IInputStream.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2024 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include <span>
#include "AEOFException.h"
#include <AUI/Traits/values.h>
#include <glm/glm.hpp>
 
class IOutputStream;

class IInputStream
{
public:
    virtual ~IInputStream() = default;

    virtual size_t read(char* dst, size_t size) = 0;

    size_t read(std::span<std::byte> destination) {
        return read((char*)destination.data(), destination.size());
    }

    void readExact(char* dst, size_t size) {
        char* begin = dst;
        char* end = dst + size;
        while (begin != end) {
            size_t r = read(begin, end - begin);
            if (r == 0) {
                throw AEOFException();
            }
            begin += r;
        }
    }

    template<typename T>
    T deserialize();

    template<typename T>
    IInputStream& operator>>(T& dst);
    template<typename T>
    IInputStream& operator>>(T&& dst);
};
 
#include <AUI/Traits/serializable.h>
 
template<typename T>
inline T IInputStream::deserialize() {
    return aui::deserialize<T>(*this);
}
 
template<typename T>
IInputStream& IInputStream::operator>>(T& dst) {
    aui::deserialize<T>(*this, dst);
    return *this;
}
 
template<typename T>
IInputStream& IInputStream::operator>>(T&& dst) {
    aui::deserialize<T>(*this, dst);
    return *this;
}