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genbindings: further work on exceptions

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This commit is contained in:
mappu 2024-08-19 19:42:34 +12:00
parent d92e87b49d
commit f9a9b4a9b4
3 changed files with 91 additions and 24 deletions
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32
cmd/genbindings/clang2il.go
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@ -510,8 +510,10 @@ func parseSingleTypeString(p string) CppParameter {
tokens := strings.Split(strings.TrimSpace(p), " ")
insert := CppParameter{}
for _, tok := range tokens {
if tok == "" {
continue // extra space
} else if tok == "const" || tok == "*const" {
// *const happens for QPixmap, clang reports `const char *const *` which
// isn't even valid syntax
@ -519,17 +521,41 @@ func parseSingleTypeString(p string) CppParameter {
} else if tok == "&" { // U+0026
insert.ByRef = true
} else if tok == "*" {
insert.Pointer = true
} else if tok == "WId" {
// Transform typedef
insert.ParameterType += " uintptr_t"
} else if tok == "Q_PID" {
// Transform typedef
// This is a uint64 PID on Linux/mac and a PROCESS_INFORMATION* on Windows
// A uintptr should be tolerable for both cases until we do better
// @ref https://doc.qt.io/qt-5/qprocess.html#Q_PID-typedef
insert.ParameterType += " uintptr_t"
} else if tok == "QStringList" {
insert.ParameterType += " QList<QString>"
} else if len(tok) > 4 && strings.HasSuffix(tok, "List") && tok != "QTextList" {
} else if len(tok) > 4 && strings.HasSuffix(tok, "List") {
// Classes ending in --List are usually better represented as a QList
// type directly, so that the binding uses proper Go slices
// Typedef e.g. QObjectList
// QObjectList is a pointer, but QStringList is a whole custom class
insert.ParameterType += " QList<" + tok[0:len(tok)-4] + " *>"
switch tok {
case "QModelIndexList":
// These types are defined as a QList of values
insert.ParameterType += " QList<QModelIndex>"
case "QTextList":
// This is really a custom class, preserve as-is
insert.ParameterType += " " + tok
default:
// These types are defined as a QList of pointers.
// QList<QFoo*>. This is the most common case
insert.ParameterType += " QList<" + tok[0:len(tok)-4] + " *>"
}
} else {
// Valid part of the type name
insert.ParameterType += " " + tok

2
cmd/genbindings/emitgo.go
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@ -11,7 +11,7 @@ import (
func goReservedWord(s string) bool {
switch s {
case "default", "const", "func", "var", "type", "len", "new", "copy", "import", "range":
case "default", "const", "func", "var", "type", "len", "new", "copy", "import", "range", "string", "map", "int", "select":
return true
default:
return false

81
cmd/genbindings/exceptions.go
View File

@ -1,10 +1,41 @@
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 {
case // QtCore
"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
"qaccessible.h", // Almost everything in here is virtual
"qaccessiblebridge.h", // Almost everything in here is virtual
"qaccessibleobject.h", // Almost everything in here is virtual
"qaccessibleplugin.h", // Almost everything in here is virtual
"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
}
@ -53,10 +84,11 @@ func AllowClass(className string) bool {
switch className {
case
"QException", // Extends std::exception, too hard
"QItemSelection", // Extends a QList<>, too hard
"QXmlStreamAttributes", // Extends a QList<>, too hard
"QPolygon", "QPolygonF": // Extends a QVector<QPoint> template class, too hard
"QTextStreamManipulator", // Only seems to contain garbage methods
"QException", // Extends std::exception, too hard
"QItemSelection", // Extends a QList<>, too hard
"QXmlStreamAttributes", // Extends a QList<>, too hard
"QPolygon", "QPolygonF": // Extends a QVector<QPoint> template class, too hard
return false
}
@ -80,6 +112,10 @@ func CheckComplexity(p CppParameter) error {
}
}
if strings.HasPrefix(p.ParameterType, "StringResult<") {
return ErrTooComplex // e.g. qcborstreamreader.h
}
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
@ -88,22 +124,27 @@ func CheckComplexity(p CppParameter) error {
"QLatin1String", "QStringView", // e.g. QColor constructors and QColor::SetNamedColor() overloads. These are usually optional alternatives to QString
"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
"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
"QPlatformPixmap", // e.g. qpixmap.h. as below
"QPlatformScreen", // e.g. qscreen.h. as below
"QPlatformSurface", // e.g. qsurface.h. as below
"QPlatformMenu": // e.g. QMenu_PlatformMenu. Defined in the QPA, could probably expose as uintptr
"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
"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
"QVariantMap", // e.g. qcbormap.h
"QVariantHash", // e.g. qcbormap.h
"QPlatformPixmap", // e.g. qpixmap.h. as below
"QPlatformScreen", // e.g. qscreen.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
}