Файловый менеджер

Файловый менеджер - Редактировать - /snap/gnome-3-38-2004/140/usr/lib/glibmm-2.4/proc/m4/class_opaque_refcounted.m4

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dnl dnl _CLASS_OPAQUE_REFCOUNTED(Coverage, PangoCoverage, pango_coverage_new, pango_coverage_ref, pango_coverage_unref, api_decoration) dnl define(`_CLASS_OPAQUE_REFCOUNTED',`dnl _PUSH() dnl dnl Define the args for later macros define(`__CPPNAME__',`$1') define(`__CNAME__',`$2') define(`__OPAQUE_FUNC_NEW',`$3') define(`__OPAQUE_FUNC_REF',`$4') define(`__OPAQUE_FUNC_UNREF',`$5') define(`__OPAQUE_FUNC_DECORATION',`$6') undefine(`__OPAQUE_FUNC_GTYPE__') _POP() _SECTION(SECTION_CLASS2) ')dnl End of _CLASS_OPAQUE_REFCOUNTED. dnl _IS_REFCOUNTED_BOXEDTYPE(gtype_func) dnl dnl Generates a _get_type() function and a Glib::Value specialization. dnl A Glib::Value specialization is required, if the C++ class is used in dnl _WRAP_PROPERTY. The C class must have been registered in the GType system dnl with g_boxed_type_register_static(). dnl dnl Optional parameter gtype_func: dnl 1. If not defined or an empty string, _GET_TYPE_FUNC() generates the dnl function name from the name of the C type, e.g. dnl GSettingsSchema -> g_settings_schema_get_type dnl 2. If anything else, it's assumed to be the name of the _get_type() function. dnl define(`_IS_REFCOUNTED_BOXEDTYPE',`dnl _PUSH() dnl Define this macro to be tested for later. define(`__OPAQUE_FUNC_GTYPE__',`$1') _POP() ') dnl dnl _END_CLASS_OPAQUE_REFCOUNTED() dnl denotes the end of a class dnl define(`_END_CLASS_OPAQUE_REFCOUNTED',` _SECTION(SECTION_HEADER3) namespace Glib { /** A Glib::wrap() method for this object. * * @param object The C instance. * @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref. * @result A C++ instance that wraps this C instance. * * @relates __NAMESPACE__::__CPPNAME__ / __OPAQUE_FUNC_DECORATION Glib::RefPtr<__NAMESPACE__::__CPPNAME__> wrap(__CNAME__ object, bool take_copy = false); ifdef(`__OPAQUE_FUNC_GTYPE__',`dnl #ifndef DOXYGEN_SHOULD_SKIP_THIS template <> class __OPAQUE_FUNC_DECORATION Value<Glib::RefPtr<__NAMESPACE__::__CPPNAME__>> : public Glib::Value_RefPtrBoxed<__NAMESPACE__::__CPPNAME__> { public: CppType get() const { return Glib::wrap(static_cast<__CNAME__>(get_boxed()), true); } }; #endif / DOXYGEN_SHOULD_SKIP_THIS / ')dnl endif __OPAQUE_FUNC_GTYPE__ } // namespace Glib _SECTION(SECTION_SRC_GENERATED) / Why reinterpret_cast<__CPPNAME__>(gobject) is needed: * A __CPPNAME__ instance is in fact always a __CNAME__ instance. * Unfortunately, __CNAME__ cannot be a member of __CPPNAME__, * because it is an opaque struct. Also, the C interface does not provide * any hooks to install a destroy notification handler, thus we cannot * wrap it dynamically either. * * The cast works because __CPPNAME__ does not have any member data, and * it is impossible to derive from it. This is ensured by using final on the * class and by using = delete on the default constructor. / namespace Glib { Glib::RefPtr<__NAMESPACE__::__CPPNAME__> wrap(__CNAME__ object, bool take_copy) { if(take_copy && object) __OPAQUE_FUNC_REF`'(object); // See the comment at the top of this file, if you want to know why the cast works. return Glib::RefPtr<__NAMESPACE__::__CPPNAME__>(reinterpret_cast<__NAMESPACE__::__CPPNAME__>(object)); } } // namespace Glib __NAMESPACE_BEGIN__ dnl dnl The implementation: dnl ifdef(`__OPAQUE_FUNC_GTYPE__',`dnl // static GType __CPPNAME__::get_type() { ifelse(__OPAQUE_FUNC_GTYPE__,,`dnl return _GET_TYPE_FUNC(__CNAME__); ',`dnl return __OPAQUE_FUNC_GTYPE__`'(); ')dnl } ')dnl endif __OPAQUE_FUNC_GTYPE__ ifelse(__OPAQUE_FUNC_NEW,NONE,`dnl ',`dnl else // static Glib::RefPtr<__CPPNAME__> __CPPNAME__::create() { // See the comment at the top of this file, if you want to know why the cast works. return Glib::RefPtr<__CPPNAME__>(reinterpret_cast<__CPPNAME__>(__OPAQUE_FUNC_NEW`'())); } ')dnl endif __OPAQUE_FUNC_NEW void __CPPNAME__::reference() const { // See the comment at the top of this file, if you want to know why the cast works. __OPAQUE_FUNC_REF`'(reinterpret_cast<__CNAME__>(const_cast<__CPPNAME__>(this))); } void __CPPNAME__::unreference() const { // See the comment at the top of this file, if you want to know why the cast works. __OPAQUE_FUNC_UNREF`'(reinterpret_cast<__CNAME__>(const_cast<__CPPNAME__>(this))); } __CNAME__* __CPPNAME__::gobj() { // See the comment at the top of this file, if you want to know why the cast works. return reinterpret_cast<__CNAME__>(this); } const __CNAME__ __CPPNAME__::gobj() const { // See the comment at the top of this file, if you want to know why the cast works. return reinterpret_cast<const __CNAME__>(this); } __CNAME__ __CPPNAME__::gobj_copy() const { // See the comment at the top of this file, if you want to know why the cast works. const auto gobject = reinterpret_cast<__CNAME__>(const_cast<__CPPNAME__>(this)); __OPAQUE_FUNC_REF`'(gobject); return gobject; } _IMPORT(SECTION_CC) __NAMESPACE_END__ dnl dnl dnl dnl _POP() dnl dnl dnl The actual class, e.g. Pango::FontDescription, declaration: dnl _IMPORT(SECTION_CLASS1) public: #ifndef DOXYGEN_SHOULD_SKIP_THIS using CppObjectType = __CPPNAME__; using BaseObjectType = __CNAME__; #endif /* DOXYGEN_SHOULD_SKIP_THIS / ifdef(`__OPAQUE_FUNC_GTYPE__',`dnl /* Get the GType for this class, for use with the underlying GObject type system. / static GType get_type() G_GNUC_CONST; ')dnl endif __OPAQUE_FUNC_GTYPE__ ifelse(__OPAQUE_FUNC_NEW,NONE,`dnl ',`dnl else static Glib::RefPtr<__CPPNAME__> create(); ')dnl endif __OPAQUE_FUNC_NEW /* Increment the reference count for this object. * You should never need to do this manually - use the object via a RefPtr instead. / void reference() const; /* Decrement the reference count for this object. * You should never need to do this manually - use the object via a RefPtr instead. / void unreference() const; ///Provides access to the underlying C instance. __CNAME__ gobj(); ///Provides access to the underlying C instance. const __CNAME__* gobj() const; ///Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. __CNAME__* gobj_copy() const; __CPPNAME__`'() = delete; // noncopyable __CPPNAME__`'(const __CPPNAME__&) = delete; __CPPNAME__& operator=(const __CPPNAME__&) = delete; protected: // Do not derive this. __NAMESPACE__::__CPPNAME__ can neither be constructed nor deleted. void operator delete(void*, std::size_t); private: _IMPORT(SECTION_CLASS2) ')

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