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/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
// SPDX-License-Identifier: MIT OR LGPL-2.0-or-later
// SPDX-FileCopyrightText: 2013 Intel Corporation
// SPDX-FileCopyrightText: 2008-2010 litl, LLC
#ifndef GI_FUNDAMENTAL_H_
#define GI_FUNDAMENTAL_H_
#include <config.h>
#include <girepository.h>
#include <glib-object.h>
#include <js/TypeDecls.h>
#include "gi/cwrapper.h"
#include "gi/wrapperutils.h"
#include "gjs/jsapi-util.h" // for GjsAutoCallableInfo
#include "gjs/macros.h"
#include "util/log.h"
class FundamentalPrototype;
class FundamentalInstance;
namespace JS { class CallArgs; }
/* To conserve memory, we have two different kinds of private data for JS
* wrappers for fundamental types: FundamentalInstance, and
* FundamentalPrototype. Both inherit from FundamentalBase for their common
* functionality. For more information, see the notes in wrapperutils.h.
*/
class FundamentalBase
: public GIWrapperBase<FundamentalBase, FundamentalPrototype,
FundamentalInstance> {
friend class CWrapperPointerOps<FundamentalBase>;
friend class GIWrapperBase<FundamentalBase, FundamentalPrototype,
FundamentalInstance>;
protected:
explicit FundamentalBase(FundamentalPrototype* proto = nullptr)
: GIWrapperBase(proto) {}
static constexpr GjsDebugTopic DEBUG_TOPIC = GJS_DEBUG_GFUNDAMENTAL;
static constexpr const char* DEBUG_TAG = "fundamental";
static const struct JSClassOps class_ops;
static const struct JSClass klass;
// Public API
public:
GJS_JSAPI_RETURN_CONVENTION
static bool to_gvalue(JSContext* cx, JS::HandleObject obj, GValue* gvalue);
};
class FundamentalPrototype
: public GIWrapperPrototype<FundamentalBase, FundamentalPrototype,
FundamentalInstance> {
friend class GIWrapperPrototype<FundamentalBase, FundamentalPrototype,
FundamentalInstance>;
friend class GIWrapperBase<FundamentalBase, FundamentalPrototype,
FundamentalInstance>;
GIObjectInfoRefFunction m_ref_function;
GIObjectInfoUnrefFunction m_unref_function;
GIObjectInfoGetValueFunction m_get_value_function;
GIObjectInfoSetValueFunction m_set_value_function;
GjsAutoCallableInfo m_constructor_info;
explicit FundamentalPrototype(GIObjectInfo* info, GType gtype);
~FundamentalPrototype(void);
static constexpr InfoType::Tag info_type_tag = InfoType::Object;
public:
GJS_JSAPI_RETURN_CONVENTION
static FundamentalPrototype* for_gtype(JSContext* cx, GType gtype);
// Accessors
[[nodiscard]] GICallableInfo* constructor_info() const {
return m_constructor_info;
}
void* call_ref_function(void* ptr) const {
if (!m_ref_function)
return ptr;
return m_ref_function(ptr);
}
void call_unref_function(void* ptr) const {
if (m_unref_function)
m_unref_function(ptr);
}
[[nodiscard]] bool call_get_value_function(const GValue* value,
void** ptr_out) const {
if (!m_get_value_function)
return false;
*ptr_out = m_get_value_function(value);
return true;
}
bool call_set_value_function(GValue* value, void* object) const {
if (m_set_value_function) {
m_set_value_function(value, object);
return true;
}
return false;
}
// Helper methods
private:
GJS_JSAPI_RETURN_CONVENTION
bool get_parent_proto(JSContext* cx, JS::MutableHandleObject proto) const;
[[nodiscard]] unsigned constructor_nargs() const;
GJS_JSAPI_RETURN_CONVENTION
bool resolve_interface(JSContext* cx, JS::HandleObject obj, bool* resolved,
const char* name);
// JSClass operations
GJS_JSAPI_RETURN_CONVENTION
bool resolve_impl(JSContext* cx, JS::HandleObject obj, JS::HandleId id,
bool* resolved);
// Public API
public:
GJS_JSAPI_RETURN_CONVENTION
static bool define_class(JSContext* cx, JS::HandleObject in_object,
GIObjectInfo* info,
JS::MutableHandleObject constructor);
};
class FundamentalInstance
: public GIWrapperInstance<FundamentalBase, FundamentalPrototype,
FundamentalInstance> {
friend class FundamentalBase; // for set_value()
friend class GIWrapperInstance<FundamentalBase, FundamentalPrototype,
FundamentalInstance>;
friend class GIWrapperBase<FundamentalBase, FundamentalPrototype,
FundamentalInstance>;
explicit FundamentalInstance(FundamentalPrototype* prototype,
JS::HandleObject obj);
~FundamentalInstance(void);
// Helper methods
GJS_JSAPI_RETURN_CONVENTION
bool invoke_constructor(JSContext* cx, JS::HandleObject obj,
const JS::CallArgs& args, GIArgument* rvalue);
void ref(void) { get_prototype()->call_ref_function(m_ptr); }
void unref(void) { get_prototype()->call_unref_function(m_ptr); }
[[nodiscard]] bool set_value(GValue* gvalue) const {
return get_prototype()->call_set_value_function(gvalue, m_ptr);
}
GJS_JSAPI_RETURN_CONVENTION
bool associate_js_instance(JSContext* cx, JSObject* object,
void* gfundamental);
// JS constructor
GJS_JSAPI_RETURN_CONVENTION
bool constructor_impl(JSContext* cx, JS::HandleObject obj,
const JS::CallArgs& args);
public:
GJS_JSAPI_RETURN_CONVENTION
static JSObject* object_for_c_ptr(JSContext* cx, void* gfundamental);
GJS_JSAPI_RETURN_CONVENTION
static bool object_for_gvalue(JSContext* cx, const GValue* gvalue,
GType gtype,
JS::MutableHandleObject object_out);
static void* copy_ptr(JSContext* cx, GType gtype, void* gfundamental);
};
#endif // GI_FUNDAMENTAL_H_
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