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serenity/Userland/Libraries/LibPDF/Forward.h
2021-09-20 17:39:36 +04:30

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C++

/*
* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <AK/StdLibExtras.h>
namespace PDF {
class Document;
class Object;
// Note: This macro doesn't care about PlainTextStreamObject and EncodedStreamObject because
// we never need to work directly with either of them.
#define ENUMERATE_OBJECT_TYPES(V) \
V(StringObject, string) \
V(NameObject, name) \
V(ArrayObject, array) \
V(DictObject, dict) \
V(StreamObject, stream) \
V(IndirectValue, indirect_value)
#define FORWARD_DECL(class_name, _) class class_name;
ENUMERATE_OBJECT_TYPES(FORWARD_DECL)
#undef FORWARD_DECL
template<typename T>
concept IsObject = IsBaseOf<Object, T>;
template<typename T>
concept IsValuePrimitive = IsSame<T, bool> || IsSame<T, int> || IsSame<T, float>;
template<typename T>
concept IsValueType = IsValuePrimitive<T> || IsObject<T>;
template<IsValueType T>
using UnwrappedValueType = Conditional<IsObject<T>, NonnullRefPtr<T>, T>;
}