exceptions.hpp

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#pragma once
 
#include <co_ecs/component.hpp>
#include <co_ecs/entity.hpp>
 
#include <sstream>
#include <stdexcept>
#include <string>
 
namespace co_ecs {
 
class entity_not_found : public std::exception {
public:
    explicit entity_not_found(entity ent) {
        std::stringstream ss;
        ss << "entity (" << ent.id() << ", " << ent.generation() << ")" << " does not exist";
        _msg = ss.str();
    }
 
    [[nodiscard]] auto what() const noexcept -> const char* override {
        return _msg.c_str();
    }
 
private:
    std::string _msg;
};
 
class component_not_found : public std::exception {
public:
    explicit component_not_found(const type_meta* meta) {
        std::stringstream ss;
        ss << "component \"" << meta->name << "\" not found";
        _msg = ss.str();
    }
 
    [[nodiscard]] auto what() const noexcept -> const char* override {
        return _msg.c_str();
    }
 
private:
    std::string _msg;
};
 
class insufficient_chunk_size : public std::exception {
public:
    explicit insufficient_chunk_size(std::size_t requested_size, std::size_t chunk_size) {
        std::stringstream ss;
        ss << "Total size of components " << requested_size << " bytes exceeds chunk block size of " << chunk_size
           << " bytes";
        _msg = ss.str();
    }
 
    [[nodiscard]] auto what() const noexcept -> const char* override {
        return _msg.c_str();
    }
 
private:
    std::string _msg;
};
 
} // namespace co_ecs