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https://github.com/LadybirdBrowser/ladybird.git
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edc0cd29f8
Old situation: Object.h defines Object Object.h defines ArrayObject ArrayObject requires the definition of Object ArrayObject requires the definition of Value Value.h defines Value Value requires the definition of Object Therefore, a file with the single line "#include <Value.h>" used to raise compilation errors; certainly not something that one might expect from a library. This patch splits up the definitions in Object.h to break the cycle. Now, Object.h only defines Object, Value.h still only defines Value (and includes Object.h), and the new header ObjectDerivatives.h defines ArrayObject (and includes both Object.h and Value.h).
80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
/*
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* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Debug.h>
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#include <AK/FlyString.h>
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#include <AK/Format.h>
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#include <AK/RefCounted.h>
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#include <AK/SourceLocation.h>
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#include <LibPDF/Forward.h>
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#include <LibPDF/Value.h>
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namespace PDF {
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class Object : public RefCounted<Object> {
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public:
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virtual ~Object() = default;
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[[nodiscard]] ALWAYS_INLINE u32 generation_index() const { return m_generation_index; }
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ALWAYS_INLINE void set_generation_index(u32 generation_index) { m_generation_index = generation_index; }
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#define DEFINE_ID(_, name) \
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virtual bool is_##name() const { return false; }
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ENUMERATE_OBJECT_TYPES(DEFINE_ID)
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#undef DEFINE_ID
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virtual const char* type_name() const = 0;
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virtual String to_string(int indent) const = 0;
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private:
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u32 m_generation_index { 0 };
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};
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template<IsObject To, IsObject From>
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[[nodiscard]] ALWAYS_INLINE static NonnullRefPtr<To> object_cast(NonnullRefPtr<From> obj
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#ifdef PDF_DEBUG
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,
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SourceLocation loc = SourceLocation::current()
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#endif
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)
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{
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#ifdef PDF_DEBUG
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# define ENUMERATE_TYPES(class_name, snake_name) \
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if constexpr (IsSame<To, class_name>) { \
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if (!obj->is_##snake_name()) { \
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dbgln("{} invalid cast from type {} to type " #snake_name, loc, obj->type_name()); \
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} \
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}
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ENUMERATE_OBJECT_TYPES(ENUMERATE_TYPES)
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# undef ENUMERATE_TYPES
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#endif
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return static_ptr_cast<To>(obj);
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}
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}
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namespace AK {
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template<PDF::IsObject T>
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struct Formatter<T> : Formatter<StringView> {
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void format(FormatBuilder& builder, T const& object)
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{
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Formatter<StringView>::format(builder, object.to_string(0));
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}
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};
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template<PDF::IsObject T>
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struct Formatter<NonnullRefPtr<T>> : Formatter<T> {
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void format(FormatBuilder& builder, NonnullRefPtr<T> const& object)
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{
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Formatter<T>::format(builder, *object);
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}
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};
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}
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