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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQMLDOMLINEWRITER_P
#define QQMLDOMLINEWRITER_P
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qqmldom_global.h"
#include "qqmldomstringdumper_p.h"
#include <QtQml/private/qqmljssourcelocation_p.h>
#include <QtCore/QObject>
#include <QtCore/QAtomicInt>
#include <QtCore/QMap>
#include <functional>
QT_BEGIN_NAMESPACE
namespace QQmlJS {
namespace Dom {
class IndentInfo
{
public:
QStringView string;
QStringView trailingString;
int nNewlines = 0;
int column = 0;
IndentInfo(QStringView line, int tabSize, int initialColumn = 0)
{
string = line;
int fixup = 0;
if (initialColumn < 0) // we do not want % of negative numbers
fixup = (-initialColumn + tabSize - 1) / tabSize * tabSize;
column = initialColumn + fixup;
const QChar tab = QLatin1Char('\t');
int iStart = 0;
int len = line.size();
for (int i = 0; i < len; i++) {
if (line[i] == tab)
column = ((column / tabSize) + 1) * tabSize;
else if (line[i] == QLatin1Char('\n')
|| (line[i] == QLatin1Char('\r')
&& (i + 1 == len || line[i + 1] != QLatin1Char('\n')))) {
iStart = i + 1;
++nNewlines;
column = 0;
} else if (!line[i].isLowSurrogate())
column++;
}
column -= fixup;
trailingString = line.mid(iStart);
}
};
class QMLDOM_EXPORT FormatOptions
{
public:
int tabSize = 4;
int indentSize = 4;
bool useTabs = false;
};
class QMLDOM_EXPORT LineWriterOptions
{
Q_GADGET
public:
enum class LineEndings { Unix, Windows, OldMacOs };
Q_ENUM(LineEndings)
enum class TrailingSpace { Preserve, Remove };
Q_ENUM(TrailingSpace)
enum class Update { None = 0, Expressions = 0x1, Locations = 0x2, All = 0x3, Default = All };
Q_ENUM(Update)
Q_DECLARE_FLAGS(Updates, Update)
enum class AttributesSequence { Normalize, Preserve };
Q_ENUM(AttributesSequence)
int maxLineLength = -1;
int strongMaxLineExtra = 20;
int minContentLength = 10;
#if defined (Q_OS_WIN)
LineEndings lineEndings = LineEndings::Windows;
#else
LineEndings lineEndings = LineEndings::Unix;
#endif
TrailingSpace codeTrailingSpace = TrailingSpace::Remove;
TrailingSpace commentTrailingSpace = TrailingSpace::Remove;
TrailingSpace stringTrailingSpace = TrailingSpace::Preserve;
FormatOptions formatOptions;
Updates updateOptions = Update::Default;
AttributesSequence attributesSequence = AttributesSequence::Normalize;
bool objectsSpacing = false;
bool functionsSpacing = false;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(LineWriterOptions::Updates)
using PendingSourceLocationId = int;
using PendingSourceLocationIdAtomic = QAtomicInt;
class LineWriter;
class QMLDOM_EXPORT PendingSourceLocation
{
Q_GADGET
public:
quint32 utf16Start() const;
quint32 utf16End() const;
void changeAtOffset(quint32 offset, qint32 change, qint32 colChange, qint32 lineChange);
void commit();
PendingSourceLocationId id;
SourceLocation value;
SourceLocation *toUpdate = nullptr;
std::function<void(SourceLocation)> updater = nullptr;
bool open = true;
};
class QMLDOM_EXPORT LineWriter
{
Q_GADGET
public:
enum class TextAddType {
Normal,
Extra,
Newline,
NewlineSplit,
NewlineExtra,
PartialCommit,
Eof
};
LineWriter(const SinkF &innerSink, const QString &fileName,
const LineWriterOptions &options = LineWriterOptions(), int lineNr = 0,
int columnNr = 0, int utf16Offset = 0, const QString ¤tLine = QString());
std::function<void(QStringView)> sink()
{
return [this](QStringView s) { this->write(s); };
}
virtual ~LineWriter() { }
QList<SinkF> innerSinks() { return m_innerSinks; }
void addInnerSink(const SinkF &s) { m_innerSinks.append(s); }
LineWriter &ensureNewline(int nNewlines = 1, TextAddType t = TextAddType::Extra);
LineWriter &ensureSpace(TextAddType t = TextAddType::Extra);
LineWriter &ensureSpace(QStringView space, TextAddType t = TextAddType::Extra);
LineWriter &newline()
{
write(u"\n");
return *this;
}
LineWriter &space()
{
write(u" ");
return *this;
}
LineWriter &write(QStringView v, TextAddType tType = TextAddType::Normal);
LineWriter &write(QStringView v, SourceLocation *toUpdate)
{
auto pLoc = startSourceLocation(toUpdate);
write(v);
endSourceLocation(pLoc);
return *this;
}
void commitLine(const QString &eol, TextAddType t = TextAddType::Normal, int untilChar = -1);
void flush();
void eof(bool ensureNewline = true);
SourceLocation committedLocation() const;
PendingSourceLocationId startSourceLocation(SourceLocation *);
PendingSourceLocationId startSourceLocation(std::function<void(SourceLocation)>);
void endSourceLocation(PendingSourceLocationId);
quint32 counter() const { return m_counter; }
int addTextAddCallback(std::function<bool(LineWriter &, TextAddType)> callback);
bool removeTextAddCallback(int i) { return m_textAddCallbacks.remove(i); }
int addNewlinesAutospacerCallback(int nLines);
void handleTrailingSpace(LineWriterOptions::TrailingSpace s);
void setLineIndent(int indentAmount);
QString fileName() const { return m_fileName; }
const QString ¤tLine() const { return m_currentLine; }
const LineWriterOptions &options() const { return m_options; }
virtual void lineChanged() { }
virtual void reindentAndSplit(const QString &eol, bool eof = false);
virtual void willCommit() { }
private:
Q_DISABLE_COPY_MOVE(LineWriter)
protected:
void changeAtOffset(quint32 offset, qint32 change, qint32 colChange, qint32 lineChange);
QString eolToWrite() const;
SourceLocation currentSourceLocation() const;
int column(int localIndex);
void textAddCallback(TextAddType t);
QList<SinkF> m_innerSinks;
QString m_fileName;
int m_lineNr = 0;
int m_columnNr = 0; // columnNr (starts at 0) of committed data
int m_lineUtf16Offset = 0; // utf16 offset since last newline (what is typically stores as
// SourceLocation::startColumn
int m_currentColumnNr = 0; // current columnNr (starts at 0)
int m_utf16Offset = 0; // utf16 offset since start for committed data
QString m_currentLine;
LineWriterOptions m_options;
PendingSourceLocationIdAtomic m_lastSourceLocationId;
QMap<PendingSourceLocationId, PendingSourceLocation> m_pendingSourceLocations;
QAtomicInt m_lastCallbackId;
QMap<int, std::function<bool(LineWriter &, TextAddType)>> m_textAddCallbacks;
quint32 m_counter = 0;
quint32 m_committedEmptyLines = 0x7FFFFFFF;
bool m_reindent = true;
};
} // namespace Dom
} // namespace QQmlJS
QT_END_NAMESPACE
#endif
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