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/*
* 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> {
void format(FormatBuilder& builder, T const& object)
{
Formatter<StringView>::format(builder, object.to_string(0));
}
};
template<PDF::IsObject T>
struct Formatter<NonnullRefPtr<T>> : Formatter<T> {
void format(FormatBuilder& builder, NonnullRefPtr<T> const& object)
{
Formatter<T>::format(builder, *object);
}
};
}
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