miqt/cmd/genbindings/exceptions.go

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package main
import (
"path/filepath"
"strings"
)
func AllowHeader(fullpath string) bool {
fname := filepath.Base(fullpath)
if strings.HasSuffix(fname, `_impl.h`) {
return false // Not meant to be imported
}
fname_lc := strings.ToLower(fname)
if strings.Contains(fname_lc, `opengl`) || strings.Contains(fname_lc, `vulkan`) {
return false // Too hard
}
switch fname {
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case "qatomic_bootstrap.h",
"qatomic_cxx11.h",
"qatomic_msvc.h",
"qgenericatomic.h", // Clang error
"qt_windows.h", // Clang error
"qmaccocoaviewcontainer_mac.h", // Needs NSView* headers. TODO allow with darwin build tag
"qmacnativewidget_mac.h", // Needs NSView* headers. TODO allow with darwin build tag
"qstring.h", // QString does not exist in this binding
"qlist.h", // QList does not exist in this binding
"qvector.h": // QVector does not exist in this binding
return false
}
return true
}
func ImportHeaderForClass(className string) bool {
if className[0] != 'Q' {
return false
}
// TODO this could be implict by checking if files exist in known header paths
if strings.HasPrefix(className, "QPlatform") {
// e.g. QPlatformPixmap, QPlatformWindow, QPlatformScreen
// These classes don't have a <> version to include
return false
}
switch className {
case "QGraphicsEffectSource", // e.g. qgraphicseffect.h
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"QAbstractConcatenable", // qstringbuilder.h
"QTextEngine", // qtextlayout.h
"QText": // e.g. qtextcursor.h
return false
}
return true
}
func AllowClass(className string) bool {
if strings.HasSuffix(className, "Private") {
return false
}
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if strings.Contains(className, "QPrivateSignal") {
return false
}
switch className {
case
"QTextStreamManipulator", // Only seems to contain garbage methods
"QException", // Extends std::exception, too hard
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"QUnhandledException", // As above (child class)
"QItemSelection", // Extends a QList<>, too hard
"QXmlStreamAttributes", // Extends a QList<>, too hard
"QPolygon", "QPolygonF": // Extends a QVector<QPoint> template class, too hard
return false
}
return true
}
func CheckComplexity(p CppParameter, isReturnType bool) error {
if p.QMapOf() {
return ErrTooComplex // Example???
}
if p.QPairOf() {
return ErrTooComplex // e.g. QGradientStop
}
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if p.QSetOf() {
return ErrTooComplex // e.g. QStateMachine
}
if t, ok := p.QListOf(); ok {
if err := CheckComplexity(t, isReturnType); err != nil { // e.g. QGradientStops is a QVector<> (OK) of QGradientStop (not OK)
return err
}
}
if strings.Contains(p.ParameterType, "(*)") { // Function pointer.
return ErrTooComplex // e.g. QAccessible_InstallFactory
}
if strings.HasPrefix(p.ParameterType, "StringResult<") {
return ErrTooComplex // e.g. qcborstreamreader.h
}
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if strings.HasPrefix(p.ParameterType, "QGenericMatrix<") {
return ErrTooComplex // e.g. qmatrix4x4.h
}
if strings.HasPrefix(p.ParameterType, "std::") {
// std::initializer e.g. qcborarray.h
// std::string QByteArray->toStdString(). There are QString overloads already
// std::nullptr_t Qcborstreamwriter
// std::chrono::nanoseconds QDeadlineTimer_RemainingTimeAsDuration
// std::seed_seq QRandom
return ErrTooComplex
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}
if strings.Contains(p.ParameterType, `::reverse_iterator`) || strings.Contains(p.ParameterType, `::const_reverse_iterator`) {
return ErrTooComplex // e.g. qbytearray.h
}
if strings.Contains(p.ParameterType, `Iterator::value_type`) {
return ErrTooComplex // e.g. qcbormap
}
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if strings.Contains(p.ParameterType, `::QPrivate`) {
return ErrTooComplex // e.g. QAbstractItemModel::QPrivateSignal
}
// Some QFoo constructors take a QFooPrivate
if p.ParameterType[0] == 'Q' && strings.HasSuffix(p.ParameterType, "Private") && !isReturnType {
return ErrTooComplex
}
// If any parameters are QString*, skip the method
// QDebug constructor
// QXmlStreamWriter constructor
// QFile::moveToTrash
// QLockFile::getLockInfo
// QTextDecoder::toUnicode
// QTextStream::readLineInto
// QFileDialog::getOpenFileName selectedFilter* param
if p.ParameterType == "QString" && p.Pointer && !isReturnType { // Out-parameters
return ErrTooComplex
}
if p.IsFlagType() && p.Pointer && !isReturnType {
return ErrTooComplex // e.g. qformlayout. The cast doesn't survive through a pointer parameter
}
if p.ParameterType != "char" && p.Pointer && p.PointerCount >= 2 { // Out-parameters
return ErrTooComplex // e.g. QGraphicsItem_IsBlockedByModalPanel1
}
switch p.ParameterType {
case
"QList<QVariant>", // e.g. QVariant constructor - this has a deleted copy-constructor so we can't get it over the CABI boundary by value
"QPolygon", "QPolygonF", // QPolygon extends a template type
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"QGenericMatrix", "QMatrix3x3", // extends a template type
"QLatin1String", "QStringView", // e.g. QColor constructors and QColor::SetNamedColor() overloads. These are usually optional alternatives to QString
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"QStringRef", // e.g. QLocale::toLongLong and similar overloads. As above
"QGradientStop", "QGradientStops", // QPair<>-related types, but we can't see through the typedef to block based on QPair alone
"void **", // e.g. qobjectdefs.h QMetaObject->Activate()
"QGraphicsItem **", // e.g. QGraphicsItem::IsBlockedByModalPanel() overload
"char *&", // e.g. QDataStream.operator<<()
"qfloat16", // e.g. QDataStream - there is no such half-float type in C or Go
"char16_t", // e.g. QChar() constructor overload, just unnecessary
"char32_t", // e.g. QDebug().operator<< overload, unnecessary
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"wchar_t", // e.g. qstringview.h overloads, unnecessary
"QStringView::const_pointer", // e.g. qstringview.h data()
"QStringView::const_iterator", // e.g. qstringview.h
"QStringView::value_type", // e.g. qstringview.h
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"FILE", // e.g. qfile.h constructors
"qInternalCallback", // e.g. qnamespace.h
"picture_io_handler", // e.g. QPictureIO::DefineIOHandler callback function
"QPlatformNativeInterface", // e.g. QGuiApplication::platformNativeInterface(). Private type, could probably expose as uintptr. n.b. Changes in Qt6
"QFunctionPointer", // e.g. QGuiApplication_PlatformFunction
"QGraphicsEffectSource", // e.g. used by qgraphicseffect.h, but the definition is in ????
"QAbstractUndoItem", // e.g. Defined in qtextdocument.h
"QTextObjectInterface", // e.g. qabstracttextdocumentlayout.h
"QXmlStreamEntityDeclarations", // e.g. qxmlstream.h. The class definition was blacklisted for ???? reason so don't allow it as a parameter either
"QXmlStreamNamespaceDeclarations", // e.g. qxmlstream.h. As above
"QXmlStreamNotationDeclarations", // e.g. qxmlstream.h. As above
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"QXmlStreamAttributes", // e.g. qxmlstream.h
"QVariantMap", // e.g. qcbormap.h
"QVariantHash", // e.g. qcbormap.h
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"QCborTag", // e.g. qcborstreamreader.h.TODO Needs support for enums
"QCborSimpleType", // e.g. qcborstreamreader.h TODO Needs support for enums
"QCborKnownTags", // e.g. qcborstreamreader.h TODO Needs support for enums
"QCborNegativeInteger", // e.g. qcborstreamreader.h TODO Needs support for enums
"QtMsgType", // e.g. qdebug.h TODO Needs support for enums
"QTextStreamFunction", // e.g. qdebug.h
"QFactoryInterface", // qfactoryinterface.h
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"QItemSelection", // used by qabstractproxymodel.h, also blocked in AllowClass above, class extends a List<T>
"QTextStreamManipulator", // used by qdebug.h, also blocked in AllowClass above
"QException", // used by qfutureinterface.h, also blocked in AllowClass above
"QTextEngine", // used by qtextlayout.h, also blocked in ImportHeaderForClass above
"QVulkanInstance", // e.g. qwindow.h. Not tackling vulkan yet
"QPlatformBackingStore", // e.g. qbackingstore.h, as below
"QPlatformMenuBar", // e.g. qfutureinterface.h, as below
"QPlatformOffscreenSurface", // e.g. qoffscreensurface.h, as below
"QPlatformPixmap", // e.g. qpixmap.h. as below
"QPlatformScreen", // e.g. qscreen.h. as below
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"QPlatformWindow", // e.g. qwindow.h, as below
"QPlatformSurface", // e.g. qsurface.h. as below
"QPlatformMenu": // e.g. QMenu_PlatformMenu. Defined in the QPA, could probably expose as uintptr
return ErrTooComplex
}
if p.ParameterType == "void" && p.Pointer {
return ErrTooComplex // e.g. qobjectdefs.h QMetaObject->InvokeOnGadget(). TODO represent as uintptr
}
// Should be OK
return nil
}