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/// \file utils/config/exceptions.hpp
/// Exception types raised by the config module.

#if !defined(UTILS_CONFIG_EXCEPTIONS_HPP)
#define UTILS_CONFIG_EXCEPTIONS_HPP

#include <stdexcept>

#include "utils/config/tree.hpp"

namespace utils {
namespace config {


/// Base exceptions for config errors.
class error : public std::runtime_error {
public:
    explicit error(const std::string&);
    ~error(void) throw();
};


/// Exception denoting that a key was not found within a tree.
class invalid_key_error : public error {
public:
    explicit invalid_key_error(const std::string&);
    ~invalid_key_error(void) throw();
};


/// Exception denoting that a configuration file is invalid.
class syntax_error : public error {
public:
    explicit syntax_error(const std::string&);
    ~syntax_error(void) throw();
};


/// Exception denoting that a key was not found within a tree.
class unknown_key_error : public error {
public:
    explicit unknown_key_error(const detail::tree_key&,
                               const std::string& = "");
    ~unknown_key_error(void) throw();
};


/// Exception denoting that a value was invalid.
class value_error : public error {
public:
    explicit value_error(const std::string&);
    ~value_error(void) throw();
};


}  // namespace config
}  // namespace utils


#endif  // !defined(UTILS_CONFIG_EXCEPTIONS_HPP)