qqmldomstringdumper.cpp

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// Copyright (C) 2020 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
 
#include "qqmldomstringdumper_p.h"
#include <QtCore/QDebug>
 
QT_BEGIN_NAMESPACE
 
namespace QQmlJS {
namespace Dom {
 
QString dumperToString(Dumper writer)
{
    QString s;
    QTextStream d(&s);
    writer([&d](QStringView s){ d << s; });
    d.flush();
    return s;
}
 
void sinkEscaped(Sink sink, QStringView s, EscapeOptions options) {
    if (options == EscapeOptions::OuterQuotes)
        sink(u"\"");
    int it0=0;
    for (int it = 0; it < s.size();++it) {
        QChar c=s[it];
        bool noslash = c != QLatin1Char('\\');
        bool noquote = c != QLatin1Char('"');
        bool nonewline = c != QLatin1Char('\n');
        bool noreturn = c != QLatin1Char('\r');
        if (noslash && noquote && nonewline && noreturn)
            continue;
        sink(s.mid(it0, it - it0));
        it0 = it + 1;
        if (!noslash)
            sink(u"\\\\");
        else if (!noquote)
            sink(u"\\\"");
        else if (!nonewline)
            sink(u"\\n");
        else if (!noreturn)
            sink(u"\\r");
        else
            Q_ASSERT(0);
    }
    sink(s.mid(it0, s.size() - it0));
    if (options == EscapeOptions::OuterQuotes)
        sink(u"\"");
}
 
void dumpErrorLevel(Sink s, ErrorLevel level)
{
    switch (level) {
    case ErrorLevel::Debug:
        s(u"Debug");
        break;
    case ErrorLevel::Info:
        s(u"Info");
        break;
    case ErrorLevel::Warning:
        s(u"Warning");
        break;
    case ErrorLevel::Error:
        s(u"Error");
        break;
    case ErrorLevel::Fatal:
        s(u"Fatal");
        break;
    }
 
}
 
void dumperToQDebug(Dumper dumper, QDebug debug)
{
    QDebug & d = debug.noquote().nospace();
    dumper([&d](QStringView s){
        d << s;
    });
}
 
void dumperToQDebug(Dumper dumper, ErrorLevel level)
{
    QDebug d = qDebug().noquote().nospace();
    switch (level) {
    case ErrorLevel::Debug:
        break;
    case ErrorLevel::Info:
        d = qInfo().noquote().nospace();
        break;
    case ErrorLevel::Warning:
        d = qWarning().noquote().nospace();
        break;
    case ErrorLevel::Error:
    case ErrorLevel::Fatal: // should be handled differently (avoid allocations...), we try to catch them before ending up here
        d = qCritical().noquote().nospace();
        break;
    }
    dumper([&d](QStringView s){
        d << s;
    });
}
 
void sinkIndent(Sink s, int indent)
{
    if (indent > 0) {
        QStringView spaces = u"                     ";
        while (indent > spaces.size()) {
            s(spaces);
            indent -= spaces.size();
        }
        s(spaces.left(indent));
    }
}
 
void sinkNewline(Sink s, int indent)
{
    s(u"\n");
    if (indent > 0)
        sinkIndent(s, indent);
}
 
QDebug operator<<(QDebug d, Dumper dumper)
{
    QDebug dd = d.noquote().nospace();
    dumper([&dd](QStringView s) { dd << s; });
    return d;
}
 
} // end namespace Dom
} // end namespace QQmlJS
 
QT_END_NAMESPACE