exceptions.h

/*
 * LMDB Abstraction Layer.
 * Copyright (C) 2023  Yury Gubich <blue@macaw.me>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include <stdexcept>
#include <string>
#include <string_view>
#include <optional>
 
namespace LMDBAL {

class Exception : public std::exception {
public:
    explicit Exception(std::size_t expectedSize = 0);
    ~Exception() override;
 
    std::string getMessage() const;                         
    const char* what() const noexcept( true ) override;     
 
protected:
    std::string_view appendSegment(std::string_view value); 
    void appendLiteral(std::string_view value);             
 
private:
    std::string message;                                    
};

class Directory : public Exception {
public:
    explicit Directory(std::string_view path);
private:
    std::string_view path;                                  
};

class Closed : public Exception {
public:
    Closed(std::string_view operation, std::string_view dbName, std::optional<std::string_view> tableName = std::nullopt);
private:
    std::string_view operation;                             
    std::string_view dbName;                                
    std::optional<std::string_view> tableName;              
};

class CursorNotReady : public Exception {
public:
    CursorNotReady(std::string_view operation, std::string_view dbName, std::string_view tableName);
private:
    std::string_view operation;                             
    std::string_view dbName;                                
    std::string_view tableName;                             
};

class CursorEmpty : public Exception {
public:
    explicit CursorEmpty(std::string_view operation);
private:
    std::string_view operation;                             
};

class Opened : public Exception {
public:
    Opened(std::string_view dbName, std::string_view action);
private:
    std::string_view dbName;                                
    std::string_view action;                                
};

class NotFound : public Exception {
public:
    NotFound(std::string_view key, std::string_view dbName, std::string_view tableName);
private:
    std::string_view key;                                   
    std::string_view dbName;                                
    std::string_view tableName;                             
};

class StorageDuplicate : public Exception {
public:
    StorageDuplicate(std::string_view dbName, std::string_view tableName);
private:
    std::string_view dbName;                                
    std::string_view tableName;                             
};

class Exist : public Exception {
public:
    Exist(std::string_view key, std::string_view dbName, std::string_view tableName);
private:
    std::string_view key;                                   
    std::string_view dbName;                                
    std::string_view tableName;                             
};

class TransactionTerminated : public Exception {
public:
    TransactionTerminated(std::string_view dbName, std::string_view tableName, std::string_view action = "");
private:
    std::string_view dbName;                                
    std::string_view tableName;                             
    std::string_view action;                                
};

class Unknown : public Exception {
public:
    Unknown(std::string_view dbName, std::string_view message, std::optional<std::string_view> tableName = std::nullopt);
private:
    std::string_view dbName;                                
    std::optional<std::string_view> tableName;              
    std::string_view details;                               
};
 
}