48,7 +49,7 @@ public:
     virtual QString displayName() = 0;
     virtual ICodeStylePreferences *createCodeStyle() const = 0;
     virtual QWidget *createEditor(ICodeStylePreferences *preferences, QWidget *parent) const = 0;
-    virtual TextEditor::Indenter *createIndenter() const = 0;
+    virtual TextEditor::Indenter *createIndenter(QTextDocument *doc) const = 0;
     virtual QString snippetProviderGroupId() const = 0;
     virtual QString previewText() const = 0;
 };
diff --git a/src/plugins/texteditor/indenter.h b/src/plugins/texteditor/indenter.h
index 300e92a135..5b4b97fbfa 100644
--- a/src/plugins/texteditor/indenter.h
+++ b/src/plugins/texteditor/indenter.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2019 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of Qt Creator.
@@ -25,21 +25,16 @@
 
 #pragma once
 
-#include "texteditor_global.h"
-
-#include "tabsettings.h"
+#include <utils/fileutils.h>
+#include <utils/optional.h>
 
 #include <QMap>
+#include <QTextBlock>
 #include <vector>
 
-QT_BEGIN_NAMESPACE
-class QTextDocument;
-class QTextCursor;
-class QTextBlock;
-class QChar;
-QT_END_NAMESPACE
-
-namespace Utils { class FileName; }
+namespace Utils {
+class FileName;
+}
 
 namespace TextEditor {
 
@@ -48,7 +43,7 @@ class TabSettings;
 
 using IndentationForBlock = QMap<int, int>;
 
-class TEXTEDITOR_EXPORT Replacement
+class Replacement
 {
 public:
     Replacement(int offset, int length, const QString &text)
@@ -63,50 +58,57 @@ public:
 
 using Replacements = std::vector<Replacement>;
 
-class TEXTEDITOR_EXPORT Indenter
+class Indenter
 {
 public:
-    Indenter();
-    virtual ~Indenter();
+    explicit Indenter(QTextDocument *doc)
+        : m_doc(doc)
+    {}
+
+    void setFileName(const Utils::FileName &fileName) { m_fileName = fileName; }
+
+    virtual ~Indenter() = default;
 
     // Returns true if key triggers an indent.
-    virtual bool isElectricCharacter(const QChar &ch) const;
+    virtual bool isElectricCharacter(const QChar & /*ch*/) const { return false; }
+
+    virtual void setCodeStylePreferences(ICodeStylePreferences * /*preferences*/) {}
+
+    virtual void invalidateCache() {}
+
+    virtual int indentFor(const QTextBlock & /*block*/, const TabSettings & /*tabSettings*/)
+    {
+        return -1;
+    }
+
+    // Expects a list of blocks in order of occurrence in the document.
+    virtual IndentationForBlock indentationForBlocks(const QVector<QTextBlock> &blocks,
+                                                     const TabSettings & /*tabSettings*/)
+        = 0;
+    virtual Utils::optional<TabSettings> tabSettings() const = 0;
 
     // Indent a text block based on previous line. Default does nothing
-    virtual void indentBlock(QTextDocument *doc,
-                             const QTextBlock &block,
+    virtual void indentBlock(const QTextBlock &block,
                              const QChar &typedChar,
-                             const TabSettings &tabSettings);
+                             const TabSettings &tabSettings)
+        = 0;
 
     // Indent at cursor. Calls indentBlock for selection or current line.
-    virtual void indent(QTextDocument *doc,
-                        const QTextCursor &cursor,
+    virtual void indent(const QTextCursor &cursor,
                         const QChar &typedChar,
-                        const TabSettings &tabSettings,
-                        bool autoTriggered = true);
+                        const TabSettings &tabSettings)
+        = 0;
 
     // By default just calls indent with default settings.
-    virtual Replacements format(QTextDocument *doc,
-                                const Utils::FileName &fileName,
-                                const QTextCursor &cursor,
-                                const TabSettings &tabSettings);
+    virtual Replacements format(const QTextCursor &cursor, const TabSettings &tabSettings) = 0;
 
     // Reindent at cursor. Selection will be adjusted according to the indentation
     // change of the first block.
-    virtual void reindent(QTextDocument *doc, const QTextCursor &cursor, const TabSettings &tabSettings);
-
-    virtual void setCodeStylePreferences(ICodeStylePreferences *preferences);
-
-    virtual void invalidateCache(QTextDocument *doc);
-
-    virtual int indentFor(const QTextBlock &block, const TextEditor::TabSettings &tabSettings);
-
-    // Expects a list of blocks in order of occurrence in the document.
-    virtual IndentationForBlock indentationForBlocks(const QVector<QTextBlock> &blocks,
-                                                     const TextEditor::TabSettings &tabSettings);
+    virtual void reindent(const QTextCursor &cursor, const TabSettings &tabSettings) = 0;
 
-    virtual bool hasTabSettings() const { return false; }
-    virtual TabSettings tabSettings() const { return TabSettings(); }
+protected:
+    QTextDocument *m_doc;
+    Utils::FileName m_fileName;
 };
 
 } // namespace TextEditor
diff --git a/src/plugins/texteditor/normalindenter.cpp b/src/plugins/texteditor/normalindenter.cpp
index d1956d83d8..7faea84c48 100644
--- a/src/plugins/texteditor/normalindenter.cpp
+++ b/src/plugins/texteditor/normalindenter.cpp
@@ -50,6 +50,10 @@
 
 using namespace TextEditor;
 
+NormalIndenter::NormalIndenter(QTextDocument *doc)
+    : TextIndenter(doc)
+{}
+
 int NormalIndenter::indentFor(const QTextBlock &block, const TabSettings &tabSettings)
 {
     Q_UNUSED(tabSettings);
diff --git a/src/plugins/texteditor/normalindenter.h b/src/plugins/texteditor/normalindenter.h
index 119c2b8f66..ece41fa52d 100644
--- a/src/plugins/texteditor/normalindenter.h
+++ b/src/plugins/texteditor/normalindenter.h
@@ -25,14 +25,14 @@
 
 #pragma once
 
-#include "indenter.h"
+#include "textindenter.h"
 
 namespace TextEditor {
 
-class TEXTEDITOR_EXPORT NormalIndenter : public Indenter
+class TEXTEDITOR_EXPORT NormalIndenter : public TextIndenter
 {
 public:
-    NormalIndenter() = default;
+    explicit NormalIndenter(QTextDocument *doc);
     ~NormalIndenter() override = default;
 
     int indentFor(const QTextBlock &block, const TabSettings &tabSettings) override;
diff --git a/src/plugins/texteditor/plaintexteditorfactory.cpp b/src/plugins/texteditor/plaintexteditorfactory.cpp
index f585115e7f..02e89b4227 100644
--- a/src/plugins/texteditor/plaintexteditorfactory.cpp
+++ b/src/plugins/texteditor/plaintexteditorfactory.cpp
@@ -65,7 +65,7 @@ PlainTextEditorFactory::PlainTextEditorFactory()
 
     setDocumentCreator([]() { return new TextDocument(Core::Constants::K_DEFAULT_TEXT_EDITOR_ID); });
     setEditorWidgetCreator([]() { return new PlainTextEditorWidget; });
-    setIndenterCreator([]() { return new NormalIndenter; });
+    setIndenterCreator([](QTextDocument *doc) { return new NormalIndenter(doc); });
     setUseGenericHighlighter(true);
 
     setEditorActionHandlers(TextEditorActionHandler::Format |
diff --git a/src/plugins/texteditor/textdocument.cpp b/src/plugins/texteditor/textdocument.cpp
index 7edbdd1488..ef504447a5 100644
--- a/src/plugins/texteditor/textdocument.cpp
+++ b/src/plugins/texteditor/textdocument.cpp
@@ -27,7 +27,7 @@
 
 #include "extraencodingsettings.h"
 #include "fontsettings.h"
-#include "indenter.h"
+#include "textindenter.h"
 #include "storagesettings.h"
 #include "syntaxhighlighter.h"
 #include "tabsettings.h"
@@ -78,7 +78,7 @@ class TextDocumentPrivate
 {
 public:
     TextDocumentPrivate()
-        : m_indenter(new Indenter)
+        : m_indenter(new TextIndenter(&m_document))
     {
     }
 
@@ -416,19 +416,19 @@ void TextDocument::setExtraEncodingSettings(const ExtraEncodingSettings &extraEn
     d->m_extraEncodingSettings = extraEncodingSettings;
 }
 
-void TextDocument::autoIndent(const QTextCursor &cursor, QChar typedChar, bool autoTriggered)
+void TextDocument::autoIndent(const QTextCursor &cursor, QChar typedChar)
 {
-    d->m_indenter->indent(&d->m_document, cursor, typedChar, tabSettings(), autoTriggered);
+    d->m_indenter->indent(cursor, typedChar, tabSettings());
 }
 
 void TextDocument::autoReindent(const QTextCursor &cursor)
 {
-    d->m_indenter->reindent(&d->m_document, cursor, tabSettings());
+    d->m_indenter->reindent(cursor, tabSettings());
 }
 
 void TextDocument::autoFormat(const QTextCursor &cursor)
 {
-    d->m_indenter->format(&d->m_document, filePath(), cursor, tabSettings());
+    d->m_indenter->format(cursor, tabSettings());
 }
 
 QTextCursor TextDocument::indent(const QTextCursor &cursor, bool blockSelection, int column,
@@ -824,8 +824,8 @@ void TextDocument::cleanWhitespace(QTextCursor &cursor, bool cleanIndentation, b
         return;
 
     const TabSettings currentTabSettings = tabSettings();
-    const IndentationForBlock &indentations =
-            d->m_indenter->indentationForBlocks(blocks, currentTabSettings);
+    const IndentationForBlock &indentations
+        = d->m_indenter->indentationForBlocks(blocks, currentTabSettings);
 
     foreach (block, blocks) {
         QString blockText = block.text();
diff --git a/src/plugins/texteditor/textdocument.h b/src/plugins/texteditor/textdocument.h
index f293b3aeaa..eaa102ec74 100644
--- a/src/plugins/texteditor/textdocument.h
+++ b/src/plugins/texteditor/textdocument.h
@@ -26,6 +26,7 @@
 #pragma once
 
 #include "texteditor_global.h"
+#include "indenter.h"
 
 #include <coreplugin/id.h>
 #include <coreplugin/textdocument.h>
@@ -48,7 +49,6 @@ namespace TextEditor {
 class CompletionAssistProvider;
 class ExtraEncodingSettings;
 class FontSettings;
-class Indenter;
 class IAssistProvider;
 class StorageSettings;
 class SyntaxHighlighter;
@@ -87,8 +87,7 @@ public:
 
     void setIndenter(Indenter *indenter);
     Indenter *indenter() const;
-    void autoIndent(const QTextCursor &cursor, QChar typedChar = QChar::Null,
-                    bool autoTriggered = true);
+    void autoIndent(const QTextCursor &cursor, QChar typedChar = QChar::Null);
     void autoReindent(const QTextCursor &cursor);
     void autoFormat(const QTextCursor &cursor);
     QTextCursor indent(const QTextCursor &cursor, bool blockSelection = false, int column = 0,
diff --git a/src/plugins/texteditor/texteditor.cpp b/src/plugins/texteditor/texteditor.cpp
index e2d46141fb..d7ceb83144 100644
--- a/src/plugins/texteditor/texteditor.cpp
+++ b/src/plugins/texteditor/texteditor.cpp
@@ -8738,7 +8738,7 @@ IEditor *TextEditorFactory::createEditor()
     TextDocumentPtr doc(d->m_documentCreator());
 
     if (d->m_indenterCreator)
-        doc->setIndenter(d->m_indenterCreator());
+        doc->setIndenter(d->m_indenterCreator(doc->document()));
 
     if (d->m_syntaxHighlighterCreator)
         doc->setSyntaxHighlighter(d->m_syntaxHighlighterCreator());
diff --git a/src/plugins/texteditor/texteditor.h b/src/plugins/texteditor/texteditor.h
index 8615f15295..8ea2606bd2 100644
--- a/src/plugins/texteditor/texteditor.h
+++ b/src/plugins/texteditor/texteditor.h
@@ -27,6 +27,7 @@
 
 #include "texteditor_global.h"
 #include "blockrange.h"
+#include "indenter.h"
 #include "codeassist/assistenums.h"
 
 #include <coreplugin/editormanager/editormanager.h>
@@ -85,7 +86,6 @@ class CompletionSettings;
 class DisplaySettings;
 class ExtraEncodingSettings;
 class FontSettings;
-class Indenter;
 class MarginSettings;
 class StorageSettings;
 class TypingSettings;
@@ -635,7 +635,7 @@ public:
     using DocumentCreator = std::function<TextDocument *()>;
     using EditorWidgetCreator = std::function<TextEditorWidget *()>;
     using SyntaxHighLighterCreator = std::function<SyntaxHighlighter *()>;
-    using IndenterCreator = std::function<Indenter *()>;
+    using IndenterCreator = std::function<Indenter *(QTextDocument *)>;
     using AutoCompleterCreator = std::function<AutoCompleter *()>;
 
     void setDocumentCreator(const DocumentCreator &creator);
diff --git a/src/plugins/texteditor/texteditor.pro b/src/plugins/texteditor/texteditor.pro
index 9b698b7340..d9f99ccc9d 100644
--- a/src/plugins/texteditor/texteditor.pro
+++ b/src/plugins/texteditor/texteditor.pro
@@ -31,7 +31,7 @@ SOURCES += texteditorplugin.cpp \
     textdocumentlayout.cpp \
     completionsettings.cpp \
     normalindenter.cpp \
-    indenter.cpp \
+    textindenter.cpp \
     quickfix.cpp \
     syntaxhighlighter.cpp \
     highlighterutils.cpp \
@@ -135,7 +135,7 @@ HEADERS += texteditorplugin.h \
     textdocumentlayout.h \
     completionsettings.h \
     normalindenter.h \
-    indenter.h \
+    textindenter.h \
     quickfix.h \
     syntaxhighlighter.h \
     highlighterutils.h \
@@ -218,7 +218,8 @@ HEADERS += texteditorplugin.h \
     commentssettings.h \
     textstyles.h \
     formattexteditor.h \
-    command.h
+    command.h \
+    indenter.h
 
 FORMS += \
     displaysettingspage.ui \
diff --git a/src/plugins/texteditor/texteditor.qbs b/src/plugins/texteditor/texteditor.qbs
index 052a8f13fb..01fbcc68ab 100644
--- a/src/plugins/texteditor/texteditor.qbs
+++ b/src/plugins/texteditor/texteditor.qbs
@@ -88,7 +88,6 @@ Project {
             "icodestylepreferences.h",
             "icodestylepreferencesfactory.cpp",
             "icodestylepreferencesfactory.h",
-            "indenter.cpp",
             "indenter.h",
             "ioutlinewidget.h",
             "linenumberfilter.cpp",
@@ -143,6 +142,8 @@ Project {
             "texteditorplugin.h",
             "texteditorsettings.cpp",
             "texteditorsettings.h",
+            "textindenter.cpp",
+            "textindenter.h",
             "textmark.cpp",
             "textmark.h",
             "textstyles.h",
diff --git a/src/plugins/texteditor/indenter.cpp b/src/plugins/texteditor/textindenter.cpp
index 6f0dce63cf..bca7b1ae18 100644
--- a/src/plugins/texteditor/indenter.cpp
+++ b/src/plugins/texteditor/textindenter.cpp
@@ -23,30 +23,32 @@
 **
 ****************************************************************************/
 
-#include "indenter.h"
-#include "tabsettings.h"
-#include "textdocumentlayout.h"
+#include "textindenter.h"
 
 #include <QTextDocument>
 #include <QTextCursor>
 
 using namespace TextEditor;
 
-Indenter::Indenter() = default;
+TextIndenter::TextIndenter(QTextDocument *doc)
+    : Indenter(doc)
+{}
 
-Indenter::~Indenter() = default;
+TextIndenter::~TextIndenter() = default;
 
-bool Indenter::isElectricCharacter(const QChar &) const
+IndentationForBlock TextIndenter::indentationForBlocks(const QVector<QTextBlock> &blocks,
+                                                       const TabSettings &tabSettings)
 {
-    return false;
+    IndentationForBlock ret;
+    for (QTextBlock block : blocks)
+        ret.insert(block.blockNumber(), indentFor(block, tabSettings));
+    return ret;
 }
 
-void Indenter::indentBlock(QTextDocument *doc,
-                           const QTextBlock &block,
-                           const QChar &typedChar,
-                           const TabSettings &tabSettings)
+void TextIndenter::indentBlock(const QTextBlock &block,
+                               const QChar &typedChar,
+                               const TabSettings &tabSettings)
 {
-    Q_UNUSED(doc);
     Q_UNUSED(typedChar);
     const int indent = indentFor(block, tabSettings);
     if (indent < 0)
@@ -54,41 +56,39 @@ void Indenter::indentBlock(QTextDocument *doc,
     tabSettings.indentLine(block, indent);
 }
 
-void Indenter::indent(QTextDocument *doc,
-                      const QTextCursor &cursor,
-                      const QChar &typedChar,
-                      const TabSettings &tabSettings,
-                      bool /*autoTriggered*/)
+void TextIndenter::indent(const QTextCursor &cursor,
+                          const QChar &typedChar,
+                          const TabSettings &tabSettings)
 {
     if (cursor.hasSelection()) {
-        QTextBlock block = doc->findBlock(cursor.selectionStart());
-        const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
+        QTextBlock block = m_doc->findBlock(cursor.selectionStart());
+        const QTextBlock end = m_doc->findBlock(cursor.selectionEnd()).next();
         do {
-            indentBlock(doc, block, typedChar, tabSettings);
+            indentBlock(block, typedChar, tabSettings);
             block = block.next();
         } while (block.isValid() && block != end);
     } else {
-        indentBlock(doc, cursor.block(), typedChar, tabSettings);
+        indentBlock(cursor.block(), typedChar, tabSettings);
     }
 }
 
-void Indenter::reindent(QTextDocument *doc, const QTextCursor &cursor, const TabSettings &tabSettings)
+void TextIndenter::reindent(const QTextCursor &cursor, const TabSettings &tabSettings)
 {
     if (cursor.hasSelection()) {
-        QTextBlock block = doc->findBlock(cursor.selectionStart());
-        const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
+        QTextBlock block = m_doc->findBlock(cursor.selectionStart());
+        const QTextBlock end = m_doc->findBlock(cursor.selectionEnd()).next();
 
         // skip empty blocks
         while (block.isValid() && block != end) {
             QString bt = block.text();
             if (tabSettings.firstNonSpace(bt) < bt.size())
                 break;
-            indentBlock(doc, block, QChar::Null, tabSettings);
+            indentBlock(block, QChar::Null, tabSettings);
             block = block.next();
         }
 
         int previousIndentation = tabSettings.indentationColumn(block.text());
-        indentBlock(doc, block, QChar::Null, tabSettings);
+        indentBlock(block, QChar::Null, tabSettings);
         int currentIndentation = tabSettings.indentationColumn(block.text());
         int delta = currentIndentation - previousIndentation;
 
@@ -98,40 +98,17 @@ void Indenter::reindent(QTextDocument *doc, const QTextCursor &cursor, const Tab
             block = block.next();
         }
     } else {
-        indentBlock(doc, cursor.block(), QChar::Null, tabSettings);
+        indentBlock(cursor.block(), QChar::Null, tabSettings);
     }
 }
 
-Replacements Indenter::format(QTextDocument *doc,
-                              const Utils::FileName & /*fileName*/,
-                              const QTextCursor &cursor,
-                              const TabSettings &tabSettings)
+Replacements TextIndenter::format(const QTextCursor &cursor, const TabSettings &tabSettings)
 {
-    indent(doc, cursor, QChar::Null, tabSettings);
+    indent(cursor, QChar::Null, tabSettings);
     return Replacements();
 }
 
-void Indenter::setCodeStylePreferences(ICodeStylePreferences *)
-{
-
-}
-
-void Indenter::invalidateCache(QTextDocument *)
-{
-}
-
-int Indenter::indentFor(const QTextBlock &block, const TabSettings &tabSettings)
-{
-    Q_UNUSED(block)
-    Q_UNUSED(tabSettings)
-    return -1;
-}
-
-IndentationForBlock Indenter::indentationForBlocks(const QVector<QTextBlock> &blocks,
-                                                   const TabSettings &tabSettings)
+Utils::optional<TabSettings> TextIndenter::tabSettings() const
 {
-    IndentationForBlock ret;
-    foreach (QTextBlock block, blocks)
-        ret.insert(block.blockNumber(), indentFor(block, tabSettings));
-    return ret;
+    return Utils::optional<TabSettings>();
 }
diff --git a/src/plugins/texteditor/textindenter.h b/src/plugins/texteditor/textindenter.h
new file mode 100644
index 0000000000..8a87b9214d
--- /dev/null
+++ b/src/plugins/texteditor/textindenter.h
@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** 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 "texteditor_global.h"
+
+#include "indenter.h"
+#include "tabsettings.h"
+
+QT_BEGIN_NAMESPACE
+class QTextDocument;
+class QTextCursor;
+class QChar;
+QT_END_NAMESPACE
+
+namespace TextEditor {
+
+class TEXTEDITOR_EXPORT TextIndenter : public Indenter
+{
+public:
+    explicit TextIndenter(QTextDocument *doc);
+    ~TextIndenter() override;
+
+    IndentationForBlock indentationForBlocks(const QVector<QTextBlock> &blocks,
+                                             const TabSettings &tabSettings) override;
+    void indentBlock(const QTextBlock &block,
+                     const QChar &typedChar,
+                     const TabSettings &tabSettings) override;
+
+    void indent(const QTextCursor &cursor,
+                const QChar &typedChar,
+                const TabSettings &tabSettings) override;
+
+    Replacements format(const QTextCursor &cursor, const TabSettings &tabSettings) override;
+
+    void reindent(const QTextCursor &cursor, const TabSettings &tabSettings) override;
+    Utils::optional<TabSettings> tabSettings() const override;
+};
+
+} // namespace TextEditor
diff --git a/src/shared/clang/clang_installation.pri b/src/shared/clang/clang_installation.pri
index acd555dd06..4629aedaab 100644
--- a/src/shared/clang/clang_installation.pri
+++ b/src/shared/clang/clang_installation.pri
@@ -153,11 +153,20 @@ LLVM_VERSION = $$extractVersion($$output)
 !isEmpty(LLVM_VERSION) {
     versionIsAtLeast($$LLVM_VERSION, 7, 0, 0): {
         CLANGFORMAT_LIBS=-lclangFormat -lclangToolingInclusions -lclangToolingCore -lclangRewrite -lclangLex -lclangBasic
-        win32:CLANGFORMAT_LIBS += -lversion
+        ALL_CLANG_LIBS=-lclangFormat -lclangToolingInclusions -lclangTooling -lclangToolingCore \
+                       -lclangRewrite -lclangIndex -lclangFrontend -lclangParse -lclangSerialization \
+                       -lclangSema -lclangEdit -lclangAnalysis -lclangDriver -lclangDynamicASTMatchers \
+                       -lclangASTMatchers -lclangAST -lclangLex -lclangBasic
     } else:versionIsAtLeast($$LLVM_VERSION, 6, 0, 0): {
         CLANGFORMAT_LIBS=-lclangFormat -lclangToolingCore -lclangRewrite -lclangLex -lclangBasic
-        win32:CLANGFORMAT_LIBS += -lversion
+        ALL_CLANG_LIBS=-lclangFormat -lclangTooling -lclangToolingCore \
+                       -lclangRewrite -lclangIndex -lclangFrontend -lclangParse -lclangSerialization \
+                       -lclangSema -lclangEdit -lclangAnalysis -lclangDriver -lclangDynamicASTMatchers \
+                       -lclangASTMatchers -lclangAST -lclangLex -lclangBasic
     }
+
+    win32:CLANGFORMAT_LIBS += -lversion
+    win32:ALL_CLANG_LIBS += -lversion
 }
 
 isEmpty(LLVM_VERSION) {
@@ -223,6 +232,7 @@ isEmpty(LLVM_VERSION) {
     }
 
     CLANGFORMAT_LIBS = -L$${LLVM_LIBDIR} $$CLANGFORMAT_LIBS $$LLVM_STATIC_LIBS
+    ALL_CLANG_LIBS = -L$${LLVM_LIBDIR} $$ALL_CLANG_LIBS $$CLANG_LIB $$LLVM_STATIC_LIBS
 
     contains(QMAKE_DEFAULT_INCDIRS, $$LLVM_INCLUDEPATH): LLVM_INCLUDEPATH =