qt-everywhere-src-5.15.1/qtbase/src/plugins/platforms/wasm/qwasmstring.cpp

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** This file is part of the plugins of the Qt Toolkit.
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#include "qwasmstring.h"

QT_BEGIN_NAMESPACE

using namespace emscripten;

val QWasmString::fromQString(const QString &str)
{
    static const val UTF16ToString(
        val::global("Module")["UTF16ToString"]);

    auto ptr = quintptr(str.utf16());
    return UTF16ToString(val(ptr));
}

QString QWasmString::toQString(const val &v)
{
    QString result;
    if (!v.isString())
        return result;

    static const val stringToUTF16(
        val::global("Module")["stringToUTF16"]);
    static const val length("length");

    int len = v[length].as<int>();
    result.resize(len);
    auto ptr = quintptr(result.utf16());
    stringToUTF16(v, val(ptr), val((len + 1) * 2));
    return result;
}

QT_END_NAMESPACE