mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 06:52:45 +00:00
216e21a1fa
This isn't a complete conversion to ErrorOr<void>, but a good chunk. The end goal here is to propagate buffer allocation failures to the caller, and allow the use of TRY() with formatting functions.
80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Debug.h>
|
|
#include <AK/FlyString.h>
|
|
#include <AK/Format.h>
|
|
#include <AK/RefCounted.h>
|
|
#include <AK/SourceLocation.h>
|
|
#include <LibPDF/Forward.h>
|
|
#include <LibPDF/Value.h>
|
|
|
|
namespace PDF {
|
|
|
|
class Object : public RefCounted<Object> {
|
|
public:
|
|
virtual ~Object() = default;
|
|
|
|
[[nodiscard]] ALWAYS_INLINE u32 generation_index() const { return m_generation_index; }
|
|
ALWAYS_INLINE void set_generation_index(u32 generation_index) { m_generation_index = generation_index; }
|
|
|
|
#define DEFINE_ID(_, name) \
|
|
virtual bool is_##name() const { return false; }
|
|
ENUMERATE_OBJECT_TYPES(DEFINE_ID)
|
|
#undef DEFINE_ID
|
|
|
|
virtual const char* type_name() const = 0;
|
|
virtual String to_string(int indent) const = 0;
|
|
|
|
private:
|
|
u32 m_generation_index { 0 };
|
|
};
|
|
|
|
template<IsObject To, IsObject From>
|
|
[[nodiscard]] ALWAYS_INLINE static NonnullRefPtr<To> object_cast(NonnullRefPtr<From> obj
|
|
#ifdef PDF_DEBUG
|
|
,
|
|
SourceLocation loc = SourceLocation::current()
|
|
#endif
|
|
)
|
|
{
|
|
#ifdef PDF_DEBUG
|
|
# define ENUMERATE_TYPES(class_name, snake_name) \
|
|
if constexpr (IsSame<To, class_name>) { \
|
|
if (!obj->is_##snake_name()) { \
|
|
dbgln("{} invalid cast from type {} to type " #snake_name, loc, obj->type_name()); \
|
|
} \
|
|
}
|
|
ENUMERATE_OBJECT_TYPES(ENUMERATE_TYPES)
|
|
# undef ENUMERATE_TYPES
|
|
#endif
|
|
|
|
return static_ptr_cast<To>(obj);
|
|
}
|
|
|
|
}
|
|
|
|
namespace AK {
|
|
|
|
template<PDF::IsObject T>
|
|
struct Formatter<T> : Formatter<StringView> {
|
|
ErrorOr<void> format(FormatBuilder& builder, T const& object)
|
|
{
|
|
return Formatter<StringView>::format(builder, object.to_string(0));
|
|
}
|
|
};
|
|
|
|
template<PDF::IsObject T>
|
|
struct Formatter<NonnullRefPtr<T>> : Formatter<T> {
|
|
ErrorOr<void> format(FormatBuilder& builder, NonnullRefPtr<T> const& object)
|
|
{
|
|
return Formatter<T>::format(builder, *object);
|
|
}
|
|
};
|
|
|
|
}
|