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generator.cpp
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generator.cpp
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// Copyright (C) 2020 The Qt Company Ltd.
// Copyright (C) 2019 Olivier Goffart <ogoffart@woboq.com>
// Copyright (C) 2018 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "generator.h"
#include "cbordevice.h"
#include "outputrevision.h"
#include "utils.h"
#include <QtCore/qmetatype.h>
#include <QtCore/qjsondocument.h>
#include <QtCore/qjsonobject.h>
#include <QtCore/qjsonvalue.h>
#include <QtCore/qjsonarray.h>
#include <QtCore/qplugin.h>
#include <QtCore/qstringview.h>
#include <math.h>
#include <stdio.h>
#include <private/qmetaobject_p.h> //for the flags.
#include <private/qplugin_p.h> //for the flags.
QT_BEGIN_NAMESPACE
using namespace QtMiscUtils;
uint nameToBuiltinType(const QByteArray &name)
{
if (name.isEmpty())
return 0;
uint tp = qMetaTypeTypeInternal(name.constData());
return tp < uint(QMetaType::User) ? tp : uint(QMetaType::UnknownType);
}
/*
Returns \c true if the type is a built-in type.
*/
bool isBuiltinType(const QByteArray &type)
{
int id = qMetaTypeTypeInternal(type.constData());
if (id == QMetaType::UnknownType)
return false;
return (id < QMetaType::User);
}
static const char *metaTypeEnumValueString(int type)
{
#define RETURN_METATYPENAME_STRING(MetaTypeName, MetaTypeId, RealType) \
case QMetaType::MetaTypeName: return #MetaTypeName;
switch (type) {
QT_FOR_EACH_STATIC_TYPE(RETURN_METATYPENAME_STRING)
}
#undef RETURN_METATYPENAME_STRING
return nullptr;
}
Generator::Generator(Moc *moc, ClassDef *classDef, const QList<QByteArray> &metaTypes,
const QHash<QByteArray, QByteArray> &knownQObjectClasses,
const QHash<QByteArray, QByteArray> &knownGadgets, FILE *outfile,
bool requireCompleteTypes)
: parser(moc),
out(outfile),
cdef(classDef),
metaTypes(metaTypes),
knownQObjectClasses(knownQObjectClasses),
knownGadgets(knownGadgets),
requireCompleteTypes(requireCompleteTypes)
{
if (cdef->superclassList.size())
purestSuperClass = cdef->superclassList.constFirst().classname;
}
static inline qsizetype lengthOfEscapeSequence(const QByteArray &s, qsizetype i)
{
if (s.at(i) != '\\' || i >= s.size() - 1)
return 1;
const qsizetype startPos = i;
++i;
char ch = s.at(i);
if (ch == 'x') {
++i;
while (i < s.size() && isHexDigit(s.at(i)))
++i;
} else if (isOctalDigit(ch)) {
while (i < startPos + 4
&& i < s.size()
&& isOctalDigit(s.at(i))) {
++i;
}
} else { // single character escape sequence
i = qMin(i + 1, s.size());
}
return i - startPos;
}
// Prints \a s to \a out, breaking it into lines of at most ColumnWidth. The
// opening and closing quotes are NOT included (it's up to the caller).
static void printStringWithIndentation(FILE *out, const QByteArray &s)
{
static constexpr int ColumnWidth = 72;
const qsizetype len = s.size();
qsizetype idx = 0;
do {
qsizetype spanLen = qMin(ColumnWidth - 2, len - idx);
// don't cut escape sequences at the end of a line
const qsizetype backSlashPos = s.lastIndexOf('\\', idx + spanLen - 1);
if (backSlashPos >= idx) {
const qsizetype escapeLen = lengthOfEscapeSequence(s, backSlashPos);
spanLen = qBound(spanLen, backSlashPos + escapeLen - idx, len - idx);
}
fprintf(out, "\n \"%.*s\"", int(spanLen), s.constData() + idx);
idx += spanLen;
} while (idx < len);
}
void Generator::strreg(const QByteArray &s)
{
if (!strings.contains(s))
strings.append(s);
}
int Generator::stridx(const QByteArray &s)
{
int i = int(strings.indexOf(s));
Q_ASSERT_X(i != -1, Q_FUNC_INFO, "We forgot to register some strings");
return i;
}
// Returns the sum of all parameters (including return type) for the given
// \a list of methods. This is needed for calculating the size of the methods'
// parameter type/name meta-data.
static int aggregateParameterCount(const QList<FunctionDef> &list)
{
int sum = 0;
for (const FunctionDef &def : list)
sum += int(def.arguments.size()) + 1; // +1 for return type
return sum;
}
bool Generator::registerableMetaType(const QByteArray &propertyType)
{
if (metaTypes.contains(propertyType))
return true;
if (propertyType.endsWith('*')) {
QByteArray objectPointerType = propertyType;
// The objects container stores class names, such as 'QState', 'QLabel' etc,
// not 'QState*', 'QLabel*'. The propertyType does contain the '*', so we need
// to chop it to find the class type in the known QObjects list.
objectPointerType.chop(1);
if (knownQObjectClasses.contains(objectPointerType))
return true;
}
static const QList<QByteArray> smartPointers = QList<QByteArray>()
#define STREAM_SMART_POINTER(SMART_POINTER) << #SMART_POINTER
QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(STREAM_SMART_POINTER)
#undef STREAM_SMART_POINTER
;
for (const QByteArray &smartPointer : smartPointers) {
QByteArray ba = smartPointer + "<";
if (propertyType.startsWith(ba) && !propertyType.endsWith("&"))
return knownQObjectClasses.contains(propertyType.mid(smartPointer.size() + 1, propertyType.size() - smartPointer.size() - 1 - 1));
}
static const QList<QByteArray> oneArgTemplates = QList<QByteArray>()
#define STREAM_1ARG_TEMPLATE(TEMPLATENAME) << #TEMPLATENAME
QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(STREAM_1ARG_TEMPLATE)
#undef STREAM_1ARG_TEMPLATE
;
for (const QByteArray &oneArgTemplateType : oneArgTemplates) {
const QByteArray ba = oneArgTemplateType + "<";
if (propertyType.startsWith(ba) && propertyType.endsWith(">")) {
const qsizetype argumentSize = propertyType.size() - ba.size()
// The closing '>'
- 1
// templates inside templates have an extra whitespace char to strip.
- (propertyType.at(propertyType.size() - 2) == ' ' ? 1 : 0 );
const QByteArray templateArg = propertyType.sliced(ba.size(), argumentSize);
return isBuiltinType(templateArg) || registerableMetaType(templateArg);
}
}
return false;
}
/* returns \c true if name and qualifiedName refers to the same name.
* If qualified name is "A::B::C", it returns \c true for "C", "B::C" or "A::B::C" */
static bool qualifiedNameEquals(const QByteArray &qualifiedName, const QByteArray &name)
{
if (qualifiedName == name)
return true;
const qsizetype index = qualifiedName.indexOf("::");
if (index == -1)
return false;
return qualifiedNameEquals(qualifiedName.mid(index+2), name);
}
static QByteArray generateQualifiedClassNameIdentifier(const QByteArray &identifier)
{
QByteArray qualifiedClassNameIdentifier = identifier;
// Remove ':'s in the name, but be sure not to create any illegal
// identifiers in the process. (Don't replace with '_', because
// that will create problems with things like NS_::_class.)
qualifiedClassNameIdentifier.replace("::", "SCOPE");
// Also, avoid any leading/trailing underscores (we'll concatenate
// the generated name with other prefixes/suffixes, and these latter
// may already include an underscore, leading to two underscores)
qualifiedClassNameIdentifier = "CLASS" + qualifiedClassNameIdentifier + "ENDCLASS";
return qualifiedClassNameIdentifier;
}
void Generator::generateCode()
{
bool isQObject = (cdef->classname == "QObject");
bool isConstructible = !cdef->constructorList.isEmpty();
// filter out undeclared enumerators and sets
{
QList<EnumDef> enumList;
for (EnumDef def : std::as_const(cdef->enumList)) {
if (cdef->enumDeclarations.contains(def.name)) {
enumList += def;
}
def.enumName = def.name;
QByteArray alias = cdef->flagAliases.value(def.name);
if (cdef->enumDeclarations.contains(alias)) {
def.name = alias;
enumList += def;
}
}
cdef->enumList = enumList;
}
//
// Register all strings used in data section
//
strreg(cdef->qualified);
registerClassInfoStrings();
registerFunctionStrings(cdef->signalList);
registerFunctionStrings(cdef->slotList);
registerFunctionStrings(cdef->methodList);
registerFunctionStrings(cdef->constructorList);
registerByteArrayVector(cdef->nonClassSignalList);
registerPropertyStrings();
registerEnumStrings();
const bool hasStaticMetaCall =
(cdef->hasQObject || !cdef->methodList.isEmpty()
|| !cdef->propertyList.isEmpty() || !cdef->constructorList.isEmpty());
const QByteArray qualifiedClassNameIdentifier = generateQualifiedClassNameIdentifier(cdef->qualified);
// ensure the qt_meta_stringdata_XXXX_t type is local
fprintf(out, "namespace {\n");
//
// Build the strings using QtMocHelpers::StringData
//
fprintf(out, "\n#ifdef QT_MOC_HAS_STRINGDATA\n"
"struct qt_meta_stringdata_%s_t {};\n"
"constexpr auto qt_meta_stringdata_%s = QtMocHelpers::stringData(",
qualifiedClassNameIdentifier.constData(), qualifiedClassNameIdentifier.constData());
{
char comma = 0;
for (const QByteArray &str : strings) {
if (comma)
fputc(comma, out);
printStringWithIndentation(out, str);
comma = ',';
}
}
fprintf(out, "\n);\n"
"#else // !QT_MOC_HAS_STRINGDATA\n");
fprintf(out, "#error \"qtmochelpers.h not found or too old.\"\n");
fprintf(out, "#endif // !QT_MOC_HAS_STRINGDATA\n");
fprintf(out, "} // unnamed namespace\n\n");
//
// build the data array
//
int index = MetaObjectPrivateFieldCount;
fprintf(out, "Q_CONSTINIT static const uint qt_meta_data_%s[] = {\n", qualifiedClassNameIdentifier.constData());
fprintf(out, "\n // content:\n");
fprintf(out, " %4d, // revision\n", int(QMetaObjectPrivate::OutputRevision));
fprintf(out, " %4d, // classname\n", stridx(cdef->qualified));
fprintf(out, " %4d, %4d, // classinfo\n", int(cdef->classInfoList.size()), int(cdef->classInfoList.size() ? index : 0));
index += cdef->classInfoList.size() * 2;
qsizetype methodCount = 0;
if (qAddOverflow(cdef->signalList.size(), cdef->slotList.size(), &methodCount)
|| qAddOverflow(cdef->methodList.size(), methodCount, &methodCount)) {
parser->error("internal limit exceeded: the total number of member functions"
" (including signals and slots) is too big.");
}
fprintf(out, " %4" PRIdQSIZETYPE ", %4d, // methods\n", methodCount, methodCount ? index : 0);
index += methodCount * QMetaObjectPrivate::IntsPerMethod;
if (cdef->revisionedMethods)
index += methodCount;
int paramsIndex = index;
int totalParameterCount = aggregateParameterCount(cdef->signalList)
+ aggregateParameterCount(cdef->slotList)
+ aggregateParameterCount(cdef->methodList)
+ aggregateParameterCount(cdef->constructorList);
index += totalParameterCount * 2 // types and parameter names
- methodCount // return "parameters" don't have names
- int(cdef->constructorList.size()); // "this" parameters don't have names
fprintf(out, " %4d, %4d, // properties\n", int(cdef->propertyList.size()), int(cdef->propertyList.size() ? index : 0));
index += cdef->propertyList.size() * QMetaObjectPrivate::IntsPerProperty;
fprintf(out, " %4d, %4d, // enums/sets\n", int(cdef->enumList.size()), cdef->enumList.size() ? index : 0);
int enumsIndex = index;
for (const EnumDef &def : std::as_const(cdef->enumList))
index += QMetaObjectPrivate::IntsPerEnum + (def.values.size() * 2);
fprintf(out, " %4d, %4d, // constructors\n", isConstructible ? int(cdef->constructorList.size()) : 0,
isConstructible ? index : 0);
int flags = 0;
if (cdef->hasQGadget || cdef->hasQNamespace) {
// Ideally, all the classes could have that flag. But this broke classes generated
// by qdbusxml2cpp which generate code that require that we call qt_metacall for properties
flags |= PropertyAccessInStaticMetaCall;
}
fprintf(out, " %4d, // flags\n", flags);
fprintf(out, " %4d, // signalCount\n", int(cdef->signalList.size()));
//
// Build classinfo array
//
generateClassInfos();
qsizetype propEnumCount = 0;
// all property metatypes + all enum metatypes + 1 for the type of the current class itself
if (qAddOverflow(cdef->propertyList.size(), cdef->enumList.size(), &propEnumCount)
|| qAddOverflow(propEnumCount, qsizetype(1), &propEnumCount)
|| propEnumCount >= std::numeric_limits<int>::max()) {
parser->error("internal limit exceeded: number of property and enum metatypes is too big.");
}
int initialMetaTypeOffset = int(propEnumCount);
//
// Build signals array first, otherwise the signal indices would be wrong
//
generateFunctions(cdef->signalList, "signal", MethodSignal, paramsIndex, initialMetaTypeOffset);
//
// Build slots array
//
generateFunctions(cdef->slotList, "slot", MethodSlot, paramsIndex, initialMetaTypeOffset);
//
// Build method array
//
generateFunctions(cdef->methodList, "method", MethodMethod, paramsIndex, initialMetaTypeOffset);
//
// Build method version arrays
//
if (cdef->revisionedMethods) {
generateFunctionRevisions(cdef->signalList, "signal");
generateFunctionRevisions(cdef->slotList, "slot");
generateFunctionRevisions(cdef->methodList, "method");
}
//
// Build method parameters array
//
generateFunctionParameters(cdef->signalList, "signal");
generateFunctionParameters(cdef->slotList, "slot");
generateFunctionParameters(cdef->methodList, "method");
if (isConstructible)
generateFunctionParameters(cdef->constructorList, "constructor");
//
// Build property array
//
generateProperties();
//
// Build enums array
//
generateEnums(enumsIndex);
//
// Build constructors array
//
if (isConstructible)
generateFunctions(cdef->constructorList, "constructor", MethodConstructor, paramsIndex, initialMetaTypeOffset);
//
// Terminate data array
//
fprintf(out, "\n 0 // eod\n};\n\n");
//
// Build extra array
//
QList<QByteArray> extraList;
QMultiHash<QByteArray, QByteArray> knownExtraMetaObject(knownGadgets);
knownExtraMetaObject.unite(knownQObjectClasses);
for (const PropertyDef &p : std::as_const(cdef->propertyList)) {
if (isBuiltinType(p.type))
continue;
if (p.type.contains('*') || p.type.contains('<') || p.type.contains('>'))
continue;
const qsizetype s = p.type.lastIndexOf("::");
if (s <= 0)
continue;
QByteArray unqualifiedScope = p.type.left(s);
// The scope may be a namespace for example, so it's only safe to include scopes that are known QObjects (QTBUG-2151)
QMultiHash<QByteArray, QByteArray>::ConstIterator scopeIt;
QByteArray thisScope = cdef->qualified;
do {
const qsizetype s = thisScope.lastIndexOf("::");
thisScope = thisScope.left(s);
QByteArray currentScope = thisScope.isEmpty() ? unqualifiedScope : thisScope + "::" + unqualifiedScope;
scopeIt = knownExtraMetaObject.constFind(currentScope);
} while (!thisScope.isEmpty() && scopeIt == knownExtraMetaObject.constEnd());
if (scopeIt == knownExtraMetaObject.constEnd())
continue;
const QByteArray &scope = *scopeIt;
if (scope == "Qt")
continue;
if (qualifiedNameEquals(cdef->qualified, scope))
continue;
if (!extraList.contains(scope))
extraList += scope;
}
// QTBUG-20639 - Accept non-local enums for QML signal/slot parameters.
// Look for any scoped enum declarations, and add those to the list
// of extra/related metaobjects for this object.
for (auto it = cdef->enumDeclarations.keyBegin(),
end = cdef->enumDeclarations.keyEnd(); it != end; ++it) {
const QByteArray &enumKey = *it;
const qsizetype s = enumKey.lastIndexOf("::");
if (s > 0) {
QByteArray scope = enumKey.left(s);
if (scope != "Qt" && !qualifiedNameEquals(cdef->qualified, scope) && !extraList.contains(scope))
extraList += scope;
}
}
//
// Generate meta object link to parent meta objects
//
if (!extraList.isEmpty()) {
fprintf(out, "Q_CONSTINIT static const QMetaObject::SuperData qt_meta_extradata_%s[] = {\n",
qualifiedClassNameIdentifier.constData());
for (const QByteArray &ba : std::as_const(extraList))
fprintf(out, " QMetaObject::SuperData::link<%s::staticMetaObject>(),\n", ba.constData());
fprintf(out, " nullptr\n};\n\n");
}
//
// Finally create and initialize the static meta object
//
fprintf(out, "Q_CONSTINIT const QMetaObject %s::staticMetaObject = { {\n",
cdef->qualified.constData());
if (isQObject)
fprintf(out, " nullptr,\n");
else if (cdef->superclassList.size() && !cdef->hasQGadget && !cdef->hasQNamespace) // for qobject, we know the super class must have a static metaobject
fprintf(out, " QMetaObject::SuperData::link<%s::staticMetaObject>(),\n", purestSuperClass.constData());
else if (cdef->superclassList.size()) // for gadgets we need to query at compile time for it
fprintf(out, " QtPrivate::MetaObjectForType<%s>::value,\n", purestSuperClass.constData());
else
fprintf(out, " nullptr,\n");
fprintf(out, " qt_meta_stringdata_%s.offsetsAndSizes,\n"
" qt_meta_data_%s,\n", qualifiedClassNameIdentifier.constData(),
qualifiedClassNameIdentifier.constData());
if (hasStaticMetaCall)
fprintf(out, " qt_static_metacall,\n");
else
fprintf(out, " nullptr,\n");
if (extraList.isEmpty())
fprintf(out, " nullptr,\n");
else
fprintf(out, " qt_meta_extradata_%s,\n", qualifiedClassNameIdentifier.constData());
const char *comma = "";
const bool requireCompleteness = requireCompleteTypes || cdef->requireCompleteMethodTypes;
auto stringForType = [requireCompleteness](const QByteArray &type, bool forceComplete) -> QByteArray {
const char *forceCompleteType = forceComplete ? ", std::true_type>" : ", std::false_type>";
if (requireCompleteness)
return type;
return "QtPrivate::TypeAndForceComplete<" % type % forceCompleteType;
};
if (!requireCompleteness) {
fprintf(out, " qt_incomplete_metaTypeArray<qt_meta_stringdata_%s_t", qualifiedClassNameIdentifier.constData());
comma = ",";
} else {
fprintf(out, " qt_metaTypeArray<");
}
// metatypes for properties
for (const PropertyDef &p : std::as_const(cdef->propertyList)) {
fprintf(out, "%s\n // property '%s'\n %s",
comma, p.name.constData(), stringForType(p.type, true).constData());
comma = ",";
}
// metatypes for enums
for (const EnumDef &e : std::as_const(cdef->enumList)) {
fprintf(out, "%s\n // enum '%s'\n %s",
comma, e.name.constData(), stringForType(e.qualifiedType(cdef), true).constData());
comma = ",";
}
// type name for the Q_OJBECT/GADGET itself, void for namespaces
auto ownType = !cdef->hasQNamespace ? cdef->classname.data() : "void";
fprintf(out, "%s\n // Q_OBJECT / Q_GADGET\n %s",
comma, stringForType(ownType, true).constData());
comma = ",";
// metatypes for all exposed methods
// because we definitely printed something above, this section doesn't need comma control
const auto allMethods = {&cdef->signalList, &cdef->slotList, &cdef->methodList};
for (const QList<FunctionDef> *methodContainer : allMethods) {
for (const FunctionDef &fdef : *methodContainer) {
fprintf(out, ",\n // method '%s'\n %s",
fdef.name.constData(), stringForType(fdef.type.name, false).constData());
for (const auto &argument: fdef.arguments)
fprintf(out, ",\n %s", stringForType(argument.type.name, false).constData());
}
}
// but constructors have no return types, so this needs comma control again
for (const FunctionDef &fdef : std::as_const(cdef->constructorList)) {
if (fdef.arguments.isEmpty())
continue;
fprintf(out, "%s\n // constructor '%s'", comma, fdef.name.constData());
comma = "";
for (const auto &argument: fdef.arguments) {
fprintf(out, "%s\n %s", comma,
stringForType(argument.type.name, false).constData());
comma = ",";
}
}
fprintf(out, "\n >,\n");
fprintf(out, " nullptr\n} };\n\n");
//
// Generate internal qt_static_metacall() function
//
if (hasStaticMetaCall)
generateStaticMetacall();
if (!cdef->hasQObject)
return;
fprintf(out, "\nconst QMetaObject *%s::metaObject() const\n{\n return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;\n}\n",
cdef->qualified.constData());
//
// Generate smart cast function
//
fprintf(out, "\nvoid *%s::qt_metacast(const char *_clname)\n{\n", cdef->qualified.constData());
fprintf(out, " if (!_clname) return nullptr;\n");
fprintf(out, " if (!strcmp(_clname, qt_meta_stringdata_%s.stringdata0))\n"
" return static_cast<void*>(this);\n",
qualifiedClassNameIdentifier.constData());
// for all superclasses but the first one
if (cdef->superclassList.size() > 1) {
auto it = cdef->superclassList.cbegin() + 1;
const auto end = cdef->superclassList.cend();
for (; it != end; ++it) {
if (it->access == FunctionDef::Private)
continue;
const char *cname = it->classname.constData();
fprintf(out, " if (!strcmp(_clname, \"%s\"))\n return static_cast< %s*>(this);\n",
cname, cname);
}
}
for (const QList<ClassDef::Interface> &iface : std::as_const(cdef->interfaceList)) {
for (qsizetype j = 0; j < iface.size(); ++j) {
fprintf(out, " if (!strcmp(_clname, %s))\n return ", iface.at(j).interfaceId.constData());
for (qsizetype k = j; k >= 0; --k)
fprintf(out, "static_cast< %s*>(", iface.at(k).className.constData());
fprintf(out, "this%s;\n", QByteArray(j + 1, ')').constData());
}
}
if (!purestSuperClass.isEmpty() && !isQObject) {
QByteArray superClass = purestSuperClass;
fprintf(out, " return %s::qt_metacast(_clname);\n", superClass.constData());
} else {
fprintf(out, " return nullptr;\n");
}
fprintf(out, "}\n");
//
// Generate internal qt_metacall() function
//
generateMetacall();
//
// Generate internal signal functions
//
for (int signalindex = 0; signalindex < int(cdef->signalList.size()); ++signalindex)
generateSignal(&cdef->signalList.at(signalindex), signalindex);
//
// Generate plugin meta data
//
generatePluginMetaData();
//
// Generate function to make sure the non-class signals exist in the parent classes
//
if (!cdef->nonClassSignalList.isEmpty()) {
fprintf(out, "namespace CheckNotifySignalValidity_%s {\n", qualifiedClassNameIdentifier.constData());
for (const QByteArray &nonClassSignal : std::as_const(cdef->nonClassSignalList)) {
const auto propertyIt = std::find_if(cdef->propertyList.constBegin(),
cdef->propertyList.constEnd(),
[&nonClassSignal](const PropertyDef &p) {
return nonClassSignal == p.notify;
});
// must find something, otherwise checkProperties wouldn't have inserted an entry into nonClassSignalList
Q_ASSERT(propertyIt != cdef->propertyList.constEnd());
fprintf(out, "template<typename T> using has_nullary_%s = decltype(std::declval<T>().%s());\n",
nonClassSignal.constData(),
nonClassSignal.constData());
const auto &propertyType = propertyIt->type;
fprintf(out, "template<typename T> using has_unary_%s = decltype(std::declval<T>().%s(std::declval<%s>()));\n",
nonClassSignal.constData(),
nonClassSignal.constData(),
propertyType.constData());
fprintf(out, "static_assert(qxp::is_detected_v<has_nullary_%s, %s> || qxp::is_detected_v<has_unary_%s, %s>,\n"
" \"NOTIFY signal %s does not exist in class (or is private in its parent)\");\n",
nonClassSignal.constData(), cdef->qualified.constData(),
nonClassSignal.constData(), cdef->qualified.constData(),
nonClassSignal.constData());
}
fprintf(out, "}\n");
}
}
void Generator::registerClassInfoStrings()
{
for (const ClassInfoDef &c : std::as_const(cdef->classInfoList)) {
strreg(c.name);
strreg(c.value);
}
}
void Generator::generateClassInfos()
{
if (cdef->classInfoList.isEmpty())
return;
fprintf(out, "\n // classinfo: key, value\n");
for (const ClassInfoDef &c : std::as_const(cdef->classInfoList))
fprintf(out, " %4d, %4d,\n", stridx(c.name), stridx(c.value));
}
void Generator::registerFunctionStrings(const QList<FunctionDef> &list)
{
for (const FunctionDef &f : list) {
strreg(f.name);
if (!isBuiltinType(f.normalizedType))
strreg(f.normalizedType);
strreg(f.tag);
for (const ArgumentDef &a : f.arguments) {
if (!isBuiltinType(a.normalizedType))
strreg(a.normalizedType);
strreg(a.name);
}
}
}
void Generator::registerByteArrayVector(const QList<QByteArray> &list)
{
for (const QByteArray &ba : list)
strreg(ba);
}
void Generator::generateFunctions(const QList<FunctionDef> &list, const char *functype, int type,
int ¶msIndex, int &initialMetatypeOffset)
{
if (list.isEmpty())
return;
fprintf(out, "\n // %ss: name, argc, parameters, tag, flags, initial metatype offsets\n", functype);
for (const FunctionDef &f : list) {
QByteArray comment;
uint flags = type;
if (f.access == FunctionDef::Private) {
flags |= AccessPrivate;
comment.append("Private");
} else if (f.access == FunctionDef::Public) {
flags |= AccessPublic;
comment.append("Public");
} else if (f.access == FunctionDef::Protected) {
flags |= AccessProtected;
comment.append("Protected");
}
if (f.isCompat) {
flags |= MethodCompatibility;
comment.append(" | MethodCompatibility");
}
if (f.wasCloned) {
flags |= MethodCloned;
comment.append(" | MethodCloned");
}
if (f.isScriptable) {
flags |= MethodScriptable;
comment.append(" | isScriptable");
}
if (f.revision > 0) {
flags |= MethodRevisioned;
comment.append(" | MethodRevisioned");
}
if (f.isConst) {
flags |= MethodIsConst;
comment.append(" | MethodIsConst ");
}
const int argc = int(f.arguments.size());
fprintf(out, " %4d, %4d, %4d, %4d, 0x%02x, %4d /* %s */,\n",
stridx(f.name), argc, paramsIndex, stridx(f.tag), flags, initialMetatypeOffset, comment.constData());
paramsIndex += 1 + argc * 2;
// constructors don't have a return type
initialMetatypeOffset += (f.isConstructor ? 0 : 1) + argc;
}
}
void Generator::generateFunctionRevisions(const QList<FunctionDef> &list, const char *functype)
{
if (list.size())
fprintf(out, "\n // %ss: revision\n", functype);
for (const FunctionDef &f : list)
fprintf(out, " %4d,\n", f.revision);
}
void Generator::generateFunctionParameters(const QList<FunctionDef> &list, const char *functype)
{
if (list.isEmpty())
return;
fprintf(out, "\n // %ss: parameters\n", functype);
for (const FunctionDef &f : list) {
fprintf(out, " ");
// Types
const bool allowEmptyName = f.isConstructor;
generateTypeInfo(f.normalizedType, allowEmptyName);
fputc(',', out);
for (const ArgumentDef &arg : f.arguments) {
fputc(' ', out);
generateTypeInfo(arg.normalizedType, allowEmptyName);
fputc(',', out);
}
// Parameter names
for (const ArgumentDef &arg : f.arguments)
fprintf(out, " %4d,", stridx(arg.name));
fprintf(out, "\n");
}
}
void Generator::generateTypeInfo(const QByteArray &typeName, bool allowEmptyName)
{
Q_UNUSED(allowEmptyName);
if (isBuiltinType(typeName)) {
int type;
const char *valueString;
if (typeName == "qreal") {
type = QMetaType::UnknownType;
valueString = "QReal";
} else {
type = nameToBuiltinType(typeName);
valueString = metaTypeEnumValueString(type);
}
if (valueString) {
fprintf(out, "QMetaType::%s", valueString);
} else {
Q_ASSERT(type != QMetaType::UnknownType);
fprintf(out, "%4d", type);
}
} else {
Q_ASSERT(!typeName.isEmpty() || allowEmptyName);
fprintf(out, "0x%.8x | %d", IsUnresolvedType, stridx(typeName));
}
}
void Generator::registerPropertyStrings()
{
for (const PropertyDef &p : std::as_const(cdef->propertyList)) {
strreg(p.name);
if (!isBuiltinType(p.type))
strreg(p.type);
}
}
void Generator::generateProperties()
{
//
// Create meta data
//
if (cdef->propertyList.size())
fprintf(out, "\n // properties: name, type, flags, notifyId, revision\n");
for (const PropertyDef &p : std::as_const(cdef->propertyList)) {
uint flags = Invalid;
if (!isBuiltinType(p.type))
flags |= EnumOrFlag;
if (!p.member.isEmpty() && !p.constant)
flags |= Writable;
if (!p.read.isEmpty() || !p.member.isEmpty())
flags |= Readable;
if (!p.write.isEmpty()) {
flags |= Writable;
if (p.stdCppSet())
flags |= StdCppSet;
}
if (!p.reset.isEmpty())
flags |= Resettable;
if (p.designable != "false")
flags |= Designable;
if (p.scriptable != "false")
flags |= Scriptable;
if (p.stored != "false")
flags |= Stored;
if (p.user != "false")
flags |= User;
if (p.constant)
flags |= Constant;
if (p.final)
flags |= Final;
if (p.required)
flags |= Required;
if (!p.bind.isEmpty())
flags |= Bindable;
fprintf(out, " %4d, ", stridx(p.name));
generateTypeInfo(p.type);
int notifyId = p.notifyId;
if (p.notifyId < -1) {
// signal is in parent class
const int indexInStrings = int(strings.indexOf(p.notify));
notifyId = indexInStrings | IsUnresolvedSignal;
}
fprintf(out, ", 0x%.8x, uint(%d), %d,\n", flags, notifyId, p.revision);
}
}
void Generator::registerEnumStrings()
{
for (const EnumDef &e : std::as_const(cdef->enumList)) {
strreg(e.name);
if (!e.enumName.isNull())
strreg(e.enumName);
for (const QByteArray &val : e.values)
strreg(val);
}
}
void Generator::generateEnums(int index)
{
if (cdef->enumDeclarations.isEmpty())
return;
fprintf(out, "\n // enums: name, alias, flags, count, data\n");
index += QMetaObjectPrivate::IntsPerEnum * cdef->enumList.size();
int i;
for (i = 0; i < cdef->enumList.size(); ++i) {
const EnumDef &e = cdef->enumList.at(i);
int flags = 0;
if (cdef->enumDeclarations.value(e.name))
flags |= EnumIsFlag;
if (e.isEnumClass)
flags |= EnumIsScoped;
fprintf(out, " %4d, %4d, 0x%.1x, %4d, %4d,\n",
stridx(e.name),
e.enumName.isNull() ? stridx(e.name) : stridx(e.enumName),
flags,
int(e.values.size()),
index);
index += e.values.size() * 2;
}
fprintf(out, "\n // enum data: key, value\n");
for (const EnumDef &e : std::as_const(cdef->enumList)) {
for (const QByteArray &val : e.values) {
QByteArray code = cdef->qualified.constData();
if (e.isEnumClass)
code += "::" + (e.enumName.isNull() ? e.name : e.enumName);
code += "::" + val;
fprintf(out, " %4d, uint(%s),\n",
stridx(val), code.constData());
}
}
}
void Generator::generateMetacall()
{
bool isQObject = (cdef->classname == "QObject");
fprintf(out, "\nint %s::qt_metacall(QMetaObject::Call _c, int _id, void **_a)\n{\n",
cdef->qualified.constData());
if (!purestSuperClass.isEmpty() && !isQObject) {
QByteArray superClass = purestSuperClass;
fprintf(out, " _id = %s::qt_metacall(_c, _id, _a);\n", superClass.constData());
}
bool needElse = false;
QList<FunctionDef> methodList;
methodList += cdef->signalList;
methodList += cdef->slotList;
methodList += cdef->methodList;
// If there are no methods or properties, we will return _id anyway, so
// don't emit this comparison -- it is unnecessary, and it makes coverity
// unhappy.
if (methodList.size() || cdef->propertyList.size()) {
fprintf(out, " if (_id < 0)\n return _id;\n");
}
fprintf(out, " ");
if (methodList.size()) {
needElse = true;
fprintf(out, "if (_c == QMetaObject::InvokeMetaMethod) {\n");
fprintf(out, " if (_id < %d)\n", int(methodList.size()));
fprintf(out, " qt_static_metacall(this, _c, _id, _a);\n");
fprintf(out, " _id -= %d;\n }", int(methodList.size()));
fprintf(out, " else if (_c == QMetaObject::RegisterMethodArgumentMetaType) {\n");
fprintf(out, " if (_id < %d)\n", int(methodList.size()));
if (methodsWithAutomaticTypesHelper(methodList).isEmpty())
fprintf(out, " *reinterpret_cast<QMetaType *>(_a[0]) = QMetaType();\n");
else
fprintf(out, " qt_static_metacall(this, _c, _id, _a);\n");
fprintf(out, " _id -= %d;\n }", int(methodList.size()));
}
if (cdef->propertyList.size()) {
if (needElse)
fprintf(out, "else ");
fprintf(out,
"if (_c == QMetaObject::ReadProperty || _c == QMetaObject::WriteProperty\n"
" || _c == QMetaObject::ResetProperty || _c == QMetaObject::BindableProperty\n"
" || _c == QMetaObject::RegisterPropertyMetaType) {\n"
" qt_static_metacall(this, _c, _id, _a);\n"
" _id -= %d;\n }", int(cdef->propertyList.size()));
}
if (methodList.size() || cdef->propertyList.size())
fprintf(out, "\n ");
fprintf(out,"return _id;\n}\n");
}
// ### Qt 7 (6.x?): remove
QMultiMap<QByteArray, int> Generator::automaticPropertyMetaTypesHelper()
{